===== CASE: -n -c FOO=1 break =====


  FOO=1 break
  ^~~~
[ -c flag ]:1: Control flow shouldn't have environment bindings

===== CASE: -n -c break 1 2 =====


  break 1 2
          ^
[ -c flag ]:1: Unexpected argument to 'break'

===== CASE: -n -c x"y"() { echo hi; } =====


  x"y"() { echo hi; }
  ^
[ -c flag ]:1: Invalid function name

===== CASE: -n -c function x"y" { echo hi; } =====


  function x"y" { echo hi; }
           ^
[ -c flag ]:1: Invalid KSH-style function name

===== CASE: -n -c } =====


  }
  ^
[ -c flag ]:1: Unexpected right brace

===== CASE: -n -c case foo in *) echo  =====


  case foo in *) echo
                      ^
[ -c flag ]:1: Expected ;; or esac

===== CASE: -n -c case foo in x|) echo  =====


  case foo in x|) echo
                ^
[ -c flag ]:1: Expected case pattern

===== CASE: -n -c ls foo| =====


  ls foo|
         ^
[ -c flag ]:1: Unexpected EOF while parsing command

===== CASE: -n -c ls foo&& =====


  ls foo&&
          ^
[ -c flag ]:1: Unexpected EOF while parsing command

===== CASE: -n -c foo() =====


  foo()
       ^
[ -c flag ]:1: Unexpected word while parsing compound command

===== CASE: -n -c break >out =====


(command.ControlFlow
  keyword: 
    (Token
      id: Id.ControlFlow_Break
      col: 0
      length: 5
      span_id: 0
      line: (SourceLine line_num:1 content:'break >out' src:(source.CFlag))
      tval: break
    )
)

===== CASE: -n -c break >out =====


  break >out
  ^~~~~
[ -c flag ]:1: Control flow shouldn't have redirects

===== CASE: -n -c [ ( x ] =====


  [ ( x ]
        ^
[ -c flag ]:1: Syntax error in expression (near Id.Op_RBracket)

===== CASE: -n -c PYTHONPATH=. FOO=(1 2) python =====


  PYTHONPATH=. FOO=(1 2) python
               ^~~~
[ -c flag ]:1: Environment bindings can't contain array literals

===== CASE: -n -c PYTHONPATH+=1 python =====


  PYTHONPATH+=1 python
  ^~~~~~~~~~~~
[ -c flag ]:1: Expected = in environment binding, got +=

===== CASE: -n -c  
    echo line 2
    echo $( echo  =====


      echo $( echo
                   ^
[ -c flag ]:3: Invalid word while parsing command list

===== CASE: -n -c  
    echo line 2
    echo ` echo  =====


      echo ` echo
           ^
[ -c flag ]:3: Unexpected EOF while looking for closing backtick

===== CASE: -n -c 
    echo line 2
    echo ` echo \`  =====


      echo ` echo \`
           ^
[ -c flag ]:3: Unexpected EOF while looking for closing backtick

===== CASE: -n -c 
    echo line 2
    echo ` echo \`unclosed `  =====


      echo ` echo \`unclosed `
                  ^
[ backticks in [ -c flag ] ]:3: Unexpected EOF while looking for closing backtick

===== CASE: -n -c echo `for x in` =====


  echo `for x in`
                ^
[ backticks in [ -c flag ] ]:1: Invalid word in for loop

===== CASE: -n -c echo < << =====


  echo < <<
         ^~
[ -c flag ]:1: Invalid token after redirect operator

===== CASE: -n -c echo $( echo > >>  ) =====


  echo $( echo > >>  )
                 ^~
[ -c flag ]:1: Invalid token after redirect operator

===== CASE: -n -c cat <<EOF
$(( 1 * ))  
EOF
 =====


  $(( 1 * ))
          ^
[ -c flag ]:2: Token can't be used in prefix position

===== CASE: -n -c cat <<EOF
invalid: ${a!}
EOF
 =====


  invalid: ${a!}
              ^
[ -c flag ]:2: Expected } to close ${

===== CASE: -n -c cat <<EOF
$(for x in )
EOF
 =====


  $(for x in )
             ^
[ -c flag ]:2: Invalid word in for loop

===== CASE: -n -c cat << $(invalid here end) =====


  cat << $(invalid here end)
         ^~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << $((1+2)) =====


  cat << $((1+2))
         ^~~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << a=(1 2 3) =====


  cat << a=(1 2 3)
         ^~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << \a$(invalid) =====


  cat << \a$(invalid)
         ^~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << "double"$(invalid) =====


  cat << "double"$(invalid)
         ^
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << ~foo/$(invalid) =====


  cat << ~foo/$(invalid)
         ^~~~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c cat << $var/$(invalid) =====


  cat << $var/$(invalid)
         ^~~~
[ -c flag ]:1: Unterminated here doc began here

===== CASE: -n -c a[-1]+=(4 5) =====


  a[-1]+=(4 5)
         ^
[ -c flag ]:1: Unexpected left paren (might need a space before it)

===== CASE: -n -c 
  for
  do
  done
   =====


    for
       ^
[ -c flag ]:2: Expected loop variable (a constant word)

===== CASE: -n -c 
  case
  in esac
   =====


    case
        ^
[ -c flag ]:2: Expected a word to match against

===== CASE: -n -c 
  while
  do
  done
   =====


    do
    ^~
[ -c flag ]:3: Expected a condition

===== CASE: -n -c 
  if
  then
  fi
   =====


    then
    ^~~~
[ -c flag ]:3: Expected a condition

===== CASE: -n -c 
  if true
  then
  elif
  then
  fi
   =====


    then
    ^~~~
[ -c flag ]:5: Expected a condition

===== CASE: -n -c 
  case |
  in
  esac
   =====


    case |
         ^
[ -c flag ]:2: Expected a word to match against

===== CASE: -n -c 
  case ;
  in
  esac
   =====


    case ;
         ^
[ -c flag ]:2: Expected a word to match against

===== CASE: -n -c 
  if
  true
  then
  fi
   =====


(command.If
  if_kw: 
    (Token
      id: Id.KW_If
      col: 2
      length: 2
      span_id: 2
      line: (SourceLine line_num:2 content:'  if\n' src:(source.CFlag))
      tval: if
    )
  arms: [
    (IfArm
      keyword: 
        (Token
          id: Id.KW_If
          col: 2
          length: 2
          span_id: 2
          line: (SourceLine line_num:2 content:'  if\n' src:(source.CFlag))
          tval: if
        )
      cond: 
        (condition.Shell
          commands: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 2
                  length: 4
                  span_id: 5
                  line: (SourceLine line_num:3 content:'  true\n' src:(source.CFlag))
                  tval: true
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 2
                      length: 4
                      span_id: 5
                      line: (SourceLine line_num:3 content:'  true\n' src:(source.CFlag))
                      tval: true
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          ]
        )
      then_kw: 
        (Token
          id: Id.KW_Then
          col: 2
          length: 4
          span_id: 8
          line: (SourceLine line_num:4 content:'  then\n' src:(source.CFlag))
          tval: then
        )
      action: []
      spids: [2 8]
    )
  ]
  else_action: []
  fi_kw: 
    (Token
      id: Id.KW_Fi
      col: 2
      length: 2
      span_id: 11
      line: (SourceLine line_num:5 content:'  fi\n' src:(source.CFlag))
      tval: fi
    )
  redirects: []
)

===== CASE: -n -c 
  while
  false
  do
  done
   =====


(command.WhileUntil
  keyword: 
    (Token
      id: Id.KW_While
      col: 2
      length: 5
      span_id: 2
      line: (SourceLine line_num:2 content:'  while\n' src:(source.CFlag))
      tval: while
    )
  cond: 
    (condition.Shell
      commands: [
        (command.Simple
          blame_tok: 
            (Token
              id: Id.Lit_Chars
              col: 2
              length: 5
              span_id: 5
              line: (SourceLine line_num:3 content:'  false\n' src:(source.CFlag))
              tval: false
            )
          more_env: []
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 2
                  length: 5
                  span_id: 5
                  line: (SourceLine line_num:3 content:'  false\n' src:(source.CFlag))
                  tval: false
                )
              ]
            )
          ]
          redirects: []
          do_fork: T
        )
      ]
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 2
          length: 2
          span_id: 8
          line: (SourceLine line_num:4 content:'  do\n' src:(source.CFlag))
          tval: do
        )
      children: []
      right: 
        (Token
          id: Id.KW_Done
          col: 2
          length: 4
          span_id: 11
          line: (SourceLine line_num:5 content:'  done\n' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c 
  while
  true;
  false
  do
  done
   =====


(command.WhileUntil
  keyword: 
    (Token
      id: Id.KW_While
      col: 2
      length: 5
      span_id: 2
      line: (SourceLine line_num:2 content:'  while\n' src:(source.CFlag))
      tval: while
    )
  cond: 
    (condition.Shell
      commands: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 2
                  length: 4
                  span_id: 5
                  line: (SourceLine line_num:3 content:'  true;\n' src:(source.CFlag))
                  tval: true
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 2
                      length: 4
                      span_id: 5
                      line: (SourceLine line_num:3 content:'  true;\n' src:(source.CFlag))
                      tval: true
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 6
              length: 1
              span_id: 6
              line: (SourceLine line_num:3 content:'  true;\n' src:(source.CFlag))
              tval: _
            )
        )
        (command.Simple
          blame_tok: 
            (Token
              id: Id.Lit_Chars
              col: 2
              length: 5
              span_id: 9
              line: (SourceLine line_num:4 content:'  false\n' src:(source.CFlag))
              tval: false
            )
          more_env: []
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 2
                  length: 5
                  span_id: 9
                  line: (SourceLine line_num:4 content:'  false\n' src:(source.CFlag))
                  tval: false
                )
              ]
            )
          ]
          redirects: []
          do_fork: T
        )
      ]
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 2
          length: 2
          span_id: 12
          line: (SourceLine line_num:5 content:'  do\n' src:(source.CFlag))
          tval: do
        )
      children: []
      right: 
        (Token
          id: Id.KW_Done
          col: 2
          length: 4
          span_id: 15
          line: (SourceLine line_num:6 content:'  done\n' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c 
  if true
  then
  fi
   =====


(command.If
  if_kw: 
    (Token
      id: Id.KW_If
      col: 2
      length: 2
      span_id: 2
      line: (SourceLine line_num:2 content:'  if true\n' src:(source.CFlag))
      tval: if
    )
  arms: [
    (IfArm
      keyword: 
        (Token
          id: Id.KW_If
          col: 2
          length: 2
          span_id: 2
          line: (SourceLine line_num:2 content:'  if true\n' src:(source.CFlag))
          tval: if
        )
      cond: 
        (condition.Shell
          commands: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 5
                  length: 4
                  span_id: 4
                  line: (SourceLine line_num:2 content:'  if true\n' src:(source.CFlag))
                  tval: true
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 5
                      length: 4
                      span_id: 4
                      line: (SourceLine line_num:2 content:'  if true\n' src:(source.CFlag))
                      tval: true
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          ]
        )
      then_kw: 
        (Token
          id: Id.KW_Then
          col: 2
          length: 4
          span_id: 7
          line: (SourceLine line_num:3 content:'  then\n' src:(source.CFlag))
          tval: then
        )
      action: []
      spids: [2 7]
    )
  ]
  else_action: []
  fi_kw: 
    (Token
      id: Id.KW_Fi
      col: 2
      length: 2
      span_id: 10
      line: (SourceLine line_num:4 content:'  fi\n' src:(source.CFlag))
      tval: fi
    )
  redirects: []
)

