Ruby » Ruby master

• parse.y (parser_tokadd_string): insert a backslash only if
  quoted by single quotes. [ruby-dev:45281] [Bug #6069]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34796 b2dd03c8-39d4-4d8f-98ff-823fe69b080e