Question

My main aim is to filter out all pull request merges thus in theory i would expect the following to work(it doesn’t)

git log --grep="^!(Merge)"

Do I miss something ?

Answer 1

First, you can’t simply negate a word in a regexp by putting a bang in front of it (where did you find that?). You might have used lookarounds for that, but regular grep regexps do not support them. Using grep directly you can pass -P option to use much more powerful Perl regexps, but I didn’t find similar option for git log.

Though, there is --no-merges option that will filter out all merge commits from the log:

git log --no-merges

Man page says that --no-merges means:

Do not print commits with more than one parent