" Vim syntax file " Language: Ruby " Maintainer: Doug Kearns " URL: https://github.com/vim-ruby/vim-ruby " Release Coordinator: Doug Kearns " ---------------------------------------------------------------------------- " " Previous Maintainer: Mirko Nasato " Thanks to perl.vim authors, and to Reimer Behrends. :-) (MN) " ---------------------------------------------------------------------------- " Prelude {{{1 if exists("b:current_syntax") finish endif " this file uses line continuations let s:cpo_sav = &cpo set cpo&vim " Folding Config {{{1 if has("folding") && exists("ruby_fold") setlocal foldmethod=syntax endif let s:foldable_groups = split( \ get( \ b:, \ 'ruby_foldable_groups', \ get(g:, 'ruby_foldable_groups', 'ALL') \ ) \ ) function! s:foldable(...) abort if index(s:foldable_groups, 'ALL') > -1 return 1 endif for l:i in a:000 if index(s:foldable_groups, l:i) > -1 return 1 endif endfor return 0 endfunction " }}} syn cluster rubyNotTop contains=@rubyExtendedStringSpecial,@rubyRegexpSpecial,@rubyDeclaration,rubyConditional,rubyExceptional,rubyMethodExceptional,rubyTodo " Whitespace Errors {{{1 if exists("ruby_space_errors") if !exists("ruby_no_trail_space_error") syn match rubySpaceError display excludenl "\s\+$" endif if !exists("ruby_no_tab_space_error") syn match rubySpaceError display " \+\t"me=e-1 endif endif " Operators {{{1 if exists("ruby_operators") syn match rubyOperator "[~!^|*/%+-]\|&\.\@!\|\%(class\s*\)\@\|<=\|\%(<\|\>\|>=\|=\@1\|\*\*\|\.\.\.\|\.\.\|::" syn match rubyOperator "->\|-=\|/=\|\*\*=\|\*=\|&&=\|&=\|&&\|||=\||=\|||\|%=\|+=\|!\~\|!=" syn region rubyBracketOperator matchgroup=rubyOperator start="\%(\w[?!]\=\|[]})]\)\@2<=\[\s*" end="\s*]" contains=ALLBUT,@rubyNotTop endif " Expression Substitution and Backslash Notation {{{1 syn match rubyStringEscape "\\\\\|\\[abefnrstv]\|\\\o\{1,3}\|\\x\x\{1,2}" contained display syn match rubyStringEscape "\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=\S\)" contained display syn match rubyQuoteEscape "\\[\\']" contained display syn region rubyInterpolation matchgroup=rubyInterpolationDelimiter start="#{" end="}" contained contains=ALLBUT,@rubyNotTop syn match rubyInterpolation "#\%(\$\|@@\=\)\w\+" display contained contains=rubyInterpolationDelimiter,rubyInstanceVariable,rubyClassVariable,rubyGlobalVariable,rubyPredefinedVariable syn match rubyInterpolationDelimiter "#\ze\%(\$\|@@\=\)\w\+" display contained syn match rubyInterpolation "#\$\%(-\w\|\W\)" display contained contains=rubyInterpolationDelimiter,rubyPredefinedVariable,rubyInvalidVariable syn match rubyInterpolationDelimiter "#\ze\$\%(-\w\|\W\)" display contained syn region rubyNoInterpolation start="\\#{" end="}" contained syn match rubyNoInterpolation "\\#{" display contained syn match rubyNoInterpolation "\\#\%(\$\|@@\=\)\w\+" display contained syn match rubyNoInterpolation "\\#\$\W" display contained syn match rubyDelimiterEscape "\\[(<{\[)>}\]]" transparent display contained contains=NONE syn region rubyNestedParentheses start="(" skip="\\\\\|\\)" matchgroup=rubyString end=")" transparent contained syn region rubyNestedCurlyBraces start="{" skip="\\\\\|\\}" matchgroup=rubyString end="}" transparent contained syn region rubyNestedAngleBrackets start="<" skip="\\\\\|\\>" matchgroup=rubyString end=">" transparent contained syn region rubyNestedSquareBrackets start="\[" skip="\\\\\|\\\]" matchgroup=rubyString end="\]" transparent contained " Regular Expression Metacharacters {{{1 " These are mostly Oniguruma ready syn region rubyRegexpComment matchgroup=rubyRegexpSpecial start="(?#" skip="\\)" end=")" contained syn region rubyRegexpParens matchgroup=rubyRegexpSpecial start="(\(?:\|?<\=[=!]\|?>\|?<[a-z_]\w*>\|?[imx]*-[imx]*:\=\|\%(?#\)\@!