show-patch-diff-for-merge-commits-in-git-log.md

Show patch diff for merge commits in git log

The --patch / -p option for git log prints a diff of changes made by each commit, but this ignores merge commits by default and only shows the merge message not its diff.

Use the -m option to also print merge diffs:

git log -p -m

From the manual:

This flag makes the merge commits show the full diff like regular commits; for each merge parent, a separate log entry and diff is generated. An exception is that only diff against the first parent is shown when --first-parent option is given; in that case, the output represents the changes the merge brought into the then-current branch.