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-rw-r--r--runtime/syntax/ruby.vim606
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diff --git a/runtime/syntax/ruby.vim b/runtime/syntax/ruby.vim
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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>
+" Last Change: 2021 Nov 03
+" ----------------------------------------------------------------------------
+"
+" 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
+
+" eRuby Config {{{1
+if exists('main_syntax') && main_syntax == 'eruby'
+ let b:ruby_no_expensive = 1
+endif
+
+" 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, 'NONE') > -1
+ return 0
+ endif
+
+ 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
+
+function! s:run_syntax_fold(args) abort
+ let [_0, _1, groups, cmd; _] = matchlist(a:args, '\(["'']\)\(.\{-}\)\1\s\+\(.*\)')
+ if call('s:foldable', split(groups))
+ let cmd .= ' fold'
+ endif
+ exe cmd
+endfunction
+
+com! -nargs=* SynFold call s:run_syntax_fold(<q-args>)
+
+" Not-Top Cluster {{{1
+syn cluster rubyNotTop contains=@rubyCommentNotTop,@rubyStringNotTop,@rubyRegexpSpecial,@rubyDeclaration,@rubyExceptionHandler,@rubyClassOperator,rubyConditional,rubyModuleName,rubyClassName,rubySymbolDelimiter,rubyDoubleQuoteSymbolDelimiter,rubySingleQuoteSymbolDelimiter,rubyParentheses,@Spell
+
+" 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
+
+syn match rubyEnglishBooleanOperator "\<\%(and\|or\|not\)\>"
+
+if exists("ruby_operators") || exists("ruby_pseudo_operators")
+ syn match rubyDotOperator "\.\|&\."
+
+ syn match rubyTernaryOperator "\%(\w\|[^\x00-\x7F]\)\@1<!?\|:"
+ syn match rubyArithmeticOperator "\*\*\|[*/%+]\|->\@!"
+ syn match rubyComparisonOperator "<=>\|<=\|<\|>=\|[-=]\@1<!>"
+ syn match rubyBitwiseOperator "[~^|]\|&\.\@!\|<<\|>>"
+ syn match rubyBooleanOperator "\%(\w\|[^\x00-\x7F]\)\@1<!!\|&&\|||"
+ syn match rubyRangeOperator "\.\.\.\="
+ syn match rubyAssignmentOperator "=>\@!\|-=\|/=\|\*\*=\|\*=\|&&=\|&=\|||=\||=\|%=\|+=\|>>=\|<<=\|\^="
+ syn match rubyAssignmentOperator "=>\@!" contained containedin=rubyBlockParameterList " TODO: this is inelegant
+ syn match rubyEqualityOperator "===\|==\|!=\|!\~\|=\~"
+
+ syn region rubyBracketOperator matchgroup=rubyOperator start="\%(\%(\w\|[^\x00-\x7F]\)[?!]\=\|[]})]\)\@2<=\[" end="]" contains=ALLBUT,@rubyNotTop
+
+ syn match rubyScopeOperator "::"
+ syn match rubySuperClassOperator "<" contained
+ syn match rubyEigenClassOperator "<<" contained
+ syn match rubyLambdaOperator "->"
+ syn match rubySplatOperator "\%([[{(|,=]\_s*\)\@<=\*"
+ syn match rubySplatOperator "\%(^\|\s\)\@1<=\*\%(\h\|[^\x00-\x7F]\|[:$@[]\)\@="
+ syn match rubyDoubleSplatOperator "\%([{(|,]\_s*\)\@<=\*\*"
+ syn match rubyDoubleSplatOperator "\s\@1<=\*\*\%(\h\|[^\x00-\x7F]\|[:$@{]\)\@="
+ syn match rubyProcOperator "\%([[(|,]\_s*\)\@<=&"
+ syn match rubyProcOperator "\s\@1<=&\%(\h\|[^\x00-\x7F]\|[:$@]\|->\)\@="
+
+ syn cluster rubyProperOperator contains=rubyTernaryOperator,rubyArithmeticOperator,rubyComparisonOperator,rubyBitwiseOperator,rubyBooleanOperator,rubyRangeOperator,rubyAssignmentOperator,rubyEqualityOperator,rubyDefinedOperator,rubyEnglishBooleanOperator
+ syn cluster rubyClassOperator contains=rubyEigenClassOperator,rubySuperClassOperator
+ syn cluster rubyPseudoOperator contains=rubyDotOperator,rubyScopeOperator,rubyEigenClassOperator,rubySuperClassOperator,rubyLambdaOperator,rubySplatOperator,rubyDoubleSplatOperator,rubyProcOperator
+ syn cluster rubyOperator contains=ruby.*Operator
+endif
+
+" String Interpolation and Backslash Notation {{{1
+syn region rubyInterpolation matchgroup=rubyInterpolationDelimiter start="#{" end="}" contained contains=ALLBUT,@rubyNotTop
+syn match rubyInterpolation "#\$\%(-\w\|[!$&"'*+,./0:;<>?@\`~_]\|\w\+\)" display contained contains=rubyInterpolationDelimiter,@rubyGlobalVariable
+syn match rubyInterpolation "#@@\=\w\+" display contained contains=rubyInterpolationDelimiter,rubyInstanceVariable,rubyClassVariable
+syn match rubyInterpolationDelimiter "#\ze[$@]" display contained
+
+syn match rubyStringEscape "\\\_." contained display
+syn match rubyStringEscape "\\\o\{1,3}\|\\x\x\{1,2}" contained display
+syn match rubyStringEscape "\\u\%(\x\{4}\|{\x\{1,6}\%(\s\+\x\{1,6}\)*}\)" contained display
+syn match rubyStringEscape "\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=.\)" contained display
+
+syn match rubyBackslashEscape "\\\\" contained display
+syn match rubyQuoteEscape "\\'" contained display
+syn match rubySpaceEscape "\\ " contained display
+
+syn match rubyParenthesisEscape "\\[()]" contained display
