I had a similar experience where I tried to declare bankruptcy after havning not used emacs for a year and a half or so, ended up re-implementing things until finally I was like 'no I was right the first time'.
That said, damn, my emacs config is like 1000 LOC and takes like 20 seconds to load. Also the reason I keep leaving Emacs is definitely the complexity of the bugs and the edge-of-the-edge case things that come up when I'm just trying to do something simple (the other day it crashed after running `e: newfile`, the evil mode command for editing a new file. I have no idea why it crashed but after it did the program couldn't be killed. Maybe it was because I was trying to open a file with no extension, but even that's a stretch.
Anyway would you mind if I sent you my config sometime or looked at yours? It's never occurred to me to write regression tests
That said, damn, my emacs config is like 1000 LOC and takes like 20 seconds to load. Also the reason I keep leaving Emacs is definitely the complexity of the bugs and the edge-of-the-edge case things that come up when I'm just trying to do something simple (the other day it crashed after running `e: newfile`, the evil mode command for editing a new file. I have no idea why it crashed but after it did the program couldn't be killed. Maybe it was because I was trying to open a file with no extension, but even that's a stretch.
Anyway would you mind if I sent you my config sometime or looked at yours? It's never occurred to me to write regression tests