vim-patch:48fa319: syntax(sh): Improve the recognition of bracket expressions

- Define a general non-"contained" "shBracketExpr" group,
  and replace with it the "contained" bracket variant of
  "shOperator", adjusting the patterns for the competing
  conditional commands "[" and "[[".
- Accommodate some unbalanced brackets (e.g. "[!][!]").
- Make the leading "!" (or "^") stand out in NON-matching
  bracket expressions.
- Support literal newlines in parametric patterns (along
  with pathname globbings and "case" patterns).
- Also match bracket expressions in:
  * parametric patterns (e.g. "${1#[ab]_}");
  * pathname globbings (e.g. "[ab]*.txt");
  * arguments for the "[[", "echo", and "print" commands.
- Recognise collating symbols (e.g. "[.a.]") and equivalence
  classes (e.g. "[=a=]").
- Recognise end patterns for a pattern substitution form of
  parameter expansion and match bracket expressions in such
  patterns (e.g. "${1/%[.!]/;}").

fixes vim/vim#15799
closes: vim/vim#15941

References:
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap09.html#tag_09_03_05
https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_14
https://git.savannah.gnu.org/gitweb/?p=bash.git;a=blob_plain;f=doc/bash.html;hb=37b7e91d64ad10b1a1815d12128c9475636df670
http://www.mirbsd.org/htman/i386/man1/mksh.htm

48fa3198b7

Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>
This commit is contained in:
Christian Clason 2024-12-30 11:28:25 +01:00 committed by Christian Clason
parent d077e31cc9
commit 259573db83

View File

@ -4,6 +4,7 @@
" Previous Maintainers: Charles E. Campbell
" Lennart Schultz <Lennart.Schultz@ecmwf.int>
" Last Change: 2024 Mar 04 by Vim Project
" 2024 Nov 03 by Aliaksei Budavei <0x000c70 AT gmail DOT com> (improved bracket expressions, #15941)
" Version: 208
" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
" For options and settings, please use: :help ft-sh-syntax
@ -127,6 +128,50 @@ else
com! -nargs=* ShFoldIfDoFor <args>
endif
" Generate bracket expression items {{{1
" =================================
" Note that the following function can be invoked as many times as necessary
" provided that these constraints hold for the passed dictionary argument:
" - every time a unique group-name value is assigned to the "itemGroup" key;
" - only ONCE either the "extraArgs" key is not entered or it is entered and
" its value does not have "contained" among other optional arguments (":help
" :syn-arguments").
fun! s:GenerateBracketExpressionItems(dict) abort
let itemGroup = a:dict.itemGroup
let bracketGroup = a:dict.bracketGroup
let invGroup = itemGroup . 'Inv'
let skipLeftBracketGroup = itemGroup . 'SkipLeftBracket'
let skipRightBracketGroup = itemGroup . 'SkipRightBracket'
let extraArgs = has_key(a:dict, 'extraArgs') ? a:dict.extraArgs : ''
" Make the leading "[!^]" stand out in a NON-matching expression.
exec 'syn match ' . invGroup . ' contained "\[\@<=[!^]"'
" Set up indirections for unbalanced-bracket highlighting.
exec 'syn region ' . skipRightBracketGroup . ' contained matchgroup=' . bracketGroup . ' start="\[\%([!^]\=\\\=\]\)\@=" matchgroup=shCollSymb end="\[\.[^]]\{-}\][^]]\{-}\.\]" matchgroup=' . itemGroup . ' end="\]" contains=@shBracketExprList,shDoubleQuote,' . invGroup
exec 'syn region ' . skipLeftBracketGroup . ' contained matchgroup=' . bracketGroup . ' start="\[\%([!^]\=\\\=\]\)\@=" skip="[!^]\=\\\=\]\%(\[[^]]\+\]\|[^]]\)\{-}\%(\[[:.=]\@!\)\@=" matchgroup=' . itemGroup . ' end="\[[:.=]\@!" contains=@shBracketExprList,shDoubleQuote,' . invGroup
" Look for a general matching expression.
exec 'syn region ' . itemGroup . ' matchgroup=' . bracketGroup . ' start="\[\S\@=" end="\]" contains=@shBracketExprList,shDoubleQuote ' . extraArgs
" Look for a general NON-matching expression.
