Hi,
I've noted a number of issues with the bourne shell syntax highlighting,
and have finally got around to coding a patch to fix them.
1. "while" highlighting broken after function definitions:
> foo() { }; while true; do :; done
2. "while" highlighting whole predicate unnecessarily:
> while pgrep vim; do :; done
3. Marking escaped quotes as errors after parameter dereference
operators:
> echo ${foo+\"yes\"}
> echo ${foo+\'yes\'}
4. Escaping close parens broken in case matches:
> case x in \));; esac
5. Escaping quotes broken in lots of places:
echo \"hello\"
echo \'hello\'
echo \`hello\`
My motivation - and primary testcase - has been GNU Libtool
(/usr/bin/libtool), which has over 7500 lines of fairly complex sh
constructs. With the attached patch it seems to get highlighted quite
well.
Ed Catmur
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--- vim71/runtime/syntax/sh.vim 2007/10/20 19:35:31 1.1
+++ vim71/runtime/syntax/sh.vim 2007/10/20 21:46:17
@@ -71,7 +71,7 @@ syn case match
" Clusters: [EMAIL PROTECTED] clusters {{{1
"==================================
syn cluster shCaseEsacList contains=shCaseStart,shCase,shCaseBar,shCaseIn,shComment,shDeref,shDerefSimple,shCaseCommandSub,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote,shCtrlSeq
-syn cluster shCaseList [EMAIL PROTECTED],shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq
+syn cluster shCaseList [EMAIL PROTECTED],shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shRepeat,shSetList,shSource,shStatement,shVariable,shCtrlSeq
syn cluster shColonList [EMAIL PROTECTED]
syn cluster shCommandSubList contains=shArithmetic,shDeref,shDerefSimple,shNumber,shOperator,shPosnParm,shExSingleQuote,shSingleQuote,shDoubleQuote,shStatement,shVariable,shSubSh,shAlias,shTest,shCtrlSeq
syn cluster shCurlyList contains=shNumber,shComma,shDeref,shDerefSimple,shDerefSpecial
@@ -81,7 +81,7 @@ syn cluster shDerefVarList contains=shDe
syn cluster shEchoList contains=shArithmetic,shCommandSub,shDeref,shDerefSimple,shExpr,shExSingleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq
syn cluster shExprList1 contains=shCharClass,shNumber,shOperator,shExSingleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
syn cluster shExprList2 [EMAIL PROTECTED],@shCaseList,shTest
-syn cluster shFunctionList [EMAIL PROTECTED],shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shFunctionStart,shCtrlSeq
+syn cluster shFunctionList [EMAIL PROTECTED],shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shRepeat,shSetList,shSource,shStatement,shVariable,shOperator,shFunctionStart,shCtrlSeq
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster shFunctionList add=shDblBrace,shDblParen
endif
@@ -182,7 +182,6 @@ else
syn region shFor matchgroup=shLoop start="\<for\>" end="\<in\>" end="\<do\>"me=e-2 [EMAIL PROTECTED],shDblParen skipwhite nextgroup=shCurlyIn
endif
if exists("b:is_kornshell") || exists("b:is_bash")
- syn cluster shCaseList add=shRepeat
syn region shRepeat matchgroup=shLoop start="\<while\>" end="\<in\>" end="\<do\>"me=e-2 [EMAIL PROTECTED],shDblParen,shDblBrace
syn region shRepeat matchgroup=shLoop start="\<until\>" end="\<in\>" end="\<do\>"me=e-2 [EMAIL PROTECTED],shDblParen,shDblBrace
syn region shCaseEsac matchgroup=shConditional start="\<select\>" matchgroup=shConditional end="\<in\>" end="\<do\>" [EMAIL PROTECTED]
@@ -195,9 +194,9 @@ syn match shComma contained ","
" Case: case...esac {{{1
" ====
-syn match shCaseBar contained skipwhite "[^|"`'()]\{-}|"hs=e nextgroup=shCase,shCaseStart,shCaseBar,shComment,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote
+syn match shCaseBar contained skipwhite "\([^|"`'()\\]\|\\.\)\{-}|"hs=e nextgroup=shCase,shCaseStart,shCaseBar,shComment,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote
syn match shCaseStart contained skipwhite skipnl "(" nextgroup=shCase,shCaseBar
-syn region shCase contained skipwhite skipnl matchgroup=shSnglCase start="\([^#$()'" \t]\|\\.\)\{-})"ms=s,hs=e end=";;" end="esac"me=s-1 [EMAIL PROTECTED] nextgroup=shCaseStart,shCase,shComment
+syn region shCase contained skipwhite skipnl matchgroup=shSnglCase start="\([^#$()'" \t\\]\|\\.\)\{-})"ms=s,hs=e end=";;" end="esac"me=s-1 [EMAIL PROTECTED] nextgroup=shCaseStart,shCase,shComment
