[PATCH] D24319: clang-format: Add a flag to limit git-clang-format's diff to a single commit

[Luis Héctor Chávez via cfe-commits]

lhchavez created this revision.
lhchavez added a reviewer: djasper.
lhchavez added subscribers: srhines, cfe-commits.
lhchavez set the repository for this revision to rL LLVM.
lhchavez added a project: clang-c.

When building pre-upload hooks using git-clang-format, it is useful to limit the scope to a single commit (instead of from a commit against the working tree) to allow for less false positives in dependent commits.

This change adds a flag (--single-commit) to git-clang-format, which uses a different strategy to diff (using git-diff-tree instead of git-diff-index) and create the temporary working tree (using the git hashes of the objects present in the specified commit instead of the ones found in the current working directory).

Repository:
  rL LLVM

https://reviews.llvm.org/D24319

Files:
  cfe/trunk/tools/clang-format/git-clang-format

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