runtime/syntax/sh.vim

   1 " Vim syntax file
   2 " Language:             shell (sh) Korn shell (ksh) bash (sh)
   3 " Maintainer:           Dr. Charles E. Campbell, Jr.  <NdrOchipS@PcampbellAfamily.Mbiz>
   4 " Previous Maintainer:  Lennart Schultz <Lennart.Schultz@ecmwf.int>
   5 " Last Change:          Apr 24, 2008
   6 " Version:              90
   7 " URL:          http://mysite.verizon.net/astronaut/vim/index.html#vimlinks_syntax
   8 "
   9 " Using the following VIM variables: {{{1
  10 " g:is_bash             if none of the previous three variables are
  11 "               defined, then if g:is_bash is set enhance with
  12 "               bash syntax highlighting
  13 " g:is_kornshell        if neither b:is_kornshell or b:is_bash is
  14 "               defined, then if g:is_kornshell is set
  15 "               enhance with kornshell/POSIX syntax highlighting
  16 " g:is_posix                    this variable is the same as g:is_kornshell
  17 " g:sh_fold_enabled     if non-zero, syntax folding is enabled
  18 " g:sh_minlines         sets up syn sync minlines (dflt: 200)
  19 " g:sh_maxlines         sets up syn sync maxlines (dflt: 2x sh_minlines)
  20 "
  21 " This file includes many ideas from Éric Brunet (eric.brunet@ens.fr)
  22
  23 " For version 5.x: Clear all syntax items {{{1
  24 " For version 6.x: Quit when a syntax file was already loaded
  25 if version < 600
  26   syntax clear
  27 elseif exists("b:current_syntax")
  28   finish
  29 endif
  30
  31 " handling /bin/sh with is_kornshell/is_sh {{{1
  32 " b:is_sh is set when "#! /bin/sh" is found;
  33 " However, it often is just a masquerade by bash (typically Linux)
  34 " or kornshell (typically workstations with Posix "sh").
  35 " So, when the user sets "is_bash" or "is_kornshell",
  36 " a b:is_sh is converted into b:is_bash/b:is_kornshell,
  37 " respectively.
  38 if !exists("b:is_kornshell") && !exists("b:is_bash")
  39   if exists("g:is_posix") && !exists("g:is_kornshell")
  40    let g:is_kornshell= g:is_posix
  41   endif
  42   if exists("g:is_kornshell")
  43     let b:is_kornshell= 1
  44     if exists("b:is_sh")
  45       unlet b:is_sh
  46     endif
  47   elseif exists("g:is_bash")
  48     let b:is_bash= 1
  49     if exists("b:is_sh")
  50       unlet b:is_sh
  51     endif
  52   else
  53     let b:is_sh= 1
  54   endif
  55 endif
  56
  57 " set up default g:sh_fold_enabled {{{1
  58 if !exists("g:sh_fold_enabled")
  59  let g:sh_fold_enabled= 0
  60 elseif g:sh_fold_enabled != 0 && !has("folding")
  61  let g:sh_fold_enabled= 0
  62  echomsg "Ignoring g:sh_fold_enabled=".g:sh_fold_enabled."; need to re-compile vim for +fold support"
  63 endif
  64 if g:sh_fold_enabled && &fdm == "manual"
  65  set fdm=syntax
  66 endif
  67
  68 " sh syntax is case sensitive {{{1
  69 syn case match
  70
  71 " Clusters: contains=@... clusters {{{1
  72 "==================================
  73 syn cluster shCaseEsacList      contains=shCaseStart,shCase,shCaseBar,shCaseIn,shComment,shDeref,shDerefSimple,shCaseCommandSub,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote,shCtrlSeq
  74 syn cluster shCaseList  contains=@shCommandSubList,shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shSetList,shSource,shStatement,shVariable,shCtrlSeq
  75 syn cluster shColonList contains=@shCaseList
  76 syn cluster shCommandSubList    contains=shArithmetic,shDeref,shDerefSimple,shNumber,shOperator,shPosnParm,shExSingleQuote,shSingleQuote,shDoubleQuote,shStatement,shVariable,shSubSh,shAlias,shTest,shCtrlSeq
  77 syn cluster shCurlyList contains=shNumber,shComma,shDeref,shDerefSimple,shDerefSpecial
  78 syn cluster shDblQuoteList      contains=shCommandSub,shDeref,shDerefSimple,shPosnParm,shExSingleQuote,shCtrlSeq,shSpecial
  79 syn cluster shDerefList contains=shDeref,shDerefSimple,shDerefVar,shDerefSpecial,shDerefWordError,shDerefPPS
  80 syn cluster shDerefVarList      contains=shDerefOp,shDerefVarArray,shDerefOpError
  81 syn cluster shEchoList  contains=shArithmetic,shCommandSub,shDeref,shDerefSimple,shExpr,shExSingleQuote,shSingleQuote,shDoubleQuote,shCtrlSeq
  82 syn cluster shExprList1 contains=shCharClass,shNumber,shOperator,shExSingleQuote,shSingleQuote,shDoubleQuote,shExpr,shDblBrace,shDeref,shDerefSimple,shCtrlSeq
  83 syn cluster shExprList2 contains=@shExprList1,@shCaseList,shTest
  84 syn cluster shFunctionList      contains=@shCommandSubList,shCaseEsac,shColon,shCommandSub,shCommandSub,shComment,shDo,shEcho,shExpr,shFor,shHereDoc,shIf,shRedir,shSetList,shSource,shStatement,shVariable,shOperator,shFunctionStart,shCtrlSeq
