runtime(sh): Improve the matching of function definitions
Commit:
https://github.com/vim/vim/commit/9c0d057e3d5a456b2f2879860e5e57bcdf130017
Author: Aliaksei Budavei <[email protected]>
Date: Tue Mar 24 20:34:15 2026 +0000
runtime(sh): Improve the matching of function definitions
- Drop the remaining undefined "shFunctionStart" references
(gone in v7.2b.000, c236c16d0).
- Revise nestable contexts where function definitions are
supported:
* Stop looking for function definitions in arithmetic
expressions.
* Recognise function definitions enclosing other function
definitions.
- In addition to grouping commands "{}" and "()", also match
other compound commands (e.g. "if"; see "shFunctionCmd*")
whenever these commands are supported as complete function
bodies.
- Balance body delimiters "(" and ")" for "shFunctionFour"
in Bash; match such function bodies whenever the use of
the function parameter list "()" token is optional, i.e.
when the "function" reserved word is present.
- Enable the use of "shFunctionFour" definitions.
- Do not claim optional leading whitespace characters before
a matched function definition.
- Prefer patterns with ASCII atoms (e.g. "\h") to equivalent
collections (e.g. "[A-Za-z_]") for speed.
- Accommodate word-boundary assertions in function name
patterns to names that may start and/or end with supported
non-word characters, e.g. "@test:".
- Match more valid function names in Bash: non-ASCII names,
non-word names.
- Allow for function names with "do", "done", etc. prefixes;
confine these name checks to "shDoError" and "shIfError".
fixes: #19619
related: #19638
References:
https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_09_04
https://gitweb.git.savannah.gnu.org/gitweb/?p=bash.git;a=blob_plain;f=doc/bash.html;hb=637f5c8696a6adc9b4519f1cd74aa78492266b7f
https://web.archive.org/web/20151105130220/http://www.research.att.com/sw/download/man/man1/ksh88.html
https://web.archive.org/web/20151025145158/http://www2.research.att.com/sw/download/man/man1/ksh.html
http://www.mirbsd.org/htman/i386/man1/mksh.htm
Co-authored-by: Johnothan King <[email protected]>
Co-authored-by: Doug Kearns <[email protected]>
Signed-off-by: Aliaksei Budavei <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>
diff --git a/runtime/syntax/sh.vim b/runtime/syntax/sh.vim
index 6b13ddacc..efe0b22c2 100644
--- a/runtime/syntax/sh.vim
+++ b/runtime/syntax/sh.vim
@@ -22,6 +22,7 @@
" 2026 Jan 15 highlight command switches that contain a digit
" 2026 Feb 11 improve support for KornShell function names and
variables
" 2026 Feb 15 improve comment handling #19414
+" 2026 Mar 23 improve matching of function definitions #19638
" }}}
" Version: 208
" Former URL: http://www.drchip.org/astronaut/vim/index.html#SYNTAX_SH
@@ -261,7 +262,7 @@ 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,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,shNamespaceOne
+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
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
@@ -278,7 +279,16 @@ syn cluster shDerefVarList
contains=shDerefOffset,shDerefOp,shDerefVarArray,shDe
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=shBracketExpr,@shCommandSubList,shCaseEsac,shColon,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shOption,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shCtrlSeq
+syn cluster shFunctionCmds
contains=shFor,shCaseEsac,shIf,shRepeat,shDblBrace,shDblParen
+if exists("b:is_ksh88") || exists("b:is_mksh")
+ " Offer "shFunctionCmds" as is.
