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#!/usr/bin/env bash |
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|
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#### Remove const suffix |
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v=abcd |
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echo ${v%d} ${v%%cd} |
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## stdout: abc ab |
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|
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#### Remove const prefix |
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v=abcd |
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echo ${v#a} ${v##ab} |
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## stdout: bcd cd |
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|
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#### Remove const suffix is vectorized on user array |
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a=(1a 2a 3a) |
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argv.py ${a[@]%a} |
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## stdout: ['1', '2', '3'] |
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## status: 0 |
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## N-I dash/mksh/ash stdout-json: "" |
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## N-I dash/ash status: 2 |
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## N-I mksh status: 1 |
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|
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#### Remove const suffix is vectorized on $@ array |
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set -- 1a 2a 3a |
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argv.py ${@%a} |
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## stdout: ['1', '2', '3'] |
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## status: 0 |
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## N-I dash/ash stdout: ['1a', '2a', '3'] |
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## N-I dash/ash status: 0 |
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## N-I mksh stdout-json: "" |
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## N-I mksh status: 1 |
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|
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#### Remove const suffix from undefined |
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echo ${undef%suffix} |
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## stdout: |
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|
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#### Remove shortest glob suffix |
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v=aabbccdd |
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echo ${v%c*} |
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## stdout: aabbc |
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|
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#### Remove longest glob suffix |
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v=aabbccdd |
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echo ${v%%c*} |
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## stdout: aabb |
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|
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#### Remove shortest glob prefix |
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v=aabbccdd |
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echo ${v#*b} |
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## stdout: bccdd |
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|
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#### Remove longest glob prefix |
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v=aabbccdd |
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echo ${v##*b} |
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## stdout: ccdd |
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|
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#### Strip char class |
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v=abc |
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echo ${v%[[:alpha:]]} |
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## stdout: ab |
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## N-I mksh stdout: abc |
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|
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#### Strip unicode prefix |
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# NOTE: LANG is set to utf-8. |
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v='μ-' |
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echo ${v#?} # ? is a glob that stands for one character |
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echo ${v##?} |
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v='-μ' |
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echo ${v%?} # ? is a glob that stands for one character |
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echo ${v%%?} |
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## STDOUT: |
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- |
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- |
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- |
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- |
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## BUG dash/mksh/ash stdout-repr: '\xbc-\n\xbc-\n-\xce\n-\xce\n' |
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## BUG zsh stdout-repr: '\n\n\n\n' |
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|
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#### Bug fix: Test that you can remove everything with glob |
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s='--x--' |
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argv.py "${s%%-*}" "${s%-*}" "${s#*-}" "${s##*-}" |
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## STDOUT: |
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['', '--x-', '-x--', ''] |
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## END |
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|
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#### Test that you can remove everything with const |
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s='abcd' |
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argv.py "${s%%abcd}" "${s%abcd}" "${s#abcd}" "${s##abcd}" |
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# failure case: |
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argv.py "${s%%abcde}" "${s%abcde}" "${s#abcde}" "${s##abcde}" |
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## STDOUT: |
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['', '', '', ''] |
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['abcd', 'abcd', 'abcd', 'abcd'] |
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## END |
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|
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#### Prepend using replacement of # |
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# This case was found in Kubernetes and others |
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array=(aa bb '') |
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argv.py ${array[@]/#/prefix-} |
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## STDOUT: |
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['prefix-aa', 'prefix-bb', 'prefix-'] |
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## END |
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## N-I dash/ash status: 2 |
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## N-I dash/ash stdout-json: "" |
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## N-I mksh status: 1 |
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## N-I mksh stdout-json: "" |
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|
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#### Append using replacement of % |
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array=(aa bb '') |
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argv.py ${array[@]/%/-suffix} |
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## STDOUT: |
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['aa-suffix', 'bb-suffix', '-suffix'] |
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## END |
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## N-I dash/ash status: 2 |
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## N-I dash/ash stdout-json: "" |
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## N-I mksh status: 1 |
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## N-I mksh stdout-json: "" |
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|
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#### strip unquoted and quoted [ |
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# I guess dash and mksh treat unquoted [ as an invalid glob? |
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var='[foo]' |
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echo ${var#[} |
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echo ${var#"["} |
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echo "${var#[}" |
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echo "${var#"["}" |
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## STDOUT: |
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foo] |
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foo] |
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foo] |
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foo] |
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## END |
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## OK dash/mksh STDOUT: |
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[foo] |
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foo] |
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[foo] |
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foo] |
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## END |
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## BUG zsh stdout-json: "" |
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## BUG zsh status: 1 |
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|
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#### strip unquoted and quoted [] |
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# LooksLikeGlob('[]') is true |
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# I guess dash, mksh, and zsh treat unquoted [ as an invalid glob? |
