Remove grapqhl, fixes #387v3.7.1

1 files changed, 106 insertions, 100 deletions

diff --git a/syntax/ruby.vim b/syntax/ruby.vim
index f3cf8c12..b131782c 100644
--- a/syntax/ruby.vim
+++ b/syntax/ruby.vim
@@ -68,8 +68,7 @@ endfunction
 
 com! -nargs=* SynFold call s:run_syntax_fold(<q-args>)
 
-" }}}
-
+" Not-Top Cluster {{{1
 syn cluster rubyNotTop contains=@rubyCommentNotTop,@rubyStringNotTop,@rubyRegexpSpecial,@rubyDeclaration,@rubyExceptionHandler,rubyConditional,rubyModuleName,rubyClassName,rubySymbolDelimiter
 
 " Whitespace Errors {{{1
@@ -84,17 +83,17 @@ endif
 
 " Operators {{{1
 if exists("ruby_operators")
-  syn match  rubyDotOperator	    "\.\|&\." containedin=rubyKeywordAsMethod
-  syn match  rubyTernaryOperator    "[[:alnum:]]\@1<!?\|:"
+  syn match  rubyDotOperator	    "\.\|&\."
+  syn match  rubyTernaryOperator    "\%(\w\|[^\x00-\x7F]\)\@1<!?\|:"
   syn match  rubyArithmeticOperator "\*\*\|[*/%+]\|->\@!"
   syn match  rubyComparisonOperator "<=>\|<=\|\%(<\|\<class\s\+\u\w*\s*\)\@<!<<\@!\|>=\|[-=]\@1<!>"
   syn match  rubyBitwiseOperator    "[~^|]\|&\.\@!\|\%(class\s*\)\@<!<<\|>>"
-  syn match  rubyBooleanOperator    "[[:alnum:]]\@1<!!\|&&\|||"
+  syn match  rubyBooleanOperator    "\%(\w\|[^\x00-\x7F]\)\@1<!!\|&&\|||"
   syn match  rubyRangeOperator	    "\.\.\.\="
   syn match  rubyAssignmentOperator "=>\@!\|-=\|/=\|\*\*=\|\*=\|&&=\|&=\|||=\||=\|%=\|+=\|>>=\|<<=\|\^="
   syn match  rubyEqualityOperator   "===\|==\|!=\|!\~\|=\~"
   syn match  rubyScopeOperator	    "::"
-  syn region rubyBracketOperator    matchgroup=rubyOperator start="\%(\w[?!]\=\|[]})]\)\@2<=\[\s*" end="\s*]" contains=ALLBUT,@rubyNotTop
+  syn region rubyBracketOperator    matchgroup=rubyOperator start="\%(\%(\w\|[^\x00-\x7F]\)[?!]\=\|[]})]\)\@2<=\[" end="]" contains=ALLBUT,@rubyNotTop
 
   syn cluster rubyOperator contains=ruby.*Operator
 endif
@@ -105,26 +104,26 @@ syn match  rubyInterpolation	      "#\$\%(-\w\|[!$&"'*+,./0:;<>?@\`~_]\|\w\+\)"
 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}\|\\\=\S\)" contained display
+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 rubyParenthesesEscape	   "\\[()]"  contained display
-syn match rubyCurlyBracesEscape	   "\\[{}]"  contained display
-syn match rubyAngleBracketsEscape  "\\[<>]"  contained display
-syn match rubySquareBracketsEscape "\\[[\]]" 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="\\\\\|\\)"  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
 
-syn cluster rubySingleCharEscape contains=rubyBackslashEscape,rubyQuoteEscape,rubySpaceEscape,rubyParenthesesEscape,rubyCurlyBracesEscape,rubyAngleBracketsEscape,rubySquareBracketsEscape
+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
@@ -153,20 +152,20 @@ 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\|[]})\"']\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\+\)*\)i\=\>" display
+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 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 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]\)*\|-.\)"
@@ -195,7 +194,7 @@ 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\|FALSE\|NIL\|STDERR\|STDIN\|STDOUT\|TOPLEVEL_BINDING\|TRUE\)\>\%(\s*(\)\@!"
+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
@@ -203,12 +202,14 @@ 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\k*\s\+\)\@<=/\%([ \t=]\|$\)\@!"										   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
@@ -219,8 +220,8 @@ SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%
 SynFold '%' syn region rubyRegexp matchgroup=rubyPercentRegexpDelimiter start="%r\z(\s\)"			   end="\z1[iomxneus]*" skip="\\\\\|\\\z1" contains=@rubyRegexpSpecial
 