+elseif exists("b:is_kornshell") || exists("b:is_bash")
+ syn cluster shFunctionCmds add=shForPP
+else
+ syn cluster shFunctionCmds remove=shDblBrace,shDblParen
+endif
+syn cluster shFunctionDefList
contains=shDoError,shIfError,shFunctionKey,shFunctionOne,shFunctionThree,shFunctionCmdOne
+syn cluster shFunctionList
contains=shBracketExpr,@shCommandSubList,shCaseEsac,shColon,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shOption,shHereString,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shCtrlSeq,@shFunctionDefList
if exists("b:is_kornshell") || exists("b:is_bash")
syn cluster shFunctionList add=shRepeat,shDblBrace,shDblParen,shForPP
syn cluster shDerefList add=shCommandSubList,shEchoDeref
@@ -287,7 +297,7 @@ 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,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,shNamespaceOne
+syn cluster shIfList
contains=@shLoopList,shDblBrace,shDblParen,@shFunctionDefList
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
@@ -647,39 +657,49 @@ endif
" Functions: {{{1
if !exists("b:is_posix")
- syn keyword shFunctionKey function skipwhite skipnl nextgroup=shFunctionTwo
+ syn keyword shFunctionKey function skipwhite skipnl
nextgroup=shDoError,shIfError,shFunctionTwo,shFunctionFour,shFunctionCmdTwo
endif
if exists("b:is_bash")
syn keyword shFunctionKey coproc
- ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*[A-Za-z_0-9:][-a-zA-Z_0-9:]*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_0-9:][-a-zA-Z_0-9:]*\>\s*\%(()\)\=\_s*{"
end="}" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*[A-Za-z_0-9:][-a-zA-Z_0-9:]*\s*()\_s*(" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_0-9:][-a-zA-Z_0-9:]*\>\s*\%(()\)\=\_s*)"
end=")" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
+ syn match shFunctionCmdOne "^\s*\zs\%(\<\k\+\|[^()<>|&$;
]\+\)\+\s*()\ze\_s*\%(\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)"
skipwhite skipnl nextgroup=@shFunctionCmds
+ syn match shFunctionCmdTwo "\%(\<\k\+\>\|[^()<>|&$;
]\+\)\+\ze\s*\%(()\ze\)\=\_s*\%(\<\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)"
contained skipwhite skipnl nextgroup=@shFunctionCmds
+ ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\zs\%(\<\k\+\|[^()<>|&$; ]\+\)\+\s*()\_s*{"
end="}" contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(\<\k\+\|[^()<>|&$; ]\+\)\+\s*\%(()\)\=\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\zs\%(\<\k\+\|[^()<>|&$; ]\+\)\+\s*()\_s*((\@!"
end=")" contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(\<\k\+\|[^()<>|&$; ]\+\)\+\s*\%(\%(()\)\=\)\@>\_s*((\@!"
end=")" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
elseif exists("b:is_ksh88")
" AT&T ksh88
- ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*[A-Za-z_][A-Za-z_0-9]*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_][A-Za-z_0-9]*\>\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*[A-Za-z_][A-Za-z_0-9]*\s*()\_s*(" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_][A-Za-z_0-9]*\>\_s*(" end=")"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
+ syn match shFunctionCmdOne
"^\s*\zs\h\w*\s*()\ze\_s*\%(\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)"
skipwhite skipnl nextgroup=@shFunctionCmds
+ ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\zs\h\w*\s*()\_s*{" end="}" contains=@shFunctionList
skipwhite skipnl nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\<\h\w*\>\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\zs\h\w*\s*()\_s*((\@!" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
elseif exists("b:is_mksh")
" MirBSD ksh is the wild west of absurd and abstruse function names...
- ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\s*()\_s*{"
end="}" contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(do\)\@!\&\<[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\>\s*\%(()\)\=\_s*{"
end="}" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\s*()\_s*("
end=")" contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(do\)\@!\&\<[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\>\s*\%(()\)\=\_s*("
end=")" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
+ syn match shFunctionCmdOne
"^\s*\zs[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\s*()\ze\_s*\%(\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)"
skipwhite skipnl nextgroup=@shFunctionCmds
+ ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\zs[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\s*()\_s*{"
end="}" contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%([@!+.%,:-]\+\|\<\w\+\)*[-A-Za-z_.%,0-9:]\s*\%(()\)\=\_s*{"
end="}" contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\zs[-A-Za-z_@!+.%,0-9:]*[-A-Za-z_.%,0-9:]\s*()\_s*((\@!"
