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Re:Oh shit, git: Getting myself out of bad situations by deragent on Monday December 18, 2017 @12:21PM (#15953290)
Within 'git add -p' when you get to the hunk that you want to edit (split down to single lines), press 'e'. This will open an editor (vim in my case) which lets you edit the diff manually.

In there you can remove added lines (prefixed by '+') by removing them, and re-adding removed lines (prefixed by '-') by replacing the '-' with a space ' '.

Re:Oh shit, git: Getting myself out of bad situations by tigershark on Monday December 18, 2017 @02:48PM (#15954811)
And how is this faster/better than selecting a line with the mouse and pressing s without opening any other editor?
Re:Oh shit, git: Getting myself out of bad situations by RandomException on Monday December 18, 2017 @03:04PM (#15954953)
Do it in Vim (or emacs for those weirdos out there) and you're done before you would've even reached the mouse :)
Re:Oh shit, git: Getting myself out of bad situations by gknoy on Monday December 18, 2017 @06:18PM (#15956348)
Sometimes your changes are across multiple files, and it's easier to say, "yes, yes, yes, yes, split, no, no, yes, ..."