Line numbers?

Hi!

Not sure if I missed something, or there is some technical limitation here, but if not, can I add a feature request for line numbers?

My use case is, that we have some coffee files in our app, that in the production environment are compiled to js, so when code dies for some reason there we get the js line number in the error stack. (Yes, I'm aware that it could show the coffee line number with source map, but currently it doesn't.) So whenever this happens, I open the js of the coffee in preview in atom, then copy the whole source to a new buffer so I can see line numbers, so I can get where the error happened.

The issue names no files or tests. Start by locating the Atom preview rendering entry point and checking how compiled JavaScript is displayed; done means the preview visibly includes line numbers for the source being inspected.

Written by the indexing model from the issue text.