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" Vim syntax file
" Language: Ruby
" Maintainer: Doug Kearns <dougkearns@gmail.com>
" URL: https://github.com/vim-ruby/vim-ruby
" Release Coordinator: Doug Kearns <dougkearns@gmail.com>
" ----------------------------------------------------------------------------
"
" 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,rubyModuleName,rubyClassName,rubySymbolDelimiter
" 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*\)\@<!<<\|<=>\|<=\|\%(<\|\<class\s\+\u\w*\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<!\%(?\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\=\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=\S\)\)"
syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<0[xX]\x\+\%(_\x\+\)*r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<\%(0[dD]\)\=\%(0\|[1-9]\d*\%(_\d\+\)*\)r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<0[oO]\=\o\+\%(_\o\+\)*r\=i\=\>" display
syn match rubyInteger "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<0[bB][01]\+\%(_[01]\+\)*r\=i\=\>" display
syn match rubyFloat "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\.\d\+\%(_\d\+\)*r\=i\=\>" display
syn match rubyFloat "\%(\%(\w\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\%(\.\d\+\%(_\d\+\)*\)\=\%([eE][-+]\=\d\+\%(_\d\+\)*\)r\=i\=\>" display
" Identifiers {{{1
syn match rubyLocalVariableOrMethod "\<[_[:lower:]][_[:alnum:]]*[?!=]\=" contains=NONE display transparent
syn match rubyBlockArgument "&[_[:lower:]][_[:alnum:]]" contains=NONE display transparent
syn match rubyClassName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
syn match rubyModuleName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
syn match rubyConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\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 rubySymbolDelimiter ":" contained
syn match rubySymbol "[]})\"':]\@1<!:\%(\^\|\~@\|\~\|<<\|<=>\|<=\|<\|===\|[=!]=\|[=!]\~\|!@\|!\|>>\|>=\|>\||\|-@\|-\|/\|\[]=\|\[]\|\*\*\|\*\|&\|%\|+@\|+\|`\)" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\$\%(-.\|[`~<=>_,;:!?/.'"@$*\&+0]\)" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\%(\$\|@@\=\)\=\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" contains=rubySymbolDelimiter
syn match rubySymbol "[]})\"':]\@1<!:\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\%([?!=]>\@!\)\=" contains=rubySymbolDelimiter
if s:foldable(':')
syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:'" end="'" skip="\\\\\|\\'" contains=rubyQuoteEscape fold
syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial fold
else
syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:'" end="'" skip="\\\\\|\\'" contains=rubyQuoteEscape
syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial
endif
syn match rubyCapitalizedMethod "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)*\s*(\@="
syn match rubyBlockParameter "\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*" contained
syn region rubyBlockParameterList start="\%(\%(\<do\>\|{\)\_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*\)\@<!\<\%(ARGF\|ARGV\|ENV\|DATA\|FALSE\|NIL\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\|TRUE\)\>\%(\s*(\)\@!"
syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(RUBY_\%(VERSION\|RELEASE_DATE\|PLATFORM\|PATCHLEVEL\|REVISION\|DESCRIPTION\|COPYRIGHT\|ENGINE\)\)\>\%(\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 match rubyStringDelimiter +\%(\%(class\|::\)\_s*\|\%([]})"'.]\)\s\|\w\)\@<!<<[-~]\=\zs\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)+
syn match rubyStringDelimiter +\%(\%(class\|::\)\_s*\|\%([]})"'.]\)\s\|\w\)\@<!<<[-~]\=\zs"\%([^"]*\)"+
syn match rubyStringDelimiter +\%(\%(class\|::\)\_s*\|\%([]})"'.]\)\s\|\w\)\@<!<<[-~]\=\zs'\%([^']*\)'+
syn match rubyStringDelimiter +\%(\%(class\|::\)\_s*\|\%([]})"'.]\)\s\|\w\)\@<!<<[-~]\=\zs`\%([^`]*\)`+
if s:foldable('<<')
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\).*$\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<"\z([^"]*\)".*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<'\z([^']*\)'.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<`\z([^`]*\)`.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\>.*$\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]"\z([^"]*\)".*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]'\z([^']*\)'.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ keepend fold
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]`\z([^`]*\)`.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)$+ end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs"\z([^"]*\)"$+ end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs'\z([^']*\)'$+ end=+^\z1$+ keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs`\z([^`]*\)`$+ end=+^\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs"\z([^"]*\)"$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs'\z([^']*\)'$+ end=+^\s*\zs\z1$+ keepend fold
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs`\z([^`]*\)`$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend fold
else
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\).*$\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<"\z([^"]*\)".*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<'\z([^']*\)'.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<`\z([^`]*\)`.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\>.*$\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]"\z([^"]*\)".*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]'\z([^']*\)'.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ keepend
