Code review comment for lp://qastaging/~evfool/scratch/lp1309291

Hey Robert, your hard work is super appreciated here! Search and replace is working great for me, but replace-all is segfaulting for me. I was editing SourceManager.vala and I tried doing a replace-all for "private" to "public" and I got a segfault. Here's a backtrace: https://gist.githubusercontent.com/aroman/22ef3fddc286c9fe211a/raw/92347518fb1ec01ff4ac77cf5466453995bb3ee1/segfault

I'll try to dig into this later tonight if I can, but i suspect you'll have an easier shot debugging it.