+syn match rubyCurlyBraceEscape "\\[{}]" contained display
+syn match rubyAngleBracketEscape "\\[<>]" contained display
+syn match rubySquareBracketEscape "\\[[\]]" contained display
+
+syn region rubyNestedParentheses start="(" skip="\\\\\|\\)" end=")" transparent contained
+syn region rubyNestedCurlyBraces start="{" skip="\\\\\|\\}" end="}" transparent contained
+syn region rubyNestedAngleBrackets start="<" skip="\\\\\|\\>" end=">" transparent contained
+syn region rubyNestedSquareBrackets start="\[" skip="\\\\\|\\\]" end="\]" transparent contained
+
+syn cluster rubySingleCharEscape contains=rubyBackslashEscape,rubyQuoteEscape,rubySpaceEscape,rubyParenthesisEscape,rubyCurlyBraceEscape,rubyAngleBracketEscape,rubySquareBracketEscape
+syn cluster rubyNestedBrackets contains=rubyNested.\+
+syn cluster rubyStringSpecial contains=rubyInterpolation,rubyStringEscape
+syn cluster rubyStringNotTop contains=@rubyStringSpecial,@rubyNestedBrackets,@rubySingleCharEscape
+
+" Regular Expression Metacharacters {{{1
+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=rubyRegexpBrackets,rubyStringEscape,rubyRegexpEscape,rubyRegexpCharClass,rubyRegexpIntersection oneline
+syn match rubyRegexpCharClass "\\[DdHhRSsWw]" contained display
+syn match rubyRegexpCharClass "\[:\^\=\%(alnum\|alpha\|ascii\|blank\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|word\|xdigit\):\]" contained
+syn match rubyRegexpCharClass "\\[pP]{^\=.\{-}}" contained display
+syn match rubyRegexpEscape "\\[].*?+^$|\\/(){}[]" contained " see commit e477f10
+syn match rubyRegexpQuantifier "[*?+][?+]\=" contained display
+syn match rubyRegexpQuantifier "{\d\+\%(,\d*\)\=}?\=" contained display
+syn match rubyRegexpAnchor "[$^]\|\\[ABbGZz]" contained display
+syn match rubyRegexpDot "\.\|\\X" contained display
+syn match rubyRegexpIntersection "&&" contained display
+syn match rubyRegexpSpecial "\\K" 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 rubyRegexpSpecial contains=@rubyStringSpecial,rubyRegexpSpecial,rubyRegexpEscape,rubyRegexpBrackets,rubyRegexpCharClass,rubyRegexpDot,rubyRegexpQuantifier,rubyRegexpAnchor,rubyRegexpParens,rubyRegexpComment,rubyRegexpIntersection
+
+" Numbers {{{1
+syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[xX]\x\+\%(_\x\+\)*r\=i\=\>" display
+syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0[dD]\)\=\%(0\|[1-9]\d*\%(_\d\+\)*\)r\=i\=\>" display
+syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[oO]\=\o\+\%(_\o\+\)*r\=i\=\>" display
+syn match rubyInteger "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<0[bB][01]\+\%(_[01]\+\)*r\=i\=\>" display
+syn match rubyFloat "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\.\d\+\%(_\d\+\)*r\=i\=\>" display
+syn match rubyFloat "\%(\%(\w\|[^\x00-\x7F]\|[]})\"']\s*\)\@<!-\)\=\<\%(0\|[1-9]\d*\%(_\d\+\)*\)\%(\.\d\+\%(_\d\+\)*\)\=\%([eE][-+]\=\d\+\%(_\d\+\)*\)i\=\>" display
+
+" Identifiers {{{1
+syn match rubyClassName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
+syn match rubyModuleName "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@!" contained
+syn match rubyConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<[[:upper:]]\%(\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
+
+SynFold ':' syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:'" end="'" skip="\\\\\|\\'" contains=rubyQuoteEscape,rubyBackslashEscape
+SynFold ':' syn region rubySymbol matchgroup=rubySymbolDelimiter start="[]})\"':]\@1<!:\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial
+
+syn match rubyCapitalizedMethod "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\u\%(\w\|[^\x00-\x7F]\)*\>\%(\s*(\)\@="
+
+syn region rubyParentheses start="(" end=")" contains=ALLBUT,@rubyNotTop contained containedin=rubyBlockParameterList
+syn region rubyBlockParameterList start="\%(\%(\<do\>\|{\)\_s*\)\@32<=|" end="|" contains=ALLBUT,@rubyNotTop,@rubyProperOperator
+
+if exists('ruby_global_variable_error')
+ syn match rubyGlobalVariableError "$[^A-Za-z_]" display
+ syn match rubyGlobalVariableError "$-[^0FIKWadilpvw]" display
+endif
+
+syn match rubyPredefinedVariable #$[!$&"'*+,./0:;<>?@\`~]#
+syn match rubyPredefinedVariable "$\d\+" display
+syn match rubyPredefinedVariable "$_\>" display
+syn match rubyPredefinedVariable "$-[0FIWadilpvw]\>" display
+syn match rubyPredefinedVariable "$\%(stderr\|stdin\|stdout\)\>" display
+syn match rubyPredefinedVariable "$\%(DEBUG\|FILENAME\|LOADED_FEATURES\|LOAD_PATH\|PROGRAM_NAME\|SAFE\|VERBOSE\)\>" display
+syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(ARGF\|ARGV\|ENV\|DATA\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\)\>\%(\s*(\)\@!"
+syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(RUBY_\%(VERSION\|RELEASE_DATE\|PLATFORM\|PATCHLEVEL\|REVISION\|DESCRIPTION\|COPYRIGHT\|ENGINE\)\)\>\%(\s*(\)\@!"
+
+" Deprecated/removed in 1.9
+syn match rubyPredefinedVariable "$="
+syn match rubyPredefinedVariable "$-K\>" display
+syn match rubyPredefinedVariable "$\%(deferr\|defout\)\>" display
+syn match rubyPredefinedVariable "$KCODE\>" display
+" Deprecated/removed in 2.4
+syn match rubyPredefinedConstant "\%(\%(^\|[^.]\)\.\s*\)\@<!\<\%(FALSE\|NIL\|TRUE\)\>\%(\s*(\)\@!"
+
+syn cluster rubyGlobalVariable contains=rubyGlobalVariable,rubyPredefinedVariable,rubyGlobalVariableError
+
+" Normal Regular Expressions {{{1
+SynFold '/' syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(^\|\<\%(and\|or\|while\|until\|unless\|if\|elsif\|when\|not\|then\|else\)\|[;\~=!|&(,{[<>?:*+-]\)\s*\)\@<=/" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
+SynFold '/' syn region rubyRegexp matchgroup=rubyRegexpDelimiter start="\%(\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\s\+\)\@<=/\%(=\|\_s\)\@!" end="/[iomxneus]*" skip="\\\\\|\\/" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
+
+" Generalized Regular Expressions {{{1
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial nextgroup=@rubyModifier skipwhite
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r{" end="}[iomxneus]*" skip="\\\\\|\\}" contains=@rubyRegexpSpecial
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r<" end=">[iomxneus]*" skip="\\\\\|\\>" contains=@rubyRegexpSpecial,rubyNestedAngleBrackets
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\[" end="\][iomxneus]*" skip="\\\\\|\\\]" contains=@rubyRegexpSpecial
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r(" end=")[iomxneus]*" skip="\\\\\|\\)" contains=@rubyRegexpSpecial
+SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\z(\s\)" end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial
+
+" Characters {{{1
+syn match rubyCharacter "\%(\w\|[^\x00-\x7F]\|[]})\"'/]\)\@1<!\%(?\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\=\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\[[:space:]]\|\\\=[^[:space:]]\)\)"
+syn match rubyCharacter "\%(\w\|[^\x00-\x7F]\|[]})\"'/]\)\@1<!?\\u\%(\x\{4}\|{\x\{1,6}}\)"
+
+" Normal Strings {{{1
+let s:spell_cluster = exists('ruby_spellcheck_strings') ? ',@Spell' : ''
+let s:fold_arg = s:foldable('string') ? ' fold' : ''
+exe 'syn region rubyString matchgroup=rubyStringDelimiter start="\"" end="\"" skip="\\\\\|\\\"" contains=@rubyStringSpecial' . s:spell_cluster . s:fold_arg
+exe 'syn region rubyString matchgroup=rubyStringDelimiter start="''" end="''" skip="\\\\\|\\''" contains=rubyQuoteEscape,rubyBackslashEscape' . s:spell_cluster . s:fold_arg
+unlet s:spell_cluster s:fold_arg
+
+" Shell Command Output {{{1
+SynFold 'string' syn region rubyString matchgroup=rubyStringDelimiter start="`" end="`" skip="\\\\\|\\`" contains=@rubyStringSpecial
+
+" Generalized Single Quoted Strings, Symbols, Array of Strings and Array of Symbols {{{1
+
+" Non-bracket punctuation delimiters {{{2
+let s:names = { '~': 'Tilde', '`': 'BackQuote', '!': 'Bang', '@': 'At', '#': 'Hash', '$': 'Dollar', '%': 'Percent', '^': 'Caret',
+ \ '&': 'Ampersand', '*': 'Asterix', '_': 'Underscore', '-': 'Dash', '+': 'Plus', '=': 'Equals', '|': 'Bar',
+ \ '\': 'Backslash', ':': 'Colon', ';': 'Semicolon', '"': 'DoubleQuote', "'": 'Quote', ',': 'Comma', '.': 'Period',
+ \ '?': 'QuestionMark', '/': 'ForwardSlash' }
+
+for s:delimiter in keys(s:names)
+ let s:group = 'ruby' . s:names[s:delimiter] . 'Escape'
+
+ if s:delimiter =~ '[\"]'
+ let s:delimiter = '\' . s:delimiter
+ endif
+
+ exe 'syn match ' . s:group . ' "\V\\' . s:delimiter . '" contained display'
+ exe 'syn cluster rubySingleCharEscape add=' . s:group
+ exe 'SynFold ''%'' syn region rubyString matchgroup=rubyPercentStringDelimiter start="\V%q' . s:delimiter . '" end="\V' . s:delimiter . '" skip="\V\\\\\|\\' . s:delimiter . '" contains=rubyBackslashEscape,' . s:group . ' nextgroup=@rubyModifier skipwhite'
+ exe 'SynFold ''%'' syn region rubyString matchgroup=rubyPercentStringDelimiter start="\V%w' . s:delimiter . '" end="\V' . s:delimiter . '" skip="\V\\\\\|\\' . s:delimiter . '" contains=rubyBackslashEscape,rubySpaceEscape,' . s:group . ' nextgroup=@rubyModifier skipwhite'
+ exe 'SynFold ''%'' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="\V%s' . s:delimiter . '" end="\V' . s:delimiter . '" skip="\V\\\\\|\\' . s:delimiter . '" contains=rubyBackslashEscape,' . s:group . ' nextgroup=@rubyModifier skipwhite'
+ exe 'SynFold ''%'' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="\V%i' . s:delimiter . '" end="\V' . s:delimiter . '" skip="\V\\\\\|\\' . s:delimiter . '" contains=rubyBackslashEscape,rubySpaceEscape,' . s:group . ' nextgroup=@rubyModifier skipwhite'
+ exe 'hi def link ' . s:group . ' rubyStringEscape'
+endfor
+
+unlet s:delimiter s:group s:names
+" }}}2
+
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q{" end="}" skip="\\\\\|\\}" contains=rubyBackslashEscape,rubyCurlyBraceEscape,rubyNestedCurlyBraces
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q<" end=">" skip="\\\\\|\\>" contains=rubyBackslashEscape,rubyAngleBracketEscape,rubyNestedAngleBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q\[" end="\]" skip="\\\\\|\\\]" contains=rubyBackslashEscape,rubySquareBracketEscape,rubyNestedSquareBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q(" end=")" skip="\\\\\|\\)" contains=rubyBackslashEscape,rubyParenthesisEscape,rubyNestedParentheses
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q\z(\s\)" end="\z1" skip="\\\\\|\\\z1" contains=rubyBackslashEscape,rubySpaceEscape
+
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w{" end="}" skip="\\\\\|\\}" contains=rubyBackslashEscape,rubySpaceEscape,rubyCurlyBraceEscape,rubyNestedCurlyBraces
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w<" end=">" skip="\\\\\|\\>" contains=rubyBackslashEscape,rubySpaceEscape,rubyAngleBracketEscape,rubyNestedAngleBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w\[" end="\]" skip="\\\\\|\\\]" contains=rubyBackslashEscape,rubySpaceEscape,rubySquareBracketEscape,rubyNestedSquareBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w(" end=")" skip="\\\\\|\\)" contains=rubyBackslashEscape,rubySpaceEscape,rubyParenthesisEscape,rubyNestedParentheses
+
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s{" end="}" skip="\\\\\|\\}" contains=rubyBackslashEscape,rubyCurlyBraceEscape,rubyNestedCurlyBraces
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s<" end=">" skip="\\\\\|\\>" contains=rubyBackslashEscape,rubyAngleBracketEscape,rubyNestedAngleBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s\[" end="\]" skip="\\\\\|\\\]" contains=rubyBackslashEscape,rubySquareBracketEscape,rubyNestedSquareBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s(" end=")" skip="\\\\\|\\)" contains=rubyBackslashEscape,rubyParenthesisEscape,rubyNestedParentheses
+SynFold '%' syn region rubyString matchgroup=rubyPercentSymbolDelimiter start="%s\z(\s\)" end="\z1" skip="\\\\\|\\\z1" contains=rubyBackslashEscape,rubySpaceEscape
+
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i{" end="}" skip="\\\\\|\\}" contains=rubyBackslashEscape,rubySpaceEscape,rubyCurlyBraceEscape,rubyNestedCurlyBraces
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i<" end=">" skip="\\\\\|\\>" contains=rubyBackslashEscape,rubySpaceEscape,rubyAngleBracketEscape,rubyNestedAngleBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i\[" end="\]" skip="\\\\\|\\\]" contains=rubyBackslashEscape,rubySpaceEscape,rubySquareBracketEscape,rubyNestedSquareBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i(" end=")" skip="\\\\\|\\)" contains=rubyBackslashEscape,rubySpaceEscape,rubyParenthesisEscape,rubyNestedParentheses
+
+" Generalized Double Quoted Strings, Array of Strings, Array of Symbols and Shell Command Output {{{1