  85 if exists("b:is_kornshell") || exists("b:is_bash")
  86  syn cluster shFunctionList     add=shDblBrace,shDblParen
  87 endif
  88 syn cluster shHereBeginList     contains=@shCommandSubList
  89 syn cluster shHereList  contains=shBeginHere,shHerePayload
  90 syn cluster shHereListDQ        contains=shBeginHere,@shDblQuoteList,shHerePayload
  91 syn cluster shIdList    contains=shCommandSub,shWrapLineOperator,shIdWhiteSpace,shDeref,shDerefSimple,shRedir,shExSingleQuote,shSingleQuote,shDoubleQuote,shExpr,shCtrlSeq
  92 syn cluster shLoopList  contains=@shCaseList,shTestOpr,shExpr,shDblBrace,shConditional,shCaseEsac,shTest
  93 syn cluster shSubShList contains=@shCaseList,shOperator
  94 syn cluster shTestList  contains=shCharClass,shComment,shCommandSub,shDeref,shDerefSimple,shDoubleQuote,shExpr,shExpr,shNumber,shOperator,shExSingleQuote,shSingleQuote,shTestOpr,shTest,shCtrlSeq
  95
  96
  97 " Echo: {{{1
  98 " ====
  99 " This one is needed INSIDE a CommandSub, so that `echo bla` be correct
 100 syn region shEcho matchgroup=shStatement start="\<echo\>"  skip="\\$" matchgroup=shOperator end="$" matchgroup=NONE end="[<>;&|()]"me=e-1 end="\d[<>]"me=e-2 end="#"me=e-1 contains=@shEchoList
 101 syn region shEcho matchgroup=shStatement start="\<print\>" skip="\\$" matchgroup=shOperator end="$" matchgroup=NONE end="[<>;&|()]"me=e-1 end="\d[<>]"me=e-2 end="#"me=e-1 contains=@shEchoList
 102
 103 " This must be after the strings, so that bla \" be correct
 104 syn region shEmbeddedEcho contained matchgroup=shStatement start="\<print\>" skip="\\$" matchgroup=shOperator end="$" matchgroup=NONE end="[<>;&|`)]"me=e-1 end="\d[<>]"me=e-2 end="#"me=e-1 contains=shNumber,shExSingleQuote,shSingleQuote,shDeref,shDerefSimple,shSpecialVar,shOperator,shDoubleQuote,shCharClass,shCtrlSeq
 105
 106 " Alias: {{{1
 107 " =====
 108 if exists("b:is_kornshell") || exists("b:is_bash")
 109  syn match shStatement "\<alias\>"
 110  syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\w\+\)\@=" skip="\\$" end="\>\|`"
 111  syn region shAlias matchgroup=shStatement start="\<alias\>\s\+\(\w\+=\)\@=" skip="\\$" end="="
 112 endif
 113
 114 " Error Codes: {{{1
 115 " ============
 116 syn match   shDoError "\<done\>"
 117 syn match   shIfError "\<fi\>"
 118 syn match   shInError "\<in\>"
 119 syn match   shCaseError ";;"
 120 syn match   shEsacError "\<esac\>"
 121 syn match   shCurlyError "}"
 122 syn match   shParenError ")"
 123 if exists("b:is_kornshell")
 124  syn match     shDTestError "]]"
 125 endif
 126 syn match     shTestError "]"
 127
 128 " Options Interceptor: {{{1
 129 " ====================
 130 syn match   shOption  "\s[\-+][a-zA-Z0-9]\+\>"ms=s+1
 131 syn match   shOption  "\s--[^ \t$`'"|]\+"ms=s+1
 132
 133 " File Redirection Highlighted As Operators: {{{1
 134 "===========================================
 135 syn match      shRedir  "\d\=>\(&[-0-9]\)\="
 136 syn match      shRedir  "\d\=>>-\="
 137 syn match      shRedir  "\d\=<\(&[-0-9]\)\="
 138 syn match      shRedir  "\d<<-\="
 139
 140 " Operators: {{{1
 141 " ==========
 142 syn match   shOperator  "<<\|>>"                contained
 143 syn match   shOperator  "[!&;|]"
 144 syn match   shOperator  "\[[[^:]\|\]]"
 145 syn match   shOperator  "!\=="          skipwhite nextgroup=shPattern
 146 syn match   shPattern   "\<\S\+\())\)\@="       contained contains=shExSingleQuote,shSingleQuote,shDoubleQuote,shDeref
 147
 148 " Subshells: {{{1
 149 " ==========
 150 syn region shExpr  transparent matchgroup=shExprRegion  start="{" end="}"       contains=@shExprList2
 151 syn region shSubSh transparent matchgroup=shSubShRegion start="(" end=")"       contains=@shSubShList
 152
 153 " Tests: {{{1
 154 "=======
 155 "syn region  shExpr transparent matchgroup=shRange start="\[" skip=+\\\\\|\\$+ end="\]" contains=@shTestList
 156 syn region shExpr       matchgroup=shRange start="\[" skip=+\\\\\|\\$+ end="\]" contains=@shTestList
 157 syn region shTest       transparent matchgroup=shStatement start="\<test\>" skip=+\\\\\|\\$+ matchgroup=NONE end="[;&|]"me=e-1 end="$" contains=@shExprList1
 158 syn match  shTestOpr    contained       "<=\|>=\|!=\|==\|-.\>\|-\(nt\|ot\|ef\|eq\|ne\|lt\|le\|gt\|ge\)\>\|[!<>]"
 159 syn match  shTestOpr    contained       '=' skipwhite nextgroup=shTestDoubleQuote,shTestSingleQuote,shTestPattern
 160 syn match  shTestPattern        contained       '\w\+'
 161 syn match  shTestDoubleQuote    contained       '"[^"]*"'
 162 syn match  shTestSingleQuote    contained       '\\.'
