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#!/usr/bin/env bash |
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# |
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# Test combination of var ops. |
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# |
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# NOTE: There are also slice tests in {array,arith-context}.test.sh. |
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|
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#### String slice |
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foo=abcdefg |
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echo ${foo:1:3} |
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## STDOUT: |
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bcd |
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## END |
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|
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#### Cannot take length of substring slice |
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# These are runtime errors, but we could make them parse time errors. |
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v=abcde |
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echo ${#v:1:3} |
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## status: 1 |
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## OK osh status: 2 |
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# zsh actually implements this! |
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## OK zsh stdout: 3 |
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## OK zsh status: 0 |
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|
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#### Out of range string slice: begin |
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# out of range begin doesn't raise error in bash, but in mksh it skips the |
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# whole thing! |
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foo=abcdefg |
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echo _${foo:100:3} |
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echo $? |
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## STDOUT: |
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_ |
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0 |
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## END |
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## BUG mksh stdout-json: "\n0\n" |
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|
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#### Out of range string slice: length |
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# OK in both bash and mksh |
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foo=abcdefg |
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echo _${foo:3:100} |
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echo $? |
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## STDOUT: |
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_defg |
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0 |
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## END |
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## BUG mksh stdout-json: "_defg\n0\n" |
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|
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#### Negative start index |
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foo=abcdefg |
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echo ${foo: -4:3} |
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## stdout: def |
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|
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#### Negative start index respects unicode |
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foo=abcd-μ- |
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echo ${foo: -4:3} |
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## stdout: d-μ |
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## BUG mksh stdout: -μ |
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|
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#### Negative second arg is position, not length! |
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foo=abcdefg |
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echo ${foo:3:-1} ${foo: 3: -2} ${foo:3 :-3 } |
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## stdout: def de d |
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## BUG mksh stdout: defg defg defg |
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|
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#### Negative start index respects unicode |
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foo=abcd-μ- |
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echo ${foo: -5: -3} |
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## stdout: cd |
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## BUG mksh stdout: d-μ- |
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|
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#### String slice with math |
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# I think this is the $(()) language inside? |
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i=1 |
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foo=abcdefg |
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echo ${foo: i+4-2 : i + 2} |
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## stdout: def |
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|
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#### Slice undefined |
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echo -${undef:1:2}- |
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set -o nounset |
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echo -${undef:1:2}- |
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echo -done- |
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## STDOUT: |
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-- |
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## END |
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## status: 1 |
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# mksh doesn't respect nounset! |
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## BUG mksh status: 0 |
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## BUG mksh STDOUT: |
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-- |
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-- |
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-done- |
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## END |
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|
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#### Slice UTF-8 String |
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# mksh slices by bytes. |
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foo='--μ--' |
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echo ${foo:1:3} |
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## stdout: -μ- |
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## BUG mksh stdout: -μ |
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|
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#### Slice string with invalid UTF-8 results in empty string and warning |
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s=$(echo -e "\xFF")bcdef |
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echo -${s:1:3}- |
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## status: 0 |
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## STDOUT: |
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-- |
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## END |
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## STDERR: |
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[??? no location ???] warning: Invalid start of UTF-8 character |
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## END |
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## BUG bash/mksh/zsh status: 0 |
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## BUG bash/mksh/zsh STDOUT: |
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-bcd- |
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## END |
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## BUG bash/mksh/zsh stderr-json: "" |
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|
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|
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#### Slice string with invalid UTF-8 with strict_word_eval |
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shopt -s strict_word_eval || true |
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echo slice |
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s=$(echo -e "\xFF")bcdef |
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echo -${s:1:3}- |
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## status: 1 |
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## STDOUT: |
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slice |
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## END |
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## N-I bash/mksh/zsh status: 0 |
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## N-I bash/mksh/zsh STDOUT: |
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slice |
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-bcd- |
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## END |
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|
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#### Slice with an index that's an array itself not allowed |
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i=(3 4 5) |
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mystr=abcdefg |
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echo assigned |
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echo ${mystr:$i:2} |
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## status: 1 |
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## STDOUT: |
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assigned |
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## END |
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## BUG mksh/bash status: 0 |
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## BUG mksh/bash STDOUT: |
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assigned |
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de |
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## END |
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|
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#### Slice with an assoc array |
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declare -A A=(['5']=3 ['6']=4) |
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mystr=abcdefg |
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echo assigned |
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echo ${mystr:$A:2} |
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## status: 1 |
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## STDOUT: |
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assigned |
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## END |
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## N-I mksh stdout-json: "" |
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## BUG bash/zsh status: 0 |
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## BUG bash/zsh STDOUT: |
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assigned |
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ab |
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## END |
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|