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="\%(\%(\w\|[^\x00-\x7F]\|]\)\s*\)\@<!%=" end="=" skip="\\\\\|\\=" contains=@rubyStringSpecial nextgroup=@rubyModifier skipwhite
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%\z([~`!@#$%^&*_\-+|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial nextgroup=@rubyModifier skipwhite
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[QWx]\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial nextgroup=@rubyModifier skipwhite
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[QWx]\={" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[QWx]\=<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[QWx]\=\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[QWx]\=(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses
+SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%[Qx]\z(\s\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial
+
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%I\z([~`!@#$%^&*_\-+=|\:;"',.?/]\)" end="\z1" skip="\\\\\|\\\z1" contains=@rubyStringSpecial nextgroup=@rubyModifier skipwhite
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%I{" end="}" skip="\\\\\|\\}" contains=@rubyStringSpecial,rubyNestedCurlyBraces
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%I<" end=">" skip="\\\\\|\\>" contains=@rubyStringSpecial,rubyNestedAngleBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%I\[" end="\]" skip="\\\\\|\\\]" contains=@rubyStringSpecial,rubyNestedSquareBrackets
+SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%I(" end=")" skip="\\\\\|\\)" contains=@rubyStringSpecial,rubyNestedParentheses
+
+" Here Documents {{{1
+syn region rubyHeredocStart matchgroup=rubyHeredocDelimiter start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<[-~]\=\zs\%(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)+ end=+$+ oneline contains=ALLBUT,@rubyNotTop
+
+syn region rubyHeredocStart matchgroup=rubyHeredocDelimiter start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<[-~]\=\zs"\%([^"]*\)"+ end=+$+ oneline contains=ALLBUT,@rubyNotTop
+syn region rubyHeredocStart matchgroup=rubyHeredocDelimiter start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<[-~]\=\zs'\%([^']*\)'+ end=+$+ oneline contains=ALLBUT,@rubyNotTop
+syn region rubyHeredocStart matchgroup=rubyHeredocDelimiter start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<[-~]\=\zs`\%([^`]*\)`+ end=+$+ oneline contains=ALLBUT,@rubyNotTop
+
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+2 matchgroup=rubyHeredocDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<"\z([^"]*\)"\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+2 matchgroup=rubyHeredocDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<'\z([^']*\)'\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+2 matchgroup=rubyHeredocDelimiter end=+^\z1$+ contains=rubyHeredocStart keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})"'`]\)\s\|\w\)\@<!<<`\z([^`]*\)`\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+2 matchgroup=rubyHeredocDelimiter end=+^\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})]\)\s\|\w\)\@<!<<[-~]\z(\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+3 matchgroup=rubyHeredocDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})]\)\s\|\w\)\@<!<<[-~]"\z([^"]*\)"\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+3 matchgroup=rubyHeredocDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})]\)\s\|\w\)\@<!<<[-~]'\z([^']*\)'\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+3 matchgroup=rubyHeredocDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart keepend
+SynFold '<<' syn region rubyString start=+\%(\%(class\|::\|\.\@1<!\.\)\_s*\|\%([]})]\)\s\|\w\)\@<!<<[-~]`\z([^`]*\)`\ze\%(.*<<[-~]\=['`"]\=\h\)\@!+hs=s+3 matchgroup=rubyHeredocDelimiter end=+^\s*\zs\z1$+ contains=rubyHeredocStart,@rubyStringSpecial keepend
+
+" Module, Class, Method and Alias Declarations {{{1
+syn match rubyAliasDeclaration "[^[:space:];#.()]\+" contained contains=rubySymbol,@rubyGlobalVariable nextgroup=rubyAliasDeclaration2 skipwhite