 163 syn match  shTestSingleQuote    contained       "'[^']*'"
 164 if exists("b:is_kornshell") || exists("b:is_bash")
 165  syn region  shDblBrace matchgroup=Delimiter start="\[\[" skip=+\\\\\|\\$+ end="\]\]"   contains=@shTestList
 166  syn region  shDblParen matchgroup=Delimiter start="((" skip=+\\\\\|\\$+ end="))"       contains=@shTestList
 167 endif
 168
 169 " Character Class In Range: {{{1
 170 " =========================
 171 syn match   shCharClass contained       "\[:\(backspace\|escape\|return\|xdigit\|alnum\|alpha\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|tab\):\]"
 172
 173 " Loops: do, if, while, until {{{1
 174 " ======
 175 if g:sh_fold_enabled
 176  syn region shDo        fold transparent matchgroup=shConditional start="\<do\>" matchgroup=shConditional end="\<done\>" contains=@shLoopList
 177  syn region shIf        fold transparent matchgroup=shConditional start="\<if\>" matchgroup=shConditional end="\<;\_s*then\>" end="\<fi\>"   contains=@shLoopList,shDblBrace,shDblParen,shFunctionKey
 178  syn region shFor       fold matchgroup=shLoop start="\<for\>" end="\<in\>" end="\<do\>"me=e-2  contains=@shLoopList,shDblParen skipwhite nextgroup=shCurlyIn
 179 else
 180  syn region shDo        transparent matchgroup=shConditional start="\<do\>" matchgroup=shConditional end="\<done\>" contains=@shLoopList
 181  syn region shIf        transparent matchgroup=shConditional start="\<if\>" matchgroup=shConditional end="\<;\_s*then\>" end="\<fi\>"   contains=@shLoopList,shDblBrace,shDblParen,shFunctionKey
 182  syn region shFor       matchgroup=shLoop start="\<for\>" end="\<in\>" end="\<do\>"me=e-2       contains=@shLoopList,shDblParen skipwhite nextgroup=shCurlyIn
 183 endif
 184 if exists("b:is_kornshell") || exists("b:is_bash")
 185  syn cluster shCaseList add=shRepeat
 186  syn region shRepeat   matchgroup=shLoop   start="\<while\>" end="\<in\>" end="\<do\>"me=e-2    contains=@shLoopList,shDblParen,shDblBrace
 187  syn region shRepeat   matchgroup=shLoop   start="\<until\>" end="\<in\>" end="\<do\>"me=e-2    contains=@shLoopList,shDblParen,shDblBrace
 188  syn region shCaseEsac matchgroup=shConditional start="\<select\>" matchgroup=shConditional end="\<in\>" end="\<do\>" contains=@shLoopList
 189 else
 190  syn region shRepeat   matchgroup=shLoop   start="\<while\>" end="\<do\>"me=e-2         contains=@shLoopList
 191  syn region shRepeat   matchgroup=shLoop   start="\<until\>" end="\<do\>"me=e-2         contains=@shLoopList
 192 endif
 193 syn region shCurlyIn   contained        matchgroup=Delimiter start="{" end="}" contains=@shCurlyList
 194 syn match  shComma     contained        ","
 195
 196 " Case: case...esac {{{1
 197 " ====
 198 syn match   shCaseBar   contained skipwhite "[^|"`'()]\{-}|"hs=e                nextgroup=shCase,shCaseStart,shCaseBar,shComment,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote
 199 syn match   shCaseStart contained skipwhite skipnl "("                  nextgroup=shCase,shCaseBar
 200 syn region  shCase      contained skipwhite skipnl matchgroup=shSnglCase start="\([^#$()'" \t]\|\\.\)\{-})"ms=s,hs=e  end=";;" end="esac"me=s-1 contains=@shCaseList nextgroup=shCaseStart,shCase,shComment
 201 if g:sh_fold_enabled
 202  syn region  shCaseEsac fold matchgroup=shConditional start="\<case\>" end="\<esac\>"   contains=@shCaseEsacList
 203 else
 204  syn region  shCaseEsac matchgroup=shConditional start="\<case\>" end="\<esac\>"        contains=@shCaseEsacList
 205 endif
 206 syn keyword shCaseIn    contained skipwhite skipnl in                   nextgroup=shCase,shCaseStart,shCaseBar,shComment,shCaseExSingleQuote,shCaseSingleQuote,shCaseDoubleQuote
 207 if exists("b:is_bash")
 208  syn region  shCaseExSingleQuote        matchgroup=shOperator start=+\$'+ skip=+\\\\\|\\.+ end=+'+      contains=shStringSpecial,shSpecial      skipwhite skipnl nextgroup=shCaseBar    contained
 209  syn region  shCaseExDoubleQuote        matchgroup=shOperator start=+\$"+ skip=+\\\\\|\\.+ end=+"+      contains=shStringSpecial,shSpecial,shCommandSub,shDeref skipwhite skipnl nextgroup=shCaseBar    contained
 210 else
 211  syn region  shCaseExSingleQuote        matchgroup=Error start=+\$'+ skip=+\\\\\|\\.+ end=+'+   contains=shStringSpecial        skipwhite skipnl nextgroup=shCaseBar    contained
 212 endif
 213 syn region  shCaseSingleQuote   matchgroup=shOperator start=+'+ end=+'+         contains=shStringSpecial                skipwhite skipnl nextgroup=shCaseBar    contained
 214 syn region  shCaseDoubleQuote   matchgroup=shOperator start=+"+ skip=+\\\\\|\\.+ end=+"+        contains=@shDblQuoteList,shStringSpecial        skipwhite skipnl nextgroup=shCaseBar    contained
 215 syn region  shCaseCommandSub    start=+`+ skip=+\\\\\|\\.+ end=+`+              contains=@shCommandSubList              skipwhite skipnl nextgroup=shCaseBar    contained
 216
 217 " Misc: {{{1
 218 "======
 219 syn match   shWrapLineOperator "\\$"
 220 syn region  shCommandSub   start="`" skip="\\\\\|\\." end="`" contains=@shCommandSubList
 221
 222 " $() and $(()): {{{1
 223 " $(..) is not supported by sh (Bourne shell).  However, apparently
 224 " some systems (HP?) have as their /bin/sh a (link to) Korn shell
 225 " (ie. Posix compliant shell).  /bin/ksh should work for those
 226 " systems too, however, so the following syntax will flag $(..) as
 227 " an Error under /bin/sh.  By consensus of vimdev'ers!