exec 'syn region ' . itemGroup . ' matchgroup=' . bracketGroup . ' start="\[[!^]\@=" end="\]" contains=@shBracketExprList,shDoubleQuote,' . invGroup . ' ' . extraArgs
" Accommodate unbalanced brackets in bracket expressions. The supported
" syntax for a plain "]" can be: "[]ws]" and "[^]ws]"; or, "[ws[.xs]ys.]zs]"
" and "[^ws[.xs]ys.]zs]"; see §9.3.5 RE Bracket Expression (in XBD).
exec 'syn region ' . itemGroup . ' matchgroup=NONE start="\[[!^]\=\\\=\]" matchgroup=' . bracketGroup . ' end="\]" contains=@shBracketExprList,shDoubleQuote,' . skipRightBracketGroup . ' ' . extraArgs
" Strive to handle "[]...[]" etc.
exec 'syn region ' . itemGroup . ' matchgroup=NONE start="\[[!^]\=\\\=\]\%(\[[^]]\+\]\|[^]]\)\{-}\[[:.=]\@!" matchgroup=' . bracketGroup . ' end="\]" contains=@shBracketExprList,shDoubleQuote,' . skipLeftBracketGroup . ' ' . extraArgs
if !exists("g:skip_sh_syntax_inits")
exec 'hi def link ' . skipLeftBracketGroup . ' ' . itemGroup
exec 'hi def link ' . skipRightBracketGroup . ' ' . itemGroup
exec 'hi def link ' . invGroup . ' Underlined'
endif
endfun
call s:GenerateBracketExpressionItems({'itemGroup': 'shBracketExpr', 'bracketGroup': 'shBracketExprDelim'})
" sh syntax is case sensitive {{{1
syn case match
@ -136,23 +181,24 @@ syn cluster shErrorList contains=shDoError,shIfError,shInError,shCaseError,shEsa
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster ErrorList add=shDTestError
endif
syn cluster shArithParenList contains=shArithmetic,shArithParen,shCaseEsac,shComment,shDeref,shDo,shDerefSimple,shEcho,shEscape,shNumber,shOperator,shPosnParm,shExSingleQuote,shExDoubleQuote,shHereString,shRedir,shSingleQuote,shDoubleQuote,shStatement,shVariable,shAlias,shTest,shCtrlSeq,shSpecial,shParen,bashSpecialVariables,bashStatement,shIf,shFor,shFunctionKey,shFunctionOne,shFunctionTwo
syn cluster shArithParenList contains=shArithmetic,shArithParen,shCaseEsac,shComment,shDeref,shDerefVarArray,shDo,shDerefSimple,shEcho,shEscape,shExpr,shNumber,shOperator,shPosnParm,shExSingleQuote,shExDoubleQuote,shHereString,shRedir,shSingleQuote,shDoubleQuote,shStatement,shVariable,shAlias,shTest,shCtrlSeq,shSpecial,shParen,bashSpecialVariables,bashStatement,shIf,shFor,shFunctionKey,shFunctionOne,shFunctionTwo
syn cluster shArithList contains=@shArithParenList,shParenError
syn cluster shBracketExprList contains=shCharClassOther,shCharClass,shCollSymb,shEqClass
syn cluster shCaseEsacList contains=shCaseStart,shCaseLabel,shCase,shCaseBar,shCaseIn,shComment,shDeref,shDerefSimple,shCaseCommandSub,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote,shCtrlSeq,@shErrorList,shStringSpecial,shCaseRange
syn cluster shCaseList contains=@shCommandSubList,shCaseEsac,shColon,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shComment,shDblBrace,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster shCaseList add=shForPP,shDblParen
endif
syn cluster shCommandSubList contains=shAlias,shArithmetic,shCmdParenRegion,shCommandSub,shComment,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shEcho,shEscape,shExDoubleQuote,shExpr,shExSingleQuote,shHereDoc,shNumber,shOperator,shOption,shPosnParm,shHereString,shRedir,shSingleQuote,shSpecial,shStatement,shSubSh,shTest,shVariable
syn cluster shCommandSubList contains=shAlias,shArithmetic,shBracketExpr,shCmdParenRegion,shCommandSub,shComment,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shEcho,shEscape,shExDoubleQuote,shExpr,shExSingleQuote,shHereDoc,shNumber,shOperator,shOption,shPosnParm,shHereString,shRedir,shSingleQuote,shSpecial,shStatement,shSubSh,shTest,shVariable
syn cluster shCurlyList contains=shNumber,shComma,shDeref,shDerefSimple,shDerefSpecial
" COMBAK: removing shEscape from shDblQuoteList fails ksh04:43 -- Jun 09, 2022: I don't see the problem with ksh04, so am reinstating shEscape
