Add tests for error line numbers in Sass.
Add tests for error line numbers in Sass.

This exposes a bug.

uniba/hamldoc_ja,DanteKaris/sass,amitsuroliya/sass,MetaAshley/sass,oss-practice/sass,saper/sass,nazar-pc/haml,Galactix/sass,srinivashappy/sass,haml/haml,cmpereirasi/sass,tenderlove/sass,keithpitty/haml,stefanpenner/haml,stewx/sass,Andrey-Pavlov/sass,Andrey-Pavlov/sass,xzyfer/sass,Iamronan/sass,concord-consortium/haml,dg1dd1ngs/haml,haml/haml,StephanieMak/sass,nazar-pc/haml,modulexcite/sass,14113/sass,danielfein/sass,vio/haml,PMArtz92/sass,Industrys/sass,lmetla/sass,chriseppstein/haml,Ahnita/sass,baiyanghese/sass,nicklima/sass,rammy7219/sass,cmpereirasi/sass,schneems/sass,haml/haml,jaroot32/sass,HugoRLopes/sass,ridixcr/sass,rammy7219/sass,antonifs/sass,xzyfer/sass,amatsuda/haml,macressler/haml,Industrys/sass,srinivashappy/sass,keithpitty/haml,ridixcr/sass,antonifs/sass,sideci-sample/sideci-sample-haml,Galactix/sass,mislav/haml,nicklima/sass,srawlins/sass,Ahnita/sass,OrenBochman/sass,DanteKaris/sass,stewx/sass,srawlins/sass,macressler/haml,HugoRLopes/sass,hcatlin/sass,Anshdesire/sass,zaru/sass,MetaAshley/sass,tangposmarvin/sass,askl56/sass,saper/sass,StephanieMak/sass,stanhu/haml,OrenBochman/sass,tangposmarvin/sass,jaroot32/sass,nickg33/sass,dg1dd1ngs/haml,chriseppstein/haml,schneems/sass,stanhu/haml,Nzaga/sass,JuanitoFatas/sass,dylannnn/sass,hcatlin/sass,askl56/sass,zaru/sass,Iamronan/sass,purcell/haml,JuanitoFatas/sass,tangposmarvin/haml,Anshdesire/sass,Nzaga/sass,briangonzalez/sass,lmetla/sass,liquidmetal/sass,haml/haml,amitsuroliya/sass,danielfein/sass,PMArtz92/sass,chriseppstein/sass,dylannnn/sass,liquidmetal/sass,nickg33/sass,modulexcite/sass,tangposmarvin/haml