Problems with commit message titles start with #

[yizeng]

I'm facing this obscure issue that with commit message titles start with # (e.g. #16: This is a sample commit for the issue 16)

Behaviours:

Without Overcommit (or after overcommit --uninstall)

• No problems with commit messages start with #

With Overcommit

• With the default Git config
  • Git will clean up and strip the commit title, so it becomes empty
  • Then overcommit rejects it due to EmptyMessage rule (which is the correct behaviour of course)
• With git config --global core.commentchar ';' set
  • Git still cleans up and strips the commit title with #, so it becomes empty again
  • Then overcommit ignores the empty message and doesn't reject the commit (even if EmptyMessage is enabled by default)
• With git config --global commit.cleanup whitespace set
  • Maybe I'm doing something wrong here. Setting git commit.cleanup mode has no effect on anything. The commit message is still gone and overcommit is rejecting the empty message.
• Use git commit -m "#16: This is a sample commit for the issue 16" --cleanup=whitespace
  • Same as above. No effect when it should.