[PATCH] tests: make a long running test responsive to Ctrl-C

[Pádraig Brady]

* tests/misc/sort-compress-hang.sh: Use --foreground with the
timeout(1) command (noting the caveats), to run the sort command
in the foreground program group, and thus be responsive to Ctrl-C.
This very_expensive_ test takes over a minute on a i3-2310M,
with RAM backed /tmp.
---
 tests/misc/sort-compress-hang.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/misc/sort-compress-hang.sh b/tests/misc/sort-compress-hang.sh
index dc101fe..4013d12 100755
--- a/tests/misc/sort-compress-hang.sh
+++ b/tests/misc/sort-compress-hang.sh
@@ -35,7 +35,11 @@ tac exp > in || fail=1
 # 'sort' could be running slowly on an overburdened machine.
 # On a circa-2010 Linux server using NFS, a successful test completes
 # in about 170 seconds, so specify 1700 seconds as a safety margin.
-timeout 1700 sort --compress-program=./compress -S 1k in > out || fail=1
+# Note --foreground will not kill any of the "compress" sub processes,
+# assuming they're well beahved and exit in a timely manner, but will
+# allow this command to be responsive to Ctrl-C
+timeout --foreground 1700 sort --compress-program=./compress -S 1k in > out \
+  || fail=1
 
 compare exp out || fail=1
 test -f ok || fail=1
-- 
2.5.0