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Title: Fix diff parsing to support mnemonicPrefix configuration by MirrorDNA-Reflection-Protocol · Pull Request #2092 · gitpython-developers/GitPython · GitHub

Open Graph Title: Fix diff parsing to support mnemonicPrefix configuration by MirrorDNA-Reflection-Protocol · Pull Request #2092 · gitpython-developers/GitPython

X Title: Fix diff parsing to support mnemonicPrefix configuration by MirrorDNA-Reflection-Protocol · Pull Request #2092 · gitpython-developers/GitPython

Description: Summary Fixes #2013 When diff.mnemonicPrefix=true is set in git config, git uses different prefixes for diff paths instead of the standard a/ and b/: c/ for commit w/ for worktree i/ for index o/ for object h/ for HEAD Previously, the diff regex and decode_path() function only accepted a/ and b/ prefixes, causing create_patch=True diffs to fail parsing when users had this config enabled. Reproduction As described in #2013: # With ~/.gitconfig containing: # [diff] # mnemonicPrefix = true repo = git.Repo('.') ancestor_ref = repo.merge_base(repo.head, repo.refs['main']) diff = ancestor_ref[0].diff(None, create_patch=True) # Would fail to parse Changes Update re_header regex to accept [abciwoh]/ prefixes instead of just [ab]/ Update decode_path() assertion to accept all valid mnemonic prefixes Add test case for mnemonicPrefix-style diffs Testing New test test_diff_mnemonic_prefix verifies parsing works with c/ and w/ prefixes All existing diff tests pass (except one pre-existing failure on main unrelated to this change) References Git documentation: https://git-scm.com/docs/git-config#Documentation/git-config.txt-diffmnemonicPrefix Issue: #2013

Open Graph Description: Summary Fixes #2013 When diff.mnemonicPrefix=true is set in git config, git uses different prefixes for diff paths instead of the standard a/ and b/: c/ for commit w/ for worktree i/ for index o/ ...

X Description: Summary Fixes #2013 When diff.mnemonicPrefix=true is set in git config, git uses different prefixes for diff paths instead of the standard a/ and b/: c/ for commit w/ for worktree i/ for index o/ ...

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6ef056f Fix diff parsing to support mnemonicPrefix configuration MirrorDNA-Reflection-Protocol Dec 7, 2025 https://github.com/gitpython-developers/GitPython/pull/2092/commits/6ef056f842fe7a302ae7bf7f332eec60802929ea
6e77e26 Fix lint and mypy errors MirrorDNA-Reflection-Protocol Dec 8, 2025 https://github.com/gitpython-developers/GitPython/pull/2092/commits/6e77e26096ec3a2e8f204e2b1b10a068181537ce
4aeaf56 Address review feedback: improve test coverage for all mnemonicPrefix… MirrorDNA-Reflection-Protocol Dec 9, 2025 https://github.com/gitpython-developers/GitPython/pull/2092/commits/4aeaf56f8211fb6c307a465d857025d4994adc2b
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