On Mon, Dec 18, 2017 at 11:43 AM, Seth Raymond <seth.c.raymond@xxxxxxxxx> wrote: > If a commit is invoked with -F <file>, indicating that the commit > message should be read from an existing file, the the > prepare-commit-msg and commit-msg hooks do not operate on <file>. The > first argument to the hook is always <git_repo>/COMMIT_EDITMSG, rather > than <file>. > > Am I wrong in this line of thinking? The content of <file> gets copied into COMMIT_EDITMSG, so the hook does see the supplied message, as expected. Given that the hook is allowed to edit the message, it makes sense that it works on COMMIT_EDITMSG rather than on <file> directly.