parse.y: bit field lex_state
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37338 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
parse.y: bit field lex_state
IS_lex_state() macro. based on the patch by Dave B in
[ruby-core:23503]. [Feature #1493]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37338 b2dd03c8-39d4-4d8f-98ff-823fe69b080e