\)" skip="\\)" end=")" contained transparent contains=@rubyRegexpSpecial syn region rubyRegexpBrackets matchgroup=rubyRegexpCharClass start="\[\^\=" skip="\\\]" end="\]" contained transparent contains=rubyStringEscape,rubyRegexpEscape,rubyRegexpCharClass oneline syn match rubyRegexpCharClass "\\[DdHhSsWw]" contained display syn match rubyRegexpCharClass "\[:\^\=\%(alnum\|alpha\|ascii\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|xdigit\):\]" contained syn match rubyRegexpEscape "\\[].*?+^$|\\/(){}[]" contained syn match rubyRegexpQuantifier "[*?+][?+]\=" contained display syn match rubyRegexpQuantifier "{\d\+\%(,\d*\)\=}?\=" contained display syn match rubyRegexpAnchor "[$^]\|\\[ABbGZz]" contained display syn match rubyRegexpDot "\." contained display syn match rubyRegexpSpecial "|" contained display syn match rubyRegexpSpecial "\\[1-9]\d\=\d\@!" contained display syn match rubyRegexpSpecial "\\k<\%([a-z_]\w*\|-\=\d\+\)\%([+-]\d\+\)\=>" contained display syn match rubyRegexpSpecial "\\k'\%([a-z_]\w*\|-\=\d\+\)\%([+-]\d\+\)\='" contained display syn match rubyRegexpSpecial "\\g<\%([a-z_]\w*\|-\=\d\+\)>" contained display syn match rubyRegexpSpecial "\\g'\%([a-z_]\w*\|-\=\d\+\)'" contained display syn cluster rubyStringSpecial contains=rubyInterpolation,rubyNoInterpolation,rubyStringEscape syn cluster rubyExtendedStringSpecial contains=@rubyStringSpecial,rubyNestedParentheses,rubyNestedCurlyBraces,rubyNestedAngleBrackets,rubyNestedSquareBrackets syn cluster rubyRegexpSpecial contains=rubyInterpolation,rubyNoInterpolation,rubyStringEscape,rubyRegexpSpecial,rubyRegexpEscape,rubyRegexpBrackets,rubyRegexpCharClass,rubyRegexpDot,rubyRegexpQuantifier,rubyRegexpAnchor,rubyRegexpParens,rubyRegexpComment " Numbers and ASCII Codes {{{1 syn match rubyASCIICode "\%(\w\|[]})\"'/]\)\@1" display syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@" display syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@" display syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@" display syn match rubyFloat "\%(\%(\w\|[]})\"']\s*\)\@" display syn match rubyFloat "\%(\%(\w\|[]})\"']\s*\)\@" display " Identifiers {{{1 syn match rubyLocalVariableOrMethod "\<[_[:lower:]][_[:alnum:]]*[?!=]\=" contains=NONE display transparent syn match rubyBlockArgument "&[_[:lower:]][_[:alnum:]]" contains=NONE display transparent syn match rubyConstant "\%(\%(^\|[^.]\)\.\s*\)\@\%(\s*(\)\@!" syn match rubyClassVariable "@@\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" display syn match rubyInstanceVariable "@\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" display syn match rubyGlobalVariable "$\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\|-.\)" syn match rubySymbol "[]})\"':]\@1\|<=\|<\|===\|[=!]=\|[=!]\~\|!@\|!\|>>\|>=\|>\||\|-@\|-\|/\|\[]=\|\[]\|\*\*\|\*\|&\|%\|+@\|+\|`\)" syn match rubySymbol "[]})\"':]\@1_,;:!?/.'"@$*\&+0]\)" syn match rubySymbol "[]})\"':]\@1\@!\)\=" if s:foldable(':') syn region rubySymbol start="[]})\"':]\@1\%(\s*(\)*\s*(\@=" syn match rubyBlockParameter "\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" contained syn region rubyBlockParameterList start="\%(\%(\\|{\)\_s*\)\@32<=|" end="|" oneline display contains=rubyBlockParameter syn match rubyInvalidVariable "$[^ A-Za-z_-]" syn match rubyPredefinedVariable #$[!$&"'*+,./0:;<=>?@\`~]# syn match rubyPredefinedVariable "$\d\+" display syn match rubyPredefinedVariable "$_\>" display syn match rubyPredefinedVariable "$-[0FIKadilpvw]\>" display syn match rubyPredefinedVariable "$\%(deferr\|defout\|stderr\|stdin\|stdout\)\>" display syn match rubyPredefinedVariable "$\%(DEBUG\|FILENAME\|KCODE\|LOADED_FEATURES\|LOAD_PATH\|PROGRAM_NAME\|SAFE\|VERBOSE\)\>" display syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@\%(\s*(\)\@!" syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@\%(\s*(\)\@!" " Normal Regular Expression {{{1 if s:foldable('/') syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(^\|\<\%(and\|or\|while\|until\|unless\|if\|elsif\|when\|not\|then\|else\)\|[;\~=!