On Git: If You Merge to Master with Squash What's a Good Way to Check If an Old Branch Was Already Merged or Not?
When using git merge --squash, the commit history of the merged branch is not preserved in the target branch. This can make it difficult to determine if an old branch was already merged or not.
One way to check if an old branch was already merged is to use the git log command with the --first-parent option. This option will only show the first parent of each commit, which is the commit that was merged into the target branch. If the old branch was already merged, its last commit will not be shown in the output of git log --first-parent.
Another way to check if an old branch was already merged is to use the git branch -d command. This command will attempt to delete the specified branch. If the branch has already been merged, the command will succeed. If the branch has not been merged, the command will fail with an error message.
Related Questions and Answers
- How do I merge a branch into master with squash?
Use the
git merge --squashcommand. - What is the difference between merging with squash and merging without squash? Merging with squash collapses the history of the merged branch into a single commit, while merging without squash preserves the history of the merged branch.
- How do I check if a branch is already merged into master?
Use the
git log --first-parentorgit branch -dcommands. - What is the purpose of the
--first-parentoption? It excludes merge commits from the output ofgit log. - What is the purpose of the
git branch -dcommand? It deletes the specified branch if it has been merged.
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