[Webkit-unassigned] [Bug 245255] New: [git-webkit] prepare-commit-msg does not work with --reedit-message and --reuse-message

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245255

            Bug ID: 245255
           Summary: [git-webkit] prepare-commit-msg does not work with
                    --reedit-message and --reuse-message
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: emw at apple.com

These git-commit options allow you to use the commit message from a different commit, and optionally stop for editing. They allow you to "rewrite" a commit by resetting to `main`, staging new changes, then running `git commit --reedit-message "HEAD@{1}"` to make changes to the old commit message.

Our prepare-commit-msg hook completely overwrites the commit message staged by these options, making them unusable. It should preserve the original message, and only list modified files in the comment section below the message body.

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