===== CASE: -n -c 
  while true;
        false
  do
  done
   =====


(command.WhileUntil
  keyword: 
    (Token
      id: Id.KW_While
      col: 2
      length: 5
      span_id: 2
      line: (SourceLine line_num:2 content:'  while true;\n' src:(source.CFlag))
      tval: while
    )
  cond: 
    (condition.Shell
      commands: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 8
                  length: 4
                  span_id: 4
                  line: (SourceLine line_num:2 content:'  while true;\n' src:(source.CFlag))
                  tval: true
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 8
                      length: 4
                      span_id: 4
                      line: (SourceLine line_num:2 content:'  while true;\n' src:(source.CFlag))
                      tval: true
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 12
              length: 1
              span_id: 5
              line: (SourceLine line_num:2 content:'  while true;\n' src:(source.CFlag))
              tval: _
            )
        )
        (command.Simple
          blame_tok: 
            (Token
              id: Id.Lit_Chars
              col: 8
              length: 5
              span_id: 8
              line: (SourceLine line_num:3 content:'        false\n' src:(source.CFlag))
              tval: false
            )
          more_env: []
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 8
                  length: 5
                  span_id: 8
                  line: (SourceLine line_num:3 content:'        false\n' src:(source.CFlag))
                  tval: false
                )
              ]
            )
          ]
          redirects: []
          do_fork: T
        )
      ]
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 2
          length: 2
          span_id: 11
          line: (SourceLine line_num:4 content:'  do\n' src:(source.CFlag))
          tval: do
        )
      children: []
      right: 
        (Token
          id: Id.KW_Done
          col: 2
          length: 4
          span_id: 14
          line: (SourceLine line_num:5 content:'  done\n' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c echo ${ =====


  echo ${
         ^
[ -c flag ]:1: Unexpected token in ${}

===== CASE: -n -c ${foo:} =====


  ${foo:}
        ^
[ -c flag ]:1: Token can't be used in prefix position

===== CASE: -n -c echo ${a[@Z =====


  echo ${a[@Z
            ^
[ -c flag ]:1: Expected ] to close subscript

===== CASE: -n -c echo ${x.} =====


  echo ${x.}
          ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c echo ${!x.} =====


  echo ${!x.}
           ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c echo ${a:1;} =====


  echo ${a:1;}
            ^
[ -c flag ]:1: Expected : or } in slice

===== CASE: -n -c echo ${a:1:2;} =====


  echo ${a:1:2;}
              ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Arith_Semi != Id.Arith_RBrace)

===== CASE: -n -c echo ${#a. =====


  echo ${#a.
           ^
[ -c flag ]:1: Expected } after length expression

===== CASE: -n -c for (( i = 0; i < 10; i++ ; =====


  for (( i = 0; i < 10; i++ ;
                            ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Arith_Semi != Id.Arith_RParen)

===== CASE: -n -c for (( i = 0; i < 10; i++ / =====


  for (( i = 0; i < 10; i++ /
                             ^
[ -c flag ]:1: Unexpected end of input

===== CASE: -n -c echo @(extglob|foo =====


  echo @(extglob|foo
       ^~
[ -c flag ]:1: Unexpected EOF reading extended glob that began here

===== CASE: -n -c ${undef:- =====


  ${undef:-
           ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c ${undef:-$ =====


  ${undef:-$
            ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c ${undef:-$F =====


  ${undef:-$F
             ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c ${x@ =====


  ${x@
     ^
[ -c flag ]:1: Unexpected token in ${} (VOp3)

===== CASE: -n -c ${x@Q =====


  ${x@Q
       ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c ${x% =====


  ${x%
      ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c ${x/ =====


  ${x/
      ^
[ -c flag ]:1: Expected } after replacement string, got Id.Eof_Real

===== CASE: -n -c ${x/a/ =====


  ${x/a/
        ^
[ -c flag ]:1: Expected } after replacement string, got Id.Eof_Real

===== CASE: -n -c ${x/a/b =====


  ${x/a/b
         ^
[ -c flag ]:1: Expected } after replacement string, got Id.Eof_Real

===== CASE: -n -c ${x: =====


  ${x:
      ^
[ -c flag ]:1: Unexpected end of input

===== CASE: -n -c a=(1 & 2) =====


  a=(1 & 2)
       ^
[ -c flag ]:1: Unexpected token in array literal

===== CASE: -n -c a= (1 2) =====


  a= (1 2)
    ^
[ -c flag ]:1: Expected ( after =

===== CASE: -n -c a=(1 2 =====


  a=(1 2
        ^
[ -c flag ]:1: Unexpected token in array literal

===== CASE: -n -c a=(1 ${2@} ) =====


  a=(1 ${2@} )
          ^
[ -c flag ]:1: Unexpected token in ${} (VOp3)

===== CASE: -n -c echo ${x/} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: (CompoundWord parts:[])
              replace: (rhs_word.Empty)
              replace_mode: Id.Undefined_Tok
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 9
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo ${x/}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x//} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: (CompoundWord parts:[])
              replace: (rhs_word.Empty)
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 10
              length: 1
              span_id: 6
              line: (SourceLine line_num:1 content:'echo ${x//}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x/foo} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 9
                      length: 3
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: (rhs_word.Empty)
              replace_mode: Id.Undefined_Tok
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 12
              length: 1
              span_id: 6
              line: (SourceLine line_num:1 content:'echo ${x/foo}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x//foo} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 10
                      length: 3
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: (rhs_word.Empty)
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 13
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'echo ${x//foo}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x/%foo} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 10
                      length: 3
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: (rhs_word.Empty)
              replace_mode: Id.Lit_Percent
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 13
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'echo ${x/%foo}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x///foo} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Slash
                      col: 10
                      length: 1
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
                      tval: '/'
                    )
                    (Token
                      id: Id.Lit_Chars
                      col: 11
                      length: 3
                      span_id: 7
                      line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: (rhs_word.Empty)
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 14
              length: 1
              span_id: 8
              line: (SourceLine line_num:1 content:'echo ${x///foo}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x///} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Slash
                      col: 10
                      length: 1
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
                      tval: '/'
                    )
                  ]
                )
              replace: (rhs_word.Empty)
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 11
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'echo ${x///}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x/%/} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: (CompoundWord parts:[])
              replace: (CompoundWord parts:[])
              replace_mode: Id.Lit_Percent
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 11
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'echo ${x/%/}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x////} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Slash
                      col: 10
                      length: 1
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
                      tval: '/'
                    )
                  ]
                )
              replace: (CompoundWord parts:[])
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 12
              length: 1
              span_id: 8
              line: (SourceLine line_num:1 content:'echo ${x////}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x/%//} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: (CompoundWord parts:[])
              replace: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Slash
                      col: 11
                      length: 1
                      span_id: 7
                      line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
                      tval: '/'
                    )
                  ]
                )
              replace_mode: Id.Lit_Percent
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 12
              length: 1
              span_id: 8
              line: (SourceLine line_num:1 content:'echo ${x/%//}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x//foo/replace
} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 10
                      length: 3
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 14
                      length: 8
                      span_id: 8
                      line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
                      tval: 'replace\n'
                    )
                  ]
                )
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x//foo/replace\n' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 0
              length: 1
              span_id: 9
              line: (SourceLine line_num:2 content:'}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ${x//foo/replace$foo} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.PatSub
              pat: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 10
                      length: 3
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
                      tval: foo
                    )
                  ]
                )
              replace: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 14
                      length: 7
                      span_id: 8
                      line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
                      tval: replace
                    )
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 21
                          length: 4
                          span_id: 9
                          line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
                          tval: '$foo'
                        )
                      var_name: foo
                    )
                  ]
                )
              replace_mode: Id.Lit_Slash
              slash_tok: 
                (Token
                  id: Id.VOp2_Slash
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
                  tval: _
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 25
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'echo ${x//foo/replace$foo}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c "unterminated double =====


  "unterminated double
  ^
[ -c flag ]:1: Unexpected EOF reading double-quoted string that began here

===== CASE: -n -c 'unterminated single =====


  'unterminated single
  ^
[ -c flag ]:1: Unexpected EOF in single-quoted string that began here

===== CASE: -n -c 
  "unterminated double multiline
  line 1
  line 2 =====


    "unterminated double multiline
    ^
[ -c flag ]:2: Unexpected EOF reading double-quoted string that began here

===== CASE: -n -c 
  'unterminated single multiline
  line 1
  line 2 =====


    'unterminated single multiline
    ^
[ -c flag ]:2: Unexpected EOF in single-quoted string that began here

===== CASE: -n -c echo ${x*} =====


  echo ${x*}
          ^
[ -c flag ]:1: Unexpected token in ${} (VOp3)

===== CASE: -n -c echo ${x@} =====


  echo ${x@}
          ^
[ -c flag ]:1: Unexpected token in ${} (VOp3)

===== CASE: -n -c echo ${x.} =====


  echo ${x.}
          ^
[ -c flag ]:1: Expected } to close ${

===== CASE: -n -c echo $(( 1 + 2 ; =====


  echo $(( 1 + 2 ;
                 ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Arith_Semi != Id.Arith_RParen)

===== CASE: -n -c echo $(( 1 + 2 ); =====


  echo $(( 1 + 2 );
                  ^
[ -c flag ]:1: Expected second ) to end arith sub

===== CASE: -n -c echo $((  =====


  echo $((
           ^
[ -c flag ]:1: Unexpected end of input

===== CASE: -n -c echo $(( 1 =====


  echo $(( 1
            ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Eof_Real != Id.Arith_RParen)

===== CASE: -n -c (( 1 + 2 / =====


  (( 1 + 2 /
            ^
[ -c flag ]:1: Unexpected end of input

===== CASE: -n -c (( 1 + 2 )/ =====


  (( 1 + 2 )/
            ^
[ -c flag ]:1: Expected second ) to end arith statement

===== CASE: -n -c (( 1 =====


  (( 1
      ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Eof_Real != Id.Arith_RParen)

===== CASE: -n -c (( =====


  ((
    ^
[ -c flag ]:1: Unexpected end of input

===== CASE: -n -c a[x+]=1 =====


  a[x+]=1
      ^
[ array place in [ -c flag ] ]:1: Unexpected end of input

===== CASE: -n -c a[]=1 =====


  a[]=1
    ^
[ array place in [ -c flag ] ]:1: Unexpected end of input

===== CASE: -n -c a[*]=1 =====


  a[*]=1
    ^
[ array place in [ -c flag ] ]:1: Token can't be used in prefix position

===== CASE: -n -c (( a + { )) =====


  (( a + { ))
         ^
[ -c flag ]:1: Unexpected token while parsing arithmetic: '{'

===== CASE: -n -c (( a + } )) =====


  (( a + } ))
         ^
[ -c flag ]:1: Token can't be used in prefix position

===== CASE: -n -c echo $((a b)) =====


  echo $((a b))
            ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RParen)

===== CASE: -n -c ((a b)) =====


  ((a b))
      ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RParen)

===== CASE: -n -c for ((x=0; x<5; x++)); do echo $x; done =====


(command.ForExpr
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
      tval: for
    )
  init: 
    (arith_expr.BinaryAssign
      op_id: Id.Arith_Equal
      left: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
      right: 
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Digits
              col: 8
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: 0
            )
          ]
        )
    )
  cond: 
    (arith_expr.Binary
      op_id: Id.Arith_Less
      left: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 11
              length: 1
              span_id: 8
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
      right: 
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Digits
              col: 13
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: 5
            )
          ]
        )
    )
  update: 
    (arith_expr.UnaryAssign
      op_id: Id.Node_PostDPlus
      child: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 16
              length: 1
              span_id: 13
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 23
          length: 2
          span_id: 19
          line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 26
                  length: 4
                  span_id: 21
                  line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 26
                      length: 4
                      span_id: 21
                      line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 31
                          length: 2
                          span_id: 23
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'for ((x=0; x<5; x++)); do echo $x; done'
                              src: (source.CFlag)
                            )
                          tval: '$x'
                        )
                      var_name: x
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 33
              length: 1
              span_id: 24
              line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 35
          length: 4
          span_id: 26
          line: (SourceLine line_num:1 content:'for ((x=0; x<5; x++)); do echo $x; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c for ((; x<5; x++)); do echo $x; done =====


(command.ForExpr
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
      tval: for
    )
  cond: 
    (arith_expr.Binary
      op_id: Id.Arith_Less
      left: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 8
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
      right: 
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Digits
              col: 10
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: 5
            )
          ]
        )
    )
  update: 
    (arith_expr.UnaryAssign
      op_id: Id.Node_PostDPlus
      child: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 13
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 20
          length: 2
          span_id: 16
          line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 23
                  length: 4
                  span_id: 18
                  line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 23
                      length: 4
                      span_id: 18
                      line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 28
                          length: 2
                          span_id: 20
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'for ((; x<5; x++)); do echo $x; done'
                              src: (source.CFlag)
                            )
                          tval: '$x'
                        )
                      var_name: x
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 30
              length: 1
              span_id: 21
              line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 32
          length: 4
          span_id: 23
          line: (SourceLine line_num:1 content:'for ((; x<5; x++)); do echo $x; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c for ((; ; x++)); do echo $x; done =====


(command.ForExpr
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
      tval: for
    )
  update: 
    (arith_expr.UnaryAssign
      op_id: Id.Node_PostDPlus
      child: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 10
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 17
          length: 2
          span_id: 13
          line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 20
                  length: 4
                  span_id: 15
                  line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 20
                      length: 4
                      span_id: 15
                      line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 25
                          length: 2
                          span_id: 17
                          line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
                          tval: '$x'
                        )
                      var_name: x
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 27
              length: 1
              span_id: 18
              line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 29
          length: 4
          span_id: 20
          line: (SourceLine line_num:1 content:'for ((; ; x++)); do echo $x; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c for ((; ;)); do echo $x; done =====