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var='[]foo[]' |
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echo ${var#[]} |
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echo ${var#"[]"} |
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echo "${var#[]}" |
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echo "${var#"[]"}" |
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## STDOUT: |
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foo[] |
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foo[] |
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foo[] |
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foo[] |
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## END |
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## OK dash/mksh/zsh STDOUT: |
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[]foo[] |
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foo[] |
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[]foo[] |
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foo[] |
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## END |
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|
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#### strip unquoted and quoted ? |
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var='[foo]' |
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echo ${var#?} |
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echo ${var#"?"} |
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echo "${var#?}" |
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echo "${var#"?"}" |
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## STDOUT: |
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foo] |
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[foo] |
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foo] |
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[foo] |
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## END |
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|
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#### strip unquoted and quoted [a] |
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var='[a]foo[]' |
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echo ${var#[a]} |
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echo ${var#"[a]"} |
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echo "${var#[a]}" |
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echo "${var#"[a]"}" |
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## STDOUT: |
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[a]foo[] |
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foo[] |
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[a]foo[] |
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foo[] |
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## END |
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|
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#### Nested % and # operators (bug reported by Crestwave) |
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var=$'\n' |
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argv.py "${var#?}" |
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argv.py "${var%''}" |
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argv.py "${var%"${var#?}"}" |
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var='a' |
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argv.py "${var#?}" |
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argv.py "${var%''}" |
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argv.py "${var%"${var#?}"}" |
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## STDOUT: |
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[''] |
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['\n'] |
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['\n'] |
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[''] |
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['a'] |
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['a'] |
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## END |
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## N-I dash STDOUT: |
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['\\n'] |
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['$\\n'] |
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['$'] |
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[''] |
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['a'] |
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['a'] |
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## END |
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|
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#### strip * (bug regression) |
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x=abc |
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argv.py "${x#*}" |
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argv.py "${x##*}" |
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argv.py "${x%*}" |
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argv.py "${x%%*}" |
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## STDOUT: |
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['abc'] |
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[''] |
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['abc'] |
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[''] |
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## END |
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## BUG zsh STDOUT: |
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['abc'] |
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[''] |
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['ab'] |
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[''] |
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## END |
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|
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#### strip ? |
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x=abc |
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argv.py "${x#?}" |
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argv.py "${x##?}" |
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argv.py "${x%?}" |
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argv.py "${x%%?}" |
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## STDOUT: |
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['bc'] |
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['bc'] |
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['ab'] |
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['ab'] |
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## END |
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|
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#### strip all |
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x=abc |
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argv.py "${x#abc}" |
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argv.py "${x##abc}" |
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argv.py "${x%abc}" |
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argv.py "${x%%abc}" |
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## STDOUT: |
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[''] |
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[''] |
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[''] |
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[''] |
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## END |
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|
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#### strip none |
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x=abc |
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argv.py "${x#}" |
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argv.py "${x##}" |
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argv.py "${x%}" |
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argv.py "${x%%}" |
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## STDOUT: |
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['abc'] |
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['abc'] |
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['abc'] |
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['abc'] |
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## END |
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|
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#### strip all unicode |
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x=μabcμ |
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echo "${x#?abc?}" |
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echo "${x##?abc?}" |
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echo "${x%?abc?}" |
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echo "${x%%?abc?}" |
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## STDOUT: |
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|
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|
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|
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|
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## BUG dash/mksh/ash STDOUT: |
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μabcμ |
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μabcμ |
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μabcμ |
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μabcμ |
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## END |
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|
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#### strip none unicode |
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x=μabcμ |
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argv.py "${x#}" |
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argv.py "${x##}" |
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argv.py "${x%}" |
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argv.py "${x%%}" |
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## STDOUT: |
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['\xce\xbcabc\xce\xbc'] |
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['\xce\xbcabc\xce\xbc'] |
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['\xce\xbcabc\xce\xbc'] |
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['\xce\xbcabc\xce\xbc'] |
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## END |