syn cluster shDblQuoteList contains=shArithmetic,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shDeref,shDerefSimple,shEscape,shPosnParm,shCtrlSeq,shSpecial,shSpecialDQ
syn cluster shDerefList contains=shDeref,shDerefSimple,shDerefVar,shDerefSpecial,shDerefWordError,shDerefPSR,shDerefPPS
syn cluster shDerefVarList contains=shDerefOffset,shDerefOp,shDerefVarArray,shDerefOpError
syn cluster shEchoList contains=shArithmetic,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shDeref,shDerefSimple,shEscape,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq,shEchoQuote
syn cluster shExprList1 contains=shCharClass,shNumber,shOperator,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
syn cluster shEchoList contains=shArithmetic,shBracketExpr,shCommandSub,shCommandSubBQ,shDerefVarArray,shSubshare,shValsub,shDeref,shDerefSimple,shEscape,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq,shEchoQuote
syn cluster shExprList1 contains=shBracketExpr,shNumber,shOperator,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
syn cluster shExprList2 contains=@shExprList1,@shCaseList,shTest
syn cluster shFunctionList contains=@shCommandSubList,shCaseEsac,shColon,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shOption,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shCtrlSeq
syn cluster shFunctionList contains=shBracketExpr,@shCommandSubList,shCaseEsac,shColon,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shOption,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shCtrlSeq
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster shFunctionList add=shRepeat,shDblBrace,shDblParen,shForPP
syn cluster shDerefList add=shCommandSubList,shEchoDeref
@ -160,16 +206,16 @@ endif
syn cluster shHereBeginList contains=@shCommandSubList
syn cluster shHereList contains=shBeginHere,shHerePayload
syn cluster shHereListDQ contains=shBeginHere,@shDblQuoteList,shHerePayload
syn cluster shIdList contains=shArithmetic,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shWrapLineOperator,shSetOption,shComment,shDeref,shDerefSimple,shHereString,shNumber,shOperator,shRedir,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shCtrlSeq,shStringSpecial,shAtExpr
syn cluster shIdList contains=shArithmetic,shCommandSub,shCommandSubBQ,shDerefVarArray,shSubshare,shValsub,shWrapLineOperator,shSetOption,shComment,shDeref,shDerefSimple,shHereString,shNumber,shOperator,shRedir,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shExpr,shCtrlSeq,shStringSpecial,shAtExpr
syn cluster shIfList contains=@shLoopList,shDblBrace,shDblParen,shFunctionKey,shFunctionOne,shFunctionTwo
syn cluster shLoopList contains=@shCaseList,@shErrorList,shCaseEsac,shConditional,shDblBrace,shExpr,shFor,shIf,shOption,shSet,shTest,shTestOpr,shTouch
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster shLoopList add=shForPP,shDblParen
endif
syn cluster shPPSLeftList contains=shAlias,shArithmetic,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
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
syn cluster shPPSRightList contains=shDeref,shDerefSimple,shEscape,shPosnParm
syn cluster shSubShList contains=@shCommandSubList,shCommandSubBQ,shSubshare,shValsub,shCaseEsac,shColon,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shIf,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq,shOperator
syn cluster shTestList contains=shArithmetic,shCharClass,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shSpecialDQ,shExDoubleQuote,shExpr,shExSingleQuote,shNumber,shOperator,shSingleQuote,shTest,shTestOpr
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
syn cluster shTestList contains=shArithmetic,shBracketExpr,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shCtrlSeq,shDeref,shDerefSimple,shDoubleQuote,shSpecialDQ,shExDoubleQuote,shExpr,shExSingleQuote,shNumber,shOperator,shSingleQuote,shTest,shTestOpr