(command.ForExpr
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
      tval: for
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 13
          length: 2
          span_id: 10
          line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 16
                  length: 4
                  span_id: 12
                  line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 16
                      length: 4
                      span_id: 12
                      line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 21
                          length: 2
                          span_id: 14
                          line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
                          tval: '$x'
                        )
                      var_name: x
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 23
              length: 1
              span_id: 15
              line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 25
          length: 4
          span_id: 17
          line: (SourceLine line_num:1 content:'for ((; ;)); do echo $x; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c for ((x=0; x<5; x++ b)); do echo $x; done =====


  for ((x=0; x<5; x++ b)); do echo $x; done
                      ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RParen)

===== CASE: -n -c for ((x=0 b; x<5; x++)); do echo $x; done =====


  for ((x=0 b; x<5; x++)); do echo $x; done
            ^
[ -c flag ]:1: Expected ; here

===== CASE: -n -c for ((x=0; x<5 b; x++)); do echo $x; done =====


  for ((x=0; x<5 b; x++)); do echo $x; done
                 ^
[ -c flag ]:1: Expected ; here

===== CASE: -n -c ${a:1+2 b} =====


  ${a:1+2 b}
           ^
[ -c flag ]:1: Expected : or } in slice

===== CASE: -n -c ${a:1+2:3+4 b} =====


  ${a:1+2:3+4 b}
              ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RBrace)

===== CASE: -n -c ${a[1+2 b]} =====


  ${a[1+2 b]}
          ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RBracket)

===== CASE: -n -c $(( 1 + + )) =====


  $(( 1 + + ))
            ^
[ -c flag ]:1: Token can't be used in prefix position

===== CASE: -n -c $(( 1 2 )) =====


  $(( 1 2 ))
        ^
[ -c flag ]:1: Unexpected token after arithmetic expression (Id.Word_Compound != Id.Arith_RParen)

===== CASE: -n -c $(( - ; )) =====


  $(( - ; ))
        ^
[ -c flag ]:1: Token can't be used in prefix position

===== CASE: -n -c $(( ` )) =====


  $(( ` ))
      ^
[ -c flag ]:1: Unexpected EOF while looking for closing backtick

===== CASE: -n -c $(( $ )) =====


  $(( $ ))
      ^
[ -c flag ]:1: Unexpected token while parsing arithmetic: '$'

===== CASE: -n -c $(( x+1 = 42 )) =====


  $(( x+1 = 42 ))
          ^
[ -c flag ]:1: Left-hand side of this assignment is invalid

===== CASE: -n -c $(( (x+42)++ )) =====


  $(( (x+42)++ ))
            ^~
[ -c flag ]:1: Left-hand side of this assignment is invalid

===== CASE: -n -c $(( ++(x+42) )) =====


  $(( ++(x+42) ))
      ^~
[ -c flag ]:1: Left-hand side of this assignment is invalid

===== CASE: -n -c [[ a b ]] =====


  [[ a b ]]
       ^
[ -c flag ]:1: Expected ]]

===== CASE: -n -c [[ a "a"$(echo hi)"b" ]] =====


  [[ a "a"$(echo hi)"b" ]]
       ^
[ -c flag ]:1: Expected ]]

===== CASE: -n -c [[ a == ]] =====


  [[ a == ]]
            ^
[ -c flag ]:1: Expected ]]

===== CASE: -n -c [[ ( 1 == 2 - ]] =====


  [[ ( 1 == 2 - ]]
              ^
[ -c flag ]:1: Expected ), got word.Compound

===== CASE: -n -c [[ == ]] =====


  [[ == ]]
     ^~
[ -c flag ]:1: Unexpected token in boolean expression (Id.BoolBinary_GlobDEqual)

===== CASE: -n -c [[ ) ]] =====


  [[ ) ]]
     ^
[ -c flag ]:1: Unexpected token in boolean expression (Id.Op_RParen)

===== CASE: -n -c [[ ( ]] =====


  [[ ( ]]
       ^~
[ -c flag ]:1: Unexpected token in boolean expression (Id.Lit_DRightBracket)

===== CASE: -n -c [[ ;;; ]] =====


  [[ ;;; ]]
     ^~
[ -c flag ]:1: Unexpected token in boolean expression (Id.Op_DSemi)

===== CASE: -n -c [[ =====


  [[
    ^
[ -c flag ]:1: Unexpected token in boolean expression (Id.Eof_Real)

===== CASE: -n -c [[ ( a == b foo${var} ]] =====


  [[ ( a == b foo${var} ]]
              ^~~
[ -c flag ]:1: Expected ), got word.Compound

===== CASE: [ x -a y f ] =====


  [ x -a y f ]
           ^
[ -c flag ]:1: (test) Unexpected trailing word 'f'

===== CASE: test x -a y f =====


  test x -a y f
              ^
[ -c flag ]:1: (test) Unexpected trailing word 'f'

===== CASE: [ x  =====


  [ x
  ^
[ -c flag ]:1: missing closing ]

===== CASE: [ x x ] =====


  [ x x ]
    ^
[ -c flag ]:1: (test) Expected unary operator, got 'x' (2 args)

===== CASE: [ x x "a b" ] =====


  [ x x "a b" ]
      ^
[ -c flag ]:1: (test) Expected binary operator, got 'x' (3 args)

===== CASE: [ -t xxx ] =====


  [ -t xxx ]
       ^~~
[ -c flag ]:1: (test) Invalid file descriptor 'xxx'

===== CASE: [ \( x -a -y -a z ] =====


[??? no location ???] (test) Expected ), got EOF

===== CASE: printf % =====


  %
   ^
[ printf word at line 1 of [ -c flag ] ]:1: Expected a printf format character

===== CASE: printf [%Z] =====


  [%Z]
    ^
[ printf word at line 1 of [ -c flag ] ]:1: Invalid printf format character

===== CASE: printf -v "-invalid-" %s foo =====


  -invalid-
           ^
[ dynamic place word at ? ]:1: Unexpected end of input
  printf -v "-invalid-" %s foo
  ^~~~~~
[ -c flag ]:1: 'printf' got invalid place expression

===== CASE: shift 1 2 =====


  shift 1 2
  ^~~~~
[ -c flag ]:1: 'shift' got too many arguments

===== CASE: shift zzz =====


  shift zzz
  ^~~~~
[ -c flag ]:1: 'shift' Invalid shift argument 'zzz'

===== CASE: pushd x y =====


  pushd x y
          ^
[ -c flag ]:1: 'pushd' got too many arguments

===== CASE: pwd -x =====


  pwd -x
      ^~
[ -c flag ]:1: 'pwd' doesn't accept flag -x

===== CASE: pp x foo a-x =====


  pp x foo a-x
     ^
[ -c flag ]:1: 'pp' got invalid action 'x'

===== CASE: wait zzz =====


  wait zzz
       ^~~
[ -c flag ]:1: 'wait' expected PID or jobspec, got 'zzz'

===== CASE: wait %jobspec-not-supported =====


  wait %jobspec-not-supported
       ^
[ -c flag ]:1: 'wait' expected PID or jobspec, got '%jobspec-not-supported'

===== CASE: unset invalid-var-name =====


  unset invalid-var-name
  ^~~~~
[ -c flag ]:1: fatal: Invalid place to modify

===== CASE: getopts hc: invalid-var-name =====


  getopts hc: invalid-var-name
          ^~
[ -c flag ]:1: 'getopts' got invalid variable name 'invalid-var-name'

===== CASE: read -x =====


  read -x
       ^~
[ -c flag ]:1: 'read' doesn't accept flag -x

===== CASE: builtin read -x =====


  builtin read -x
               ^~
[ -c flag ]:1: 'read' doesn't accept flag -x

===== CASE: read -n =====


  read -n
       ^~
[ -c flag ]:1: 'read' expected argument to '-n'

===== CASE: read -n x =====


  read -n x
          ^
[ -c flag ]:1: 'read' expected integer after -n, got 'x'

===== CASE: set -o errexit +o oops =====


  set -o errexit +o oops
  ^~~
[ -c flag ]:1: 'set' got invalid option 'oops'
osh usage error: got invalid argument 'x' to '-ast-format', expected one of: text|abbrev-text|html|abbrev-html|oheap|none
oils: got invalid option 'oops'

===== CASE: -n -c echo {1..3..-1} =====


  echo {1..3..-1}
        ^~~~~~~~
[ -c flag ]:1: Invalid step -1 for ascending integer range

===== CASE: -n -c echo {1..3..0} =====


  echo {1..3..0}
        ^~~~~~~
[ -c flag ]:1: Step can't be 0

===== CASE: -n -c echo {3..1..1} =====


  echo {3..1..1}
        ^~~~~~~
[ -c flag ]:1: Invalid step 1 for descending integer range

===== CASE: -n -c echo {3..1..0} =====


  echo {3..1..0}
        ^~~~~~~
[ -c flag ]:1: Step can't be 0

===== CASE: -n -c echo {a..Z} =====


  echo {a..Z}
        ^~~~
[ -c flag ]:1: Mismatched cases in character range

===== CASE: -n -c echo {a..z..0} =====


  echo {a..z..0}
        ^~~~~~~
[ -c flag ]:1: Step can't be 0

===== CASE: -n -c echo {a..z..-1} =====


  echo {a..z..-1}
        ^~~~~~~~
[ -c flag ]:1: Invalid step -1 for ascending character range

===== CASE: -n -c echo {z..a..1} =====


  echo {z..a..1}
        ^~~~~~~
[ -c flag ]:1: Invalid step 1 for descending character range

===== CASE: append =====


  append
  ^~~~~~
[ -c flag ]:1: 'append' requires a variable name

===== CASE: append invalid- =====


  append invalid-
         ^~~~~~~~
[ -c flag ]:1: 'append' got invalid variable name 'invalid-'
test/parse-errors.sh: line 1490: blocks: command not found
test/parse-errors.sh: line 1491: parse_brace: command not found
test/parse-errors.sh: line 1492: regex_literals: command not found
test/parse-errors.sh: line 1493: proc_sig: command not found

===== CASE: -n -c json write (x) =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
      tval: json
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
          tval: json
        )
      ]
    )
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 5
          length: 5
          span_id: 2
          line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
          tval: write
        )
      ]
    )
  ]
  redirects: []
  typed_args: 
    (ArgList
      left: 
        (Token
          id: Id.Op_LParen
          col: 11
          length: 1
          span_id: 4
          line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
          tval: _
        )
      pos_args: [
        (expr.Var
          name: 
            (Token
              id: Id.Expr_Name
              col: 12
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
              tval: x
            )
        )
      ]
      named_args: []
      right: 
        (Token
          id: Id.Op_RParen
          col: 13
          length: 1
          span_id: 6
          line: (SourceLine line_num:1 content:'json write (x)' src:(source.CFlag))
          tval: _
        )
    )
  do_fork: T
)

===== CASE: -n -c echo $(json write (x)) =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (CommandSub
          left_token: 
            (Token
              id: Id.Left_DollarParen
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
              tval: '$('
            )
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 7
                  length: 4
                  span_id: 3
                  line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                  tval: json
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 7
                      length: 4
                      span_id: 3
                      line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                      tval: json
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 12
                      length: 5
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                      tval: write
                    )
                  ]
                )
              ]
              redirects: []
              typed_args: 
                (ArgList
                  left: 
                    (Token
                      id: Id.Op_LParen
                      col: 18
                      length: 1
                      span_id: 7
                      line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                      tval: _
                    )
                  pos_args: [
                    (expr.Var
                      name: 
                        (Token
                          id: Id.Expr_Name
                          col: 19
                          length: 1
                          span_id: 8
                          line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                          tval: x
                        )
                    )
                  ]
                  named_args: []
                  right: 
                    (Token
                      id: Id.Op_RParen
                      col: 20
                      length: 1
                      span_id: 9
                      line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
                      tval: _
                    )
                )
              do_fork: T
            )
          right: 
            (Token
              id: Id.Eof_RParen
              col: 21
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'echo $(json write (x))' src:(source.CFlag))
              tval: _
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c var result = $(json write (x)) =====