 228 if exists("b:is_kornshell") || exists("b:is_bash")
 229  syn region shCommandSub matchgroup=shCmdSubRegion start="\$("  skip='\\\\\|\\.' end=")"  contains=@shCommandSubList
 230  syn region shArithmetic matchgroup=shArithRegion  start="\$((" skip='\\\\\|\\.' end="))" contains=@shCommandSubList
 231  syn match  shSkipInitWS contained      "^\s\+"
 232 else
 233  syn region shCommandSub matchgroup=Error start="\$(" end=")" contains=@shCommandSubList
 234 endif
 235
 236 if exists("b:is_bash")
 237  syn cluster shCommandSubList add=bashSpecialVariables,bashStatement
 238  syn cluster shCaseList add=bashAdminStatement,bashStatement
 239  syn keyword bashSpecialVariables contained BASH BASH_ENV BASH_VERSINFO BASH_VERSION CDPATH DIRSTACK EUID FCEDIT FIGNORE GLOBIGNORE GROUPS HISTCMD HISTCONTROL HISTFILE HISTFILESIZE HISTIGNORE HISTSIZE HOME HOSTFILE HOSTNAME HOSTTYPE IFS IGNOREEOF INPUTRC LANG LC_ALL LC_COLLATE LC_MESSAGES LINENO MACHTYPE MAIL MAILCHECK MAILPATH OLDPWD OPTARG OPTERR OPTIND OSTYPE PATH PIPESTATUS PPID PROMPT_COMMAND PS1 PS2 PS3 PS4 PWD RANDOM REPLY SECONDS SHELLOPTS SHLVL TIMEFORMAT TIMEOUT UID auto_resume histchars
 240  syn keyword bashStatement chmod clear complete du egrep expr fgrep find gnufind gnugrep grep install less ls mkdir mv rm rmdir rpm sed sleep sort strip tail touch
 241  syn keyword bashAdminStatement daemon killall killproc nice reload restart start status stop
 242 endif
 243
 244 if exists("b:is_kornshell")
 245  syn cluster shCommandSubList add=kshSpecialVariables,kshStatement
 246  syn cluster shCaseList add=kshStatement
 247  syn keyword kshSpecialVariables contained CDPATH COLUMNS EDITOR ENV ERRNO FCEDIT FPATH HISTFILE HISTSIZE HOME IFS LINENO LINES MAIL MAILCHECK MAILPATH OLDPWD OPTARG OPTIND PATH PPID PS1 PS2 PS3 PS4 PWD RANDOM REPLY SECONDS SHELL TMOUT VISUAL
 248  syn keyword kshStatement cat chmod clear cp du egrep expr fgrep find grep install killall less ls mkdir mv nice printenv rm rmdir sed sort strip stty tail touch tput
 249 endif
 250
 251 syn match   shSource    "^\.\s"
 252 syn match   shSource    "\s\.\s"
 253 syn region  shColon     start="^\s*:" end="$\|" end="#"me=e-1 contains=@shColonList
 254
 255 " String And Character Constants: {{{1
 256 "================================
 257 syn match   shNumber    "-\=\<\d\+\>#\="
 258 syn match   shCtrlSeq   "\\\d\d\d\|\\[abcfnrtv0]"               contained
 259 if exists("b:is_bash")
 260  syn match   shSpecial  "\\\o\o\o\|\\x\x\x\|\\c.\|\\[abefnrtv]" contained
 261 endif
 262 if exists("b:is_bash")
 263  syn region  shExSingleQuote    matchgroup=shOperator start=+\$'+ skip=+\\\\\|\\.+ end=+'+      contains=shStringSpecial,shSpecial
 264  syn region  shExDoubleQuote    matchgroup=shOperator start=+\$"+ skip=+\\\\\|\\.+ end=+"+      contains=shStringSpecial,shSpecial,shCommandSub,shDeref
 265 else
 266  syn region  shExSingleQuote    matchGroup=Error start=+\$'+ skip=+\\\\\|\\.+ end=+'+   contains=shStringSpecial
 267 endif
 268 syn region  shSingleQuote       matchgroup=shOperator start=+'+ end=+'+         contains=shStringSpecial,@Spell
 269 syn region  shDoubleQuote       matchgroup=shOperator start=+"+ skip=+\\"+ end=+"+      contains=@shDblQuoteList,shStringSpecial,@Spell
 270 syn match   shStringSpecial     "[^[:print:]]"  contained
 271 syn match   shStringSpecial     "\%(\\\\\)*\\[\\"'`$()#]"
 272 syn match   shSpecial   "[^\\]\zs\%(\\\\\)*\\[\\"'`$()#]"
 273 syn match   shSpecial   "^\%(\\\\\)*\\[\\"'`$()#]"
 274
 275 " Comments: {{{1
 276 "==========
 277 syn cluster    shCommentGroup   contains=shTodo,@Spell
 278 syn keyword    shTodo   contained       COMBAK FIXME TODO XXX
 279 syn match      shComment        "^\s*\zs#.*$"   contains=@shCommentGroup
