Ensure lines are integers before using them as strings [Fixes #872]
Ensure lines are integers before using them as strings [Fixes #872]

The problem was that they could be Rational's if the mathn library was
required.

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