(command.VarDecl
  keyword: 
    (Token
      id: Id.KW_Var
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
      tval: var
    )
  lhs: [
    (NameType
      name: 
        (Token
          id: Id.Expr_Name
          col: 4
          length: 6
          span_id: 2
          line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
          tval: result
        )
    )
  ]
  rhs: 
    (CommandSub
      left_token: 
        (Token
          id: Id.Left_DollarParen
          col: 13
          length: 2
          span_id: 6
          line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
          tval: '$('
        )
      child: 
        (command.Simple
          blame_tok: 
            (Token
              id: Id.Lit_Chars
              col: 15
              length: 4
              span_id: 7
              line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
              tval: json
            )
          more_env: []
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 15
                  length: 4
                  span_id: 7
                  line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
                  tval: json
                )
              ]
            )
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 20
                  length: 5
                  span_id: 9
                  line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
                  tval: write
                )
              ]
            )
          ]
          redirects: []
          typed_args: 
            (ArgList
              left: 
                (Token
                  id: Id.Op_LParen
                  col: 26
                  length: 1
                  span_id: 11
                  line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
                  tval: _
                )
              pos_args: [
                (expr.Var
                  name: 
                    (Token
                      id: Id.Expr_Name
                      col: 27
                      length: 1
                      span_id: 12
                      line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
                      tval: x
                    )
                )
              ]
              named_args: []
              right: 
                (Token
                  id: Id.Op_RParen
                  col: 28
                  length: 1
                  span_id: 13
                  line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
                  tval: _
                )
            )
          do_fork: T
        )
      right: 
        (Token
          id: Id.Eof_RParen
          col: 29
          length: 1
          span_id: 14
          line: (SourceLine line_num:1 content:'var result = $(json write (x))' src:(source.CFlag))
          tval: _
        )
    )
)

===== CASE: -n -c json write (x, y); echo hi =====


(command.CommandList
  children: [
    (command.Sentence
      child: 
        (command.Simple
          blame_tok: 
            (Token
              id: Id.Lit_Chars
              col: 0
              length: 4
              span_id: 0
              line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
              tval: json
            )
          more_env: []
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 0
                  length: 4
                  span_id: 0
                  line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                  tval: json
                )
              ]
            )
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  col: 5
                  length: 5
                  span_id: 2
                  line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                  tval: write
                )
              ]
            )
          ]
          redirects: []
          typed_args: 
            (ArgList
              left: 
                (Token
                  id: Id.Op_LParen
                  col: 11
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                  tval: _
                )
              pos_args: [
                (expr.Var
                  name: 
                    (Token
                      id: Id.Expr_Name
                      col: 12
                      length: 1
                      span_id: 5
                      line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                      tval: x
                    )
                )
                (expr.Var
                  name: 
                    (Token
                      id: Id.Expr_Name
                      col: 15
                      length: 1
                      span_id: 8
                      line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                      tval: y
                    )
                )
              ]
              named_args: []
              right: 
                (Token
                  id: Id.Op_RParen
                  col: 16
                  length: 1
                  span_id: 9
                  line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
                  tval: _
                )
            )
          do_fork: T
        )
      terminator: 
        (Token
          id: Id.Op_Semi
          col: 17
          length: 1
          span_id: 10
          line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
          tval: _
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          col: 19
          length: 4
          span_id: 12
          line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
          tval: echo
        )
      more_env: []
      words: [
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 19
              length: 4
              span_id: 12
              line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
              tval: echo
            )
          ]
        )
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 24
              length: 2
              span_id: 14
              line: (SourceLine line_num:1 content:'json write (x, y); echo hi' src:(source.CFlag))
              tval: hi
            )
          ]
        )
      ]
      redirects: []
      do_fork: T
    )
  ]
)

===== CASE: -n -c 
json write (x, name = "value")
echo hi
 =====


(command.CommandList
  children: [
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 1
          line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
          tval: json
        )
      more_env: []
      words: [
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 0
              length: 4
              span_id: 1
              line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
              tval: json
            )
          ]
        )
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 5
              length: 5
              span_id: 3
              line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
              tval: write
            )
          ]
        )
      ]
      redirects: []
      typed_args: 
        (ArgList
          left: 
            (Token
              id: Id.Op_LParen
              col: 11
              length: 1
              span_id: 5
              line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
              tval: _
            )
          pos_args: [
            (expr.Var
              name: 
                (Token
                  id: Id.Expr_Name
                  col: 12
                  length: 1
                  span_id: 6
                  line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
                  tval: x
                )
            )
          ]
          named_args: [
            (NamedArg
              name: 
                (Token
                  id: Id.Expr_Name
                  col: 15
                  length: 4
                  span_id: 9
                  line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
                  tval: name
                )
              value: 
                (DoubleQuoted
                  left: 
                    (Token
                      id: Id.Left_DoubleQuote
                      col: 22
                      length: 1
                      span_id: 13
                      line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
                      tval: '"'
                    )
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 23
                      length: 5
                      span_id: 14
                      line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
                      tval: value
                    )
                  ]
                  right: 
                    (Token
                      id: Id.Right_DoubleQuote
                      col: 28
                      length: 1
                      span_id: 15
                      line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
                      tval: '"'
                    )
                )
            )
          ]
          right: 
            (Token
              id: Id.Op_RParen
              col: 29
              length: 1
              span_id: 16
              line: (SourceLine line_num:2 content:'json write (x, name = "value")\n' src:(source.CFlag))
              tval: _
            )
        )
      do_fork: T
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 18
          line: (SourceLine line_num:3 content:'echo hi\n' src:(source.CFlag))
          tval: echo
        )
      more_env: []
      words: [
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 0
              length: 4
              span_id: 18
              line: (SourceLine line_num:3 content:'echo hi\n' src:(source.CFlag))
              tval: echo
            )
          ]
        )
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 5
              length: 2
              span_id: 20
              line: (SourceLine line_num:3 content:'echo hi\n' src:(source.CFlag))
              tval: hi
            )
          ]
        )
      ]
      redirects: []
      do_fork: T
    )
  ]
)

===== CASE: -n -c json write (x) { echo hi } =====


(command.Simple
  blame_tok: <json>
  more_env: []
  words: [{<json>} {<write>}]
  redirects: []
  typed_args: 
    (ArgList
      left: <Id.Op_LParen _>
      pos_args: [(expr.Var name:<Id.Expr_Name x>)]
      named_args: []
      right: <Id.Op_RParen _>
    )
  block: 
    (BlockArg
      brace_group: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<hi>}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
      lines: [(SourceLine line_num:1 content:'json write (x) { echo hi }' src:(source__CFlag))]
    )
  do_fork: T
)

===== CASE: -n -c 
json write (x) {
  echo hi
} =====


(command.Simple
  blame_tok: <json>
  more_env: []
  words: [{<json>} {<write>}]
  redirects: []
  typed_args: 
    (ArgList
      left: <Id.Op_LParen _>
      pos_args: [(expr.Var name:<Id.Expr_Name x>)]
      named_args: []
      right: <Id.Op_RParen _>
    )
  block: 
    (BlockArg
      brace_group: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<hi>}]
              redirects: []
              do_fork: T
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
      lines: [
        (SourceLine line_num:2 content:'json write (x) {\n' src:(source__CFlag))
        (SourceLine line_num:3 content:'  echo hi\n' src:(source__CFlag))
        (SourceLine line_num:4 content:'}' src:(source__CFlag))
      ]
    )
  do_fork: T
)

===== CASE: -n -c json write (
    x,
    y,
    z
  ) =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'json write (\n' src:(source.CFlag))
      tval: json
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'json write (\n' src:(source.CFlag))
          tval: json
        )
      ]
    )
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 5
          length: 5
          span_id: 2
          line: (SourceLine line_num:1 content:'json write (\n' src:(source.CFlag))
          tval: write
        )
      ]
    )
  ]
  redirects: []
  typed_args: 
    (ArgList
      left: 
        (Token
          id: Id.Op_LParen
          col: 11
          length: 1
          span_id: 4
          line: (SourceLine line_num:1 content:'json write (\n' src:(source.CFlag))
          tval: _
        )
      pos_args: [
        (expr.Var
          name: 
            (Token
              id: Id.Expr_Name
              col: 4
              length: 1
              span_id: 7
              line: (SourceLine line_num:2 content:'    x,\n' src:(source.CFlag))
              tval: x
            )
        )
        (expr.Var
          name: 
            (Token
              id: Id.Expr_Name
              col: 4
              length: 1
              span_id: 11
              line: (SourceLine line_num:3 content:'    y,\n' src:(source.CFlag))
              tval: y
            )
        )
        (expr.Var
          name: 
            (Token
              id: Id.Expr_Name
              col: 4
              length: 1
              span_id: 15
              line: (SourceLine line_num:4 content:'    z\n' src:(source.CFlag))
              tval: z
            )
        )
      ]
      named_args: []
      right: 
        (Token
          id: Id.Op_RParen
          col: 2
          length: 1
          span_id: 18
          line: (SourceLine line_num:5 content:'  )' src:(source.CFlag))
          tval: _
        )
    )
  do_fork: T
)

===== CASE: -n -c json write () =====


  json write ()
             ^
[ -c flag ]:1: Empty arg list not allowed

===== CASE: -n -c json write ( ) =====


  json write ( )
             ^
[ -c flag ]:1: Empty arg list not allowed

===== CASE: -n -c json write(x) =====


  json write(x)
            ^
[ -c flag ]:1: Space required before (

===== CASE: -n -c json write() =====


  json write()
            ^
[ -c flag ]:1: Space required before (

===== CASE: -n -c f(x) =====


  f(x)
   ^
[ -c flag ]:1: Space required before (
test/parse-errors.sh: line 1495: ysh_var: command not found
test/parse-errors.sh: line 1496: ysh_expr_more: command not found
test/parse-errors.sh: line 1497: ysh_hay_assign: command not found

===== CASE: -n -c echo $'\u{03bc' =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (SingleQuoted
          left: 
            (Token
              id: Id.Left_DollarSingleQuote
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
              tval: '$\''
            )
          tokens: [
            (Token
              id: Id.Unknown_Backslash
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
              tval: '\\'
            )
            (Token
              id: Id.Char_Literals
              col: 8
              length: 6
              span_id: 4
              line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
              tval: 'u{03bc'
            )
          ]
          right: 
            (Token
              id: Id.Right_SingleQuote
              col: 14
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo $\'\\u{03bc\'' src:(source.CFlag))
              tval: '\''
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_backslash -n -c echo parse_backslash $'\u{03bc' =====


  echo parse_backslash $'\u{03bc'
                         ^
[ -c flag ]:1: Invalid char escape in C-style string literal

===== CASE: -n -c const bad = $'\u{03bc' =====


  const bad = $'\u{03bc'
                ^
[ -c flag ]:1: Invalid char escape in C-style string literal

===== CASE: -n -c echo $'\z' =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (SingleQuoted
          left: 
            (Token
              id: Id.Left_DollarSingleQuote
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
              tval: '$\''
            )
          tokens: [
            (Token
              id: Id.Unknown_Backslash
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
              tval: '\\'
            )
            (Token
              id: Id.Char_Literals
              col: 8
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
              tval: z
            )
          ]
          right: 
            (Token
              id: Id.Right_SingleQuote
              col: 9
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo $\'\\z\'' src:(source.CFlag))
              tval: '\''
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c const bad = $'\z' =====


  const bad = $'\z'
                ^
[ -c flag ]:1: Invalid char escape in C-style string literal

===== CASE: -n -c echo $'\101' =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $\'\\101\'' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $\'\\101\'' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (SingleQuoted
          left: 
            (Token
              id: Id.Left_DollarSingleQuote
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo $\'\\101\'' src:(source.CFlag))
              tval: '$\''
            )
          tokens: [
            (Token
              id: Id.Char_Octal3
              col: 7
              length: 4
              span_id: 3
              line: (SourceLine line_num:1 content:'echo $\'\\101\'' src:(source.CFlag))
              tval: '\\101'
            )
          ]
          right: 
            (Token
              id: Id.Right_SingleQuote
              col: 11
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo $\'\\101\'' src:(source.CFlag))
              tval: '\''
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c const bad = $'\101' =====


  const bad = $'\101'
                ^~~~
[ -c flag ]:1: Use \xhh or \u{...} instead of octal escapes in YSH strings

===== CASE: -n -c const bad = c'\xf' =====


  const bad = c'\xf'
               ^
[ -c flag ]:1: Syntax error in expression (near Id.Left_SingleQuote)