 " Characters {{{1
-syn match rubyCharacter "\%(\w\|[]})\"'/]\)\@1<!\%(?\%(\\M-\\C-\|\\C-\\M-\|\\M-\\c\|\\c\\M-\|\\c\|\\C-\|\\M-\)\=\%(\\\o\{1,3}\|\\x\x\{1,2}\|\\\=\S\)\)"
-syn match rubyCharacter "\%(\w\|[]})\"'/]\)\@1<!?\\u\%(\x\{4}\|{\x\{1,6}}\)"
+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' : ''
@@ -259,29 +260,29 @@ endfor
 unlet s:delimiter s:group s:names
 " }}}2
 
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q{"	  end="}"   skip="\\\\\|\\}"   contains=rubyBackslashEscape,rubyCurlyBracesEscape,rubyNestedCurlyBraces
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q<"	  end=">"   skip="\\\\\|\\>"   contains=rubyBackslashEscape,rubyAngleBracketsEscape,rubyNestedAngleBrackets
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q\["	  end="\]"  skip="\\\\\|\\\]"  contains=rubyBackslashEscape,rubySquareBracketsEscape,rubyNestedSquareBrackets
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%q("	  end=")"   skip="\\\\\|\\)"   contains=rubyBackslashEscape,rubyParenthesesEscape,rubyNestedParentheses
+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,rubyCurlyBracesEscape,rubyNestedCurlyBraces
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w<"	  end=">"   skip="\\\\\|\\>"   contains=rubyBackslashEscape,rubySpaceEscape,rubyAngleBracketsEscape,rubyNestedAngleBrackets
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w\["	  end="\]"  skip="\\\\\|\\\]"  contains=rubyBackslashEscape,rubySpaceEscape,rubySquareBracketsEscape,rubyNestedSquareBrackets
-SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%w("	  end=")"   skip="\\\\\|\\)"   contains=rubyBackslashEscape,rubySpaceEscape,rubyParenthesesEscape,rubyNestedParentheses
+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,rubyCurlyBracesEscape,rubyNestedCurlyBraces
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s<"	  end=">"   skip="\\\\\|\\>"   contains=rubyBackslashEscape,rubyAngleBracketsEscape,rubyNestedAngleBrackets
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s\["	  end="\]"  skip="\\\\\|\\\]"  contains=rubyBackslashEscape,rubySquareBracketsEscape,rubyNestedSquareBrackets
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%s("	  end=")"   skip="\\\\\|\\)"   contains=rubyBackslashEscape,rubyParenthesesEscape,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,rubyCurlyBracesEscape,rubyNestedCurlyBraces
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i<"	  end=">"   skip="\\\\\|\\>"   contains=rubyBackslashEscape,rubySpaceEscape,rubyAngleBracketsEscape,rubyNestedAngleBrackets
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i\["	  end="\]"  skip="\\\\\|\\\]"  contains=rubyBackslashEscape,rubySpaceEscape,rubySquareBracketsEscape,rubyNestedSquareBrackets
-SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%i("	  end=")"   skip="\\\\\|\\)"   contains=rubyBackslashEscape,rubySpaceEscape,rubyParenthesesEscape,rubyNestedParentheses
+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, Symbols, Array of Strings, Array of Symbols and Shell Command Output {{{1
+" Generalized Double Quoted Strings, Array of Strings, Array of Symbols and Shell Command Output {{{1
 " Note: %= is not matched here as the beginning of a double quoted string
 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
@@ -291,7 +292,6 @@ SynFold '%' syn region rubyString matchgroup=rubyPercentStringDelimiter start="%
 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
 
-" Array of interpolated Symbols
 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
@@ -299,15 +299,15 @@ SynFold '%' syn region rubySymbol matchgroup=rubyPercentSymbolDelimiter start="%
 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
+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+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
@@ -321,8 +321,8 @@ syn match rubyMethodDeclaration "[^[:space:];#(]\+"   contained contains=rubyCon
 syn match rubyClassDeclaration	"[^[:space:];#<]\+"   contained contains=rubyClassName,rubyOperator
 syn match rubyModuleDeclaration "[^[:space:];#<]\+"   contained contains=rubyModuleName,rubyOperator
 