 280 syn match      shComment        "#.*$"  contains=@shCommentGroup
 281
 282 " Here Documents: {{{1
 283 " =========================================
 284 if version < 600
 285  syn region shHereDoc matchgroup=shRedir start="<<\s*\**END[a-zA-Z_0-9]*\**"  matchgroup=shRedir end="^END[a-zA-Z_0-9]*$" contains=@shDblQuoteList
 286  syn region shHereDoc matchgroup=shRedir start="<<-\s*\**END[a-zA-Z_0-9]*\**" matchgroup=shRedir end="^\s*END[a-zA-Z_0-9]*$" contains=@shDblQuoteList
 287  syn region shHereDoc matchgroup=shRedir start="<<\s*\**EOF\**" matchgroup=shRedir      end="^EOF$"     contains=@shDblQuoteList
 288  syn region shHereDoc matchgroup=shRedir start="<<-\s*\**EOF\**" matchgroup=shRedir     end="^\s*EOF$"  contains=@shDblQuoteList
 289  syn region shHereDoc matchgroup=shRedir start="<<\s*\**\.\**"  matchgroup=shRedir      end="^\.$"      contains=@shDblQuoteList
 290  syn region shHereDoc matchgroup=shRedir start="<<-\s*\**\.\**" matchgroup=shRedir      end="^\s*\.$"   contains=@shDblQuoteList
 291
 292 elseif g:sh_fold_enabled
 293  syn region shHereDoc matchgroup=shRedir fold start="<<\s*\z(\S*\)"             matchgroup=shRedir end="^\z1\s*$"       contains=@shDblQuoteList
 294  syn region shHereDoc matchgroup=shRedir fold start="<<\s*\"\z(\S*\)\""         matchgroup=shRedir end="^\z1\s*$"
 295  syn region shHereDoc matchgroup=shRedir fold start="<<\s*'\z(\S*\)'"           matchgroup=shRedir end="^\z1\s*$"
 296  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*\z(\S*\)"            matchgroup=shRedir end="^\s*\z1\s*$"    contains=@shDblQuoteList
 297  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*\"\z(\S*\)\""                matchgroup=shRedir end="^\s*\z1\s*$"
 298  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*'\z(\S*\)'"          matchgroup=shRedir end="^\s*\z1\s*$"
 299  syn region shHereDoc matchgroup=shRedir fold start="<<\s*\\\_$\_s*\z(\S*\)"            matchgroup=shRedir end="^\z1\s*$"
 300  syn region shHereDoc matchgroup=shRedir fold start="<<\s*\\\_$\_s*\"\z(\S*\)\""        matchgroup=shRedir end="^\z1\s*$"
 301  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*\\\_$\_s*'\z(\S*\)'"         matchgroup=shRedir end="^\s*\z1\s*$"
 302  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*\\\_$\_s*\z(\S*\)"           matchgroup=shRedir end="^\s*\z1\s*$"
 303  syn region shHereDoc matchgroup=shRedir fold start="<<-\s*\\\_$\_s*\"\z(\S*\)\""       matchgroup=shRedir end="^\s*\z1\s*$"
 304  syn region shHereDoc matchgroup=shRedir fold start="<<\s*\\\_$\_s*'\z(\S*\)'"          matchgroup=shRedir end="^\z1\s*$"
 305  syn region shHereDoc matchgroup=shRedir fold start="<<\\\z(\S*\)"              matchgroup=shRedir end="^\z1\s*$"
 306
 307 else
 308  syn region shHereDoc matchgroup=shRedir start="<<\s*\\\=\z(\S*\)"      matchgroup=shRedir end="^\z1\s*$"    contains=@shDblQuoteList
 309  syn region shHereDoc matchgroup=shRedir start="<<\s*\"\z(\S*\)\""      matchgroup=shRedir end="^\z1\s*$"
 310  syn region shHereDoc matchgroup=shRedir start="<<-\s*\z(\S*\)"         matchgroup=shRedir end="^\s*\z1\s*$" contains=@shDblQuoteList
 311  syn region shHereDoc matchgroup=shRedir start="<<-\s*'\z(\S*\)'"       matchgroup=shRedir end="^\s*\z1\s*$"
 312  syn region shHereDoc matchgroup=shRedir start="<<\s*'\z(\S*\)'"        matchgroup=shRedir end="^\z1\s*$"
 313  syn region shHereDoc matchgroup=shRedir start="<<-\s*\"\z(\S*\)\""     matchgroup=shRedir end="^\s*\z1\s*$"
 314  syn region shHereDoc matchgroup=shRedir start="<<\s*\\\_$\_s*\z(\S*\)" matchgroup=shRedir end="^\z1\s*$"
 315  syn region shHereDoc matchgroup=shRedir start="<<-\s*\\\_$\_s*\z(\S*\)"        matchgroup=shRedir end="^\s*\z1\s*$"
