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" Vim syntax file
" Language: Ruby
" Maintainer: Doug Kearns <djkea2@gus.gscit.monash.edu.au>
" Previous Maintainer: Mirko Nasato
" Last Change: 2004 Nov 27
" URL: http://gus.gscit.monash.edu.au/~djkea2/vim/syntax/ruby.vim
" $Id$
" Thanks to perl.vim authors, and to Reimer Behrends. :-) (MN)
" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif
" Expression Substitution and Backslash Notation
syn match rubyExprSubst "\\\\\|\(\(\\M-\\C-\|\\c\|\\C-\|\\M-\)\w\)\|\(\\\o\{3}\|\\x\x\{2}\|\\[abefnrstv]\)" contained
syn match rubyExprSubst "#{[^}]*}" contained
syn match rubyExprSubst "#[$@]\w\+" contained
" Numbers and ASCII Codes
syn match rubyNumber "\w\@<!\(?\(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\=\(\\\o\{3}\|\\x\x\{2}\|\\\=\S\)\)"
syn match rubyNumber "\<\(0x\x\+\|0b[01]\+\|0\o\+\|0\.\d\+\|0\|[1-9][\.0-9_]*\)\>"
" Identifiers - constant, class and instance, global, symbol, iterator, predefined
syn match rubyLocalVariableOrMethod "[_[:lower:]][_[:alnum:]]*[?!=]\=" transparent contains=NONE
if !exists("ruby_no_identifiers")
syn match rubyConstant "\(::\)\=\zs\u\w*"
syn match rubyClassVariable "@@\h\w*"
syn match rubyInstanceVariable "@\h\w*"
syn match rubyGlobalVariable "$\(\h\w*\|-.\)"
syn match rubySymbol ":\@<!:\(\$\|@@\=\)\=\h\w*[?!=]\="
syn match rubyIterator "|[ ,a-zA-Z0-9_*]\+|"
syn match rubyPredefinedVariable "$[!"$&'*+,./0:;<=>?@\\_`~1-9]"
syn match rubyPredefinedVariable "$-[0FIKadilpvw]"
syn match rubyPredefinedVariable "$\(defout\|stderr\|stdin\|stdout\)\>"
syn match rubyPredefinedVariable "$\(DEBUG\|FILENAME\|KCODE\|LOAD_PATH\|SAFE\|VERBOSE\)\>"
syn match rubyPredefinedConstant "__\(FILE\|LINE\)__\>"
syn match rubyPredefinedConstant "\<\(::\)\=\zs\(MatchingData\|NotImplementError\|ARGF\|ARGV\|ENV\)\>"
syn match rubyPredefinedConstant "\<\(::\)\=\zs\(DATA\|FALSE\|NIL\|RUBY_PLATFORM\|RUBY_RELEASE_DATE\)\>"
syn match rubyPredefinedConstant "\<\(::\)\=\zs\(RUBY_VERSION\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\|TRUE\)\>"
"Obsolete Global Constants
"syn match rubyPredefinedConstant "\<\(::\)\=\zs\(PLATFORM\|RELEASE\|VERSION\)\>"
endif
"
" BEGIN Autogenerated Stuff
"
" Generalized Regular Expression
syn region rubyString matchgroup=rubyStringDelimit start="%r!" end="![iomx]*" skip="\\\\\|\\!" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\"" end="\"[iomx]*" skip="\\\\\|\\\"" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r#" end="#[iomx]*" skip="\\\\\|\\#" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\$" end="\$[iomx]*" skip="\\\\\|\\\$" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r%" end="%[iomx]*" skip="\\\\\|\\%" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r&" end="&[iomx]*" skip="\\\\\|\\&" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r'" end="'[iomx]*" skip="\\\\\|\\'" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\*" end="\*[iomx]*" skip="\\\\\|\\\*" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r+" end="+[iomx]*" skip="\\\\\|\\+" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r-" end="-[iomx]*" skip="\\\\\|\\-" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\." end="\.[iomx]*" skip="\\\\\|\\\." contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r/" end="/[iomx]*" skip="\\\\\|\\/" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r:" end=":[iomx]*" skip="\\\\\|\\:" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r;" end=";[iomx]*" skip="\\\\\|\\;" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r=" end="=[iomx]*" skip="\\\\\|\\=" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r?" end="?[iomx]*" skip="\\\\\|\\?" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r@" end="@[iomx]*" skip="\\\\\|\\@" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\\" end="\\[iomx]*" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\^" end="\^[iomx]*" skip="\\\\\|\\\^" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r`" end="`[iomx]*" skip="\\\\\|\\`" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r|" end="|[iomx]*" skip="\\\\\|\\|" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\~" end="\~[iomx]*" skip="\\\\\|\\\~" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r{" end="}[iomx]*" skip="\\\\\|\\}" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r<" end=">[iomx]*" skip="\\\\\|\\>" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r\[" end="\][iomx]*" skip="\\\\\|\\\]" contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start="%r(" end=")[iomx]*" skip="\\\\\|\\)" contains=rubyExprSubst fold
" Generalized Single Quoted String and Array of Strings
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]!" end="!" skip="\\\\\|\\!"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\"" end="\"" skip="\\\\\|\\\""
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]#" end="#" skip="\\\\\|\\#"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\$" end="\$" skip="\\\\\|\\\$"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]%" end="%" skip="\\\\\|\\%"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]&" end="&" skip="\\\\\|\\&"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]'" end="'" skip="\\\\\|\\'"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\*" end="\*" skip="\\\\\|\\\*"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]+" end="+" skip="\\\\\|\\+"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]-" end="-" skip="\\\\\|\\-"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\." end="\." skip="\\\\\|\\\."
