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| H A D | setlocalversion | diff 7f3bd6c9cb8e9fa2b57bfa860cd3e734a28f48ed Fri Mar 23 17:42:27 CET 2012 Roland Dreier <roland@purestorage.com> setlocalversion: Use "grep -q" instead of piping output to "read dummy"
In some circumstances (eg when running a build in an emacs shell
buffer), I get a spew of messages like
grep: writing output: Broken pipe
from setlocalversion, because the "read" subshell apparently exits as
soon as it reads one line and gives EPIPE to grep. It's not clear to
me why this way of writing the check was used instead of just using
grep -q to suppress output, but unless there is some deep reason I
don't know, this way looks cleaner to me anyway, and gets rid of the
ugly message spew.
(I double checked at http://pubs.opengroup.org/onlinepubs/009604499/utilities/grep.html
and "grep -q" is specified in POSIX / SuS, so hopefully even people
cross-compiling the kernel on some bizarre host OS can't complain
about this change)
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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