end=")" contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
elseif exists("b:is_kornshell")
" ksh93
- ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*[A-Za-z_.][A-Za-z_.0-9]*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_.][A-Za-z_.0-9]*\>\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*[A-Za-z_.][A-Za-z_.0-9]*\s*()\_s*(" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(do\)\@!\&\<[A-Za-z_.][A-Za-z_.0-9]*\>\_s*(" end=")"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shNamespaceOne matchgroup=shFunction
start="\%(do\)\@!\&\<\h\w*\>\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
+ syn match shFunctionCmdOne
"^\s*\zs[A-Za-z_.][A-Za-z_.0-9]*\s*()\ze\_s*\%(\%(for\|case\|select\|if\|while\|until\)\>\|\[\[\s\|((\)"
skipwhite skipnl nextgroup=@shFunctionCmds
+ ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\zs[A-Za-z_.][A-Za-z_.0-9]*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(\.\|\<\h\+\)[A-Za-z_.0-9]*\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\zs[A-Za-z_.][A-Za-z_.0-9]*\s*()\_s*((\@!" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shNamespaceOne matchgroup=shFunction
start="\<\h\w*\>\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
else
- ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\h\w*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\%(do\)\@!\&\<\h\w*\>\s*\%(()\)\=\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\h\w*\s*()\_s*(" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
- ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\%(do\)\@!\&\<\h\w*\>\s*\%(()\)\=\_s*(" end=")"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shFunctionStart,shQuickComment
+ syn match shFunctionCmdOne
"^\s*\zs\h\w*\s*()\ze\_s*\%(for\|case\|if\|while\|until\)\>" skipwhite
skipnl nextgroup=@shFunctionCmds
+ syn match shFunctionCmdTwo
"\<\h\w*\s*()\ze\_s*\%(for\|case\|if\|while\|until\)\>" contained skipwhite
skipnl nextgroup=@shFunctionCmds
+ ShFoldFunctions syn region shFunctionOne matchgroup=shFunction
start="^\s*\zs\h\w*\s*()\_s*{" end="}"
contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionTwo matchgroup=shFunction
start="\<\h\w*\>\s*()\_s*{" end="}"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionThree matchgroup=shFunction
start="^\s*\zs\h\w*\s*()\_s*(" end=")"
contains=@shFunctionList skipwhite skipnl
nextgroup=shQuickComment
+ ShFoldFunctions syn region shFunctionFour matchgroup=shFunction
start="\<\h\w*\>\s*()\_s*(" end=")"
contains=shFunctionKey,@shFunctionList contained skipwhite skipnl
nextgroup=shQuickComment
+endif
+
+if !exists("g:sh_no_error")
+ syn match shDoError "\<do\%(ne\)\=\s*()"
+ syn match shIfError "\<then\s*()"
+ syn match shIfError "\<else\s*()"
endif
" Parameter Dereferencing: {{{1
@@ -883,6 +903,8 @@ if !exists("skip_sh_syntax_inits")
hi def link shEchoQuote shString
hi def link shForPP shLoop
hi def link shFunction Function
+ hi def link shFunctionCmdOne shFunction
+ hi def link shFunctionCmdTwo shFunction
hi def link shEmbeddedEcho shString
hi def link shEscape shCommandSub
hi def link shExDoubleQuote shDoubleQuote
diff --git a/runtime/syntax/testdir/dumps/sh_functions_bash_00.dump
b/runtime/syntax/testdir/dumps/sh_functions_bash_00.dump
new file mode 100644
index 000000000..704545095
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_bash_00.dump
@@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1>#+0&#ffffff0|!|/|b|i|n|/|b|a|s|h| +0#0000000&@61
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P|