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#### Simple ${@:offset} |
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|
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set -- 4 5 6 |
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result=$(argv.py ${@:0}) |
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echo ${result//"$0"/'SHELL'} |
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argv.py ${@:1} |
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argv.py ${@:2} |
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## STDOUT: |
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['SHELL', '4', '5', '6'] |
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['4', '5', '6'] |
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['5', '6'] |
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## END |
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## N-I mksh status: 1 |
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## N-I mksh stdout-json: "\n" |
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|
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|
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#### ${@:offset} and ${*:offset} |
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case $SH in (zsh) return ;; esac # zsh is very different |
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|
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argv.shell-name-checked () { |
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argv.py "${@//$0/SHELL}" |
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} |
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fun() { |
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argv.shell-name-checked -${*:0}- # include $0 |
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argv.shell-name-checked -${*:1}- # from $1 |
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argv.shell-name-checked -${*:3}- # last parameter $3 |
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argv.shell-name-checked -${*:4}- # empty |
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argv.shell-name-checked -${*:5}- # out of boundary |
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argv.shell-name-checked -${@:0}- |
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argv.shell-name-checked -${@:1}- |
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argv.shell-name-checked -${@:3}- |
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argv.shell-name-checked -${@:4}- |
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argv.shell-name-checked -${@:5}- |
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argv.shell-name-checked "-${*:0}-" |
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argv.shell-name-checked "-${*:1}-" |
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argv.shell-name-checked "-${*:3}-" |
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argv.shell-name-checked "-${*:4}-" |
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argv.shell-name-checked "-${*:5}-" |
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argv.shell-name-checked "-${@:0}-" |
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argv.shell-name-checked "-${@:1}-" |
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argv.shell-name-checked "-${@:3}-" |
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argv.shell-name-checked "-${@:4}-" |
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argv.shell-name-checked "-${@:5}-" |
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} |
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fun "a 1" "b 2" "c 3" |
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## STDOUT: |
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['-SHELL', 'a', '1', 'b', '2', 'c', '3-'] |
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['-a', '1', 'b', '2', 'c', '3-'] |
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['-c', '3-'] |
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['--'] |
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['--'] |
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['-SHELL', 'a', '1', 'b', '2', 'c', '3-'] |
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['-a', '1', 'b', '2', 'c', '3-'] |
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['-c', '3-'] |
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['--'] |
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['--'] |
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['-SHELL a 1 b 2 c 3-'] |
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['-a 1 b 2 c 3-'] |
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['-c 3-'] |
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['--'] |
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['--'] |
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['-SHELL', 'a 1', 'b 2', 'c 3-'] |
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['-a 1', 'b 2', 'c 3-'] |
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['-c 3-'] |
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['--'] |
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['--'] |
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## END |
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## N-I mksh status: 1 |
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## N-I mksh stdout-json: "" |
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## BUG zsh stdout-json: "" |
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|
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#### ${@:offset:length} and ${*:offset:length} |
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case $SH in (zsh) return ;; esac # zsh is very different |
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|
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argv.shell-name-checked () { |
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argv.py "${@//$0/SHELL}" |
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} |
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fun() { |
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argv.shell-name-checked -${*:0:2}- # include $0 |
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argv.shell-name-checked -${*:1:2}- # from $1 |
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argv.shell-name-checked -${*:3:2}- # last parameter $3 |
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argv.shell-name-checked -${*:4:2}- # empty |
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argv.shell-name-checked -${*:5:2}- # out of boundary |
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argv.shell-name-checked -${@:0:2}- |
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argv.shell-name-checked -${@:1:2}- |
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argv.shell-name-checked -${@:3:2}- |
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argv.shell-name-checked -${@:4:2}- |
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argv.shell-name-checked -${@:5:2}- |
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argv.shell-name-checked "-${*:0:2}-" |
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argv.shell-name-checked "-${*:1:2}-" |
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argv.shell-name-checked "-${*:3:2}-" |
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argv.shell-name-checked "-${*:4:2}-" |
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argv.shell-name-checked "-${*:5:2}-" |
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argv.shell-name-checked "-${@:0:2}-" |
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argv.shell-name-checked "-${@:1:2}-" |
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argv.shell-name-checked "-${@:3:2}-" |
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argv.shell-name-checked "-${@:4:2}-" |
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argv.shell-name-checked "-${@:5:2}-" |
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} |
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fun "a 1" "b 2" "c 3" |
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## STDOUT: |
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['-SHELL', 'a', '1-'] |
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['-a', '1', 'b', '2-'] |
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['-c', '3-'] |
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['--'] |
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['--'] |
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['-SHELL', 'a', '1-'] |
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['-a', '1', 'b', '2-'] |
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['-c', '3-'] |
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['--'] |
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['--'] |
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['-SHELL a 1-'] |
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['-a 1 b 2-'] |
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['-c 3-'] |
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['--'] |
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['--'] |
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['-SHELL', 'a 1-'] |
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['-a 1', 'b 2-'] |
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['-c 3-'] |
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['--'] |
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['--'] |
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## END |
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## N-I mksh status: 1 |
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## N-I mksh stdout-json: "" |
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## BUG zsh stdout-json: "" |
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|
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#### ${@:0:1} |
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set a b c |
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result=$(echo ${@:0:1}) |
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echo ${result//"$0"/'SHELL'} |
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## STDOUT: |
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SHELL |
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## END |
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## N-I mksh stdout-json: "\n" |
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|
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#### ${array[@]::0} |
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array=(1 2 3) |
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argv.py ${array[@]::0} |
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## STDOUT: |
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[] |
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## END |
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## N-I mksh/zsh status: 1 |
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## N-I mksh/zsh stdout-json: "" |
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|
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#### ${array[@]::} |
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array=(1 2 3) |
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argv.py ${array[@]::} |
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## STDOUT: |
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[] |
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## END |
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## N-I mksh/zsh status: 1 |
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## N-I mksh/zsh status: 1 |
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## N-I mksh/zsh stdout-json: "" |