Commit message not helpful after merge squash with conflicts

Hi,

after a "git merge --squash" with a conflict the commit message is not helpful as it only includes the conflicted files information, however, I expect to see the content of SQUASH_MSG which contains the summary of the merged commits. SQUASH_MSG seems to be just ignored.

I think git should either read SQUASH_MSG and append COMMIT_MSG or add the conflict information into SQUASH_MSG and create no COMMIT_MSG.

References:
 *
https://stackoverflow.com/questions/3605385/merge-conflicts-ruin-my-commit-message-while-squashing-commits
 * https://gitlab.com/tortoisegit/tortoisegit/issues/1902