+syn match rubyAliasDeclaration2 "[^[:space:];#.()]\+" contained contains=rubySymbol,@rubyGlobalVariable
+syn match rubyMethodDeclaration "[^[:space:];#(]\+" contained contains=rubyConstant,rubyBoolean,rubyPseudoVariable,rubyInstanceVariable,rubyClassVariable,rubyGlobalVariable
+syn match rubyClassDeclaration "[^[:space:];#<]\+" contained contains=rubyClassName,rubyScopeOperator nextgroup=rubySuperClassOperator skipwhite
+syn match rubyModuleDeclaration "[^[:space:];#<]\+" contained contains=rubyModuleName,rubyScopeOperator
+
+syn match rubyMethodName "\<\%([_[:alpha:]]\|[^\x00-\x7F]\)\%([_[:alnum:]]\|[^\x00-\x7F]\)*[?!=]\=\%([[:alnum:]_.:?!=]\|[^\x00-\x7F]\)\@!" contained containedin=rubyMethodDeclaration
+syn match rubyMethodName "\%(\s\|^\)\@1<=\%([_[:alpha:]]\|[^\x00-\x7F]\)\%([_[:alnum:]]\|[^\x00-\x7F]\)*[?!=]\=\%(\s\|$\)\@=" contained containedin=rubyAliasDeclaration,rubyAliasDeclaration2
+syn match rubyMethodName "\%([[:space:].]\|^\)\@1<=\%(\[\]=\=\|\*\*\|[-+!~]@\=\|[*/%|&^~]\|<<\|>>\|[<>]=\=\|<=>\|===\|[=!]=\|[=!]\~\|!\|`\)\%([[:space:];#(]\|$\)\@=" contained containedin=rubyAliasDeclaration,rubyAliasDeclaration2,rubyMethodDeclaration
+
+syn cluster rubyDeclaration contains=rubyAliasDeclaration,rubyAliasDeclaration2,rubyMethodDeclaration,rubyModuleDeclaration,rubyClassDeclaration,rubyMethodName
+
+" Keywords {{{1
+" TODO: reorganise
+syn match rubyControl "\%#=1\<\%(break\|in\|next\|redo\|retry\|return\)\>"
+syn match rubyKeyword "\%#=1\<\%(super\|yield\)\>"
+syn match rubyBoolean "\%#=1\<\%(true\|false\)\>[?!]\@!"
+syn match rubyPseudoVariable "\%#=1\<\(self\|nil\)\>[?!]\@!"
+syn match rubyPseudoVariable "\%#=1\<__\%(ENCODING\|dir\|FILE\|LINE\|callee\|method\)__\>"
+syn match rubyBeginEnd "\%#=1\<\%(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=rubyMethodName skipwhite skipnl
+ syn match rubyClass "\<class\>" nextgroup=rubyClassDeclaration,rubyEigenClassOperator skipwhite skipnl
+ syn match rubyModule "\<module\>" nextgroup=rubyModuleDeclaration skipwhite skipnl
+
+ SynFold 'def' syn region rubyMethodBlock start="\<def\>" matchgroup=rubyDefine skip="\<end:\|\%(\<def\_s\+\)\@<=end\>" end="\<end\>" contains=ALLBUT,@rubyNotTop
+ SynFold 'class' syn region rubyClassBlock start="\<class\>" matchgroup=rubyClass skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+ SynFold 'module' syn region rubyModuleBlock start="\<module\>" matchgroup=rubyModule skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+
+ " endless def
+ syn match rubyDefine "\<def\s\+\ze[^[:space:];#(]\+\%(\s\+\|\s*(.*)\s*\)=" nextgroup=rubyMethodDeclaration skipwhite
+
+ " modifiers
+ syn match rubyLineContinuation "\\$" nextgroup=@rubyModifier skipwhite skipnl
+ syn match rubyConditionalModifier "\<\%(if\|unless\)\>"
+ syn match rubyRepeatModifier "\<\%(while\|until\)\>"
+ syn match rubyRescueModifier "\<rescue\>"
+
+ syn cluster rubyModifier contains=rubyConditionalModifier,rubyRepeatModifier,rubyRescueModifier
+
+ SynFold 'do' syn region rubyDoBlock matchgroup=rubyControl start="\<do\>" skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+
+ " curly bracket block or hash literal
+ SynFold '{' syn region rubyCurlyBlock matchgroup=rubyCurlyBlockDelimiter start="{" end="}" contains=ALLBUT,@rubyNotTop
+ SynFold '[' syn region rubyArrayLiteral matchgroup=rubyArrayDelimiter start="\%(\%(\w\|[^\x00-\x7F]\)[?!]\=\|[]})]\)\@2<!\[" end="]" contains=ALLBUT,@rubyNotTop
+
+ " statements without 'do'
+ SynFold 'begin' syn region rubyBlockExpression matchgroup=rubyControl start="\<begin\>" skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+ SynFold 'case' syn region rubyCaseExpression matchgroup=rubyConditional start="\<case\>" skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+
+ SynFold 'if' syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\<then\s\|\%(\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\@<![?!]\)\s*\)\@<=\%(if\|unless\)\>" skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop
+
+ syn match rubyConditional "\<\%(then\|else\|when\)\>" contained containedin=rubyCaseExpression
