[woodrowbarlow]

yes, VS does this by default too and it's nice.

lots of editors have plugins (like git-gutter for sublime) that do this with VCS integration: highlight lines that were modified since last commit. for me, this is even better because it remains not just after saving the file but even after closing the file/editor and re-opening it.

combined with a minimap like sublime's which also shows the gutter annotations, i can navigate a many-thousand-line file with lightning speed.