Re: [RFC/PATCH] dontdiff: generate from gitignore

[Linus Torvalds]

On Fri, 12 Sep 2008, Randy Dunlap wrote:
> 
> Generate the "dontdiff" file from the .gitignore files.

t's not quite as simple as that, though.

The .gitignore files are fundamentally location hierarchy-aware, so a 
ignore entry in one subdirectory only affects that subdirectory 
(recursively), so if you flatten then, you should take that into account.

As far as I can tell, your script will generate lots of incorrect entries 
due to this. Eg, it will generate

	parse.[ch]

as a dontdiff pattern, because scripts/genksyms/.gitignore has that, but 
that means that now it will ignore parse.c in all the _other_ places, 
where it *isn't* a generated file (ie mm/parse.c).

		Linus
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