(command.CommandList
  children: [
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (C {<Id.Lit_LBracket '['>} {<-n>} {(DQ ($ Id.VSub_DollarName '$BASH_VERSION'))} 
          {<Id.Lit_RBracket ']'>}
        )
        (C {<exec>} {<bash>} {($ Id.VSub_Number '$0')})
      ]
    )
    (C {<set>} {<-u>})
    (command.ShFunction
      name: die
      body: 
        (BraceGroup
          children: [
            (command.Sentence
              child: 
                (command.Simple
                  words: [{<echo>} {(DQ ($ Id.VSub_At '$@'))}]
                  redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
            (command.Sentence
              child: (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<2>})
              terminator: <Id.Op_Semi _>
            )
          ]
        )
    )
    (command.Sentence
      child: 
        (command.AndOr
          ops: [Id.Op_DPipe]
          children: [
            (C {<source>} 
              {
                (DQ 
                  (braced_var_sub
                    token: <Id.VSub_Name BASH_SOURCE>
                    suffix_op: 
                      (suffix_op.Unary
                        tok: <Id.VOp1_Percent '%'>
                        arg_word: {<Id.Lit_Slash '/'> <Id.Lit_Other '*'>}
                      )
                  ) <'/../CmdlineGL.lib'>
                )
              }
            )
            (C {<die>} 
              {
                (DQ <'Can\'t find CmdlineGL.lib ('> 
                  (braced_var_sub
                    token: <Id.VSub_Name BASH_SOURCE>
                    suffix_op: 
                      (suffix_op.Unary
                        tok: <Id.VOp1_Percent '%'>
                        arg_word: {<Id.Lit_Slash '/'> <Id.Lit_Other '*'>}
                      )
                  ) <'/../CmdlineGL.lib)'>
                )
              }
            )
          ]
        )
      terminator: <Id.Op_Semi _>
    )
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (C {<CmdlineGL_LoadLib>} {<RenderLoop>} {<ModelViewer>} {<Cube>})
        (C {<die>} {(DQ <'Can\'t load required libraries'>)})
      ]
    )
    (command.ShFunction
      name: Init
      body: 
        (BraceGroup
          children: [
            (C {<glEnable>} {<GL_NORMALIZE>} {<GL_DEPTH_TEST>})
            (C {<glEnable>} {<GL_LIGHTING>})
            (C {<glEnable>} {<GL_TEXTURE_2D>})
            (C {<glShadeModel>} {<GL_SMOOTH>})
            (C {<glClearColor>} {(SQ <'#000033'>)})
            (C {<glBlendFunc>} {<GL_SRC_ALPHA>} {<GL_ONE>})
            (C {<CmdlineGL_LoadTex>} {<checker>})
            (C {<glLoadIdentity>})
            (C {<glEnable>} {<GL_LIGHT0>})
            (C {<glLight>} {<GL_LIGHT0>} {<GL_AMBIENT>} {<0.8>} {<0.8>} {<0.8>} {<0>})
            (C {<glLight>} {<GL_LIGHT0>} {<GL_DIFFUSE>} {<1>} {<0.8>} {<0.8>} {<0>})
            (C {<glLight>} {<GL_LIGHT0>} {<GL_SPECULAR>} {<0.8>} {<0.8>} {<0.8>} {<0>})
            (C {<glLight>} {<GL_LIGHT0>} {<GL_POSITION>} {<10>} {<10>} {<10>} {<1>})
            (C {<glClear>} {<GL_COLOR_BUFFER_BIT>} {<GL_DEPTH_BUFFER_BIT>})
          ]
        )
    )
    (command.ShFunction
      name: RenderLoop_Render
      body: 
        (BraceGroup
          children: [
            (C {<ModelViewer_Update>})
            (C {<glLoadIdentity>})
            (C {<ModelViewer_ApplyMatrix>})
            (C {<glColor>} {<0.5>} {<0.5>} {<0.5>} {<1>})
            (C {<glBindTexture>} {<GL_TEXTURE_2D>} {<checker>})
            (C {<Cube>})
            (C {<glFlush>})
            (C {<cglSwapBuffers>})
            (C {<glClear>} {<GL_COLOR_BUFFER_BIT>} {<GL_DEPTH_BUFFER_BIT>})
          ]
        )
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:blend)
          op: assign_op.Equal
          rhs: {<0>}
          spids: [288]
        )
      ]
    )
    (command.ShFunction
      name: RenderLoop_DispatchEvent
      body: 
        (BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: 
                    (condition.Shell
                      commands: [
                        (command.Sentence
                          child: 
                            (command.Pipeline
                              children: [(C {<ModelViewer_DispatchEvent>} {(DQ ($ Id.VSub_At '$@'))})]
                              negated: T
                            )
                          terminator: <Id.Op_Semi _>
                        )
                      ]
                    )
                  action: [
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.LogicalAnd
                                          left: 
                                            (bool_expr.Binary
                                              op_id: Id.BoolBinary_GlobDEqual
                                              left: {(DQ ($ Id.VSub_Number '$1'))}
                                              right: {<K>}
                                            )
                                          right: 
                                            (bool_expr.Binary
                                              op_id: Id.BoolBinary_GlobDEqual
                                              left: {(DQ ($ Id.VSub_Number '$2'))}
                                              right: {<Id.Lit_Other '+'>}
                                            )
                                        )
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (command.Case
                              to_match: {(DQ ($ Id.VSub_Number '$3'))}
                              arms: [
                                (case_arm
                                  pat_list: [{<q>}]
                                  action: [
                                    (command.ShAssignment
                                      pairs: [
                                        (assign_pair
                                          lhs: (sh_lhs_expr.Name name:RenderLoop_Done)
                                          op: assign_op.Equal
                                          rhs: {<1>}
                                          spids: [352]