|s|e|t|l|o|c|a|l| |f|e|n| |f|d|c|=|2| |f|d|l|=|8| |f|d|m|=|s|y|n|t|a|x|
+0#0000000&@20
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |l|e|t|
|g|:|s|h|_|f|o|l|d|_|e|n|a|b|l|e|d| |=| |1| |+| |2| |+| |4| +0#0000000&@22
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|t+0#af5f00255#ffffff0|y|p|e|s|e|t|
+0#0000000&|-+0#e000e06&|i| +0#0000000&|n+0#00e0e07&|=+0#0000000&|0+0#e000002&|
+0#0000000&@58
+| +0#0000e05#a8a8a8255@1|d+0#00e0e07#ffffff0|o@1|s|i|e|(|)|
+0#0000000&|(+0#e000e06&@1|n+0#0000000&|++0#af5f00255&|=|1+0#e000002&|)+0#e000e06&@1|;+0#0000000&|
|d|o@1|s|i|e| @47
+| +0#0000e05#a8a8a8255@1|d+0#00e0e07#ffffff0|o|n|e@1|(|)|
+0#0000000&|[+0#e000e06&@1| +0#0000000&|-+0#af5f00255&|n|
+0#0000000&|$+0#e000e06&|#| +0#0000000&|]+0#e000e06&@1|;+0#0000000&|
|d|o|n|e@1| @46
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|t+0#00e0e07#ffffff0|h|e|n|c|e|(|)| +0#0000000&@64
+| +0#0000e05#a8a8a8255@1|u+0#af5f00255#ffffff0|n|t|i|l| |:| +0#0000000&@65
+|-+0#0000e05#a8a8a8255| |d+0#af5f00255#ffffff0|o| +0#0000000&@70
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|:| @67
+||+0#0000e05#a8a8a8255| |d+0#af5f00255#ffffff0|o|n|e| +0#0000000&@68
+| +0#0000e05#a8a8a8255@1|t+0#0000000#ffffff0|h|e|n|c|e| @66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|w+0#00e0e07#ffffff0|h|i|l|e|s|(|)|
+0#0000000&|w+0#af5f00255&|h|i|l|e| |f|a|l|s|e|;| |d|o|
+0#0000000&|:|;+0#af5f00255&| +0#0000000&|d+0#af5f00255&|o|n|e|;+0#0000000&|
|w|h|i|l|e|s| @32
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |e+0#00e0e07#ffffff0|l|s|e|w|h|e|r|e|(|)|
+0#0000000&|i+0#af5f00255&|f| |:+0#0000000&| @56
+|i|s|_|b|a|s|h|:| |1|,| @45|1|,|1| @10|T|o|p|
diff --git a/runtime/syntax/testdir/dumps/sh_functions_bash_01.dump
b/runtime/syntax/testdir/dumps/sh_functions_bash_01.dump
new file mode 100644
index 000000000..a7ee351d9
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_bash_01.dump
@@ -0,0 +1,20 @@
+||+0#0000e05#a8a8a8255| |d+0#af5f00255#ffffff0|o|n|e| +0#0000000&@68
+| +0#0000e05#a8a8a8255@1|t+0#0000000#ffffff0|h|e|n|c|e| @66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|w+0#00e0e07#ffffff0|h|i|l|e|s|(|)|
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_bash_02.dump
b/runtime/syntax/testdir/dumps/sh_functions_bash_02.dump
new file mode 100644
index 000000000..fe4e93a88
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_bash_02.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_bash_03.dump
b/runtime/syntax/testdir/dumps/sh_functions_bash_03.dump
new file mode 100644
index 000000000..39a73d39c
--- /dev/null
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b/runtime/syntax/testdir/dumps/sh_functions_dash_00.dump
new file mode 100644
index 000000000..f4465f4ea
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_dash_01.dump
b/runtime/syntax/testdir/dumps/sh_functions_dash_01.dump
new file mode 100644
index 000000000..a0d7ba0e6
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_dash_01.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_dash_02.dump
b/runtime/syntax/testdir/dumps/sh_functions_dash_02.dump
new file mode 100644
index 000000000..4f928ffc0
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh2020_00.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_00.dump
new file mode 100644
index 000000000..8c4edd229
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_00.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh2020_01.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_01.dump
new file mode 100644
index 000000000..6e74c342d
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_01.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh2020_02.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_02.dump
new file mode 100644
index 000000000..add584189
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_02.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh2020_03.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_03.dump
new file mode 100644
index 000000000..75a4b5a02
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_ksh2020_03.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh88_00.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh88_00.dump
new file mode 100644
index 000000000..f4a6e0311
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_ksh88_00.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh88_01.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh88_01.dump
new file mode 100644
index 000000000..3426afb1a
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_ksh88_02.dump
b/runtime/syntax/testdir/dumps/sh_functions_ksh88_02.dump
new file mode 100644
index 000000000..967300cbb
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_mksh_00.dump
b/runtime/syntax/testdir/dumps/sh_functions_mksh_00.dump
new file mode 100644
index 000000000..ac300ee60
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_mksh_00.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_mksh_01.dump
b/runtime/syntax/testdir/dumps/sh_functions_mksh_01.dump
new file mode 100644
index 000000000..3426afb1a
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_mksh_01.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/sh_functions_mksh_02.dump
b/runtime/syntax/testdir/dumps/sh_functions_mksh_02.dump
new file mode 100644
index 000000000..a68196f10
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_functions_mksh_02.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/sh_generic_07.dump
b/runtime/syntax/testdir/dumps/sh_generic_07.dump
index 2df86f775..0d12eeedb 100644
--- a/runtime/syntax/testdir/dumps/sh_generic_07.dump
+++ b/runtime/syntax/testdir/dumps/sh_generic_07.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_ksh2020_07.dump
b/runtime/syntax/testdir/dumps/sh_ksh2020_07.dump
index e7b1f7c43..c2214f251 100644
--- a/runtime/syntax/testdir/dumps/sh_ksh2020_07.dump
+++ b/runtime/syntax/testdir/dumps/sh_ksh2020_07.dump
@@ -3,7 +3,7 @@
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diff --git a/runtime/syntax/testdir/dumps/sh_ksh88_07.dump
b/runtime/syntax/testdir/dumps/sh_ksh88_07.dump
index 9696c82b4..e7d559dac 100644
--- a/runtime/syntax/testdir/dumps/sh_ksh88_07.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_ksh93_generic_07.dump
b/runtime/syntax/testdir/dumps/sh_ksh93_generic_07.dump
index e7b1f7c43..c2214f251 100644
--- a/runtime/syntax/testdir/dumps/sh_ksh93_generic_07.dump
+++ b/runtime/syntax/testdir/dumps/sh_ksh93_generic_07.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_ksh93u_07.dump
b/runtime/syntax/testdir/dumps/sh_ksh93u_07.dump
index e7b1f7c43..c2214f251 100644
--- a/runtime/syntax/testdir/dumps/sh_ksh93u_07.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_ksh93v_07.dump
b/runtime/syntax/testdir/dumps/sh_ksh93v_07.dump
index e7b1f7c43..c2214f251 100644
--- a/runtime/syntax/testdir/dumps/sh_ksh93v_07.dump
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|#+0#0000e05&| |s|u|p@1|o|r|t|e|d| |b|y| |m|k|s|h|,| |n|o|t| |k|s|h|9|3|.|
+0#0000000&@43
|i+0#af5f00255&|f| |!| +0#0000000&|c+0#af5f00255&|o|m@1|a|n|d|
+0#0000000&|e+0#af5f00255&|v|a|l|
+0#0000000&|'+0#af5f00255&|(+0#e000002&@1|.|s|h|.|v|e|r|s|i|o|n| |>|=|
|2|0@1|7|0|7|0|3|)@1|'+0#af5f00255&|
+0#0000000&|2+0#e000002&|>+0#af5f00255&|/+0#0000000&|d|e|v|/|n|u|l@1|;+0#af5f00255&|
+0#0000000&|t+0#af5f00255&|h|e|n| +0#0000000&@9
-| +0#00e0e07&@7>v|a|l|s|u|b|f|u|n|c|(|)| |{| +0#0000000&@52
+@8>v+0#00e0e07&|a|l|s|u|b|f|u|n|c|(|)| |{| +0#0000000&@52
@16|R+0#e000e06&|E|P|L|Y|=+0#af5f00255&|$+0#e000e06&|1| +0#0000000&@50
@8|}+0#00e0e07&| +0#0000000&@65
@8|e+0#af5f00255&|c|h|o|
+0#e000002&|$+0#e000e06&|{||+0#ffffff16#ff404010|v|a|l|s|u|b|f|u|n|c|
|t|e|n|}+0#e000e06#ffffff0| +0#0000000&@43
diff --git a/runtime/syntax/testdir/dumps/sh_mksh_07.dump
b/runtime/syntax/testdir/dumps/sh_mksh_07.dump
index 2df86f775..0d12eeedb 100644
--- a/runtime/syntax/testdir/dumps/sh_mksh_07.dump
+++ b/runtime/syntax/testdir/dumps/sh_mksh_07.dump
@@ -3,7 +3,7 @@
|#+0#0000e05&| |V|a|l|u|e| |s|u|b|s|t|i|t|u|t|i|o|n|s| |o|f| |t|h|e| |f|o|r|m|
|$|{|||c|o|m@1|a|n|d|}| |a|r|e| |o|n|l|y| +0#0000000&@20
|#+0#0000e05&| |s|u|p@1|o|r|t|e|d| |b|y| |m|k|s|h|,| |n|o|t| |k|s|h|9|3|.|
+0#0000000&@43
|i+0#af5f00255&|f| |!| +0#0000000&|c+0#af5f00255&|o|m@1|a|n|d|
+0#0000000&|e+0#af5f00255&|v|a|l|
+0#0000000&|'+0#af5f00255&|(+0#e000002&@1|.|s|h|.|v|e|r|s|i|o|n| |>|=|
|2|0@1|7|0|7|0|3|)@1|'+0#af5f00255&|
+0#0000000&|2+0#e000002&|>+0#af5f00255&|/+0#0000000&|d|e|v|/|n|u|l@1|;+0#af5f00255&|
+0#0000000&|t+0#af5f00255&|h|e|n| +0#0000000&@9
-| +0#00e0e07&@7>v|a|l|s|u|b|f|u|n|c|(|)| |{| +0#0000000&@52
+@8>v+0#00e0e07&|a|l|s|u|b|f|u|n|c|(|)| |{| +0#0000000&@52
@16|R+0#e000e06&|E|P|L|Y|=+0#af5f00255&|$+0#e000e06&|1| +0#0000000&@50
@8|}+0#00e0e07&| +0#0000000&@65
@8|e+0#af5f00255&|c|h|o| +0#e000002&|$+0#e000e06&|{|||v|a|l|s|u|b|f|u|n|c|
|t|e|n|}| +0#0000000&@43
diff --git a/runtime/syntax/testdir/dumps/sh_mksh_10.dump
b/runtime/syntax/testdir/dumps/sh_mksh_10.dump
index 296f6a6e9..09847480a 100644
--- a/runtime/syntax/testdir/dumps/sh_mksh_10.dump
+++ b/runtime/syntax/testdir/dumps/sh_mksh_10.dump
@@ -3,9 +3,9 @@
@8|t+0#af5f00255&|r|u|e| +0#0000000&@62
|}+0#00e0e07&| +0#0000000&@73
@75
->f+0#00e0e07&|u|n|c|t|i|o|n|
+0#0000000&|.|s|h|.|t|i|l|d|e|.|s+0#af5f00255&|e|t| +0#00e0e07&|{+0#e000e06&|
+0#0000000&@50
-| +0#00e0e07&@7|f+0#af5f00255&|a|l|s|e| +0#0000000&@61
-|}+0#e000e06&| +0#0000000&@73
+>f+0#00e0e07&|u|n|c|t|i|o|n| +0#0000000&|.+0#00e0e07&|s|h|.|t|i|l|d|e|.|s|e|t|
|{| +0#0000000&@50
+@8|f+0#af5f00255&|a|l|s|e| +0#0000000&@61
+|}+0#00e0e07&| +0#0000000&@73
@75
|f+0#00e0e07&|u|n|c|t|i|o|n| +0#0000000&|f+0#00e0e07&|o@1|(|)| |{|
+0#0000000&@58
@8|:+0#0000e05&| +0#0000000&@1|#+0#0000e05&| |B|a|s|h|-|s|t|y|l|e|
|f|u|n|c|t|i|o|n| |(|m|k|s|h|-|o|n|l|y|)| +0#0000000&@30
diff --git a/runtime/syntax/testdir/input/sh_functions_bash.sh
b/runtime/syntax/testdir/input/sh_functions_bash.sh
new file mode 100644
index 000000000..161f14f97
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_functions_bash.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+# VIM_TEST_SETUP setlocal fen fdc=2 fdl=8 fdm=syntax
+# VIM_TEST_SETUP let g:sh_fold_enabled = 1 + 2 + 4
+
+
+typeset -i n=0
+doosie() ((n+=1)); doosie
+donee() [[ -n $# ]]; donee
+
+thence()
+until :
+do
+ :
+done
+thence
+
+whiles() while false; do :; done; whiles
+
+elsewhere() if :
+then :; fi; elsewhere
+
+selector() select x in 1 2; do
+ break
+done
+selector 0</dev/null 2>/dev/null || :
+
+cased() case "$#" in *) :;; esac; cased
+
+fore()
+for x in 1 2
+do
+ :
+done
+fore
+
+iffy() for ((;;))
+do
+ break
+done
+iffy
+
+if :; then
+ function !?#()
+ (
+ function @α! {
+ echo "$1"
+ }
+ @α! "$1"
+ )
+ eval !?\# "$1"
+fi
+
+namespace ()
+{ echo $#;
+}; namespace $@
diff --git a/runtime/syntax/testdir/input/sh_functions_dash.sh
b/runtime/syntax/testdir/input/sh_functions_dash.sh
new file mode 100644
index 000000000..15b133ab9
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_functions_dash.sh
@@ -0,0 +1,40 @@
+#!/bin/dash
+# VIM_TEST_SETUP setlocal fen fdc=2 fdl=8 fdm=syntax
+# VIM_TEST_SETUP let g:sh_fold_enabled = 1 + 2 + 4
+
+
+thence()
+until :
+do
+ :
+done
+thence
+
+whiles() while false; do :; done; whiles
+
+elsewhere() if :
+then :; fi; elsewhere
+
+cased() case "$#" in *) :;; esac; cased
+
+fore()
+for x in 1 2
+do
+ :
+done
+fore
+
+if :; then
+ id2()
+ (
+ id1() {
+ echo "$1"
+ }
+ id1 "$1"
+ )
+ id2 "$1"
+fi
+
+function ()
+{ echo $#;
+}; function $@
diff --git a/runtime/syntax/testdir/input/sh_functions_ksh2020.sh
b/runtime/syntax/testdir/input/sh_functions_ksh2020.sh
new file mode 100644
index 000000000..0a1b21ede
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_functions_ksh2020.sh
@@ -0,0 +1,51 @@
+#!/bin/ksh2020
+# VIM_TEST_SETUP setlocal fen fdc=2 fdl=8 fdm=syntax
+# VIM_TEST_SETUP let g:sh_fold_enabled = 1 + 2 + 4
+
+
+typeset -i 10 n=0
+doosie() ((n+=1)); doosie
+donee() [[ -n $# ]]; donee
+
+thence()
+until :
+do
+ :
+done
+thence
+
+whiles() while false; do :; done; whiles
+
+elsewhere() if :
+then :; fi; elsewhere
+
+selector() select x in 1 2; do
+ break
+done
+selector 0</dev/null 2>/dev/null || :
+
+cased() case "$#" in *) :;; esac; cased
+
+fore()
+for x in 1 2
+do
+ :
+done
+fore
+
+iffy() for ((;;))
+do
+ break
+done
+iffy
+
+if :; then
+ id_()
+ (
+ function n.set {
+ echo "$n"
+ }
+ doosie
+ )
+ id_ "$1"
+fi
diff --git a/runtime/syntax/testdir/input/sh_functions_ksh88.sh
b/runtime/syntax/testdir/input/sh_functions_ksh88.sh
new file mode 100644
index 000000000..d2eae00f8
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_functions_ksh88.sh
@@ -0,0 +1,45 @@
+#!/bin/ksh88
+# VIM_TEST_SETUP setlocal fen fdc=2 fdl=8 fdm=syntax
+# VIM_TEST_SETUP let g:sh_fold_enabled = 1 + 2 + 4
+
+
+typeset -i 10 n=0
+doosie() ((n+=1)); doosie
+donee() [[ -n $# ]]; donee
+
+thence()
+until :
+do
+ :
+done
+thence
+
+whiles() while false; do :; done; whiles
+
+elsewhere() if :
+then :; fi; elsewhere
+
+selector() select x in 1 2; do
+ break
+done
+selector 0</dev/null 2>/dev/null || :
+
+cased() case "$#" in *) :;; esac; cased
+
+fore()
+for x in 1 2
+do
+ :
+done
+fore
+
+if :; then
+ id2()
+ (
+ function id1 {
+ echo "$1"
+ }
+ id1 "$1"
+ )
+ id2 "$1"
+fi
diff --git a/runtime/syntax/testdir/input/sh_functions_mksh.sh
b/runtime/syntax/testdir/input/sh_functions_mksh.sh
new file mode 100644
index 000000000..04b56bb5a
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_functions_mksh.sh
@@ -0,0 +1,45 @@
+#!/bin/mksh
+# VIM_TEST_SETUP setlocal fen fdc=2 fdl=8 fdm=syntax
+# VIM_TEST_SETUP let g:sh_fold_enabled = 1 + 2 + 4
+
+
+typeset -i10 n=0
+doosie() ((n+=1)); doosie
+donee() [[ -n $# ]]; donee
+
+thence()
+until :
+do
+ :
+done
+thence
+
+whiles() while false; do :; done; whiles
+
+elsewhere() if :
+then :; fi; elsewhere
+
+selector() select x in 1 2; do
+ break
+done
+selector 0</dev/null 2>/dev/null || :
+
+cased() case "$#" in *) :;; esac; cased
+
+fore()
+for x in 1 2
+do
+ :
+done
+fore
+
+if :; then
+ %%%()
+ (
+ function @a:() {
+ echo "$1"
+ }
+ @a: "$1"
+ )
+ %%% "$1"
+fi
--
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