[PATCH] manual: Document the standardized scanf flag, "m". [BZ #16376]

[Andreas Schwab]

On Feb 06 2018, Rical Jasan <ricaljasan@pacific.net> wrote:

> Looking in stdio-common/vfscanf.c, "a" uses GNU_MALLOC, and "m" uses
> POSIX_MALLOC, and there is a MALLOC which is defined to either, and
> throughout the code there are several conditionals where POSIX_MALLOC is
> nested beneath MALLOC (GNU_MALLOC is always MALLOC), but I'm not sure we
> want to document any internal implementation differences (if they're
> even significant).  The existing documentation wasn't very detailed
> itself, but I still wanted to mention it.

IMHO the "a" modifier should be marked as deprecated, since it conflicts
with the %a format.  I think it would be enough to mention it in a
paragraph, but nowhere else.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."