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runtime(sh): Do not conflate empty array and function declarations in Bash
Although the "=" character is permitted in function names, a construct that parses as a variable assignment is preferred to it parsing as a function declaration. See the updated test file "sh_functions_bash.sh" for details. fixes: #20183 closes: #20205 Co-authored-by: Doug Kearns <dougkearns@gmail.com> Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Aliaksei Budavei
committed by
Christian Brabandt
Christian Brabandt
parent
f0e874a129
commit
23c77d8ec8
+12
-26
@@ -3,30 +3,7 @@
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" Maintainer: This runtime file is looking for a new maintainer.
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" Previous Maintainers: Charles E. Campbell
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" Lennart Schultz <Lennart.Schultz@ecmwf.int>
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" Last Change: 2024 Mar 04 by Vim Project {{{1
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" 2024 Nov 03 by Aliaksei Budavei <0x000c70 AT gmail DOT com> improved bracket expressions, #15941
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" 2025 Jan 06 add $PS0 to bashSpecialVariables #16394
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" 2025 Jan 18 add bash coproc, remove duplicate syn keywords #16467
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" 2025 Mar 21 update shell capability detection #16939
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" 2025 Apr 03 command substitution opening paren at EOL #17026
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" 2025 Apr 10 improve shell detection #17084
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" 2025 Apr 29 match escaped chars in test operands #17221
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" 2025 May 06 improve single-quote string matching in parameter expansions
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" 2025 May 06 match KornShell compound arrays
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" 2025 May 10 improve wildcard character class lists
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" 2025 May 21 improve supported KornShell features
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" 2025 Jun 16 change how sh_fold_enabled is reset #17557
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" 2025 Jul 18 properly delete :commands #17785
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" 2025 Aug 23 bash: add support for ${ cmd;} and ${|cmd;} #18084
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" 2025 Sep 23 simplify ksh logic, update sh statements #18355
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" 2026 Jan 15 highlight command switches that contain a digit
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" 2026 Feb 11 improve support for KornShell function names and variables
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" 2026 Feb 15 improve comment handling #19414
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" 2026 Mar 23 improve matching of function definitions #19638
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" 2026 Apr 02 improve matching of function definitions #19849
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" 2026 Apr 19 improve detection of special variables #20016
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" 2026 May 14 don't highlight parens as part of the function name #20219
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" }}}
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" Last Change: 2026 May 17 by Vim Project
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" Version: 208
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" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
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" For options and settings, please use: :help ft-sh-syntax
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@@ -281,7 +258,7 @@ syn cluster shDerefList contains=shDeref,shDerefSimple,shDerefVar,shDerefSpecial
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syn cluster shDerefVarList contains=shDerefOffset,shDerefOp,shDerefVarArray,shDerefOpError
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syn cluster shEchoList contains=shArithmetic,shBracketExpr,shCommandSub,shCommandSubBQ,shDerefVarArray,shSubshare,shValsub,shDeref,shDerefSimple,shEscape,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq,shEchoQuote
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syn cluster shExprList1 contains=shBracketExpr,shNumber,shOperator,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
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syn cluster shExprList2 contains=@shExprList1,@shCaseList,shTest
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syn cluster shExprList2 contains=@shExprList1,@shCaseList,shTest,shFunctionNameError
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syn cluster shFunctionCmds contains=shFor,shCaseEsac,shIf,shRepeat,shDblBrace,shDblParen
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if exists("b:is_ksh88") || exists("b:is_mksh")
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" Offer "shFunctionCmds" as is.