if g:sh_fold_enabled
syn region shCaseEsac fold matchgroup=shConditional start="\<case\>" end="\<esac\>" [EMAIL PROTECTED]
else
@@ -209,14 +208,14 @@ if exists("b:is_bash")
else
syn region shCaseExSingleQuote matchgroup=Error start=+\$'+ skip=+\\\\\|\\.+ end=+'+ contains=shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
endif
-syn region shCaseSingleQuote matchgroup=shOperator start=+'+ end=+'+ contains=shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
-syn region shCaseDoubleQuote matchgroup=shOperator start=+"+ skip=+\\\\\|\\.+ end=+"+ [EMAIL PROTECTED],shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
-syn region shCaseCommandSub start=+`+ skip=+\\\\\|\\.+ end=+`+ [EMAIL PROTECTED] skipwhite skipnl nextgroup=shCaseBar contained
+syn region shCaseSingleQuote matchgroup=shOperator start=+\\\@<!'+ end=+'+ contains=shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
+syn region shCaseDoubleQuote matchgroup=shOperator start=+\\\@<!"+ skip=+\\\\\|\\.+ end=+"+ [EMAIL PROTECTED],shStringSpecial skipwhite skipnl nextgroup=shCaseBar contained
+syn region shCaseCommandSub start=+\\\@<!`+ skip=+\\\\\|\\.+ end=+`+ [EMAIL PROTECTED] skipwhite skipnl nextgroup=shCaseBar contained
" Misc: {{{1
"======
syn match shWrapLineOperator "\\$"
-syn region shCommandSub start="`" skip="\\\\\|\\." end="`" [EMAIL PROTECTED]
+syn region shCommandSub start="\\\@<!`" skip="\\\\\|\\." end="`" [EMAIL PROTECTED]
" $() and $(()): {{{1
" $(..) is not supported by sh (Bourne shell). However, apparently
@@ -247,7 +246,7 @@ if exists("b:is_bash")
syn match shSource "^\.\s"
syn match shSource "\s\.\s"
-syn region shColon start="^\s*:" end="$\|" end="#"me=e-1 [EMAIL PROTECTED]
+syn region shColon start="^\s*:" end="$\|" end="[^\\]#"me=e-1 [EMAIL PROTECTED]
" String And Character Constants: {{{1
"================================
@@ -263,8 +262,8 @@ if exists("b:is_bash")
else
syn region shExSingleQuote matchGroup=Error start=+\$'+ skip=+\\\\\|\\.+ end=+'+ contains=shStringSpecial
endif
-syn region shSingleQuote matchgroup=shOperator start=+'+ end=+'+ contains=shStringSpecial,@Spell
-syn region shDoubleQuote matchgroup=shOperator start=+"+ skip=+\\"+ end=+"+ [EMAIL PROTECTED],shStringSpecial,@Spell
+syn region shSingleQuote matchgroup=shOperator start=+\\\@<!'+ end=+'+ contains=shStringSpecial,@Spell
+syn region shDoubleQuote matchgroup=shOperator start=+\\\@<!"+ skip=+\\"+ end=+"+ [EMAIL PROTECTED],shStringSpecial,@Spell
syn match shStringSpecial "[^[:print:]]" contained
syn match shStringSpecial "\%(\\\\\)*\\[\\"'`$()#]"
syn match shSpecial "[^\\]\zs\%(\\\\\)*\\[\\"'`$()#]"
@@ -275,7 +274,7 @@ syn match shSpecial "^\%(\\\\\)*\\[\\"
syn cluster shCommentGroup contains=shTodo,@Spell
syn keyword shTodo contained COMBAK FIXME TODO XXX
syn match shComment "^\s*\zs#.*$" [EMAIL PROTECTED]
-syn match shComment "#.*$" [EMAIL PROTECTED]
+syn match shComment "\\\@<!#.*$" [EMAIL PROTECTED]
" Here Documents: {{{1
" =========================================
@@ -399,9 +398,8 @@ if exists("b:is_bash") || exists("b:is_k
syn region shDerefPattern contained start="{" end="}" contains=shDeref,shDerefSimple,shDerefString,shCommandSub nextgroup=shDerefPattern
syn match shDerefEscape contained '\%(\\\\\)*\\.'
endif
-syn region shDerefString contained matchgroup=shOperator start=+'+ end=+'+ contains=shStringSpecial
-syn region shDerefString contained matchgroup=shOperator start=+"+ skip=+\\"+ end=+"+ [EMAIL PROTECTED],shStringSpecial
-syn match shDerefString contained "\\["']"
+syn region shDerefString contained matchgroup=shOperator start=+\\\@<!'+ end=+'+ contains=shStringSpecial
+syn region shDerefString contained matchgroup=shOperator start=+\\\@<!"+ skip=+\\"+ end=+"+ [EMAIL PROTECTED],shStringSpecial
if exists("b:is_bash")
" bash : ${parameter:offset}
@@ -541,7 +539,6 @@ hi def link shFunctionKey Function
hi def link shFunctionName Function
hi def link shNumber Number
hi def link shOperator Operator
-hi def link shRepeat Repeat
hi def link shSet Statement
hi def link shSetList Identifier
hi def link shShellVariables PreProc
