" See http://altern.org/mn/ruby/vim.html for documentation.
" Thanks to perl.vim authors, and to Reimer Behrends. :-)
" 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\)\|\(\\\o\{3}\|\\x\x\{2}\|\\[tnrfbaes]\)" contained
syn match rubyExprSubst "#{[^}]*}" contained
syn match rubyExprSubst "#[$@]\w\+" contained
" Numbers: and ASCII Codes
syn match rubyNumber "\<\(0x\x\+\|0b[01]\+\|0\o\+\|0\.\d\+\|0\|[1-9][\.0-9_]*\)\>"
syn match rubyNumber "?\(\\M-\\C-\|\\c\|\\C-\|\\M-\)\=\(\\\o\{3}\|\\x\x\{2}\|\\\=\w\)"
" Special Identifiers: instance, global, symbol, iterator, predefined
if !exists("ruby_no_identifiers")
syn match rubyIdentifier "\<\u\w*"
syn match rubyIdentifier "@\h\w*"
syn match rubyIdentifier "$\h\w*"
syn match rubyIdentifier "\s:\h\w*"
syn match rubyIdentifier "|[ ,a-zA-Z0-9_*]\+|"
syn match rubyIdentifier "$[\\\"/:'&`+*.,;=~!?@$<>0-9]"
syn match rubyIdentifier "$-[0adFiIlpv]"
endif
"
" BEGIN Autogenerated Stuff (Ruby script @ http://altern.org/mn/ruby/vimregions.rb)
"
" Generalized Regular Expression:
syn region rubyString matchgroup=rubyStringDelimit start="%r!" end="![iopx]*" skip="\\\\\|\\!" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\"" end="\"[iopx]*" skip="\\\\\|\\\"" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r#" end="#[iopx]*" skip="\\\\\|\\#" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\$" end="\$[iopx]*" skip="\\\\\|\\\$" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r%" end="%[iopx]*" skip="\\\\\|\\%" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r&" end="&[iopx]*" skip="\\\\\|\\&" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r'" end="'[iopx]*" skip="\\\\\|\\'" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\*" end="\*[iopx]*" skip="\\\\\|\\\*" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r+" end="+[iopx]*" skip="\\\\\|\\+" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r-" end="-[iopx]*" skip="\\\\\|\\-" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\." end="\.[iopx]*" skip="\\\\\|\\\." contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r/" end="/[iopx]*" skip="\\\\\|\\/" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r:" end=":[iopx]*" skip="\\\\\|\\:" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r;" end=";[iopx]*" skip="\\\\\|\\;" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r=" end="=[iopx]*" skip="\\\\\|\\=" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r?" end="?[iopx]*" skip="\\\\\|\\?" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r@" end="@[iopx]*" skip="\\\\\|\\@" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\\" end="\\[iopx]*" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\^" end="\^[iopx]*" skip="\\\\\|\\\^" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r`" end="`[iopx]*" skip="\\\\\|\\`" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r|" end="|[iopx]*" skip="\\\\\|\\|" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\~" end="\~[iopx]*" skip="\\\\\|\\\~" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r{" end="}[iopx]*" skip="\\\\\|\\}" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r<" end=">[iopx]*" skip="\\\\\|\\>" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r\[" end="\][iopx]*" skip="\\\\\|\\\]" contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start="%r(" end=")[iopx]*" skip="\\\\\|\\)" contains=rubyExprSubst
" 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="\\" 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="\<if\s*/"lc=2 start="[\~=!|&(,]\s*/"lc=1 end="/[iopx]*" skip="\\\\\|\\/" contains=rubyExprSubst
" Here Document:
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(\u\{3,}\|'\u\{3,}'\|"\u\{3,}"\|`\u\{3,}`\)+hs=s+2 end=+^\s*\u\{3,}$+
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(EOF\|'EOF'\|"EOF"\|`EOF`\)+hs=s+2 end=+^\s*EOF$+ contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start=+<<-\(EOS\|'EOS'\|"EOS"\|`EOS`\)+hs=s+2 end=+^\s*EOS$+ contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(\u\{3,}\|'\u\{3,}'\|"\u\{3,}"\|`\u\{3,}`\)+hs=s+2 end=+^\u\{3,}$+
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(EOF\|'EOF'\|"EOF"\|`EOF`\)+hs=s+2 end=+^EOF$+ contains=rubyExprSubst
syn region rubyString matchgroup=rubyStringDelimit start=+<<\(EOS\|'EOS'\|"EOS"\|`EOS`\)+hs=s+2 end=+^EOS$+ contains=rubyExprSubst
" Expensive Mode: colorize *end* according to opening statement
if !exists("ruby_no_expensive")
syn region rubyFunction matchgroup=rubyDefine start="^\s*def\s" matchgroup=NONE end="[?!]\|\>" skip="\.\|\(::\)" oneline
syn region rubyClassOrModule matchgroup=rubyDefine start="^\s*\(class\|module\)\s" end="<\|$\|;"he=e-1 oneline
syn region rubyBlock start="^\s*def\s\+"rs=s matchgroup=rubyDefine end="\<end\>" contains=ALLBUT,rubyExprSubst,rubyTodo nextgroup=rubyFunction
syn region rubyBlock start="^\s*\(class\|module\)\>"rs=s matchgroup=rubyDefine end="\<end\>" contains=ALLBUT,rubyExprSubst,rubyTodo nextgroup=rubyClassOrModule
" modifiers + redundant *do*
syn match rubyControl "\<\(if\|unless\|while\|until\|do\)\>"
" *do* requiring *end*
syn region rubyDoBlock matchgroup=rubyControl start="\<do\>" end="\<end\>" contains=ALLBUT,rubyExprSubst,rubyTodo
" statements without *do*
syn region rubyNoDoBlock matchgroup=rubyControl start="\<\(case\|begin\)\>" start="^\s*\(if\|unless\)\>" start=";\s*\(if\|unless\)\>"hs=s+1 end="\<end\>" contains=ALLBUT,rubyExprSubst,rubyTodo
" statement with optional *do*
syn region rubyOptDoBlock matchgroup=rubyControl start="\<for\>" start="^\s*\(while\|until\)\>" start=";\s*\(while\|until\)\>"hs=s+1 end="\<end\>" contains=ALLBUT,rubyExprSubst,rubyTodo,rubyDoBlock
if !exists("ruby_minlines")
let ruby_minlines = 50
endif
exec "syn sync minlines=" . ruby_minlines
else " not Expensive
syn region rubyFunction matchgroup=rubyControl start="^\s*def\s" matchgroup=NONE end="[?!]\|\>" skip="\.\|\(::\)" oneline
syn region rubyClassOrModule matchgroup=rubyControl start="^\s*\(class\|module\)\s" end="<\|$\|;"he=e-1 oneline
syn keyword rubyControl case begin do for if unless while until end
endif " Expensive?
" Keywords:
syn keyword rubyControl then else elsif when ensure rescue
syn keyword rubyControl and or not in yield lambda proc loop
syn keyword rubyControl break redo retry next return
syn match rubyInclude "^\s*include\>"
syn keyword rubyInclude require
syn keyword rubyTodo TODO FIXME XXX contained
syn keyword rubyBoolean true false self nil
syn keyword rubyException raise fail catch throw
" Comments: and Documentation
syn match rubyComment "#.*" contains=rubyTodo
syn match rubySharpBang "#!.*"
syn region rubyDocumentation start="^=begin" end="^=end.*$" contains=rubyTodo
" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_ruby_syntax_inits")