===== CASE: -n -c echo "\z" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (Token
              id: Id.Lit_BadBackslash
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
              tval: '\\'
            )
            (Token
              id: Id.Lit_Chars
              col: 7
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
              tval: z
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 8
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo "\\z"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_backslash -n -c echo parse_backslash "\z" =====


  echo parse_backslash "\z"
                        ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c echo "\z" =====


  echo "\z"
        ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c const bad = "\z" =====


  const bad = "\z"
               ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c echo "\u1234" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (Token
              id: Id.Lit_BadBackslash
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
              tval: '\\'
            )
            (Token
              id: Id.Lit_Chars
              col: 7
              length: 5
              span_id: 4
              line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
              tval: u1234
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 12
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo "\\u1234"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo "\u1234" =====


  echo "\u1234"
        ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c const bad = "\u1234" =====


  const bad = "\u1234"
               ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c echo "`echo hi`" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (CommandSub
              left_token: 
                (Token
                  id: Id.Left_Backtick
                  col: 6
                  length: 1
                  span_id: 3
                  line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                  tval: '`'
                )
              child: 
                (command.Simple
                  blame_tok: 
                    (Token
                      id: Id.Lit_Chars
                      col: 0
                      length: 4
                      span_id: 6
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'echo hi'
                          src: 
                            (source.Reparsed
                              what: backticks
                              left_token: 
                                (Token
                                  id: Id.Left_Backtick
                                  col: 6
                                  length: 1
                                  span_id: 3
                                  line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                  tval: '`'
                                )
                              right_token: 
                                (Token
                                  id: Id.Backtick_Right
                                  col: 14
                                  length: 1
                                  span_id: 5
                                  line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                  tval: '`'
                                )
                            )
                        )
                      tval: echo
                    )
                  more_env: []
                  words: [
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          col: 0
                          length: 4
                          span_id: 6
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'echo hi'
                              src: 
                                (source.Reparsed
                                  what: backticks
                                  left_token: 
                                    (Token
                                      id: Id.Left_Backtick
                                      col: 6
                                      length: 1
                                      span_id: 3
                                      line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                  right_token: 
                                    (Token
                                      id: Id.Backtick_Right
                                      col: 14
                                      length: 1
                                      span_id: 5
                                      line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                )
                            )
                          tval: echo
                        )
                      ]
                    )
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          col: 5
                          length: 2
                          span_id: 8
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'echo hi'
                              src: 
                                (source.Reparsed
                                  what: backticks
                                  left_token: 
                                    (Token
                                      id: Id.Left_Backtick
                                      col: 6
                                      length: 1
                                      span_id: 3
                                      line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                  right_token: 
                                    (Token
                                      id: Id.Backtick_Right
                                      col: 14
                                      length: 1
                                      span_id: 5
                                      line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                )
                            )
                          tval: hi
                        )
                      ]
                    )
                  ]
                  redirects: []
                  do_fork: T
                )
              right: 
                (Token
                  id: Id.Backtick_Right
                  col: 14
                  length: 1
                  span_id: 5
                  line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
                  tval: '`'
                )
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 15
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'echo "`echo hi`"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo "`echo hi`" =====


  echo "`echo hi`"
        ^
[ -c flag ]:1: Use $(cmd) instead of backticks (parse_backticks)

===== CASE: -n -c const bad = "`echo hi`" =====


  const bad = "`echo hi`"
               ^
[ -c flag ]:1: Invalid backtick: use $(cmd) or \` in YSH strings

===== CASE: -n -c setvar x = "\z" =====


  setvar x = "\z"
              ^
[ -c flag ]:1: Invalid char escape in double quoted string

===== CASE: -n -c setvar x = $'\z' =====


  setvar x = $'\z'
               ^
[ -c flag ]:1: Invalid char escape in C-style string literal

===== CASE: -n -c echo `echo hi` =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (CommandSub
          left_token: 
            (Token
              id: Id.Left_Backtick
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
              tval: '`'
            )
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 0
                  length: 4
                  span_id: 5
                  line: 
                    (SourceLine
                      line_num: 1
                      content: 'echo hi'
                      src: 
                        (source.Reparsed
                          what: backticks
                          left_token: 
                            (Token
                              id: Id.Left_Backtick
                              col: 5
                              length: 1
                              span_id: 2
                              line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                              tval: '`'
                            )
                          right_token: 
                            (Token
                              id: Id.Backtick_Right
                              col: 13
                              length: 1
                              span_id: 4
                              line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                              tval: '`'
                            )
                        )
                    )
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 0
                      length: 4
                      span_id: 5
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'echo hi'
                          src: 
                            (source.Reparsed
                              what: backticks
                              left_token: 
                                (Token
                                  id: Id.Left_Backtick
                                  col: 5
                                  length: 1
                                  span_id: 2
                                  line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                                  tval: '`'
                                )
                              right_token: 
                                (Token
                                  id: Id.Backtick_Right
                                  col: 13
                                  length: 1
                                  span_id: 4
                                  line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                                  tval: '`'
                                )
                            )
                        )
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 5
                      length: 2
                      span_id: 7
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'echo hi'
                          src: 
                            (source.Reparsed
                              what: backticks
                              left_token: 
                                (Token
                                  id: Id.Left_Backtick
                                  col: 5
                                  length: 1
                                  span_id: 2
                                  line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                                  tval: '`'
                                )
                              right_token: 
                                (Token
                                  id: Id.Backtick_Right
                                  col: 13
                                  length: 1
                                  span_id: 4
                                  line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
                                  tval: '`'
                                )
                            )
                        )
                      tval: hi
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          right: 
            (Token
              id: Id.Backtick_Right
              col: 13
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo `echo hi`' src:(source.CFlag))
              tval: '`'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo "foo = `echo hi`" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 6
              length: 6
              span_id: 3
              line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
              tval: 'foo = '
            )
            (CommandSub
              left_token: 
                (Token
                  id: Id.Left_Backtick
                  col: 12
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                  tval: '`'
                )
              child: 
                (command.Simple
                  blame_tok: 
                    (Token
                      id: Id.Lit_Chars
                      col: 0
                      length: 4
                      span_id: 7
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'echo hi'
                          src: 
                            (source.Reparsed
                              what: backticks
                              left_token: 
                                (Token
                                  id: Id.Left_Backtick
                                  col: 12
                                  length: 1
                                  span_id: 4
                                  line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                  tval: '`'
                                )
                              right_token: 
                                (Token
                                  id: Id.Backtick_Right
                                  col: 20
                                  length: 1
                                  span_id: 6
                                  line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                  tval: '`'
                                )
                            )
                        )
                      tval: echo
                    )
                  more_env: []
                  words: [
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          col: 0
                          length: 4
                          span_id: 7
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'echo hi'
                              src: 
                                (source.Reparsed
                                  what: backticks
                                  left_token: 
                                    (Token
                                      id: Id.Left_Backtick
                                      col: 12
                                      length: 1
                                      span_id: 4
                                      line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                  right_token: 
                                    (Token
                                      id: Id.Backtick_Right
                                      col: 20
                                      length: 1
                                      span_id: 6
                                      line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                )
                            )
                          tval: echo
                        )
                      ]
                    )
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          col: 5
                          length: 2
                          span_id: 9
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'echo hi'
                              src: 
                                (source.Reparsed
                                  what: backticks
                                  left_token: 
                                    (Token
                                      id: Id.Left_Backtick
                                      col: 12
                                      length: 1
                                      span_id: 4
                                      line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                  right_token: 
                                    (Token
                                      id: Id.Backtick_Right
                                      col: 20
                                      length: 1
                                      span_id: 6
                                      line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                                      tval: '`'
                                    )
                                )
                            )
                          tval: hi
                        )
                      ]
                    )
                  ]
                  redirects: []
                  do_fork: T
                )
              right: 
                (Token
                  id: Id.Backtick_Right
                  col: 20
                  length: 1
                  span_id: 6
                  line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
                  tval: '`'
                )
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 21
              length: 1
              span_id: 11
              line: (SourceLine line_num:1 content:'echo "foo = `echo hi`"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_backticks -n -c echo `echo hi` =====


  echo `echo hi`
       ^
[ -c flag ]:1: Use $(cmd) instead of backticks (parse_backticks)

===== CASE: +O parse_backticks -n -c echo "foo = `echo hi`" =====


  echo "foo = `echo hi`"
              ^
[ -c flag ]:1: Use $(cmd) instead of backticks (parse_backticks)

===== CASE: -n -c echo $ =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Dollar
          col: 5
          length: 1
          span_id: 2
          line: (SourceLine line_num:1 content:'echo $' src:(source.CFlag))
          tval: '$'
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo $ =====


  echo $
       ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo $ =====


  echo $
       ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo $: =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo $:' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo $:' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Dollar
          col: 5
          length: 1
          span_id: 2
          line: (SourceLine line_num:1 content:'echo $:' src:(source.CFlag))
          tval: '$'
        )
        (Token
          id: Id.Lit_Colon
          col: 6
          length: 1
          span_id: 3
          line: (SourceLine line_num:1 content:'echo $:' src:(source.CFlag))
          tval: ':'
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo $: =====


  echo $:
       ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo $: =====


  echo $:
       ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "$" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "$"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "$"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "$"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (Token
              id: Id.Lit_Dollar
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo "$"' src:(source.CFlag))
              tval: '$'
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 7
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo "$"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo "$" =====


  echo "$"
        ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "$" =====


  echo "$"
        ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "$:" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (Token
              id: Id.Lit_Dollar
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
              tval: '$'
            )
            (Token
              id: Id.Lit_Chars
              col: 7
              length: 1
              span_id: 4
              line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
              tval: ':'
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 8
              length: 1
              span_id: 5
              line: (SourceLine line_num:1 content:'echo "$:"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo "$:" =====


  echo "$:"
        ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "$:" =====


  echo "$:"
        ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo ${x:-$} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.Unary
              op: 
                (Token
                  id: Id.VTest_ColonHyphen
                  col: 8
                  length: 2
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
                  tval: _
                )
              arg_word: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Dollar
                      col: 10
                      length: 1
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
                      tval: '$'
                    )
                  ]
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 11
              length: 1
              span_id: 6
              line: (SourceLine line_num:1 content:'echo ${x:-$}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo ${x:-$} =====


  echo ${x:-$}
            ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo ${x:-$} =====


  echo ${x:-$}
            ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo ${x:-$:} =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (BracedVarSub
          left: 
            (Token
              id: Id.Left_DollarBrace
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
              tval: '${'
            )
          token: 
            (Token
              id: Id.VSub_Name
              col: 7
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
              tval: x
            )
          var_name: x
          suffix_op: 
            (suffix_op.Unary
              op: 
                (Token
                  id: Id.VTest_ColonHyphen
                  col: 8
                  length: 2
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
                  tval: _
                )
              arg_word: 
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Dollar
                      col: 10
                      length: 1
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
                      tval: '$'
                    )
                    (Token
                      id: Id.Lit_Chars
                      col: 11
                      length: 1
                      span_id: 6
                      line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
                      tval: ':'
                    )
                  ]
                )
            )
          right: 
            (Token
              id: Id.Right_DollarBrace
              col: 12
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'echo ${x:-$:}' src:(source.CFlag))
              tval: '}'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo ${x:-$:} =====


  echo ${x:-$:}
            ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo ${x:-$:} =====


  echo ${x:-$:}
            ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "${x:-$}" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (BracedVarSub
              left: 
                (Token
                  id: Id.Left_DollarBrace
                  col: 6
                  length: 2
                  span_id: 3
                  line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
                  tval: '${'
                )
              token: 
                (Token
                  id: Id.VSub_Name
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
                  tval: x
                )
              var_name: x
              suffix_op: 
                (suffix_op.Unary
                  op: 
                    (Token
                      id: Id.VTest_ColonHyphen
                      col: 9
                      length: 2
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
                      tval: _
                    )
                  arg_word: 
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Dollar
                          col: 11
                          length: 1
                          span_id: 6
                          line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
                          tval: '$'
                        )
                      ]
                    )
                )
              right: 
                (Token
                  id: Id.Right_DollarBrace
                  col: 12
                  length: 1
                  span_id: 7
                  line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
                  tval: '}'
                )
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 13
              length: 1
              span_id: 8
              line: (SourceLine line_num:1 content:'echo "${x:-$}"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo "${x:-$}" =====


  echo "${x:-$}"
             ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "${x:-$}" =====


  echo "${x:-$}"
             ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "${x:-$:}" =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (DoubleQuoted
          left: 
            (Token
              id: Id.Left_DoubleQuote
              col: 5
              length: 1
              span_id: 2
              line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
              tval: '"'
            )
          parts: [
            (BracedVarSub
              left: 
                (Token
                  id: Id.Left_DollarBrace
                  col: 6
                  length: 2
                  span_id: 3
                  line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                  tval: '${'
                )
              token: 
                (Token
                  id: Id.VSub_Name
                  col: 8
                  length: 1
                  span_id: 4
                  line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                  tval: x
                )
              var_name: x
              suffix_op: 
                (suffix_op.Unary
                  op: 
                    (Token
                      id: Id.VTest_ColonHyphen
                      col: 9
                      length: 2
                      span_id: 5
                      line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                      tval: _
                    )
                  arg_word: 
                    (CompoundWord
                      parts: [
                        (Token
                          id: Id.Lit_Dollar
                          col: 11
                          length: 1
                          span_id: 6
                          line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                          tval: '$'
                        )
                        (Token
                          id: Id.Lit_Chars
                          col: 12
                          length: 1
                          span_id: 7
                          line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                          tval: ':'
                        )
                      ]
                    )
                )
              right: 
                (Token
                  id: Id.Right_DollarBrace
                  col: 13
                  length: 1
                  span_id: 8
                  line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
                  tval: '}'
                )
            )
          ]
          right: 
            (Token
              id: Id.Right_DoubleQuote
              col: 14
              length: 1
              span_id: 9
              line: (SourceLine line_num:1 content:'echo "${x:-$:}"' src:(source.CFlag))
              tval: '"'
            )
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: +O parse_dollar -n -c echo "${x:-$:}" =====


  echo "${x:-$:}"
             ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo "${x:-$:}" =====


  echo "${x:-$:}"
             ^
[ -c flag ]:1: Literal $ should be quoted like \$

===== CASE: -n -c echo \( =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\('> ch:'(')}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo \; =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\;'> ch:';')}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo ~ =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.TildeSub token:<Id.Lit_TildeLike '~'>)}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo \! =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\!'> ch:'!')}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo \% =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\%'> ch:'%')}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo \# =====


(command.Simple
  blame_tok: <echo>
  more_env: []
  words: [{<echo>} {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\#'> ch:'#')}]
  redirects: []
  do_fork: T
)

===== CASE: -n -c echo \. =====


  echo \.
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \- =====


  echo \-
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \/ =====


  echo \/
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \a =====


  echo \a
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \Z =====


  echo \Z
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \0 =====


  echo \0
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \9 =====


  echo \9
       ^~
[ -c flag ]:1: Invalid char escape (parse_backslash)

===== CASE: -n -c echo \. \- \/ \a \Z \0 \9 =====


(command.Simple
  blame_tok: 
    (Token
      id: Id.Lit_Chars
      col: 0
      length: 4
      span_id: 0
      line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
      tval: echo
    )
  more_env: []
  words: [
    (CompoundWord
      parts: [
        (Token
          id: Id.Lit_Chars
          col: 0
          length: 4
          span_id: 0
          line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
          tval: echo
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 5
              length: 2
              span_id: 2
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\.'
            )
          ch: .
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 8
              length: 2
              span_id: 4
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\-'
            )
          ch: -
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 11
              length: 2
              span_id: 6
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\/'
            )
          ch: '/'
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 14
              length: 2
              span_id: 8
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\a'
            )
          ch: a
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 17
              length: 2
              span_id: 10
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\Z'
            )
          ch: Z
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 20
              length: 2
              span_id: 12
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\0'
            )
          ch: 0
        )
      ]
    )
    (CompoundWord
      parts: [
        (word_part.EscapedLiteral
          token: 
            (Token
              id: Id.Lit_EscapedChar
              col: 23
              length: 2
              span_id: 14
              line: (SourceLine line_num:1 content:'echo \\. \\- \\/ \\a \\Z \\0 \\9' src:(source.CFlag))
              tval: '\\9'
            )
          ch: 9
        )
      ]
    )
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c ((1 > 0 && 43 > 42)) =====


(command.DParen
  left: 
    (Token
      id: Id.Op_DLeftParen
      col: 0
      length: 2
      span_id: 0
      line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
      tval: _
    )
  child: 
    (arith_expr.Binary
      op_id: Id.Arith_DAmp
      left: 
        (arith_expr.Binary
          op_id: Id.Arith_Great
          left: 
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Digits
                  col: 2
                  length: 1
                  span_id: 1
                  line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
                  tval: 1
                )
              ]
            )
          right: 
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Digits
                  col: 6
                  length: 1
                  span_id: 5
                  line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
                  tval: 0
                )
              ]
            )
        )
      right: 
        (arith_expr.Binary
          op_id: Id.Arith_Great
          left: 
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Digits
                  col: 11
                  length: 2
                  span_id: 9
                  line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
                  tval: 43
                )
              ]
            )
          right: 
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Digits
                  col: 16
                  length: 2
                  span_id: 13
                  line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
                  tval: 42
                )
              ]
            )
        )
    )
  right: 
    (Token
      id: Id.Op_DRightParen
      col: 19
      length: 1
      span_id: 15
      line: (SourceLine line_num:1 content:'((1 > 0 && 43 > 42))' src:(source.CFlag))
      tval: _
    )
  redirects: []
)

===== CASE: -n -c ((1 > 0 && 43 > 42)) =====


  ((1 > 0 && 43 > 42))
  ^~
[ -c flag ]:1: You may want a space between parens (parse_dparen)

===== CASE: -n -c if ((1 > 0 && 43 > 42)); then echo yes; fi =====


(command.If
  if_kw: 
    (Token
      id: Id.KW_If
      col: 0
      length: 2
      span_id: 0
      line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
      tval: if
    )
  arms: [
    (IfArm
      keyword: 
        (Token
          id: Id.KW_If
          col: 0
          length: 2
          span_id: 0
          line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
          tval: if
        )
      cond: 
        (condition.Shell
          commands: [
            (command.Sentence
              child: 
                (command.DParen
                  left: 
                    (Token
                      id: Id.Op_DLeftParen
                      col: 3
                      length: 2
                      span_id: 2
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                          src: (source.CFlag)
                        )
                      tval: _
                    )
                  child: 
                    (arith_expr.Binary
                      op_id: Id.Arith_DAmp
                      left: 
                        (arith_expr.Binary
                          op_id: Id.Arith_Great
                          left: 
                            (CompoundWord
                              parts: [
                                (Token
                                  id: Id.Lit_Digits
                                  col: 5
                                  length: 1
                                  span_id: 3
                                  line: 
                                    (SourceLine
                                      line_num: 1
                                      content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                                      src: (source.CFlag)
                                    )
                                  tval: 1
                                )
                              ]
                            )
                          right: 
                            (CompoundWord
                              parts: [
                                (Token
                                  id: Id.Lit_Digits
                                  col: 9
                                  length: 1
                                  span_id: 7
                                  line: 
                                    (SourceLine
                                      line_num: 1
                                      content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                                      src: (source.CFlag)
                                    )
                                  tval: 0
                                )
                              ]
                            )
                        )
                      right: 
                        (arith_expr.Binary
                          op_id: Id.Arith_Great
                          left: 
                            (CompoundWord
                              parts: [
                                (Token
                                  id: Id.Lit_Digits
                                  col: 14
                                  length: 2
                                  span_id: 11
                                  line: 
                                    (SourceLine
                                      line_num: 1
                                      content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                                      src: (source.CFlag)
                                    )
                                  tval: 43
                                )
                              ]
                            )
                          right: 
                            (CompoundWord
                              parts: [
                                (Token
                                  id: Id.Lit_Digits
                                  col: 19
                                  length: 2
                                  span_id: 15
                                  line: 
                                    (SourceLine
                                      line_num: 1
                                      content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                                      src: (source.CFlag)
                                    )
                                  tval: 42
                                )
                              ]
                            )
                        )
                    )
                  right: 
                    (Token
                      id: Id.Op_DRightParen
                      col: 22
                      length: 1
                      span_id: 17
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                          src: (source.CFlag)
                        )
                      tval: _
                    )
                  redirects: []
                )
              terminator: 
                (Token
                  id: Id.Op_Semi
                  col: 23
                  length: 1
                  span_id: 18
                  line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
                  tval: _
                )
            )
          ]
        )
      then_kw: 
        (Token
          id: Id.KW_Then
          col: 25
          length: 4
          span_id: 20
          line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
          tval: then
        )
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 30
                  length: 4
                  span_id: 22
                  line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 30
                      length: 4
                      span_id: 22
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                          src: (source.CFlag)
                        )
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 35
                      length: 3
                      span_id: 24
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'if ((1 > 0 && 43 > 42)); then echo yes; fi'
                          src: (source.CFlag)
                        )
                      tval: yes
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 38
              length: 1
              span_id: 25
              line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
              tval: _
            )
        )
      ]
      spids: [0 20]
    )
  ]
  else_action: []
  fi_kw: 
    (Token
      id: Id.KW_Fi
      col: 40
      length: 2
      span_id: 27
      line: (SourceLine line_num:1 content:'if ((1 > 0 && 43 > 42)); then echo yes; fi' src:(source.CFlag))
      tval: fi
    )
  redirects: []
)

===== CASE: -n -c if ((1 > 0 && 43 > 42)); then echo yes; fi =====


  if ((1 > 0 && 43 > 42)); then echo yes; fi
     ^~
[ -c flag ]:1: You may want a space between parens (parse_dparen)

===== CASE: -n -c for ((x = 1; x < 5; ++x)); do echo $x; done =====


(command.ForExpr
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
      tval: for
    )
  init: 
    (arith_expr.BinaryAssign
      op_id: Id.Arith_Equal
      left: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 6
              length: 1
              span_id: 3
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
      right: 
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Digits
              col: 10
              length: 1
              span_id: 7
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: 1
            )
          ]
        )
    )
  cond: 
    (arith_expr.Binary
      op_id: Id.Arith_Less
      left: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 13
              length: 1
              span_id: 10
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
      right: 
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Digits
              col: 17
              length: 1
              span_id: 14
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: 5
            )
          ]
        )
    )
  update: 
    (arith_expr.UnaryAssign
      op_id: Id.Arith_DPlus
      child: 
        (SimpleVarSub
          left: 
            (Token
              id: Id.Lit_ArithVarLike
              col: 22
              length: 1
              span_id: 18
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: x
            )
          var_name: x
        )
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 27
          length: 2
          span_id: 23
          line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 30
                  length: 4
                  span_id: 25
                  line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 30
                      length: 4
                      span_id: 25
                      line: 
                        (SourceLine
                          line_num: 1
                          content: 'for ((x = 1; x < 5; ++x)); do echo $x; done'
                          src: (source.CFlag)
                        )
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 35
                          length: 2
                          span_id: 27
                          line: 
                            (SourceLine
                              line_num: 1
                              content: 'for ((x = 1; x < 5; ++x)); do echo $x; done'
                              src: (source.CFlag)
                            )
                          tval: '$x'
                        )
                      var_name: x
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 37
              length: 1
              span_id: 28
              line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 39
          length: 4
          span_id: 30
          line: (SourceLine line_num:1 content:'for ((x = 1; x < 5; ++x)); do echo $x; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)

===== CASE: -n -c for ((x = 1; x < 5; ++x)); do echo $x; done =====


  for ((x = 1; x < 5; ++x)); do echo $x; done
      ^~
[ -c flag ]:1: Bash for loops aren't allowed (parse_dparen)

===== CASE: -n -c if (1 > 0 and 43 > 42) { echo yes } =====


(command.If
  if_kw: <Id.KW_If if>
  arms: [
    (IfArm
      keyword: <Id.KW_If if>
      cond: 
        (condition.YshExpr
          e: 
            (expr.Binary
              op: <Id.Expr_And and>
              left: 
                (expr.Compare
                  left: (expr.Const c:<Id.Expr_DecInt 1>)
                  ops: [<Id.Arith_Great _>]
                  comparators: [(expr.Const c:<Id.Expr_DecInt 0>)]
                )
              right: 
                (expr.Compare
                  left: (expr.Const c:<Id.Expr_DecInt 43>)
                  ops: [<Id.Arith_Great _>]
                  comparators: [(expr.Const c:<Id.Expr_DecInt 42>)]
                )
            )
        )
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<yes>}]
          redirects: []
          do_fork: T
        )
      ]
      spids: [0]
    )
  ]
  else_action: []
  redirects: []
)

===== CASE: -n -c if ( (1 > 0 and 43 > 42) ) { echo yes } =====


(command.If
  if_kw: <Id.KW_If if>
  arms: [
    (IfArm
      keyword: <Id.KW_If if>
      cond: 
        (condition.YshExpr
          e: 
            (expr.Binary
              op: <Id.Expr_And and>
              left: 
                (expr.Compare
                  left: (expr.Const c:<Id.Expr_DecInt 1>)
                  ops: [<Id.Arith_Great _>]
                  comparators: [(expr.Const c:<Id.Expr_DecInt 0>)]
                )
              right: 
                (expr.Compare
                  left: (expr.Const c:<Id.Expr_DecInt 43>)
                  ops: [<Id.Arith_Great _>]
                  comparators: [(expr.Const c:<Id.Expr_DecInt 42>)]
                )
            )
        )
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<yes>}]
          redirects: []
          do_fork: T
        )
      ]
      spids: [0]
    )
  ]
  else_action: []
  redirects: []
)