syn region rubyString start=+\%(^.*\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]`\z([^`]*\)`.*\)\@<=\n+ matchgroup=rubyStringDelimiter end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)$+ end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs"\z([^"]*\)"$+ end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs'\z([^']*\)'$+ end=+^\z1$+ keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<\zs`\z([^`]*\)`$+ end=+^\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs"\z([^"]*\)"$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs'\z([^']*\)'$+ end=+^\s*\zs\z1$+ keepend
syn region rubyString matchgroup=rubyStringDelimiter start=+\%(\%(class\|::\)\s*\|\%([]}).]\)\s\|\w\)\@<!<<[-~]\zs`\z([^`]*\)`$+ end=+^\s*\zs\z1$+ contains=@rubyStringSpecial keepend
endif
" eRuby Config {{{1
if exists('main_syntax') && main_syntax == 'eruby'
let b:ruby_no_expensive = 1
end
" Module, Class, Method and Alias Declarations {{{1
syn match rubyAliasDeclaration "[^[:space:];#.()]\+" contained contains=rubySymbol,rubyGlobalVariable,rubyPredefinedVariable nextgroup=rubyAliasDeclaration2 skipwhite
syn match rubyAliasDeclaration2 "[^[:space:];#.()]\+" contained contains=rubySymbol,rubyGlobalVariable,rubyPredefinedVariable
syn match rubyMethodDeclaration "[^[:space:];#(]\+" contained contains=rubyConstant,rubyBoolean,rubyPseudoVariable,rubyInstanceVariable,rubyClassVariable,rubyGlobalVariable
syn match rubyClassDeclaration "[^[:space:];#<]\+" contained contains=rubyClassName,rubyOperator
syn match rubyModuleDeclaration "[^[:space:];#<]\+" contained contains=rubyModuleName,rubyOperator
syn match rubyFunction "\<[_[:alpha:]][_[:alnum:]]*[?!=]\=[[:alnum:]_.:?!=]\@!" contained containedin=rubyMethodDeclaration
syn match rubyFunction "\%(\s\|^\)\@1<=[_[:alpha:]][_[:alnum:]]*[?!=]\=\%(\s\|$\)\@=" contained containedin=rubyAliasDeclaration,rubyAliasDeclaration2
syn match rubyFunction "\%([[:space:].]\|^\)\@2<=\%(\[\]=\=\|\*\*\|[-+!~]@\=\|[*/%|&^~]\|<<\|>>\|[<>]=\=\|<=>\|===\|[=!]=\|[=!]\~\|!\|`\)\%([[: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 "\<defined?" display
syn match rubyKeyword "\<\%(super\|yield\)\>[?!]\@!"
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 "\<alias\>" nextgroup=rubyAliasDeclaration skipwhite skipnl
syn match rubyDefine "\<def\>" nextgroup=rubyMethodDeclaration skipwhite skipnl
syn match rubyDefine "\<undef\>" nextgroup=rubyFunction skipwhite skipnl
syn match rubyClass "\<class\>" nextgroup=rubyClassDeclaration skipwhite skipnl
syn match rubyModule "\<module\>" nextgroup=rubyModuleDeclaration skipwhite skipnl
if s:foldable('def')
syn region rubyMethodBlock start="\<def\>" matchgroup=rubyDefine end="\%(\<def\_s\+\)\@<!\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyMethodBlock start="\<def\>" matchgroup=rubyDefine end="\%(\<def\_s\+\)\@<!\<end\>" contains=ALLBUT,@rubyNotTop
endif
if s:foldable('class')
syn region rubyBlock start="\<class\>" matchgroup=rubyClass end="\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyBlock start="\<class\>" matchgroup=rubyClass end="\<end\>" contains=ALLBUT,@rubyNotTop
endif
if s:foldable('module')
syn region rubyBlock start="\<module\>" matchgroup=rubyModule end="\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyBlock start="\<module\>" matchgroup=rubyModule end="\<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="\<do\>" end="\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyDoBlock matchgroup=rubyControl start="\<do\>" end="\<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
endif
" statements without 'do'
if s:foldable('begin')
syn region rubyBlockExpression matchgroup=rubyControl start="\<begin\>" end="\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyBlockExpression matchgroup=rubyControl start="\<begin\>" end="\<end\>" contains=ALLBUT,@rubyNotTop
endif
if s:foldable('case')
syn region rubyCaseExpression matchgroup=rubyConditional start="\<case\>" end="\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyCaseExpression matchgroup=rubyConditional start="\<case\>" end="\<end\>" contains=ALLBUT,@rubyNotTop
endif
if s:foldable('if')
syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*%&^|+=-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![?!]\)\s*\)\@<=\%(if\|unless\)\>" end="\%(\%(\%(\.\@1<!\.\)\|::\)\s*\)\@<!\<end\>" contains=ALLBUT,@rubyNotTop fold
else
syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*%&^|+=-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![?!]\)\s*\)\@<=\%(if\|unless\)\>" end="\%(\%(\%(\.\@1<!\.\)\|::\)\s*\)\@<!\<end\>" 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="\<for\>[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![!=?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyOptionalDo end="\%(\<do\>\)" end="\ze\%(;\|$\)" oneline contains=ALLBUT,@rubyNotTop
if s:foldable('for')
syn region rubyRepeatExpression start="\<for\>[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![!=?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyRepeat end="\<end\>" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine fold
else
syn region rubyRepeatExpression start="\<for\>[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+-]\|\%(\<[_[:lower:]][_[:alnum:]]*\)\@<![!=?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyRepeat end="\<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 "\<def\>[?!]\@!" nextgroup=rubyMethodDeclaration skipwhite skipnl
syn match rubyControl "\<class\>[?!]\@!" nextgroup=rubyClassDeclaration skipwhite skipnl
syn match rubyControl "\<module\>[?!]\@!" 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
syn keyword rubyInclude autoload gem load require require_relative
syn keyword rubyKeyword callcc caller lambda proc
" false positive with 'include?'