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@@ -307,7 +284,7 @@ if exists("b:is_kornshell") || exists("b:is_bash")
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endif
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syn cluster shPPSLeftList contains=shAlias,shArithmetic,shBracketExpr,shCmdParenRegion,shCommandSub,shSubshare,shValsub,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shEcho,shEscape,shExDoubleQuote,shExpr,shExSingleQuote,shHereDoc,shNumber,shOperator,shOption,shPosnParm,shHereString,shRedir,shSingleQuote,shSpecial,shStatement,shSubSh,shTest,shVariable
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syn cluster shPPSRightList contains=shDeref,shDerefSimple,shEscape,shPosnParm
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syn cluster shSubShList contains=shBracketExpr,@shCommandSubList,shCommandSubBQ,shSubshare,shValsub,shCaseEsac,shColon,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shIf,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq,shOperator
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syn cluster shSubShList contains=shBracketExpr,@shCommandSubList,shCommandSubBQ,shSubshare,shValsub,shCaseEsac,shColon,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shIf,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq,shOperator,shFunctionNameError
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syn cluster shTestList contains=shArithmetic,shBracketExpr,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shSpecialDQ,shExDoubleQuote,shExpr,shExSingleQuote,shNumber,shOperator,shSingleQuote,shTest,shTestOpr
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syn cluster shNoZSList contains=shSpecialNoZS
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syn cluster shForList contains=shTestOpr,shNumber,shDerefSimple,shDeref,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shArithmetic
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@@ -676,6 +653,12 @@ if exists("b:is_bash")
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syn match shFunctionTwo "\%#=1\%(\%(\<\k\+\|[^()<>|&$;\t ]\+\)\+\)\@>\ze\s*\%(()\ze\)\=\_s*{" contained skipwhite skipnl nextgroup=shFunctionExpr contains=shFunctionParens
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syn match shFunctionThree "\%#=1^\s*\zs\%(\%(\<\k\+\|[^()<>|&$;\t ]\+\)\+\)\@>\s*()\ze\_s*((\@!" skipwhite skipnl nextgroup=shFunctionSubSh contains=shFunctionParens
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syn match shFunctionFour "\%#=1\%(\%(\<\k\+\|[^()<>|&$;\t ]\+\)\+\)\@>\ze\s*\%(\%(()\ze\)\=\)\@>\_s*((\@!" contained skipwhite skipnl nextgroup=shFunctionSubSh contains=shFunctionParens
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" Claim empty array assignments.
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syn match shArrayEmptyDecl "\%#=1\ze\%(\<\h\w*=\)\@>()" transparent nextgroup=shVariable
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if !exists("g:sh_no_error")
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syn match shFunctionNameError "\%#=1\%(\%(\<\h\w*\)\@>=\)\%(\%(\w\+\)\@>=\=\)\+()" skipwhite skipnl nextgroup=shExpr,shSubSh
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endif
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elseif exists("b:is_ksh88")
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" AT&T ksh88
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syn match shFunctionCmdOne "^\s*\zs\h\w*\s*()\ze\_s*\%(\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)" skipwhite skipnl nextgroup=@shFunctionCmds contains=shFunctionParens
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@@ -970,6 +953,9 @@ if !exists("skip_sh_syntax_inits")
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hi def link shInError Error
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hi def link shParenError Error