syn cluster shNoZSList contains=shSpecialNoZS
syn cluster shForList contains=shTestOpr,shNumber,shDerefSimple,shDeref,shCommandSub,shCommandSubBQ,shSubshare,shValsub,shArithmetic
@ -190,7 +236,7 @@ endif
syn match shEchoQuote contained '\%(\\\\\)*\\["`'()]'
" This must be after the strings, so that ... \" will be correct
syn region shEmbeddedEcho contained matchgroup=shStatement start="\<print\>" skip="\\$" matchgroup=shEchoDelim end="$" matchgroup=NONE end="[<>;&|`)]"me=e-1 end="\d[<>]"me=e-2 end="\s#"me=e-2 contains=shNumber,shExSingleQuote,shSingleQuote,shDeref,shDerefSimple,shSpecialVar,shOperator,shExDoubleQuote,shDoubleQuote,shCharClass,shCtrlSeq
syn region shEmbeddedEcho contained matchgroup=shStatement start="\<print\>" skip="\\$" matchgroup=shEchoDelim end="$" matchgroup=NONE end="[<>;&|`)]"me=e-1 end="\d[<>]"me=e-2 end="\s#"me=e-2 contains=shBracketExpr,shNumber,shExSingleQuote,shSingleQuote,shDeref,shDerefSimple,shSpecialVar,shOperator,shExDoubleQuote,shDoubleQuote,shCtrlSeq
" Alias: {{{1
" =====
@ -240,7 +286,6 @@ syn match shRedir "\d<<-\="
" ==========
syn match shOperator "<<\|>>" contained
syn match shOperator "[!&;|]" contained
syn match shOperator "\[[[^:]\|\]]" contained
syn match shOperator "[-=/*+%]\==" skipwhite nextgroup=shPattern
syn match shPattern "\<\S\+\())\)\@=" contained contains=shExSingleQuote,shSingleQuote,shExDoubleQuote,shDoubleQuote,shDeref
@ -251,9 +296,9 @@ syn region shSubSh transparent matchgroup=shSubShRegion start="[^(]\zs(" end=")"
" Tests: {{{1
"=======
syn region shExpr matchgroup=shRange start="\[" skip=+\\\\\|\\$\|\[+ end="\]" contains=@shTestList,shSpecial
syn region shExpr matchgroup=shRange start="\[\s\@=" skip=+\\\\\|\\$\|\[+ end="\]" contains=@shTestList,shSpecial
syn region shTest transparent matchgroup=shStatement start="\<test\s" skip=+\\\\\|\\$+ matchgroup=NONE end="[;&|]"me=e-1 end="$" contains=@shExprList1
syn region shNoQuote start='\S' skip='\%(\\\\\)*\\.' end='\ze\s' end="\ze['"]" contained contains=shDerefSimple,shDeref
syn region shNoQuote start='\S' skip='\%(\\\\\)*\\.' end='\ze\s' end="\ze['"]" contained contains=shBracketExpr,shDerefSimple,shDeref
syn match shAstQuote contained '\*\ze"' nextgroup=shString
syn match shTestOpr contained '[^-+/%]\zs=' skipwhite nextgroup=shTestDoubleQuote,shTestSingleQuote,shTestPattern
syn match shTestOpr contained "<=\|>=\|!=\|==\|=\~\|-.\>\|-\(nt\|ot\|ef\|eq\|ne\|lt\|le\|gt\|ge\)\>\|[!<>]"
@ -262,13 +307,16 @@ syn region shTestDoubleQuote contained start='\%(\%(\\\\\)*\\\)\@<!"' skip=+\\\\
syn match shTestSingleQuote contained '\\.' nextgroup=shTestSingleQuote
syn match shTestSingleQuote contained "'[^']*'"
if exists("b:is_kornshell") || exists("b:is_bash")
syn region shDblBrace matchgroup=Delimiter start="\[\[" skip=+\%(\\\\\)*\\$+ end="\]\]" contains=@shTestList,shAstQuote,shNoQuote,shComment
syn region shDblBrace matchgroup=Delimiter start="\[\[\s\@=" skip=+\%(\\\\\)*\\$+ end="\]\]" contains=@shTestList,shAstQuote,shNoQuote,shComment
syn region shDblParen matchgroup=Delimiter start="((" skip=+\%(\\\\\)*\\$+ end="))" contains=@shTestList,shComment
endif
" Character Class In Range: {{{1
" =========================
syn match shCharClassOther contained "\[:\w\{-}:\]"
syn match shCharClass contained "\[:\(backspace\|escape\|return\|xdigit\|alnum\|alpha\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|tab\):\]"
syn match shCollSymb contained "\[\..\{-}\.\]"
syn match shEqClass contained "\[=.\{-}=\]"
" Loops: do, if, while, until {{{1
" ======
@ -298,7 +346,7 @@ syn match shComma contained ","
" ====
syn match shCaseBar contained skipwhite "\(^\|[^\\]\)\(\\\\\)*\zs|" nextgroup=shCase,shCaseStart,shCaseBar,shComment,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote
syn match shCaseStart contained skipwhite skipnl "(" nextgroup=shCase,shCaseBar