syn match rubyMacro "\<include\>[?!]\@!"
syn keyword rubyMacro extend prepend refine using
syn keyword rubyMacro alias_method define_method define_singleton_method remove_method undef_method
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<!\.\)\|::\)\_s*\%([_[:lower:]][_[:alnum:]]*\|\<\%(BEGIN\|END\)\>\)" 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<!\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@="he=e-1
syn match rubySymbol "\%([{(,]\_s*\)\zs[[:space:],{]\l\w*[!?]\=::\@!"hs=s+1,he=e-1
syn match rubySymbol "[[:space:],{(]\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@="hs=s+1,he=e-1
" __END__ Directive {{{1
if s:foldable('__END__')
syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$" fold
else
syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$"
endif
" Default Highlighting {{{1
hi def link rubyClass rubyDefine
hi def link rubyModule rubyDefine
hi def link rubyMethodExceptional rubyDefine
hi def link rubyDefine Define
hi def link rubyAccess rubyMacro
hi def link rubyAttribute rubyMacro
hi def link rubyMacro Macro
hi def link rubyFunction Function
hi def link rubyConditional Conditional
hi def link rubyConditionalModifier rubyConditional
hi def link rubyExceptional rubyConditional
hi def link rubyRepeat Repeat
hi def link rubyRepeatModifier rubyRepeat
hi def link rubyOptionalDo rubyRepeat
hi def link rubyControl Statement
hi def link rubyInclude Include
hi def link rubyInteger Number
hi def link rubyASCIICode Character
hi def link rubyFloat Float
hi def link rubyBoolean Boolean
hi def link rubyException Exception
if !exists("ruby_no_identifiers")
hi def link rubyIdentifier Identifier
else
hi def link rubyIdentifier NONE
endif
hi def link rubyClassVariable rubyIdentifier
hi def link rubyConstant Type
hi def link rubyClassName rubyConstant
hi def link rubyModuleName rubyConstant
hi def link rubyGlobalVariable rubyIdentifier
hi def link rubyInstanceVariable rubyIdentifier
hi def link rubyPredefinedIdentifier rubyIdentifier
hi def link rubyPredefinedConstant rubyPredefinedIdentifier
hi def link rubyPredefinedVariable rubyPredefinedIdentifier
hi def link rubySymbol Constant
hi def link rubyKeyword Keyword
hi def link rubyOperator Operator
hi def link rubyBeginEnd Statement
hi def link rubyEval Statement
hi def link rubyPseudoVariable Constant
hi def link rubyCapitalizedMethod rubyLocalVariableOrMethod
hi def link rubyComment Comment
hi def link rubyData Comment
hi def link rubyDataDirective Delimiter
hi def link rubyDocumentation Comment
hi def link rubyTodo Todo
hi def link rubyQuoteEscape rubyStringEscape
hi def link rubyStringEscape Special
hi def link rubyInterpolationDelimiter Delimiter
hi def link rubyNoInterpolation rubyString
hi def link rubySharpBang PreProc
hi def link rubyRegexpDelimiter rubyStringDelimiter
hi def link rubySymbolDelimiter rubySymbol
hi def link rubyStringDelimiter Delimiter
hi def link rubyHeredoc rubyString
hi def link rubyString String
hi def link rubyRegexpEscape rubyRegexpSpecial
hi def link rubyRegexpQuantifier rubyRegexpSpecial
hi def link rubyRegexpAnchor rubyRegexpSpecial
hi def link rubyRegexpDot rubyRegexpCharClass
hi def link rubyRegexpCharClass rubyRegexpSpecial
hi def link rubyRegexpSpecial Special
hi def link rubyRegexpComment Comment
hi def link rubyRegexp rubyString
hi def link rubyInvalidVariable Error
hi def link rubyError Error
hi def link rubySpaceError rubyError
" Postscript {{{1
let b:current_syntax = "ruby"
let &cpo = s:cpo_sav
unlet! s:cpo_sav
" vim: nowrap sw=2 sts=2 ts=8 noet fdm=marker: