Git gui does not respect core.commentchar

[Si-So]

Unlike regular Git, git gui does not respect the core.commentchar configuration. This issue was introduced here: 1ae85ff

This change affects my workflow because I start every commit message with a ticket number in the following format:

#123456: commit message

With the new behavior, git gui incorrectly treats my ticket number as a comment.

[j6t]

@ossilator Can you please have a look? A fix would be very much appreciated.

[ossilator]

i was hoping i could avoid it. 😇
note that this isn't an entirely trivial exercise, as i pointed out here.