Re: [tip:perf/urgent] perf/core: Fix lock inversion between perf,trace,cpuhp

[Linus Torvalds]

On Wed, Jan 24, 2018 at 7:32 AM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> Oh, the '#' was probably interpreted as a comment when I applied it ...

Indeed. That's a subtle gotcha when you cut-and-paste things into the
editor when editing a commit message (including the "git rebase -i" or
"git commit --amend" kind of editing).

If you just apply it as an email, the hash-marks at the beginning of
lines are not seen as comments - it's literally just the editing part
that uses them as comments.

I'm afraid this isn't really a git "bug". But it _is_ subtle and unlucky.

Note that only a hash-mark in the first column is seen as a comment
(unlike, say, shell programming), so you can avoid it with spacing. If
you quote code with #ifdef etc, indent it.

Maybe git should have used a different comment scheme, but I have to
admit that I think this is the first time I've heard of this issue
causing problems in practice. I'm sure it's triggered before, and
nobody has noticed (or I wasn't on the cc).

So the '#' thing _normally_ works, but yes, it can cause issues.

                   Linus