===== CASE: -n -c = =====


  =
   ^
[ -c flag ]:1: Syntax error in expression (near Id.Eof_Real)

===== CASE: -n -c _ =====


  _
   ^
[ -c flag ]:1: Syntax error in expression (near Id.Eof_Real)

===== CASE: -n -c const d = { name:
42 } =====


  const d = { name:
                   ^
[ -c flag ]:1: Syntax error in expression (near Id.Op_Newline)
test/parse-errors.sh: line 1504: ysh_nested_proc: command not found

===== CASE: -n -c 
  proc p(x) {
    echo hi
    var x = 2  # Cannot redeclare param
  }
   =====


      var x = 2  # Cannot redeclare param
          ^
[ -c flag ]:4: 'x' was already declared

===== CASE: -n -c 
  proc p {
    var x = 1
    echo hi
    var x = 2  # Cannot redeclare local
  }
   =====


      var x = 2  # Cannot redeclare local
          ^
[ -c flag ]:5: 'x' was already declared

===== CASE: -n -c 
  proc p {
    var x = 1
    echo hi
    const x = 2  # Cannot redeclare local
  }
   =====


      const x = 2  # Cannot redeclare local
            ^
[ -c flag ]:5: 'x' was already declared

===== CASE: -n -c 
  proc p(x, :out) {
    var out = 2   # Cannot redeclare out param
  }
   =====


    proc p(x, :out) {
              ^
[ -c flag ]:2: Syntax error in expression (near Id.Arith_Colon)

===== CASE: -n -c 
  proc p {
    var out = 2   # Cannot redeclare out param
    cd /tmp { 
      var out = 3
    }
  }
   =====


        var out = 3
            ^~~
[ -c flag ]:5: 'out' was already declared

===== CASE: -n -c 
  var x = 1
  proc p {
    echo hi
    var x = 2
  }

  proc p2 {
    var x = 3
  }
   =====


(command.CommandList
  children: [
    (command.VarDecl
      keyword: <Id.KW_Var var>
      lhs: [(NameType name:<Id.Expr_Name x>)]
      rhs: (expr.Const c:<Id.Expr_DecInt 1>)
    )
    (command.Proc
      keyword: <Id.KW_Proc proc>
      name: <p>
      sig: (proc_sig__Open)
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace _>
          children: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<hi>}]
              redirects: []
              do_fork: T
            )
            (command.VarDecl
              keyword: <Id.KW_Var var>
              lhs: [(NameType name:<Id.Expr_Name x>)]
              rhs: (expr.Const c:<Id.Expr_DecInt 2>)
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Proc
      keyword: <Id.KW_Proc proc>
      name: <p2>
      sig: (proc_sig__Open)
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace _>
          children: [
            (command.VarDecl
              keyword: <Id.KW_Var var>
              lhs: [(NameType name:<Id.Expr_Name x>)]
              rhs: (expr.Const c:<Id.Expr_DecInt 3>)
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
  ]
)

===== CASE: -n -c 
  proc p(x) {
    var y = 1
    setvar L = "L"  # ERROR: not declared
  }
   =====


      setvar L = "L"  # ERROR: not declared
             ^
[ -c flag ]:4: 'L' hasn't been declared

===== CASE: -n -c 
  proc p(x) {
    const c = 123
    setvar c = 42  # ERROR: cannot modify constant
  }
   =====


      setvar c = 42  # ERROR: cannot modify constant
             ^
[ -c flag ]:4: Can't modify constant 'c'

===== CASE: -n -c 
  proc p(x) {
    setvar x = "X"  # is mutating params allowed?  I guess why not.
  }
   =====


(command.Proc
  keyword: <Id.KW_Proc proc>
  name: <p>
  sig: 
    (proc_sig.Closed
      word_params: [(Param blame_tok:<Id.Expr_Name x> name:x)]
      pos_params: []
      named_params: []
    )
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace _>
      children: [
        (command.PlaceMutation
          keyword: <Id.KW_SetVar setvar>
          lhs: [(place_expr.Var name:<Id.Expr_Name x>)]
          op: <Id.Arith_Equal _>
          rhs: (DQ <X>)
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
)

===== CASE: -n -c 
  case (x) {
    (else) { = 1; }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: (command.Expr keyword:<Id.Lit_Equals '='> e:(expr.Const c:<Id.Expr_DecInt 1>))
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (x) {
    (else) { echo 1 }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<1>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (x) {
    (else) { = 1 }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [(command.Expr keyword:<Id.Lit_Equals '='> e:(expr.Const c:<Id.Expr_DecInt 1>))]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (x) {
    (else) { = 1 } 
 
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [(command.Expr keyword:<Id.Lit_Equals '='> e:(expr.Const c:<Id.Expr_DecInt 1>))]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (x) {
    (else) { = 1 }  # Comment
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [(command.Expr keyword:<Id.Lit_Equals '='> e:(expr.Const c:<Id.Expr_DecInt 1>))]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (3) {
    (3) { echo hi }
    # comment line
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Const c:<Id.Expr_DecInt 3>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<hi>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (x) {
    (else) { echo 1 } 
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<1>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) { (else) { echo } }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [(command.Simple blame_tok:<echo> more_env:[] words:[{<echo>}] redirects:[] do_fork:T)]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    *.py { echo "python" }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Lit_Star '*'>
      pattern: (pat.Words words:[{<Id.Lit_Star '*'> <.py>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    (obj.attr) { echo "python" }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: 
        (pat.YshExprs
          exprs: [
            (Attribute
              obj: (expr.Var name:<Id.Expr_Name obj>)
              op: <Id.Expr_Dot .>
              attr: <Id.Expr_Name attr>
              ctx: expr_context.Store
            )
          ]
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    (0) { echo "python" }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 0>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    ("main.py") { echo "python" }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) { ("main.py") { echo "python" } }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    ("main.py") {
      echo "python" } } =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    ("main.py") {
      echo "python" }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    ("main.py") { echo "python"
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (foo) {
    ("main.py") {
      echo "python"
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name foo>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(DQ <main.py>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <python>)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (add(10, 32)) {
    (40 + 2) { echo Found the answer }
    (else) { echo Incorrect
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: 
    (case_arg.YshExpr
      e: 
        (expr.FuncCall
          func: (expr.Var name:<Id.Expr_Name add>)
          args: 
            (ArgList
              left: <Id.Op_LParen _>
              pos_args: [(expr.Const c:<Id.Expr_DecInt 10>) (expr.Const c:<Id.Expr_DecInt 32>)]
              named_args: []
              right: <Id.Op_RParen _>
            )
        )
    )
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: 
        (pat.YshExprs
          exprs: [
            (expr.Binary
              op: <Id.Arith_Plus _>
              left: (expr.Const c:<Id.Expr_DecInt 40>)
              right: (expr.Const c:<Id.Expr_DecInt 2>)
            )
          ]
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<Found>} {<the>} {<answer>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<Incorrect>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (file) {
    / dot* '.py' / {
      echo Python
    }

    / dot* ('.cc' | '.h') /
    {
      echo C++
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name file>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: 
        (pat.Eggex
          eggex: 
            (re.Seq
              children: [
                (re.Repeat
                  child: <Id.Expr_Name dot>
                  op: (re_repeat.Op op:<Id.Arith_Star _>)
                )
                (SQ <.py>)
              ]
            )
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<Python>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: 
        (pat.Eggex
          eggex: 
            (re.Seq
              children: [
                (re.Repeat
                  child: <Id.Expr_Name dot>
                  op: (re_repeat.Op op:<Id.Arith_Star _>)
                )
                (re.Group child:(re.Alt children:[(SQ <.cc>) (SQ <.h>)]))
              ]
            )
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<C> <Id.Lit_Other '+'> <Id.Lit_Other '+'>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (lang) {
      en-US
    | en-CA
    | en-UK {
      echo Hello
    }
    fr-FR |
    fr-CA {
      echo Bonjour
    }





    (else) {
      echo o/
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name lang>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <en-US>
      pattern: (pat.Words words:[{<en-US>} {<en-CA>} {<en-UK>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<Hello>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <fr-FR>
      pattern: (pat.Words words:[{<fr-FR>} {<fr-CA>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<Bonjour>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<'o/'>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (num) {
    (1) | (2) {
      echo number
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name num>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: 
        (pat.YshExprs
          exprs: [(expr.Const c:<Id.Expr_DecInt 1>) (expr.Const c:<Id.Expr_DecInt 2>)]
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<number>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case (num) {
      (1) | (2) | (3)
    | (4) | (5) {
      echo small
    }

    (else) {
      echo large
    }
  }
   =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name num>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: 
        (pat.YshExprs
          exprs: [
            (expr.Const c:<Id.Expr_DecInt 1>)
            (expr.Const c:<Id.Expr_DecInt 2>)
            (expr.Const c:<Id.Expr_DecInt 3>)
            (expr.Const c:<Id.Expr_DecInt 4>)
            (expr.Const c:<Id.Expr_DecInt 5>)
          ]
        )
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<small>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat__Else)
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {<large>}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  case
  (add(10, 32)) {
      (40 + 2) { echo Found the answer }
      (else) { echo Incorrect }
  }
   =====


    case
        ^
[ -c flag ]:2: Expected a word to match against

===== CASE: -n -c 
  case (file)
  {
    ('README') | / dot* '.md' / { echo Markdown }
  }
   =====


    case (file)
               ^
[ -c flag ]:2: Expected word type Id.Lit_LBrace, got Id.Op_Newline

===== CASE: -n -c 
  case (file)
  {
    {
      echo Python
    }
  }
   =====


    case (file)
               ^
[ -c flag ]:2: Expected word type Id.Lit_LBrace, got Id.Op_Newline

===== CASE: -n -c 
  case (file)
  {
    cc h {
      echo C++
    }
  }
   =====


    case (file)
               ^
[ -c flag ]:2: Expected word type Id.Lit_LBrace, got Id.Op_Newline

===== CASE: -n -c 
  case (lang) {
      en-US
    | ('en-CA')
    | / 'en-UK' / {
      echo Hello
    }
  }
   =====


      | ('en-CA')
        ^
[ -c flag ]:4: Expected case pattern

===== CASE: -n -c 
  case (lang) {
    else) {
      echo o/
    }
  }
   =====


      else) {
          ^
[ -c flag ]:3: Expected word type Id.Lit_LBrace, got Id.Op_RParen

===== CASE: -n -c 
  case (num) {
      (1) | (2) | (3)
    | (4) | (5) {
      echo small
    }

    (6) | (else) {
      echo large
    }
  }
   =====


      (6) | (else) {
             ^~~~
[ -c flag ]:8: Syntax error in expression (near Id.Expr_Else)

===== CASE: -n -c 
  case $foo {
    ("main.py") {
      echo "python"
    }
  }
   =====


    case $foo {
              ^
[ -c flag ]:2: Expected word type Id.KW_In, got Id.Lit_LBrace

===== CASE: -n -c 
  case (x)
  {
    *.py { echo "python" }
  }
   =====


    case (x)
            ^
[ -c flag ]:2: Expected word type Id.Lit_LBrace, got Id.Op_Newline

===== CASE: -n -c 
  case (foo) in
    *.py {
      echo "python"
    }
  esac
   =====


    case (foo) in
               ^~
[ -c flag ]:2: Expected word type Id.Lit_LBrace, got Id.KW_In

===== CASE: -n -c 
  case $foo {
    bar) {
      echo "python"
    }
  }
   =====


    case $foo {
              ^
[ -c flag ]:2: Expected word type Id.KW_In, got Id.Lit_LBrace

===== CASE: -n -c 
  case (x) {
    {
      echo "python"
    }
  }
   =====


        echo "python"
        ^~~~
[ -c flag ]:4: Expected word type Id.Lit_LBrace, got Id.Word_Compound

===== CASE: -n -c 
  case (x {
    *.py { echo "python" }
  }
   =====


    case (x {
            ^
[ -c flag ]:2: Syntax error in expression (near Id.Op_LBrace)

===== CASE: -n -c 
  case (x) {
    *.py) { echo "python" }
  }
   =====


      *.py) { echo "python" }
          ^
[ -c flag ]:3: Expected word type Id.Lit_LBrace, got Id.Op_RParen