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hi def link shTestError Error
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if exists("b:is_bash")
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hi def link shFunctionNameError Error
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endif
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if exists("b:is_kornshell") || exists("b:is_posix")
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hi def link shDTestError Error
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endif
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+1
-1
@@ -17,4 +17,4 @@
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| +0#0000e05#a8a8a8255@1|f+0#af5f00255#ffffff0|o|r| +0#0000000&|x| |i+0#af5f00255&|n| +0#0000000&|1+0#e000002&| +0#0000000&|2+0#e000002&| +0#0000000&@60
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|-+0#0000e05#a8a8a8255| |d+0#af5f00255#ffffff0|o| +0#0000000&@70
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@57|1|9|,|1| @9|1|6|%|
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+2
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@@ -16,5 +16,5 @@
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|3+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|}+0#e000e06&| +0#0000000&@63
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|2+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|)+0#af5f00255&| +0#0000000&@67
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@57|3|7|,|1| @9|8|6|%|
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||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|e+0#af5f00255&|v|a|l| +0#0000000&|!+0#af5f00255&|?+0#0000000&|\+0#e000e06&|#| +0#0000000&|"+0#af5f00255&|\+0#e000e06&|"|$|1|\|"|"+0#af5f00255&| +0#0000000&@50
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| +0#0000e05#a8a8a8255@1|n+0#00e0e07#ffffff0|a|m|e|s|p|a|c|e| |(+0#e000e06&|)| +0#0000000&@60
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|-+0#0000e05#a8a8a8255| |{+0#e000e06#ffffff0| +0#0000000&|e+0#af5f00255&|c|h|o| +0#e000002&|$+0#e000e06&|#|;+0#af5f00255&| +0#0000000&@62
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||+0#0000e05#a8a8a8255| >}+0#e000e06#ffffff0|;+0#0000000&| |n|a|m|e|s|p|a|c|e| |$+0#e000e06&|@| +0#0000000&@57
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |W|h|e|t|h|e|r| |"|=|"| |b|e|l|o|n|g|s| |t|o| |a| |n|a|m|e| |o|r| |d|e|l|i|m|i|t|s| |a| |n|a|m|e| |d|e|p|e|n|d|s| |o|n| |w|h|e|t|h|e|r| +0#0000000&@3
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |t|h|e| |r|e|s|e|r|v|e|d| |w|o|r|d| |"|f|u|n|c|t|i|o|n|"| |i|s| |p|r|e|s|e|n|t|,| |i|f| |s|o|,| |t|h|e|n| |"|=|"| |i|s| |p|a|r|t| |o|f| +0#0000000&@3
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |t|h|e| |f|u|n|c|t|i|o|n| |n|a|m|e|;| |e|l|s|e|,| |"|=|"| |d|e|l|i|m|i|t|s| |t|h|e| |n|a|m|e| |o|f| |a| |v|a|r|i|a|b|l|e| |w|h|e|n| |t|h|i|s| +0#0000000&
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |n|a|m|e| |i|s| |g|i|v|e|n| |i|n| |a|l|p|h|a|n|u|m|e|r|i|c| |c|h|a|r|a|c|t|e|r|s| |a|n|d| |"|_|"|s| |b|e|f|o|r|e| |t|h|e| |l|e|f|t|m|o|s|t| +0#0000000&@1
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |"|=|"|;| |o|t|h|e|r|w|i|s|e|,| |"|=|"| |i|s| |p|a|r|t| |o|f| |t|h|e| |f|u|n|c|t|i|o|n| |n|a|m|e| |w|h|e|n| |t|h|i|s| |n|a|m|e| |h|a|s| +0#0000000&@3
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| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |o|n|e| |o|r| |m|o|r|e| |s|u|p@1|o|r|t|e|d| |N|O|N|-|a|l|p|h|a|n|u|m|e|r|i|c| |(|o|r| |"|_|"|)| |c|h|a|r|a|c|t|e|r|s| |b|e|f|o|r|e| |"|=|"|.| +0#0000000&
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| +0#0000e05#a8a8a8255@1|x+0#00e0e07#ffffff0|s|=+0#0000000&|(+0#e000e06&|)| +0#0000000&@67
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| +0#0000e05#a8a8a8255@1|(+0#e000e06#ffffff0| +0#0000000&@71