|&(,{[<>?:*+-]\)\s*\)\@<=/" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\h\k*\s\+\)\@<=/[ \t=]\@!" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial fold else syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(^\|\<\%(and\|or\|while\|until\|unless\|if\|elsif\|when\|not\|then\|else\)\|[;\~=!|&(,{[<>?:*+-]\)\s*\)\@<=/" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\h\k*\s\+\)\@<=/[ \t=]\@!" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial endif " Generalized Regular Expression {{{1 if s:foldable('%') syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r{" end="}[iomxneus]*" skip="\\\\\|\\}" contains=@rubyRegexpSpecial fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r<" end=">[iomxneus]*" skip="\\\\\|\\>" contains=@rubyRegexpSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\[" end="\][iomxneus]*" skip="\\\\\|\\\]" contains=@rubyRegexpSpecial fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r(" end=")[iomxneus]*" skip="\\\\\|\\)" contains=@rubyRegexpSpecial fold syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\z(\s\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial fold else syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r{" end="}[iomxneus]*" skip="\\\\\|\\}" contains=@rubyRegexpSpecial syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r<" end=">[iomxneus]*" skip="\\\\\|\\>" contains=@rubyRegexpSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\[" end="\][iomxneus]*" skip="\\\\\|\\\]" contains=@rubyRegexpSpecial syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r(" end=")[iomxneus]*" skip="\\\\\|\\)" contains=@rubyRegexpSpecial syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="%r\z(\s\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial endif " Normal String {{{1 let s:spell_cluster = exists('ruby_spellcheck_strings') ? ',@Spell' : '' exe 'syn region rubyString matchgroup=rubyStringDelimiter start="\"" end="\"" skip="\\\\\|\\\"" ' . \ (s:foldable('%') ? 'fold' : '') . ' contains=@rubyStringSpecial' . s:spell_cluster exe 'syn region rubyString matchgroup=rubyStringDelimiter start="''" end="''" skip="\\\\\|\\''" ' . \ (s:foldable('%') ? 'fold' : '') . ' contains=rubyQuoteEscape' . s:spell_cluster " Shell Command Output {{{1 if s:foldable('%') syn region rubyString matchgroup=rubyStringDelimiter start="`" end="`" skip="\\\\\|\\`" contains=@rubyStringSpecial fold else syn region rubyString matchgroup=rubyStringDelimiter start="`" end="`" skip="\\\\\|\\`" contains=@rubyStringSpecial endif " Generalized Single Quoted String, Symbol and Array of Strings {{{1 if s:foldable('%') syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" fold syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]{" end="}" skip="\\\\\|\\}" fold contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]<" end=">" skip="\\\\\|\\>" fold contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]\[" end="\]" skip="\\\\\|\\\]" fold contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw](" end=")" skip="\\\\\|\\)" fold contains=rubyNestedParentheses,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%q\z(\s\)" end="\z1" skip="\\\\\|\\\z1" fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s{" end="}" skip="\\\\\|\\}" fold contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s<" end=">" skip="\\\\\|\\>" fold contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s\[" end="\]" skip="\\\\\|\\\]" fold contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s(" end=")" skip="\\\\\|\\)" fold contains=rubyNestedParentheses,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%s\z(\s\)" end="\z1" skip="\\\\\|\\\z1" fold else syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]{" end="}" skip="\\\\\|\\}" contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]<" end=">" skip="\\\\\|\\>" contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw]\[" end="\]" skip="\\\\\|\\\]" contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[qw](" end=")" skip="\\\\\|\\)" contains=rubyNestedParentheses,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%q\z(\s\)" end="\z1" skip="\\\\\|\\\z1" syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s{" end="}" skip="\\\\\|\\}" contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s<" end=">" skip="\\\\\|\\>" contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s\[" end="\]" skip="\\\\\|\\\]" contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%s(" end=")" skip="\\\\\|\\)" contains=rubyNestedParentheses,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%s\z(\s\)" end="\z1" skip="\\\\\|\\\z1" endif " Generalized Double Quoted String and Array of Strings and Shell Command Output {{{1 " Note: %= is not matched here as the beginning of a double quoted string if s:foldable('%') syn region rubyString matchgroup=rubyStringDelimiter start="%\z([~`!@#$%^&*_\-+|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\={" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimiterEscape fold syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape fold syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimiterEscape fold syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimiterEscape fold syn region rubyString matchgroup=rubyStringDelimiter start="%[Qx]\z(\s\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold else syn region rubyString matchgroup=rubyStringDelimiter start="%\z([~`!@#$%^&*_\-+|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\={" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[QWx]\=(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimiterEscape syn region rubyString matchgroup=rubyStringDelimiter start="%[Qx]\z(\s\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial endif " Array of Symbols {{{1 if s:foldable('%') " Array of Symbols syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i{" end="}" skip="\\\\\|\\}" fold contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i<" end=">" skip="\\\\\|\\>" fold contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i\[" end="\]" skip="\\\\\|\\\]" fold contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i(" end=")" skip="\\\\\|\\)" fold contains=rubyNestedParentheses,rubyDelimiterEscape " Array of interpolated Symbols syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I{" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimiterEscape fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimiterEscape fold syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimiterEscape fold else " Array of Symbols syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i{" end="}" skip="\\\\\|\\}" contains=rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i<" end=">" skip="\\\\\|\\>" contains=rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i\[" end="\]" skip="\\\\\|\\\]" contains=rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%i(" end=")" skip="\\\\\|\\)" contains=rubyNestedParentheses,rubyDelimiterEscape " Array of interpolated Symbols syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I{" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets,rubyDelimiterEscape syn region rubySymbol matchgroup=rubySymbolDelimiter start="%I(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses,rubyDelimiterEscape endif " Here Document {{{1 syn region rubyHeredocStart matchgroup=rubyStringDelimiter start=+\%(\%(class\s*\|\%([]})"'.]