 316  syn region shHereDoc matchgroup=shRedir start="<<-\s*\\\_$\_s*'\z(\S*\)'"      matchgroup=shRedir end="^\s*\z1\s*$"
 317  syn region shHereDoc matchgroup=shRedir start="<<\s*\\\_$\_s*'\z(\S*\)'"       matchgroup=shRedir end="^\z1\s*$"
 318  syn region shHereDoc matchgroup=shRedir start="<<\s*\\\_$\_s*\"\z(\S*\)\""     matchgroup=shRedir end="^\z1\s*$"
 319  syn region shHereDoc matchgroup=shRedir start="<<-\s*\\\_$\_s*\"\z(\S*\)\""    matchgroup=shRedir end="^\s*\z1\s*$"
 320  syn region shHereDoc matchgroup=shRedir start="<<\\\z(\S*\)"           matchgroup=shRedir end="^\z1\s*$"
 321 endif
 322
 323 " Here Strings: {{{1
 324 " =============
 325 if exists("b:is_bash")
 326  syn match shRedir "<<<"
 327 endif
 328
 329 " Identifiers: {{{1
 330 "=============
 331 syn match  shVariable "\<\([bwglsav]:\)\=[a-zA-Z0-9.!@_%+,]*\ze="       nextgroup=shSetIdentifier
 332 syn match  shIdWhiteSpace  contained    "\s"
 333 syn match  shSetIdentifier contained    "="     nextgroup=shPattern,shDeref,shDerefSimple,shDoubleQuote,shSingleQuote,shExSingleQuote
 334 if exists("b:is_bash")
 335   syn region shSetList matchgroup=shSet start="\<\(declare\|typeset\|local\|export\|unset\)\>\ze[^/]" end="$"   matchgroup=shOperator end="\ze[|);&]"me=e-1 matchgroup=NONE end="#\|="me=e-1 contains=@shIdList
 336   syn region shSetList matchgroup=shSet start="\<set\>[^/]"me=e-1 end="$" end="\\ze[|)]"                matchgroup=shOperator end="\ze[|);&]"me=e-1 matchgroup=NONE end="[#=]"me=e-1 contains=@shIdList
 337   syn match  shSet "\<\(declare\|typeset\|local\|export\|set\|unset\)\>"
 338 elseif exists("b:is_kornshell")
 339   syn region shSetList matchgroup=shSet start="\<\(typeset\|export\|unset\)\>\ze[^/]" end="$"           matchgroup=shOperator end="\ze[|);&]"me=e-1 matchgroup=NONE end="[#=]"me=e-1 contains=@shIdList
 340   syn region shSetList matchgroup=shSet start="\<set\>\ze[^/]" end="$\|\ze[})]"                 matchgroup=shOperator end="\ze[|);&]"me=e-1 matchgroup=NONE end="[#=]"me=e-1 contains=@shIdList
 341   syn match  shSet "\<\(typeset\|set\|export\|unset\)\>"
 342 else
 343   syn region shSetList matchgroup=shSet start="\<\(set\|export\|unset\)\>\ze[^/]" end="$\|\ze[|)]"      matchgroup=shOperator end="\ze[|);&]" matchgroup=NONE end="[#=]"me=e-1 contains=@shIdList
 344   syn match  shStatement "\<\(set\|export\|unset\)\>"
 345 endif
 346
 347 " Functions: {{{1
 348 syn keyword shFunctionKey function      skipwhite skipnl nextgroup=shFunctionTwo
 349 " COMBAK -- look at bash09.  function foo() (line#35) is folding 38 lines.  Not being terminated properly
 350 "syn match   shFunctionStart    "{"     contained
 351 if g:sh_fold_enabled
 352  syn region shFunctionOne transparent fold      start="^\s*\h\w*\s*()\_s*\ze{"    matchgroup=shFunctionStart end="}"    contains=@shFunctionList                        skipwhite skipnl nextgroup=shFunctionStart
 353  syn region shFunctionTwo transparent fold      start="\h\w*\s*\%(()\)\=\_s*\ze{" matchgroup=shFunctionStart end="}"    contains=shFunctionKey,@shFunctionList contained        skipwhite skipnl nextgroup=shFunctionStart
 354 else
 355  syn region shFunctionOne transparent   start="^\s*\h\w*\s*()\_s*\ze{"    matchgroup=shFunctionStart end="}"    contains=@shFunctionList
 356  syn region shFunctionTwo transparent   start="\h\w*\s*\%(()\)\=\_s*\ze{" matchgroup=shFunctionStart end="}"    contains=shFunctionKey,@shFunctionList contained
 357 endif
 358
 359 " Parameter Dereferencing: {{{1
 360 " ========================
 361 syn match  shDerefSimple        "\$\%(\h\w*\|\d\)"
 362 syn region shDeref      matchgroup=PreProc start="\${" end="}"  contains=@shDerefList,shDerefVarArray
 363 syn match  shDerefWordError     "[^}$[]"        contained
 364 syn match  shDerefSimple        "\$[-#*@!?]"