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]/" end="/" skip="\\\\\|\\/"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]:" end=":" skip="\\\\\|\\:"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq];" end=";" skip="\\\\\|\\;"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]=" end="=" skip="\\\\\|\\="
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]?" end="?" skip="\\\\\|\\?"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]@" end="@" skip="\\\\\|\\@"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\\" end="\\"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\^" end="\^" skip="\\\\\|\\\^"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]`" end="`" skip="\\\\\|\\`"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]|" end="|" skip="\\\\\|\\|"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\~" end="\~" skip="\\\\\|\\\~"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]{" end="}" skip="\\\\\|\\}"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]<" end=">" skip="\\\\\|\\>"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq]\[" end="\]" skip="\\\\\|\\\]"
syn region rubyString matchgroup=rubyStringDelimit start="%[wq](" end=")" skip="\\\\\|\\)"
" Generalized Double Quoted String and Shell Command Output
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=!" end="!" skip="\\\\\|\\!" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\"" end="\"" skip="\\\\\|\\\"" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=#" end="#" skip="\\\\\|\\#" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\$" end="\$" skip="\\\\\|\\\$" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=%" end="%" skip="\\\\\|\\%" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=&" end="&" skip="\\\\\|\\&" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\='" end="'" skip="\\\\\|\\'" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\*" end="\*" skip="\\\\\|\\\*" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=+" end="+" skip="\\\\\|\\+" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=-" end="-" skip="\\\\\|\\-" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\." end="\." skip="\\\\\|\\\." contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=/" end="/" skip="\\\\\|\\/" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=:" end=":" skip="\\\\\|\\:" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=;" end=";" skip="\\\\\|\\;" contains=rubyExprSubst
"syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\==" end="=" skip="\\\\\|\\=" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]=" end="=" skip="\\\\\|\\=" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=?" end="?" skip="\\\\\|\\?" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=@" end="@" skip="\\\\\|\\@" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\\" end="\\" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\^" end="\^" skip="\\\\\|\\\^" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=`" end="`" skip="\\\\\|\\`" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=|" end="|" skip="\\\\\|\\|" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\~" end="\~" skip="\\\\\|\\\~" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\={" end="}" skip="\\\\\|\\}" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=<" end=">" skip="\\\\\|\\>" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=\[" end="\]" skip="\\\\\|\\\]" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%[Qx]\=(" end=")" skip="\\\\\|\\)" contains=rubyExprSubst
" Normal String and Shell Command Output
syn region rubyString matchgroup=rubyStringDelimit start="\"" end="\"" skip="\\\\\|\\\"" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="'" end="'" skip="\\\\\|\\'"
syn region rubyString matchgroup=rubyStringDelimit start="`" end="`" skip="\\\\\|\\`" contains=rubyExprSubst
"
" END Autogenerated Stuff
"
" Normal Regular Expression
syn region rubyString matchgroup=rubyStringDelimit start="^\s*/" start="\<and\s*/"lc=3 start="\<or\s*/"lc=2 start="\<while\s*/"lc=5 start="\<until\s*/"lc=5 start="\<unless\s*/"lc=6 start="\<if\s*/"lc=2 start="\<elsif\s*/"lc=5 start="\<when\s*/"lc=4 start="[\~=!|&(,[]\s*/"lc=1 end="/[iomx]*" skip="\\\\\|\\/" contains=rubyExprSubst
" Here Document
if version < 600
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(\u\{3,}\|'\u\{3,}'\|"\u\{3,}"\|`\u\{3,}`\)+hs=s+2 end=+^\s*\u\{3,}$+ fold
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(EOF\|'EOF'\|"EOF"\|`EOF`\)+hs=s+2 end=+^\s*EOF$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(EOS\|'EOS'\|"EOS"\|`EOS`\)+hs=s+2 end=+^\s*EOS$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(\u\{3,}\|'\u\{3,}'\|"\u\{3,}"\|`\u\{3,}`\)+hs=s+2 end=+^\u\{3,}$+ fold
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(EOF\|'EOF'\|"EOF"\|`EOF`\)+hs=s+2 end=+^EOF$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(EOS\|'EOS'\|"EOS"\|`EOS`\)+hs=s+2 end=+^EOS$+ contains=rubyExprSubst fold
else
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<\z(\h\w*\)\s*$+hs=s+2 end=+^\z1$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<"\z(.*\)"\s*$+hs=s+2 end=+^\z1$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<'\z(.*\)'\s*$+hs=s+2 end=+^\z1$+ fold
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<`\z(.*\)`\s*$+hs=s+2 end=+^\z1$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<-\z(\h\w*\)\s*$+hs=s+3 end=+^\s*\z1$+ contains=rubyExprSubst fold
syn region rubyString matchgroup=rubyStringDelimit start=+\(class\s*\)\@<!<<-"\z(.*\)"\s*$+
|