+ syn match rubyConditional "\<\%(then\|else\|elsif\)\>" contained containedin=rubyConditionalExpression
+
+ syn match rubyExceptionHandler "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>" contained containedin=rubyBlockExpression,rubyDoBlock
+ syn match rubyExceptionHandler2 "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>" contained containedin=rubyModuleBlock,rubyClassBlock,rubyMethodBlock
+ syn cluster rubyExceptionHandler contains=rubyExceptionHandler,rubyExceptionHandler2
+
+ " statements with optional 'do'
+ syn region rubyOptionalDoLine matchgroup=rubyRepeat start="\<for\>" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\%(\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\@<![!?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyOptionalDo end="\<do\>" end="\ze\%(;\|$\)" oneline contains=ALLBUT,@rubyNotTop
+
+ SynFold 'for' syn region rubyRepeatExpression start="\<for\>" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\%(\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\@<![!?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyRepeat skip="\<end:" end="\<end\>" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine
+
+ if !exists("ruby_minlines")
+ let ruby_minlines = 500
+ endif
+ exe "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\|rescue\|ensure\|then\|when\|end\)\>"
+ syn match rubyKeyword "\<\%(alias\|undef\)\>"
+endif
+
+" Special Methods {{{1
+if !exists("ruby_no_special_methods")
+ syn match rubyAccess "\<\%(public\|protected\|private\)\>" " use re=2
+ syn match rubyAccess "\%#=1\<\%(public\|private\)_class_method\>"
+ syn match rubyAccess "\%#=1\<\%(public\|private\)_constant\>"
+ syn match rubyAccess "\%#=1\<module_function\>"
+ syn match rubyAttribute "\%#=1\%(\%(^\|;\)\s*\)\@<=attr\>\(\s*[.=]\)\@!" " attr is a common variable name
+ syn match rubyAttribute "\%#=1\<attr_\%(accessor\|reader\|writer\)\>"
+ syn match rubyControl "\%#=1\<\%(abort\|at_exit\|exit\|fork\|loop\|trap\)\>"
+ syn match rubyEval "\%#=1\<eval\>"
+ syn match rubyEval "\%#=1\<\%(class\|instance\|module\)_eval\>"
+ syn match rubyException "\%#=1\<\%(raise\|fail\|catch\|throw\)\>"
+ syn match rubyInclude "\%#=1\<\%(autoload\|gem\|load\|require\%(_relative\)\=\)\>"
+ syn match rubyKeyword "\%#=1\<\%(callcc\|caller\|lambda\|proc\)\>"
+ syn match rubyMacro "\%#=1\<\%(extend\|include\|prepend\|refine\|using\)\>"
+ syn match rubyMacro "\%#=1\<\%(alias\|define\|define_singleton\|remove\|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 rubyEncoding "[[:alnum:]-_]\+" contained display
+syn match rubyMagicComment "\c\%<3l#\s*\zs\%(coding\|encoding\):" contained nextgroup=rubyEncoding skipwhite
+syn match rubyMagicComment "\c\%<10l#\s*\zs\%(frozen_string_literal\|warn_indent\|warn_past_scope\):" contained nextgroup=rubyBoolean skipwhite
+syn match rubyMagicComment "\c\%<10l#\s*\zs\%(shareable_constant_value\):" contained nextgroup=rubyEncoding skipwhite
+syn match rubyComment "#.*" contains=@rubyCommentSpecial,rubySpaceError,@Spell
+
+syn cluster rubyCommentSpecial contains=rubySharpBang,rubyTodo,rubyMagicComment
+syn cluster rubyCommentNotTop contains=@rubyCommentSpecial,rubyEncoding
+
+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
+
+" {{{1 Useless Line Continuations
+syn match rubyUselessLineContinuation "\%([.:,;{([<>~\*%&^|+=-]\|%(\%(\w\|[^\x00-\x7F]\)\@1<![?!]\)\s*\zs\\$" nextgroup=rubyUselessLineContinuation skipwhite skipempty
+syn match rubyUselessLineContinuation "\\$" nextgroup=rubyUselessLineContinuation skipwhite skipempty contained
+
+" Keyword Nobbling {{{1
+" prevent methods with keyword names being highlighted as keywords when called
+syn match rubyKeywordAsMethod "\%(\%(\.\@1<!\.\)\|&\.\|::\)\_s*\%([_[:lower:]][_[:alnum:]]*\|\%(BEGIN\|END\)\>\)" transparent contains=rubyDotOperator,rubyScopeOperator
+
+" Bang and Predicate Methods and Operators {{{1
+syn match rubyBangPredicateMethod "\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[?!]"
