Fix Regexp warnings on 1.8.7
Fix Regexp warnings on 1.8.7

raeno/pry,josue804/debunker,shockone/pry,scalixte-mdsol/pry,richo/pry,jasonm23/pry,jasonm23/pry,scalixte-mdsol/pry,ngpestelos/pry,nju520/pry,caporta/pry,josue804/debunker,icebreaker/pry,nju520/pry,pvdb/pry,shockone/pry,caporta/pry,ooohiroyukiooo/pry,tdg5/pry,85x14/pry,ngpestelos/pry,bronzdoc/pry,printercu/pry,scalixte-mdsol/pry,icebreaker/pry,raeno/pry,ooohiroyukiooo/pry,deivid-rodriguez/pry,caporta/pry,printercu/pry,sideci-sample/sideci-sample-pry,nju520/pry,jasnow/pry,85x14/pry,geoffreylitt/pry,ooohiroyukiooo/pry,sferik/pry,raeno/pry,sferik/pry,geoffreylitt/pry,shockone/pry,gfvcastro/pry,gfvcastro/pry,jasonm23/pry,bronzdoc/pry,tdg5/pry,85x14/pry,tdg5/pry,jasnow/pry,pvdb/pry,jasnow/pry