gc: make --prune useful again by accepting an optional parameter

diff --git a/t/t4201-shortlog.sh b/t/t4201-shortlog.sh
index eef4cafda99729977af9bee2eca83493814faede..405b97119175a1c0fa75a9db30c6b1ab076cc44e 100755 (executable)
--- a/t/t4201-shortlog.sh
+++ b/t/t4201-shortlog.sh
@@ -45,11 +45,11 @@ A U Thor (5):
 
 EOF
 
-test_expect_success 'shortlog wrapping' 'diff -u expect out'
+test_expect_success 'shortlog wrapping' 'test_cmp expect out'
 
 git log HEAD > log
 GIT_DIR=non-existing git shortlog -w < log > out
 
-test_expect_success 'shortlog from non-git directory' 'diff -u expect out'
+test_expect_success 'shortlog from non-git directory' 'test_cmp expect out'
 
 test_done