+
+if !exists("ruby_no_special_methods")
+ syn match rubyControl "\%#=1\<exit!" display
+endif
+syn match rubyDefinedOperator "\%#=1\<defined?" display
+
+" 1.9-style Hash Keys and Keyword Parameters {{{1
+syn match rubySymbol "\%(\w\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[?!]\=::\@!"he=e-1 contained containedin=rubyBlockParameterList,rubyCurlyBlock
+syn match rubySymbol "[]})\"':]\@1<!\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],;]\@="he=e-1
+syn match rubySymbol "[[:space:],{(]\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],;]\@="hs=s+1,he=e-1
+syn match rubySingleQuoteSymbolDelimiter "'" contained
+syn match rubySymbol "'\%(\\.\|[^']\)*'::\@!"he=e-1 contains=rubyQuoteEscape,rubyBackslashEscape,rubySingleQuoteSymbolDelimiter
+syn match rubyDoubleQuoteSymbolDelimiter "\"" contained
+syn match rubySymbol "\"\%(\\.\|[^\"]\)*\"::\@!"he=e-1 contains=@rubyStringSpecial,rubyDoubleQuoteSymbolDelimiter
+
+" __END__ Directive {{{1
+SynFold '__END__' syn region rubyData matchgroup=rubyDataDirective start="^__END__$" end="\%$"
+
+" Default Highlighting {{{1
+hi def link rubyClass rubyDefine
+hi def link rubyModule rubyDefine
+hi def link rubyExceptionHandler2 rubyDefine
+hi def link rubyDefine Define
+hi def link rubyAccess rubyMacro
+hi def link rubyAttribute rubyMacro
+hi def link rubyMacro Macro
+hi def link rubyMethodName rubyFunction
+hi def link rubyFunction Function
+hi def link rubyConditional Conditional
+hi def link rubyConditionalModifier rubyConditional
+hi def link rubyExceptionHandler rubyConditional
+hi def link rubyRescueModifier rubyExceptionHandler
+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 rubyCharacter 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 rubyDefinedOperator rubyOperator
+hi def link rubyEnglishBooleanOperator rubyOperator
+if exists("ruby_operators")
+ hi def link rubyTernaryOperator rubyOperator
+ hi def link rubyArithmeticOperator rubyOperator
+ hi def link rubyComparisonOperator rubyOperator
+ hi def link rubyBitwiseOperator rubyOperator
+ hi def link rubyBooleanOperator rubyOperator
+ hi def link rubyRangeOperator rubyOperator
+ hi def link rubyAssignmentOperator rubyOperator
+ hi def link rubyEqualityOperator rubyOperator
+endif
+
+if exists("ruby_pseudo_operators")
+ hi def link rubyPseudoOperator Special
+ hi def link rubyDotOperator rubyPseudoOperator
+ hi def link rubyScopeOperator rubyPseudoOperator
+ hi def link rubySuperClassOperator rubyPseudoOperator
+ hi def link rubyEigenClassOperator rubyPseudoOperator
+ hi def link rubyLambdaOperator rubyPseudoOperator
+ hi def link rubyDoubleSplatOperator rubyPseudoOperator
+ hi def link rubySplatOperator rubyPseudoOperator
+ hi def link rubyProcOperator rubyPseudoOperator
+endif
+
+hi def link rubyBeginEnd Statement
+hi def link rubyEval Statement
+hi def link rubyPseudoVariable Constant
+hi def link rubyCapitalizedMethod NONE
+
+hi def link rubyComment Comment
+hi def link rubyEncoding Constant
+hi def link rubyMagicComment SpecialComment
+hi def link rubyData Comment
+hi def link rubyDataDirective Delimiter
+hi def link rubyDocumentation Comment
+hi def link rubyTodo Todo
+
+hi def link rubyBackslashEscape rubyStringEscape
+hi def link rubyQuoteEscape rubyStringEscape
+hi def link rubySpaceEscape rubyStringEscape
+hi def link rubyParenthesisEscape rubyStringEscape
+hi def link rubyCurlyBraceEscape rubyStringEscape
+hi def link rubyAngleBracketEscape rubyStringEscape
+hi def link rubySquareBracketEscape rubyStringEscape
+hi def link rubyStringEscape Special
+
+hi def link rubyInterpolationDelimiter Delimiter
+hi def link rubySharpBang PreProc
+hi def link rubyStringDelimiter Delimiter
+hi def link rubyHeredocDelimiter rubyStringDelimiter
+hi def link rubyPercentRegexpDelimiter rubyRegexpDelimiter
+hi def link rubyPercentStringDelimiter rubyStringDelimiter
+hi def link rubyPercentSymbolDelimiter rubySymbolDelimiter
+hi def link rubyDoubleQuoteSymbolDelimiter rubySymbolDelimiter
+hi def link rubySingleQuoteSymbolDelimiter rubySymbolDelimiter
+hi def link rubyRegexpDelimiter rubyStringDelimiter
+hi def link rubySymbolDelimiter rubySymbol
+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 rubyRegexpIntersection rubyRegexpSpecial
+hi def link rubyRegexpSpecial Special
+hi def link rubyRegexpComment Comment
+hi def link rubyRegexp rubyString
+
+hi def link rubyError Error
+if exists("ruby_line_continuation_error")
+ hi def link rubyUselessLineContinuation rubyError
+endif
+hi def link rubyGlobalVariableError rubyError
+hi def link rubySpaceError rubyError
+
+" Postscript {{{1
+let b:current_syntax = "ruby"
+
+let &cpo = s:cpo_sav
+unlet! s:cpo_sav
+
+delc SynFold
+
+" vim: nowrap sw=2 sts=2 ts=8 noet fdm=marker: