Highlight {'a': 1, "b": 2} keys as symbols

tpope · tpope · commit 74158d2a39d9 · 2021-07-06T18:50:25.000-04:00
Resolves: #434
diff --git a/syntax/ruby.vim b/syntax/ruby.vim
@@ -464,6 +464,10 @@ syn match rubyDefinedOperator "\%#=1\<defined?" display
 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__$" end="\%$"
@@ -564,6 +568,8 @@ 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
