t0005: test git exit code from signal death

When a sub-process dies with a signal, we convert the exit
code to the shell convention of 128+sig. Callers of git may
be relying on this behavior, so let's make sure it does not
break.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t0005-signals.sh

@@ -20,4 +20,11 @@ test_expect_success 'sigchain works' '
 	test_cmp expect actual
 '
 
+test_expect_success 'signals are propagated using shell convention' '
+	# we use exec here to avoid any sub-shell interpretation
+	# of the exit code
+	git config alias.sigterm "!exec test-sigchain" &&
+	test_expect_code 143 git sigterm
+'
+
 test_done