 365 syn match  shDerefSimple        "\$\$"
 366 if exists("b:is_bash") || exists("b:is_kornshell")
 367  syn region shDeref     matchgroup=PreProc start="\${##\=" end="}"      contains=@shDerefList
 368 endif
 369
 370 " bash: ${!prefix*} and ${#parameter}: {{{1
 371 " ====================================
 372 if exists("b:is_bash")
 373  syn region shDeref     matchgroup=PreProc start="\${!" end="\*\=}"     contains=@shDerefList,shDerefOp
 374  syn match  shDerefVar  contained       "{\@<=!\w\+"            nextgroup=@shDerefVarList
 375 endif
 376
 377 syn match  shDerefSpecial       contained       "{\@<=[-*@?0]"          nextgroup=shDerefOp,shDerefOpError
 378 syn match  shDerefSpecial       contained       "\({[#!]\)\@<=[[:alnum:]*@_]\+" nextgroup=@shDerefVarList,shDerefOp
 379 syn match  shDerefVar   contained       "{\@<=\w\+"             nextgroup=@shDerefVarList
 380
 381 " sh ksh bash : ${var[... ]...}  array reference: {{{1
 382 syn region  shDerefVarArray   contained matchgroup=shDeref start="\[" end="]"   contains=@shCommandSubList nextgroup=shDerefOp,shDerefOpError
 383
 384 " Special ${parameter OPERATOR word} handling: {{{1
 385 " sh ksh bash : ${parameter:-word}    word is default value
 386 " sh ksh bash : ${parameter:=word}    assign word as default value
 387 " sh ksh bash : ${parameter:?word}    display word if parameter is null
 388 " sh ksh bash : ${parameter:+word}    use word if parameter is not null, otherwise nothing
 389 "    ksh bash : ${parameter#pattern}  remove small left  pattern
 390 "    ksh bash : ${parameter##pattern} remove large left  pattern
 391 "    ksh bash : ${parameter%pattern}  remove small right pattern
 392 "    ksh bash : ${parameter%%pattern} remove large right pattern
 393 syn cluster shDerefPatternList  contains=shDerefPattern,shDerefString
 394 syn match shDerefOpError        contained       ":[[:punct:]]"
 395 syn match  shDerefOp    contained       ":\=[-=?]"      nextgroup=@shDerefPatternList
 396 syn match  shDerefOp    contained       ":\=+"  nextgroup=@shDerefPatternList
 397 if exists("b:is_bash") || exists("b:is_kornshell")
 398  syn match  shDerefOp   contained       "#\{1,2}"       nextgroup=@shDerefPatternList
 399  syn match  shDerefOp   contained       "%\{1,2}"       nextgroup=@shDerefPatternList
 400  syn match  shDerefPattern      contained       "[^{}]\+"       contains=shDeref,shDerefSimple,shDerefPattern,shDerefString,shCommandSub,shDerefEscape nextgroup=shDerefPattern
 401  syn region shDerefPattern      contained       start="{" end="}"       contains=shDeref,shDerefSimple,shDerefString,shCommandSub nextgroup=shDerefPattern
 402  syn match  shDerefEscape       contained       '\%(\\\\\)*\\.'
 403 endif
 404 syn region shDerefString        contained       matchgroup=shOperator start=+'+ end=+'+         contains=shStringSpecial
 405 syn region shDerefString        contained       matchgroup=shOperator start=+"+ skip=+\\"+ end=+"+      contains=@shDblQuoteList,shStringSpecial
 406 syn match  shDerefString        contained       "\\["']"
 407
 408 if exists("b:is_bash")
 409  " bash : ${parameter:offset}
 410  " bash : ${parameter:offset:length}
 411  syn region shDerefOp   contained       start=":[$[:alnum:]_]"me=e-1 end=":"me=e-1 end="}"me=e-1 contains=@shCommandSubList nextgroup=shDerefPOL
 412  syn match  shDerefPOL  contained       ":[^}]\+"       contains=@shCommandSubList
 413
 414  " bash : ${parameter//pattern/string}
 415  " bash : ${parameter//pattern}
 416  syn match  shDerefPPS  contained       '/\{1,2}'       nextgroup=shDerefPPSleft
 417  syn region shDerefPPSleft      contained       start='.'       skip=@\%(\\\)\/@ matchgroup=shDerefOp end='/' end='\ze}' nextgroup=shDerefPPSright contains=@shCommandSubList
 418  syn region shDerefPPSright     contained       start='.'       end='\ze}'      contains=@shCommandSubList
 419 endif
 420
 421 " Useful sh Keywords: {{{1
 422 " ===================
 423 syn keyword shStatement break cd chdir continue eval exec exit kill newgrp pwd read readonly return shift test trap ulimit umask wait
 424 syn keyword shConditional contained elif else then
 425 syn keyword shCondError elif else then
 426
 427 " Useful ksh Keywords: {{{1
 428 " ====================
 429 if exists("b:is_kornshell") || exists("b:is_bash")
 430  syn keyword shStatement autoload bg false fc fg functions getopts hash history integer jobs let nohup print printf r stop suspend time times true type unalias whence
 431
 432 " Useful bash Keywords: {{{1
 433 " =====================
 434  if exists("b:is_bash")
 435   syn keyword shStatement bind builtin dirs disown enable help local logout popd pushd shopt source
 436  else
 437   syn keyword shStatement login newgrp
 438  endif
 439 endif
 440
 441 " Synchronization: {{{1
 442 " ================
 443 if !exists("sh_minlines")
 444   let sh_minlines = 200
 445 endif
 446 if !exists("sh_maxlines")
 447   let sh_maxlines = 2 * sh_minlines
 448 endif
 449 exec "syn sync minlines=" . sh_minlines . " maxlines=" . sh_maxlines
 450 syn sync match shCaseEsacSync   grouphere       shCaseEsac      "\<case\>"
