remove some x strings, esp. with parser, print errors
remove some x strings, esp. with parser, print errors

SophieDeBenedetto/opal-irb,fkchang/opal-irb,fkchang/opal-irb,SophieDeBenedetto/opal-irb,SophieDeBenedetto/opal-irb,fkchang/opal-irb