\|::\)\)\_s*\|\w\)\@>\|[<>]=\=\|<=>\|===\|[=!]=\|[=!]\~\|!\|`\)\%([[:space:];#(]\|$\)\@=" contained containedin=rubyAliasDeclaration,rubyAliasDeclaration2,rubyMethodDeclaration syn cluster rubyDeclaration contains=rubyAliasDeclaration,rubyAliasDeclaration2,rubyMethodDeclaration,rubyModuleDeclaration,rubyClassDeclaration,rubyFunction,rubyBlockParameter " Keywords {{{1 " Note: the following keywords have already been defined: " begin case class def do end for if module unless until while syn match rubyControl "\<\%(and\|break\|in\|next\|not\|or\|redo\|rescue\|retry\|return\)\>[?!]\@!" syn match rubyOperator "\[?!]\@!" syn match rubyBoolean "\<\%(true\|false\)\>[?!]\@!" syn match rubyPseudoVariable "\<\%(nil\|self\|__ENCODING__\|__dir__\|__FILE__\|__LINE__\|__callee__\|__method__\)\>[?!]\@!" " TODO: reorganise syn match rubyBeginEnd "\<\%(BEGIN\|END\)\>[?!]\@!" " Expensive Mode {{{1 " Match 'end' with the appropriate opening keyword for syntax based folding " and special highlighting of module/class/method definitions if !exists("b:ruby_no_expensive") && !exists("ruby_no_expensive") syn match rubyDefine "\" nextgroup=rubyAliasDeclaration skipwhite skipnl syn match rubyDefine "\" nextgroup=rubyMethodDeclaration skipwhite skipnl syn match rubyDefine "\" nextgroup=rubyFunction skipwhite skipnl syn match rubyClass "\" nextgroup=rubyClassDeclaration skipwhite skipnl syn match rubyModule "\" nextgroup=rubyModuleDeclaration skipwhite skipnl if s:foldable('def') syn region rubyMethodBlock start="\" matchgroup=rubyDefine end="\%(\" contains=ALLBUT,@rubyNotTop fold else syn region rubyMethodBlock start="\" matchgroup=rubyDefine end="\%(\" contains=ALLBUT,@rubyNotTop endif if s:foldable('class') syn region rubyBlock start="\" matchgroup=rubyClass end="\" contains=ALLBUT,@rubyNotTop fold else syn region rubyBlock start="\" matchgroup=rubyClass end="\" contains=ALLBUT,@rubyNotTop endif if s:foldable('module') syn region rubyBlock start="\" matchgroup=rubyModule end="\" contains=ALLBUT,@rubyNotTop fold else syn region rubyBlock start="\" matchgroup=rubyModule end="\" contains=ALLBUT,@rubyNotTop endif " modifiers syn match rubyLineContinuation "\\$" nextgroup=rubyConditionalModifier,rubyRepeatModifier skipwhite skipnl syn match rubyConditionalModifier "\<\%(if\|unless\)\>" syn match rubyRepeatModifier "\<\%(while\|until\)\>" if s:foldable('do') syn region rubyDoBlock matchgroup=rubyControl start="\" end="\" contains=ALLBUT,@rubyNotTop fold else syn region rubyDoBlock matchgroup=rubyControl start="\" end="\" contains=ALLBUT,@rubyNotTop endif " curly bracket block or hash literal if s:foldable('{') syn region rubyCurlyBlock matchgroup=rubyCurlyBlockDelimiter start="{" end="}" contains=ALLBUT,@rubyNotTop fold else syn region rubyCurlyBlock matchgroup=rubyCurlyBlockDelimiter start="{" end="}" contains=ALLBUT,@rubyNotTop endif if s:foldable('[') syn region rubyArrayLiteral matchgroup=rubyArrayDelimiter start="\%(\w\|[\]})]\)\@" end="\" contains=ALLBUT,@rubyNotTop fold else syn region rubyBlockExpression matchgroup=rubyControl start="\" end="\" contains=ALLBUT,@rubyNotTop endif if s:foldable('case') syn region rubyCaseExpression matchgroup=rubyConditional start="\" end="\" contains=ALLBUT,@rubyNotTop fold else syn region rubyCaseExpression matchgroup=rubyConditional start="\" end="\" contains=ALLBUT,@rubyNotTop endif if s:foldable('if') syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*%&^|+=-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@" end="\%(\%(\%(\.