A few days ago I wrote a quick patch and missed a dumb mistake that made the
program crash. When reviewing the merge request on Salsa, the problem became
immediately apparent; Gitlab's diff is much better than what git diff shows by
default in a terminal.
Well, it turns out since version 2.9, git bundles a better pager,
diff-highlight. À la Gitlab, it will highlight what changed in the line.
Sadly, even though diff-highlight comes with the git package in Debian, it is
not built by default (925288). You will need to:
$ sudo make --directory /usr/share/doc/git/contrib/diff-highlight
You can then add this line to your .gitconfig file:
[core] pager = /usr/share/doc/git/contrib/diff-highlight/diff-highlight | less --tabs=4 -RFX
If you use tig, you'll also need to add this line in your tigrc:
set diff-highlight = /usr/share/doc/git/contrib/diff-highlight/diff-highlight