Re: diffs in changelogs

[Andrew Morton]

On Thu, 11 Jun 2015 20:12:59 -0700 Joe Perches <joe@xxxxxxxxxxx> wrote:

> On Thu, 2015-06-11 at 13:40 -0700, Andrew Morton wrote:
> > People often put diff snippets in changelogs.  This causes problems
> > when one tries to apply a file containing both the changelog and the
> > diff because patch(1) tries to apply the diff which it found in the
> > changelog.
> That 
> > eg, something like
> > 
> > 	git show d24a6e1087030b6da | patch -p1
> > 
> > will go haywire.
> > 
> > So can we please have a checkpatch test warning people away from doing
> > this?
> > 
> > 
> > patch(1) seems to be really promiscuous in its detection of a patch.  I
> > haven't had much success searching for "^--- " and similar.  What works
> > best for me is searching for "^[whitespace]@@ -".
> 
> I don't think that's a good test.
> Coccinelle uses @@
> 
> And how did that commit actually get applied?

Good question.  Maybe `git apply' is smarter about this than patch(1)?

> I tried applying it to a new branch checked out at
> ce2b3f595e1c56639085645e0130426e443008c0, it fails.

There are tons of them:

z:/usr/src/git26> git log | grep "^[    ]*@@ -"  | wc -l
120

> Anyway, maybe:

Looks good, thanks.  -ENOCHANGELOG.  Please send it for real when convenient.


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