merge revision(s) 53214,53215: [Backport #11849]
* parse.y (parser_yylex): allow here documents in labeled argument. [ruby-core:72396] [Bug #11849]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@53258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 53214,53215: [Backport #11849]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@53258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e