syn match shCaseLabel contained skipwhite "\%(\\.\|[-a-zA-Z0-9_*.]\)\+" contains=shCharClass
syn match shCaseLabel contained skipwhite "\%(\\.\|[-a-zA-Z0-9_*.]\)\+" contains=shBracketExpr
if exists("b:is_bash")
ShFoldIfDoFor syn region shCase contained skipwhite skipnl matchgroup=shSnglCase start="\%(\\.\|[^#$()'" \t]\)\{-}\zs)" end=";;" end=";&" end=";;&" end="esac"me=s-1 contains=@shCaseList nextgroup=shCaseStart,shCase,shComment
elseif exists("b:is_kornshell")
@ -317,11 +365,9 @@ endif
syn region shCaseSingleQuote matchgroup=shQuote start=+'+ end=+'+ contains=shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
syn region shCaseDoubleQuote matchgroup=shQuote start=+"+ skip=+\\\\\|\\.+ end=+"+ contains=@shDblQuoteList,shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
syn region shCaseCommandSub start=+`+ skip=+\\\\\|\\.+ end=+`+ contains=@shCommandSubList skipwhite skipnl nextgroup=shCaseBar contained
call s:GenerateBracketExpressionItems({'itemGroup': 'shCaseRange', 'bracketGroup': 'shBracketExprDelim', 'extraArgs': 'skip=+\\\\+ contained'})
if exists("b:is_bash")
syn region shCaseRange matchgroup=Delimiter start=+\[+ skip=+\\\\+ end=+\]+ contained contains=shCharClass
syn match shCharClass '\[:\%(alnum\|alpha\|ascii\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|word\|or\|xdigit\):\]' contained
else
syn region shCaseRange matchgroup=Delimiter start=+\[+ skip=+\\\\+ end=+\]+ contained
endif
" Misc: {{{1
"======
@ -453,7 +499,18 @@ endif
"=============
syn match shSetOption "\s\zs[-+][a-zA-Z0-9]\+\>" contained
syn match shVariable "\<\h\w*\ze=" nextgroup=shVarAssign
syn match shVarAssign "=" contained nextgroup=shCmdParenRegion,shPattern,shDeref,shDerefSimple,shDoubleQuote,shExDoubleQuote,shSingleQuote,shExSingleQuote,shVar
if exists("b:is_bash")
" The subscript form for array values, e.g. "foo=([2]=10 [4]=100)".
syn region shArrayValue contained start="\[\%(..\{-}\]=\)\@=" end="\]=\@=" contains=@shArrayValueList nextgroup=shVarAssign
syn cluster shArrayValueList contains=shArithmetic,shArithParen,shCommandSub,shDeref,shDerefSimple,shExpr,shNumber,shExSingleQuote,shExDoubleQuote,shSingleQuote,shDoubleQuote,shSpecial,shParen,bashSpecialVariables,shParenError
endif
if exists("b:is_bash") || exists("b:is_kornshell")
syn match shVariable "\<\h\w*\%(\[..\{-}\]\)\=\ze\%([|^&*/%+-]\|[<^]<\|[>^]>\)\==" contains=shDerefVarArray nextgroup=shVarAssign
syn match shVarAssign contained "\%([|^&*/%+-]\|[<^]<\|[>^]>\)\==" nextgroup=shArrayRegion,shPattern,shDeref,shDerefSimple,shDoubleQuote,shExDoubleQuote,shSingleQuote,shExSingleQuote,shVar
syn region shArrayRegion contained matchgroup=shShellVariables start="(" skip='\\\\\|\\.' end=")" contains=@shArrayValueList,shArrayValue,shComment
else
syn match shVarAssign contained "=" nextgroup=shPattern,shDeref,shDerefSimple,shDoubleQuote,shExDoubleQuote,shSingleQuote,shExSingleQuote,shVar
endif
syn match shVar contained "\h\w*"
syn region shAtExpr contained start="@(" end=")" contains=@shIdList
if exists("b:is_bash")
@ -571,8 +628,11 @@ syn match shDerefOp contained ":\=+" nextgroup=@shDerefPatternList
if exists("b:is_bash") || exists("b:is_kornshell") || exists("b:is_posix")
syn match shDerefOp contained "#\{1,2}" nextgroup=@shDerefPatternList
syn match shDerefOp contained "%\{1,2}" nextgroup=@shDerefPatternList
syn match shDerefPattern contained "[^{}]\+" contains=shDeref,shDerefSimple,shDerefPattern,shDerefString,shCommandSub,shDerefEscape nextgroup=shDerefPattern
syn match shDerefPattern contained "[^{}]\+" contains=shDeref,shDerefSimple,shDerefPattern,shDerefString,shCommandSub,shDerefEscape nextgroup=shDerefPattern skipnl
syn region shDerefPattern contained start="{" end="}" contains=shDeref,shDerefSimple,shDerefString,shCommandSub nextgroup=shDerefPattern
" Match parametric bracket expressions with a leading whitespace character.
