git am should ignore something in commit message startswith "[]"?

Question

I have a commit with message like [Hello World]Something.
Then I use git format-patch HEAD~1 to crate a patch.
Content of patch like this:

Subject: [PATCH 1/7] [Hello World] Something.

But after I use git am to apply patch,the commit message became "Something" only,[Hello World] seems lost.
How can I keep content in "[]" after apply patch?

Chambless

Answer 1

git am -k would prevent it from removing content in [] brackets at the beginning of the subject, but that would also keep the [PATCH 1/7] portion. git format-patch also has a -k option which would prevent it from adding that type of content allowing the subject to be preserved through a git format-patch | git am cycle.

Doublecross

Answer 2

I had the same concern and found the solution in the link below:

http://git.661346.n2.nabble.com/Bug-Incorrect-stripping-of-the-PATCH-prefix-in-git-am-td7643405.html

We have to use "am" command with "--keep-non-patch" option. The man page describes as follows:

$ man git am

   --keep-non-patch
       Pass -b flag to git mailinfo (see git-mailinfo(1)).

$ man git mailinfo

   -b
       When -k is not in effect, all leading strings bracketed with [ and ] pairs
       are stripped.  This option limits the stripping to only the pairs whose
       bracketed string contains the word "PATCH".

Anzio

Nice. Looks like that was added in git 2.6.0, so wasn't available when I wrote my answer for this. – Doublecross

I could found it based on your answer. Thanks! – Anzio