Say you have 3 sequential lines, but you only want to stage the middle one. You can’t split it into smaller hunks by hitting ‘s’ during ‘git add -p’. I’m sure there’s a way I’m just not familiar with but I just use Sourcetree for this on the rare occasion it occurs.
As mentioned before, manual edits can be made at that point. However I'll add that for this use case, a tool integrated in your editor will often be more adapted to manual staging. I have Tim Pope's vim-fugitive plugin in mind which is a quite wonderful way of using Git.
