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tpopetpope
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Don't match $_foo as invalid variable
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‎ChangeLog‎

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@@ -1,3 +1,7 @@
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2008-06-29 Tim Pope <vim@tpope.info>
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* syntax/ruby.vim: don't match $_foo as an invalid variable
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2008-04-25 Tim Pope <vim@tpope.info>
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* ftplugin/eruby.vim, syntax/eruby.vim: guard against recursion

‎syntax/ruby.vim‎

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@@ -107,7 +107,7 @@ syn region rubySymbol start="[]})\"':]\@<!:\"" end="\"" skip="\\\\\|\\\"" cont
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syn match rubyBlockParameter "\h\w*" contained
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syn region rubyBlockParameterList start="\%(\%(\<do\>\|{\)\s*\)\@<=|" end="|" oneline display contains=rubyBlockParameter
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syn match rubyInvalidVariable "$[^ A-Za-z-]"
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syn match rubyInvalidVariable "$[^ A-Za-z_-]"
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syn match rubyPredefinedVariable #$[!$&"'*+,./0:;<=>?@\`~1-9]#
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syn match rubyPredefinedVariable "$_\>" display
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syn match rubyPredefinedVariable "$-[0FIKadilpvw]\>" display

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