syn region shDerefPattern contained matchgroup=shBracketExprDelim start="\[" end="\]" contains=@shBracketExprList,shDoubleQuote nextgroup=shDerefPattern
call s:GenerateBracketExpressionItems({'itemGroup': 'shDerefPattern', 'bracketGroup': 'shBracketExprDelim', 'extraArgs': 'contained nextgroup=shDerefPattern'})
syn match shDerefEscape contained '\%(\\\\\)*\\.'
endif
if exists("b:is_bash")
@ -592,15 +652,16 @@ if exists("b:is_bash") || exists("b:is_kornshell") || exists("b:is_posix")
endif
if exists("b:is_bash")
" bash : ${parameter/pattern/string}
" bash : ${parameter//pattern/string}
" bash : ${parameter//pattern}
syn match shDerefPPS contained '/\{1,2}' nextgroup=shDerefPPSleft
syn region shDerefPPSleft contained start='.' skip=@\%(\\\\\)*\\/@ matchgroup=shDerefOp end='/' end='\ze}' end='"' nextgroup=shDerefPPSright contains=@shPPSLeftList
syn region shDerefPPSright contained start='.' skip=@\%(\\\\\)\+@ end='\ze}' contains=@shPPSRightList
" bash : ${parameter/#substring/replacement}
syn match shDerefPSR contained '/#' nextgroup=shDerefPSRleft,shDoubleQuote,shSingleQuote
syn region shDerefPSRleft contained start='[^"']' skip=@\%(\\\\\)*\\/@ matchgroup=shDerefOp end='/' end='\ze}' nextgroup=shDerefPSRright
" bash : ${parameter/#pattern/string}
" bash : ${parameter/%pattern/string}
syn match shDerefPSR contained '/[#%]' nextgroup=shDerefPSRleft,shDoubleQuote,shSingleQuote
syn region shDerefPSRleft contained start='[^"']' skip=@\%(\\\\\)*\\/@ matchgroup=shDerefOp end='/' end='\ze}' nextgroup=shDerefPSRright contains=shBracketExpr
syn region shDerefPSRright contained start='.' skip=@\%(\\\\\)\+@ end='\ze}'
endif
@ -670,6 +731,7 @@ syn sync match shWhileSync grouphere shRepeat "\<while\>"
" =====================
if !exists("skip_sh_syntax_inits")
hi def link shArithRegion shShellVariables
hi def link shArrayValue shDeref
hi def link shAstQuote shDoubleQuote
hi def link shAtExpr shSetList
hi def link shBkslshSnglQuote shSingleQuote
@ -764,7 +826,10 @@ if !exists("skip_sh_syntax_inits")
endif
hi def link shArithmetic Special
hi def link shBracketExprDelim Delimiter
hi def link shCharClass Identifier
hi def link shCollSymb shCharClass
hi def link shEqClass shCharClass
hi def link shSnglCase Statement
hi def link shCommandSub Special
hi def link shCommandSubBQ shCommandSub
@ -814,6 +879,10 @@ delc ShFoldFunctions
delc ShFoldHereDoc
delc ShFoldIfDoFor
" Delete the bracket expression function {{{1
" ======================================
delfun s:GenerateBracketExpressionItems
" Set Current Syntax: {{{1
" ===================
if exists("b:is_bash")