                                        )
                                      ]
                                    )
                                  ]
                                  spids: [349 350 354 -1]
                                )
                                (case_arm
                                  pat_list: [{<b>}]
                                  action: [
                                    (command.AndOr
                                      ops: [Id.Op_DAmp Id.Op_DPipe]
                                      children: [
                                        (command.DParen
                                          child: 
                                            (arith_expr.BinaryAssign
                                              op_id: Id.Arith_Equal
                                              left: <Id.Lit_ArithVarLike blend>
                                              right: 
                                                (arith_expr.Unary
                                                  op_id: Id.Arith_Bang
                                                  child: <Id.Lit_ArithVarLike blend>
                                                )
                                            )
                                        )
                                        (BraceGroup
                                          children: [
                                            (command.Sentence
                                              child: (C {<glEnable>} {<GL_BLEND>})
                                              terminator: <Id.Op_Semi _>
                                            )
                                            (command.Sentence
                                              child: (C {<glDisable>} {<GL_DEPTH_TEST>})
                                              terminator: <Id.Op_Semi _>
                                            )
                                          ]
                                        )
                                        (BraceGroup
                                          children: [
                                            (command.Sentence
                                              child: (C {<glDisable>} {<GL_BLEND>})
                                              terminator: <Id.Op_Semi _>
                                            )
                                            (command.Sentence
                                              child: (C {<glEnable>} {<GL_DEPTH_TEST>})
                                              terminator: <Id.Op_Semi _>
                                            )
                                          ]
                                        )
                                      ]
                                    )
                                  ]
                                  spids: [357 358 405 -1]
                                )
                              ]
                            )
                          ]
                          spids: [312 337]
                        )
                      ]
                    )
                  ]
                  spids: [298 309]
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: main
      body: (BraceGroup children:[(C {<Init>}) (C {<RenderLoop_Run>}) (C {<cglQuit>})])
    )
    (command.If
      arms: [
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.DParen
                      child: 
                        (arith_expr.Binary
                          op_id: Id.Arith_Less
                          left: {($ Id.VSub_Pound '$#')}
                          right: {<Id.Lit_Digits 1>}
                        )
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [(C {<CmdlineGL_Start>} {<rw>}) (C {<die>} {(DQ <'Can\'t init CmdlineGL'>)})]
            )
            (C {<main>})
          ]
          spids: [438 452]
        )
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.DBracket
                      expr: 
                        (bool_expr.Binary
                          op_id: Id.BoolBinary_GlobDEqual
                          left: {(DQ ($ Id.VSub_Number '$1'))}
                          right: {(DQ <--record>)}
                        )
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.ShFunction
              name: CmdlineGL
              body: 
                (BraceGroup
                  children: [
                    (command.Sentence
                      child: 
                        (command.Pipeline
                          children: [(C {<tee>} {<replay>}) (C {<command>} {<CmdlineGL>})]
                          negated: F
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                )
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [(C {<CmdlineGL_Start>} {<rw>}) (C {<die>} {(DQ <'Can\'t init CmdlineGL'>)})]
            )
            (C {<main>})
          ]
          spids: [470 487]
        )
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.DBracket
                      expr: 
                        (bool_expr.Binary
                          op_id: Id.BoolBinary_GlobDEqual
                          left: {(DQ ($ Id.VSub_Number '$1'))}
                          right: {(DQ <--dump>)}
                        )
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (C {<CmdlineGL_Start>} {<stdout>})
                (C {<die>} {(DQ <'Can\'t init CmdlineGL state'>)})
              ]
            )
            (C {<main>})
          ]
          spids: [525 542]
        )
      ]
      else_action: [
        (C {<echo>} {(SQ <'Usage: ImgCube.sh [ --record | --dump ]'>)})
        (C {<echo>})
        (C {<echo>} {(SQ <'   --dump    Dump all output to stdout at a virtual 40fps'>)})
        (C {<echo>} {(SQ <'   --record  Run CmdlineGL, but duplicate all output to "./replay"'>)})
        (C {<echo>})
        (C {<echo>} {(SQ <'   Recordings can be played by piping them into CmdlineGL.'>)})
        (C {<echo>} {(SQ <'   For instance:'>)})
        (C {<echo>} {(SQ <'         $ CmdlineGL <replay >/dev/null'>)})
      ]
    )
  ]
)