 451 syn sync match shCaseEsacSync   groupthere      shCaseEsac      "\<esac\>"
 452 syn sync match shDoSync grouphere       shDo    "\<do\>"
 453 syn sync match shDoSync groupthere      shDo    "\<done\>"
 454 syn sync match shForSync        grouphere       shFor   "\<for\>"
 455 syn sync match shForSync        groupthere      shFor   "\<in\>"
 456 syn sync match shIfSync grouphere       shIf    "\<if\>"
 457 syn sync match shIfSync groupthere      shIf    "\<fi\>"
 458 syn sync match shUntilSync      grouphere       shRepeat        "\<until\>"
 459 syn sync match shWhileSync      grouphere       shRepeat        "\<while\>"
 460
 461 " Default Highlighting: {{{1
 462 " =====================
 463 hi def link shArithRegion       shShellVariables
 464 hi def link shBeginHere shRedir
 465 hi def link shCaseBar   shConditional
 466 hi def link shCaseCommandSub    shCommandSub
 467 hi def link shCaseDoubleQuote   shDoubleQuote
 468 hi def link shCaseIn    shConditional
 469 hi def link shCaseSingleQuote   shSingleQuote
 470 hi def link shCaseDoubleQuote   shSingleQuote
 471 hi def link shCaseStart shConditional
 472 hi def link shCmdSubRegion      shShellVariables
 473 hi def link shColon     shStatement
 474 hi def link shDerefOp   shOperator
 475 hi def link shDerefPOL  shDerefOp
 476 hi def link shDerefPPS  shDerefOp
 477 hi def link shDeref     shShellVariables
 478 hi def link shDerefSimple       shDeref
 479 hi def link shDerefSpecial      shDeref
 480 hi def link shDerefString       shDoubleQuote
 481 hi def link shDerefVar  shDeref
 482 hi def link shDoubleQuote       shString
 483 hi def link shEcho      shString
 484 hi def link shEmbeddedEcho      shString
 485 hi def link shExSingleQuote     shSingleQuote
 486 hi def link shExDoubleQuote     shSingleQuote
 487 hi def link shFunctionStart     Delimiter
 488 hi def link shHereDoc   shString
 489 hi def link shHerePayload       shHereDoc
 490 hi def link shLoop      shStatement
 491 hi def link shOption    shCommandSub
 492 hi def link shPattern   shString
 493 hi def link shPosnParm  shShellVariables
 494 hi def link shRange     shOperator
 495 hi def link shRedir     shOperator
 496 hi def link shSingleQuote       shString
 497 hi def link shSource    shOperator
 498 hi def link shStringSpecial     shSpecial
 499 hi def link shSubShRegion       shOperator
 500 hi def link shTestOpr   shConditional
 501 hi def link shTestPattern       shString
 502 hi def link shTestDoubleQuote   shString
 503 hi def link shTestSingleQuote   shString
 504 hi def link shVariable  shSetList
 505 hi def link shWrapLineOperator  shOperator
 506
 507 if exists("b:is_bash")
 508   hi def link bashAdminStatement        shStatement
 509   hi def link bashSpecialVariables      shShellVariables
 510   hi def link bashStatement             shStatement
 511   hi def link shFunctionParen           Delimiter
 512   hi def link shFunctionDelim           Delimiter
 513 endif
 514 if exists("b:is_kornshell")
 515   hi def link kshSpecialVariables       shShellVariables
 516   hi def link kshStatement              shStatement
 517   hi def link shFunctionParen           Delimiter
 518 endif
 519
 520 hi def link shCaseError         Error
 521 hi def link shCondError         Error
 522 hi def link shCurlyError                Error
 523 hi def link shDerefError                Error
 524 hi def link shDerefOpError              Error
 525 hi def link shDerefWordError            Error
 526 hi def link shDoError           Error
 527 hi def link shEsacError         Error
 528 hi def link shIfError           Error
 529 hi def link shInError           Error
 530 hi def link shParenError                Error
 531 hi def link shTestError         Error
 532 if exists("b:is_kornshell")
 533   hi def link shDTestError              Error
 534 endif
 535
 536 hi def link shArithmetic                Special
 537 hi def link shCharClass         Identifier
 538 hi def link shSnglCase          Statement
 539 hi def link shCommandSub                Special
 540 hi def link shComment           Comment
 541 hi def link shConditional               Conditional
 542 hi def link shCtrlSeq           Special
 543 hi def link shExprRegion                Delimiter
 544 hi def link shFunctionKey               Function
 545 hi def link shFunctionName              Function
 546 hi def link shNumber            Number
 547 hi def link shOperator          Operator
 548 hi def link shRepeat            Repeat
 549 hi def link shSet               Statement
 550 hi def link shSetList           Identifier
 551 hi def link shShellVariables            PreProc
 552 hi def link shSpecial           Special
 553 hi def link shStatement         Statement
 554 hi def link shString            String
 555 hi def link shTodo              Todo
 556 hi def link shAlias             Identifier
 557
 558 " Set Current Syntax: {{{1
 559 " ===================
 560 if exists("b:is_bash")
 561  let b:current_syntax = "bash"
 562 elseif exists("b:is_kornshell")
 563  let b:current_syntax = "ksh"
 564 else
 565  let b:current_syntax = "sh"
 566 endif
 567
 568 " vim: ts=16 fdm=marker