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Title: Add trailer support for commit creation by Krishnachaitanyakc · Pull Request #2116 · gitpython-developers/GitPython · GitHub

Open Graph Title: Add trailer support for commit creation by Krishnachaitanyakc · Pull Request #2116 · gitpython-developers/GitPython

X Title: Add trailer support for commit creation by Krishnachaitanyakc · Pull Request #2116 · gitpython-developers/GitPython

Description: Summary Adds a trailers parameter to Commit.create_from_tree() and IndexFile.commit() enabling trailer creation (e.g. Signed-off-by, Issue) when committing programmatically Accepts either a dict or a list of (key, value) tuples (for duplicate keys like multiple Signed-off-by) Uses git interpret-trailers for formatting, consistent with existing trailer parsing in Commit.trailers_list Closes #1998 Motivation GitPython already supports parsing trailers from existing commits, but did not support adding them when creating new commits. The git commit CLI supports this via --trailer, e.g.: git commit --message "Did a thing" --trailer "Issue: abc" This change brings equivalent functionality to GitPython's Python API. Usage # Using a dict repo.index.commit("Fix bug", trailers={"Issue": "123"}) # Using a list of tuples (for duplicate keys) repo.index.commit("Fix bug", trailers=[ ("Signed-off-by", "Alice "), ("Signed-off-by", "Bob "), ]) # Via Commit.create_from_tree directly Commit.create_from_tree(repo, tree, "Fix bug", trailers={"Reviewed-by": "Eve"}) Test plan test_create_from_tree_with_trailers_dict - verifies dict-based trailer creation and round-trip parsing test_create_from_tree_with_trailers_list - verifies list-of-tuples trailer creation with duplicate keys test_index_commit_with_trailers - verifies IndexFile.commit() passes trailers through correctly All 3 new tests pass locally

Open Graph Description: Summary Adds a trailers parameter to Commit.create_from_tree() and IndexFile.commit() enabling trailer creation (e.g. Signed-off-by, Issue) when committing programmatically Accepts either a dict o...

X Description: Summary Adds a trailers parameter to Commit.create_from_tree() and IndexFile.commit() enabling trailer creation (e.g. Signed-off-by, Issue) when committing programmatically Accepts either a dict o...

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7c5fbc6 Add trailer support for commit creation Krishnachaitanyakc Mar 25, 2026 https://github.com/gitpython-developers/GitPython/pull/2116/commits/7c5fbc6a95c012e5e70625b78a2e7097c0659fa5
af0933c Use configured git executable and finalize process for trailer creation Krishnachaitanyakc Apr 6, 2026 https://github.com/gitpython-developers/GitPython/pull/2116/commits/af0933cadc14f0df7a3463b655793d59cd586c46
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