hooks/pre-auto-gc-battery: allow gc to run on non-laptops

Desktops and servers tend to have no power sensor, thus on_ac_power returns
255 ("unknown").  Thus, let's take any answer other than 1 ("battery") as
no contraindication to run gc.

If that tool returns "unknown", there's no point in querying other sources
as it already queried them, and is smarter than us (can handle multiple
adapters).

Reported by: Xin Li <delphij@google.com>
Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/hooks/pre-auto-gc-battery b/contrib/hooks/pre-auto-gc-battery
index 6a2cdebdb78c5d9d5a507635f748bda7b2be676d..7ba78c4dff6811d4b60b01ec66882ebcd468df14 100755 (executable)
--- a/contrib/hooks/pre-auto-gc-battery
+++ b/contrib/hooks/pre-auto-gc-battery
@@ -17,7 +17,7 @@
 # ln -sf /usr/share/git-core/contrib/hooks/pre-auto-gc-battery \
 #      hooks/pre-auto-gc
 
-if test -x /sbin/on_ac_power && /sbin/on_ac_power
+if test -x /sbin/on_ac_power && (/sbin/on_ac_power;test $? -ne 1)
 then
        exit 0
 elif test "$(cat /sys/class/power_supply/AC/online 2>/dev/null)" = 1