Jeff King <peff@xxxxxxxx> writes: > On Tue, Aug 04, 2020 at 08:50:16PM +0300, Sergey Organov wrote: > >> Attached is rather minimal incompatible change to --diff-merges that'd >> allow extensions in the future, to get out of urge for the discussed >> changes. I'm going to follow-up with actual improvements and I'm aware >> it lacks documentation changes. > > Thanks, I like the direction here. Definitely it would need > documentation, but also tests (probably in t4013 alongside the ones my > series added; in fact you'd probably need to adjust my tests for the > non-optional argument). I turned to tests, and found that I have a doubt about the test you've added: git log --no-diff-merges -p --first-parent master In modified tests, I'd like to move --no-diff-merges to the end, for the test to be less restrictive: git log -p --first-parent --no-diff-merges master It should change nothing for now, but it will allow us in the future to get rid of mutual dependencies between in -m and --first-parent in favor of --first-parent to imply --diff-merges=1. We then will need to override the latter by subsequent --no-diff-merges: git log -p --first-parent [--diff-merges=1: implied] --no-diff-merges master In this case your original test: git log --no-diff-merges -p --first-parent [--diff-merges=1: implied] master would fail, as implied --diff-merges=1 then wins. Then I'm going to add a copy: git log -p --first-parent --diff-merges=off master to check that this form works as well. What do you think? Thanks, -- Sergey