-syn match rubyMethodName "\<[_[:alpha:]][_[:alnum:]]*[?!=]\=[[:alnum:]_.:?!=]\@!"										      contained containedin=rubyMethodDeclaration
-syn match rubyMethodName "\%(\s\|^\)\@1<=[_[:alpha:]][_[:alnum:]]*[?!=]\=\%(\s\|$\)\@="										      contained containedin=rubyAliasDeclaration,rubyAliasDeclaration2
+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,rubyBlockParameter
@@ -330,12 +330,12 @@ syn cluster rubyDeclaration contains=rubyAliasDeclaration,rubyAliasDeclaration2,
 " 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\|retry\|return\)\>[?!]\@!"
-syn match rubyOperator	     "\<defined?" display
-syn match rubyKeyword	     "\<\%(super\|yield\)\>[?!]\@!"
+syn match rubyControl	     "\<\%(and\|break\|in\|next\|not\|or\|redo\|retry\|return\)\>"
+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\)\>[?!]\@!"
+syn match rubyPseudoVariable "\<\(self\|nil\)\>[?!]\@!"
+syn match rubyPseudoVariable "\<__\%(ENCODING\|dir\|FILE\|LINE\|callee\|method\)__\>"
+syn match rubyBeginEnd	     "\<\%(BEGIN\|END\)\>"
 
 " Expensive Mode {{{1
 " Match 'end' with the appropriate opening keyword for syntax based folding
@@ -362,26 +362,26 @@ if !exists("b:ruby_no_expensive") && !exists("ruby_no_expensive")
   SynFold 'do' syn region rubyDoBlock matchgroup=rubyControl start="\<do\>" 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\|[\]})]\)\@<!\[" end="]" contains=ALLBUT,@rubyNotTop
+  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\>" end="\<end\>" contains=ALLBUT,@rubyNotTop
   SynFold 'case'  syn region rubyCaseExpression  matchgroup=rubyConditional start="\<case\>"  end="\<end\>" contains=ALLBUT,@rubyNotTop
 
-  SynFold 'if' syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\<then\s\|\%(\<\h\w*\)\@<![?!]\)\s*\)\@<=\%(if\|unless\)\>" end="\%(\%(\%(\.\@1<!\.\)\|::\)\s*\)\@<!\<end\>" contains=ALLBUT,@rubyNotTop
+  SynFold 'if' syn region rubyConditionalExpression matchgroup=rubyConditional start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\<then\s\|\%(\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\@<![?!]\)\s*\)\@<=\%(if\|unless\)\>" end="\%(\%(\%(\.\@1<!\.\)\|::\)\s*\)\@<!\<end\>" contains=ALLBUT,@rubyNotTop
 
-  syn match rubyConditional "\<\%(then\|else\|when\)\>[?!]\@!"	contained containedin=rubyCaseExpression
-  syn match rubyConditional "\<\%(then\|else\|elsif\)\>[?!]\@!" contained containedin=rubyConditionalExpression
+  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   rubyExceptionHandler1 "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>[?!]\@!" contained containedin=rubyModuleBlock,rubyClassBlock,rubyMethodBlock
+  syn match   rubyExceptionHandler  "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>" contained containedin=rubyBlockExpression,rubyDoBlock
+  syn match   rubyExceptionHandler1 "\<\%(\%(\%(;\|^\)\s*\)\@<=rescue\|else\|ensure\)\>" contained containedin=rubyModuleBlock,rubyClassBlock,rubyMethodBlock
   syn cluster rubyExceptionHandler  contains=rubyExceptionHandler,rubyExceptionHandler1
 
   " statements with optional 'do'
-  syn region rubyOptionalDoLine matchgroup=rubyRepeat start="\<for\>[?!]\@!" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\%(\<\h\w*\)\@<![!?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyOptionalDo end="\<do\>" end="\ze\%(;\|$\)" oneline contains=ALLBUT,@rubyNotTop
+  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\w*\)\@<![!?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyRepeat end="\<end\>" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine
+  SynFold 'for' syn region rubyRepeatExpression start="\<for\>" start="\%(\%(^\|\.\.\.\=\|[{:,;([<>~\*/%&^|+=-]\|\%(\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*\)\@<![!?]\)\s*\)\@<=\<\%(until\|while\)\>" matchgroup=rubyRepeat end="\<end\>" contains=ALLBUT,@rubyNotTop nextgroup=rubyOptionalDoLine
 