\@1" contains=ALLBUT,@rubyNotTop fold else syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*%&^|+=-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@" end="\%(\%(\%(\.\@1" contains=ALLBUT,@rubyNotTop endif syn match rubyConditional "\<\%(then\|else\|when\)\>[?!]\@!" contained containedin=rubyCaseExpression syn match rubyConditional "\<\%(then\|else\|elsif\)\>[?!]\@!" contained containedin=rubyConditionalExpression syn match rubyExceptional "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>[?!]\@!" contained containedin=rubyBlockExpression syn match rubyMethodExceptional "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>[?!]\@!" contained containedin=rubyMethodBlock " statements with optional 'do' syn region rubyOptionalDoLine matchgroup=rubyRepeat start="\[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@" matchgroup=rubyOptionalDo end="\%(\\)" end="\ze\%(;\|$\)" oneline contains=ALLBUT,@rubyNotTop if s:foldable('for') syn region rubyRepeatExpression start="\[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@" matchgroup=rubyRepeat end="\" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine fold else syn region rubyRepeatExpression start="\[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@" matchgroup=rubyRepeat end="\" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine endif if !exists("ruby_minlines") let ruby_minlines = 500 endif exec "syn sync minlines=" . ruby_minlines else syn match rubyControl "\[?!]\@!" nextgroup=rubyMethodDeclaration skipwhite skipnl syn match rubyControl "\[?!]\@!" nextgroup=rubyClassDeclaration skipwhite skipnl syn match rubyControl "\[?!]\@!" nextgroup=rubyModuleDeclaration skipwhite skipnl syn match rubyControl "\<\%(case\|begin\|do\|for\|if\|unless\|while\|until\|else\|elsif\|ensure\|then\|when\|end\)\>[?!]\@!" syn match rubyKeyword "\<\%(alias\|undef\)\>[?!]\@!" endif " Special Methods {{{1 if !exists("ruby_no_special_methods") syn keyword rubyAccess public protected private public_class_method private_class_method public_constant private_constant module_function " attr is a common variable name syn match rubyAttribute "\%(\%(^\|;\)\s*\)\@<=attr\>\(\s*[.=]\)\@!" syn keyword rubyAttribute attr_accessor attr_reader attr_writer syn match rubyControl "\<\%(exit!\|\%(abort\|at_exit\|exit\|fork\|loop\|trap\)\>[?!]\@!\)" syn keyword rubyEval eval class_eval instance_eval module_eval syn keyword rubyException raise fail catch throw " false positive with 'include?' syn match rubyInclude "\[?!]\@!" syn keyword rubyInclude autoload extend load prepend refine require require_relative using syn keyword rubyKeyword callcc caller lambda proc endif " Comments and Documentation {{{1 syn match rubySharpBang "\%^#!.*" display syn keyword rubyTodo FIXME NOTE TODO OPTIMIZE HACK REVIEW XXX todo contained syn match rubyComment "#.*" contains=rubySharpBang,rubySpaceError,rubyTodo,@Spell if !exists("ruby_no_comment_fold") && s:foldable('#') syn region rubyMultilineComment start="^\s*#.*\n\%(^\s*#\)\@=" end="^\s*#.*\n\%(^\s*#\)\@!" contains=rubyComment transparent fold keepend syn region rubyDocumentation start="^=begin\ze\%(\s.*\)\=$" end="^=end\%(\s.*\)\=$" contains=rubySpaceError,rubyTodo,@Spell fold else syn region rubyDocumentation start="^=begin\s*$" end="^=end\s*$" contains=rubySpaceError,rubyTodo,@Spell endif " Keyword Nobbling {{{1 " Note: this is a hack to prevent 'keywords' being highlighted as such when called as methods with an explicit receiver syn match rubyKeywordAsMethod "\%(\%(\.\@1\)" transparent contains=NONE syn match rubyKeywordAsMethod "\(defined?\|exit!\)\@!\<[_[:lower:]][_[:alnum:]]*[?!]" transparent contains=NONE " More Symbols {{{1 syn match rubySymbol "\%([{(,]\_s*\)\zs\l\w*[!?]\=::\@!"he=e-1 syn match rubySymbol "[]})\"':]\@1