Re: Implement character sets for sscanf()

[Jessica Yu]

+++ Andy Shevchenko [22/02/16 11:27 +0200]:
> On Fri, 2016-02-19 at 20:20 -0500, Jessica Yu wrote:
> > Hi,
> >
> > This patch adds support for the '%[' conversion specifier for
> > sscanf().
> > Since functions that calculate substring lengths based on accepted or
> > rejected characters already exist in the kernel (namely strspn() and
> > strcspn()), it's not much of a stretch to add some basic support for
> > the
> > bracket '%[' conversion specifier for sscanf(). This is useful in
> > cases
> > where we'd like to match substrings delimited by something other than
> > spaces. The original motivation for this patch actually came from
> > livepatch
> > (https://lkml.org/lkml/2016/2/8/790), where we were trying to come up
> > with
> > a clean way to parse symbol names with substrings delimited by
> > periods and
> > commas.
> >
> > Patch based on linux-next-20160219.
> >
> > Here are some test cases:
>
> Test cases should land into lib/test_scanf.c and be submitted as a
> separate patch.
>
> Also, you have something misconfigured when you sent patches. git-send-
> email usually does a perfect job.

Thanks for the tip. Yeah, I had a small hiccup with git-send-email,
which is why the patchset came out like that :-\ In any case, the
attached test cases are more for the benefit of the patch reviewer,
not something I intended to be merged. For v2, I will just send the
single patch out.

Jessica