===== CASE: -n -c case (x) { word { echo word; } (3) { echo expr; } /'eggex'/ { echo eggex; } } =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
case (x) {
  word    { echo word; } (3)     { echo expr; } /'eggex'/ { echo eggex; } } =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
case (x) {
  word    { echo word; }
  (3)     { echo expr; } /'eggex'/ { echo eggex; } } =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
case (x) {
  word    { echo word; }
  (3)     { echo expr; }
  /'eggex'/ { echo eggex; } } =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
case (x) {
  word    { echo word; }
  (3)     { echo expr; }
  /'eggex'/ { echo eggex; }
} =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
case (x) {
word    { echo word; }
(3)     { echo expr; }
/'eggex'/ { echo eggex; }
} =====


(command.Case
  case_kw: <Id.KW_Case case>
  to_match: (case_arg.YshExpr e:(expr.Var name:<Id.Expr_Name x>))
  arms_start: <Id.Lit_LBrace '{'>
  arms: [
    (CaseArm
      left: <word>
      pattern: (pat.Words words:[{<word>}])
      middle: <Id.Lit_LBrace '{'>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<word>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Op_LParen _>
      pattern: (pat.YshExprs exprs:[(expr.Const c:<Id.Expr_DecInt 3>)])
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<expr>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
    (CaseArm
      left: <Id.Arith_Slash _>
      pattern: (pat.Eggex eggex:(SQ <eggex>))
      middle: <Id.Lit_LBrace _>
      action: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {<eggex>}]
              redirects: []
              do_fork: T
            )
          terminator: <Id.Op_Semi _>
        )
      ]
      right: <Id.Lit_RBrace '}'>
    )
  ]
  arms_end: <Id.Lit_RBrace _>
  redirects: []
)

===== CASE: -n -c 
  for x in (obj) {
    echo $x
  }
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x]
  iterable: (for_iter.YshExpr e:(expr.Var name:<Id.Expr_Name obj>) blame:<Id.KW_In in>)
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  redirects: []
)

===== CASE: -n -c 
  for x in (obj); do
    echo $x
  done
   =====


    for x in (obj); do
                  ^
[ -c flag ]:2: Expected { after iterable expression

===== CASE: -n -c 
  for x, y in SPAM EGGS; do
    echo $x
  done
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x y]
  iterable: (for_iter.Words words:[{<SPAM>} {<EGGS>}])
  semi_tok: <Id.Op_Semi _>
  body: 
    (command.DoGroup
      left: <Id.KW_Do do>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.KW_Done done>
    )
  redirects: []
)

===== CASE: -n -c 
  for x-y in SPAM EGGS; do
    echo $x
  done
   =====


    for x-y in SPAM EGGS; do
        ^~~
[ -c flag ]:2: Invalid loop variable name 'x-y'

===== CASE: -n -c 
  for x, y, z in SPAM EGGS; do
    echo $x
  done
   =====


    for x, y, z in SPAM EGGS; do
    ^~~
[ -c flag ]:2: Expected at most 2 loop variables

===== CASE: -n -c 
  for w, x, y, z in SPAM EGGS; do
    echo $x
  done
   =====


    for w, x, y, z in SPAM EGGS; do
                 ^
[ -c flag ]:2: Unexpected word after 3 loop variables

===== CASE: -n -c 
  for x, y in SPAM EGGS
  do
    echo $x
  done
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x y]
  iterable: (for_iter.Words words:[{<SPAM>} {<EGGS>}])
  body: 
    (command.DoGroup
      left: <Id.KW_Do do>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      right: <Id.KW_Done done>
    )
  redirects: []
)

===== CASE: -n -c for const in (x) { echo $var } =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [const]
  iterable: (for_iter.YshExpr e:(expr.Var name:<Id.Expr_Name x>) blame:<Id.KW_In in>)
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName var)}]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  redirects: []
)

===== CASE: -n -c 
  for x in bare {
    echo $x
  }
   =====


    for x in bare {
             ^~~~
[ -c flag ]:2: Surround this word with either parens or quotes (parse_bare_word)

===== CASE: -n -c 
  for x in a b {
    echo $x
  }
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x]
  iterable: (for_iter.Words words:[{<a>} {<b>}])
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  redirects: []
)

===== CASE: -n -c 
  for x in *.py {
    echo $x
  }
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x]
  iterable: (for_iter.Words words:[{<Id.Lit_Star '*'> <.py>}])
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  redirects: []
)

===== CASE: -n -c 
  for x in "quoted" {
    echo $x
  }
   =====


(command.ForEach
  keyword: <Id.KW_For for>
  iter_names: [x]
  iterable: (for_iter.Words words:[{(DQ <quoted>)}])
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {($ Id.VSub_DollarName x)}]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  redirects: []
)

===== CASE: -n -c 
  var snippets = [{status: 42}]
  for snippet in (snippets) {
    if (snippet["status"] === 0) {
      echo hi
    }

    # The $ causes a weird error
    if ($snippet["status"] === 0) {
      echo hi
    }
  }
   =====


      if ($snippet["status"] === 0) {
          ^~~~~~~~
[ -c flag ]:9: In expressions, remove $ and use `snippet`, or sometimes "$snippet"

===== CASE: -n -c 
  var content = [ 1, 2, 4 ]
  var count = 0

  # The $ causes a weird error
  while (count < $len(content)) {
    setvar count += 1
  }
   =====


    while (count < $len(content)) {
                   ^~~~
[ -c flag ]:6: In expressions, remove $ and use `len`, or sometimes "$len"

===== CASE: -n -c for x in & =====


  for x in &
           ^
[ -c flag ]:1: Invalid word in for loop

===== CASE: -n -c for (( i=0; i<10; i++ )) ls =====


  for (( i=0; i<10; i++ )) ls
                           ^~
[ -c flag ]:1: Invalid word after for expression

===== CASE: -n -c for ( i=0; i<10; i++ ) =====


  for ( i=0; i<10; i++ )
      ^
[ -c flag ]:1: Expected loop variable (a constant word)

===== CASE: -n -c for $x in 1 2 3; do echo $i; done =====


  for $x in 1 2 3; do echo $i; done
      ^~
[ -c flag ]:1: Expected loop variable (a constant word)

===== CASE: -n -c for x.y in 1 2 3; do echo $i; done =====


  for x.y in 1 2 3; do echo $i; done
      ^~~
[ -c flag ]:1: Invalid loop variable name 'x.y'

===== CASE: -n -c for x in 1 2 3; & =====


  for x in 1 2 3; &
                  ^
[ -c flag ]:1: Expected word type Id.KW_Do, got Id.Op_Amp

===== CASE: -n -c for foo BAD =====


  for foo BAD
             ^
[ -c flag ]:1: Expected loop variable (a constant word)

===== CASE: -n -c for var in x; do echo $var; done =====


(command.ForEach
  keyword: 
    (Token
      id: Id.KW_For
      col: 0
      length: 3
      span_id: 0
      line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
      tval: for
    )
  iter_names: [var]
  iterable: 
    (for_iter.Words
      words: [
        (CompoundWord
          parts: [
            (Token
              id: Id.Lit_Chars
              col: 11
              length: 1
              span_id: 6
              line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
              tval: x
            )
          ]
        )
      ]
    )
  semi_tok: 
    (Token
      id: Id.Op_Semi
      col: 12
      length: 1
      span_id: 7
      line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
      tval: _
    )
  body: 
    (command.DoGroup
      left: 
        (Token
          id: Id.KW_Do
          col: 14
          length: 2
          span_id: 9
          line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
          tval: do
        )
      children: [
        (command.Sentence
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  col: 17
                  length: 4
                  span_id: 11
                  line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
                  tval: echo
                )
              more_env: []
              words: [
                (CompoundWord
                  parts: [
                    (Token
                      id: Id.Lit_Chars
                      col: 17
                      length: 4
                      span_id: 11
                      line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
                      tval: echo
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      left: 
                        (Token
                          id: Id.VSub_DollarName
                          col: 22
                          length: 4
                          span_id: 13
                          line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
                          tval: '$var'
                        )
                      var_name: var
                    )
                  ]
                )
              ]
              redirects: []
              do_fork: T
            )
          terminator: 
            (Token
              id: Id.Op_Semi
              col: 26
              length: 1
              span_id: 14
              line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
              tval: _
            )
        )
      ]
      right: 
        (Token
          id: Id.KW_Done
          col: 28
          length: 4
          span_id: 16
          line: (SourceLine line_num:1 content:'for var in x; do echo $var; done' src:(source.CFlag))
          tval: done
        )
    )
  redirects: []
)
test/parse-errors.sh: line 1513: parse_at: command not found
test/parse-errors.sh: line 867: _parse-error: command not found

===== CASE: -n -c write -- $f(x) =====


  write -- $f(x)
             ^
[ -c flag ]:1: Space required before (

===== CASE: -n -c write -- @[sorted(x)] =====


  write -- @[sorted(x)]
                   ^
[ -c flag ]:1: Unexpected left paren (might need a space before it)

===== CASE: -n -c write -- @[sorted(x)] =====


(command.Simple
  blame_tok: <write>
  more_env: []
  words: [
    {<write>}
    {<-->}
    {
      (word_part.ExprSub
        left: <Id.Lit_AtLBracket '@['>
        child: 
          (expr.FuncCall
            func: (expr.Var name:<Id.Expr_Name sorted>)
            args: 
              (ArgList
                left: <Id.Op_LParen _>
                pos_args: [(expr.Var name:<Id.Expr_Name x>)]
                named_args: []
                right: <Id.Op_RParen _>
              )
          )
        right: <Id.Op_RBracket _>
      )
    }
  ]
  redirects: []
  do_fork: T
)

===== CASE: -n -c 
f() {
  write -- @[sorted(x)]
}
 =====


    write -- @[sorted(x)]
                     ^
[ -c flag ]:3: Unexpected left paren (might need a space before it)

===== CASE: -n -c 
f() {
  write -- @[sorted(x)]
}
 =====


(command.ShFunction
  name_tok: <f>
  name: f
  body: 
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          blame_tok: <write>
          more_env: []
          words: [
            {<write>}
            {<-->}
            {
              (word_part.ExprSub
                left: <Id.Lit_AtLBracket '@['>
                child: 
                  (expr.FuncCall
                    func: (expr.Var name:<Id.Expr_Name sorted>)
                    args: 
                      (ArgList
                        left: <Id.Op_LParen _>
                        pos_args: [(expr.Var name:<Id.Expr_Name x>)]
                        named_args: []
                        right: <Id.Op_RParen _>
                      )
                  )
                right: <Id.Op_RBracket _>
              )
            }
          ]
          redirects: []
          do_fork: T
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
)

===== CASE: -n -c 
f() {
  write -- @sorted (( z ))
}
 =====


    write -- @sorted (( z ))
                     ^~
[ -c flag ]:3: Invalid word while parsing command list

===== CASE: 
  code="printf % x"
  eval $code
   =====


  %
   ^
[ printf word at line 1 of [ eval word at line 3 of [ -c flag ] ] ]:1: Expected a printf format character

===== CASE: 
  x="echo )"
  eval $x
   =====


  echo )
       ^
[ eval word at line 3 of [ -c flag ] ]:1: Invalid word while parsing command line

----------------------


===== CASE: test/parse-errors/01-bad-func.sh =====

  foo (,)
       ^
'test/parse-errors/01-bad-func.sh':15: Syntax error in expression (near Id.Arith_Comma)

===== CASE: test/parse-errors/02-bad-func.sh =====

  foo()
         ^
'test/parse-errors/02-bad-func.sh':3: Unexpected word while parsing compound command

===== CASE: test/parse-errors/05-unterminated-single.sh =====

A
B
  echo 'C
       ^
'test/parse-errors/05-unterminated-single.sh':5: Unexpected EOF in single-quoted string that began here

===== CASE: test/parse-errors/06-unterminated-double-long.sh =====

A
B
  echo 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789 "
                                                                                               ^
'test/parse-errors/06-unterminated-double-long.sh':9: Unexpected EOF reading double-quoted string that began here

===== CASE: test/parse-errors/06-unterminated-double.sh =====

A
B
  echo "0123456789 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789 0123456789
       ^
'test/parse-errors/06-unterminated-double.sh':6: Unexpected EOF reading double-quoted string that began here

===== CASE: test/parse-errors/07-unterminated-here-doc-2.sh =====

  cat << "$@"
         ^
'test/parse-errors/07-unterminated-here-doc-2.sh':2: Invalid here doc delimiter

===== CASE: test/parse-errors/07-unterminated-here-doc.sh =====

  cat <<EOF
      ^~
'test/parse-errors/07-unterminated-here-doc.sh':5: Couldn't find terminator for here doc that starts here