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| +0#0000e05#a8a8a8255@1| +0#e000e06#ffffff0@3|x+0#00e0e07&|s|=+0#0000000&|(+0#e000e06&|)| +0#0000000&@63
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|2+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|f+0#af5f00255&|u|n|c|t|i|o|n| +0#0000000&|f+0#00e0e07&|=|f|=| +0#0000000&@51
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|2+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|i+0#af5f00255&|f| |:+0#0000000&|;+0#af5f00255&| +0#0000000&|t+0#af5f00255&|h|e|n| +0#0000000&|e+0#af5f00255&|c|h|o| +0#e000002&|$+0#e000e06&|*|;+0#af5f00255&| +0#0000000&|f+0#af5f00255&|i|;| +0#0000000&|f|\+0#e000e06&|=|f+0#0000000&|\+0#e000e06&|=| +0#0000000&|$+0#e000e06&|*| +0#0000000&@31
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|2+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|}+0#e000e06&|;+0#af5f00255&| +0#0000000&|f|\+0#e000e06&|=|f+0#0000000&| |$+0#e000e06&|*| +0#0000000&@58
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|
||||
||+0#0000e05#a8a8a8255| |)+0#af5f00255#ffffff0|;+0#0000000&| |f+0#00e0e07&|=+0#0000000&| |f|\|=+0#af5f00255&| +0#0000000&|f+0#00e0e07&|=+0#0000000&| |f+0#00e0e07&|=+0#0000000&| @57
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
|
||||
| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |P|a|r|e|n|s| |a|r|e| |n|o|t| |e|s|c|a|p|e|d|,| |h|e|n|c|e| |t|h|i|s| |i|s| |i|n|v|a|l|i|d| |v|a|r|i|a|b|l|e| |a|s@1|i|g|n|m|e|n|t|.| +0#0000000&@4
|
||||
| +0#0000e05#a8a8a8255@1|f+0#ffffff16#ff404010|=|f|(|)| +0#0000000#ffffff0@67
|
||||
| +0#0000e05#a8a8a8255@1|{+0#e000e06#ffffff0| +0#0000000&@71
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3>f+0#ffffff16#ff404010|=|f|=|(|)| +0#0000000#ffffff0@62
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|(+0#af5f00255&| +0#0000000&@67
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@7|f+0#ffffff16#ff404010|=|f|=|f|(|)| +0#0000000#ffffff0@57
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@7|i+0#af5f00255&|f| |:+0#0000000&|;+0#af5f00255&| +0#0000000&|t+0#af5f00255&|h|e|n| +0#0000000&|:|;+0#af5f00255&| +0#0000000&|f+0#af5f00255&|i| +0#0000000&@48
|
||||
| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|)+0#af5f00255&| +0#0000000&@67
|
||||
| +0#0000e05#a8a8a8255@1|}+0#e000e06#ffffff0| +0#0000000&@71
|
||||
|~+0#4040ff13&| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
|~| @73
|
||||
| +0#0000000&@56|9|1|,|5| @9|B|o|t|
|
||||
@@ -47,9 +47,50 @@ if :; then
|
||||
}
|
||||
@α! "$1"
|
||||
)
|
||||
eval !?\# "$1"
|
||||
eval !?\# "\"$1\""
|
||||
fi
|
||||
|
||||
namespace ()
|
||||
{ echo $#;
|
||||
}; namespace $@
|
||||
|
||||
# Whether "=" belongs to a name or delimits a name depends on whether
|
||||
# the reserved word "function" is present, if so, then "=" is part of
|
||||
# the function name; else, "=" delimits the name of a variable when this
|
||||
# name is given in alphanumeric characters and "_"s before the leftmost
|
||||
# "="; otherwise, "=" is part of the function name when this name has
|
||||
# one or more supported NON-alphanumeric (or "_") characters before "=".
|
||||
xs=()
|
||||
(
|
||||
echo $(( 1 + ${#xs[*]} ))
|
||||
xs=()
|
||||
{
|
||||
echo $(( 2 + ${#xs[*]} ))
|
||||
xs=()
|
||||
if :; then echo $(( 3 + ${#xs[*]} )); fi
|
||||
}
|
||||
)
|
||||
|
||||
iδ=() (
|
||||
=id=() {
|
||||
===()
|
||||
if :; then echo $*; fi; === $*
|
||||
}; =id= $*
|
||||
); id= iδ= iδ= iδ=
|
||||
|
||||
function f=() (
|
||||
function f=f {
|
||||
function f=f=
|
||||
if :; then echo $*; fi; f\=f\= $*
|
||||
}; f\=f $*
|
||||
); f= f\= f= f=
|
||||
|
||||
# Parens are not escaped, hence this is invalid variable assignment.
|
||||
f=f()
|
||||
{
|
||||
f=f=()
|
||||
(
|
||||
f=f=f()
|
||||
if :; then :; fi
|
||||
)
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user