   if !exists("ruby_minlines")
     let ruby_minlines = 500
@@ -389,28 +389,28 @@ if !exists("b:ruby_no_expensive") && !exists("ruby_no_expensive")
   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\)\>[?!]\@!"
+  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 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
+  syn match rubyAccess	  "\<\%(public\|protected\|private\)\>"
+  syn match rubyAccess	  "\<\%(public_class_method\|private_class_method\)\>"
+  syn match rubyAccess	  "\<\%(public_constant\|private_constant\)\>"
+  syn match rubyAccess	  "\<module_function\>"
+  syn match rubyAttribute "\%(\%(^\|;\)\s*\)\@<=attr\>\(\s*[.=]\)\@!" " attr is a common variable name
+  syn match rubyAttribute "\<\%(attr_accessor\|attr_reader\|attr_writer\)\>"
+  syn match rubyControl   "\<\%(abort\|at_exit\|exit\|fork\|loop\|trap\)\>"
+  syn match rubyEval	  "\<\%(eval\|class_eval\|instance_eval\|module_eval\)\>"
+  syn match rubyException "\<\%(raise\|fail\|catch\|throw\)\>"
+  syn match rubyInclude   "\<\%(autoload\|gem\|load\|require\|require_relative\)\>"
+  syn match rubyKeyword   "\<\%(callcc\|caller\|lambda\|proc\)\>"
+  syn match rubyMacro	  "\<\%(extend\|include\|prepend\|refine\|using\)\>"
+  syn match rubyMacro	  "\<\%(alias_method\|define_method\|define_singleton_method\|remove_method\|undef_method\)\>"
 endif
 
 " Comments and Documentation {{{1
@@ -431,19 +431,25 @@ else
   syn region rubyDocumentation	  start="^=begin\s*$"		 end="^=end\s*$"              contains=rubySpaceError,rubyTodo,@Spell
 endif
 
-" {{{1 Useless line continuations
-syn match rubyUselessLineContinuation "\%([.:,;{([<>~\*%&^|+=-]\|\w\@1<![?!]\)\s*\zs\\$" nextgroup=rubyUselessLineContinuation skipwhite skipempty
-syn match rubyUselessLineContinuation "\\$"						 nextgroup=rubyUselessLineContinuation skipwhite skipempty contained
+" {{{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
-" 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
+" prevent methods with keyword names (and possible ?! suffixes) being highlighted as keywords when called
+syn match rubyKeywordAsMethod "\%(\%(\.\@1<!\.\)\|&\.\|::\)\_s*\%([_[:lower:]][_[:alnum:]]*\|\%(BEGIN\|END\)\>\)" transparent contains=rubyDotOperator,rubyScopeOperator
+syn match rubyKeywordAsMethod "\<[_[:lower:]][_[:alnum:]]*[?!]"							  transparent contains=NONE
+
+" Bang/Predicate Special Methods and Operators {{{1
+if !exists("ruby_no_special_methods")
+  syn match rubyControl "\<exit!" display
+endif
+syn match rubyOperator "\<defined?" display
 
 " More Symbols {{{1
-syn match rubySymbol "\%([{(,]\_s*\)\@<=\l\w*[!?]\=::\@!"he=e-1
+syn match rubySymbol "\%([{(,]\_s*\)\@<=\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[?!=]\=::\@!"he=e-1
 syn match rubySymbol "[]})\"':]\@1<!\<\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[!?]\=:[[:space:],]\@="he=e-1
-syn match rubySymbol "\%([{(,]\_s*\)\@<=[[:space:],{]\l\w*[!?]\=::\@!"hs=s+1,he=e-1
+syn match rubySymbol "\%([{(,]\_s*\)\@<=[[:space:],{]\%(\h\|[^\x00-\x7F]\)\%(\w\|[^\x00-\x7F]\)*[?!=]\=::\@!"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
@@ -518,10 +524,10 @@ hi def link rubyTodo			Todo
 hi def link rubyBackslashEscape		rubyStringEscape
 hi def link rubyQuoteEscape		rubyStringEscape
 hi def link rubySpaceEscape		rubyStringEscape
-hi def link rubyParenthesesEscape	rubyStringEscape
-hi def link rubyCurlyBracesEscape	rubyStringEscape
-hi def link rubyAngleBracketsEscape	rubyStringEscape
-hi def link rubySquareBracketsEscape	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