format-patch: inform user that patch-id generation is unstable

diff --git a/t/t9101-git-svn-props.sh b/t/t9101-git-svn-props.sh
index 8a5c8dc1aad6d036964776d9e3fe2ecd0a893305..c26c4b0927916fca6902eb54600a13aee5e7dea9 100755 (executable)
--- a/t/t9101-git-svn-props.sh
+++ b/t/t9101-git-svn-props.sh
@@ -174,7 +174,8 @@ test_expect_success 'test create-ignore' "
        cmp ./deeply/.gitignore create-ignore.expect &&
        cmp ./deeply/nested/.gitignore create-ignore.expect &&
        cmp ./deeply/nested/directory/.gitignore create-ignore.expect &&
-       git ls-files -s | grep gitignore | cmp - create-ignore-index.expect
+       git ls-files -s >ls_files_result &&
+       grep gitignore ls_files_result | cmp - create-ignore-index.expect
        "
 
 cat >prop.expect <<\EOF
@@ -189,17 +190,21 @@ EOF
 # This test can be improved: since all the svn:ignore contain the same
 # pattern, it can pass even though the propget did not execute on the
 # right directory.
-test_expect_success 'test propget' "
-       git svn propget svn:ignore . | cmp - prop.expect &&
+test_expect_success 'test propget' '
+       test_propget () {
+               git svn propget $1 $2 >actual &&
+               cmp $3 actual
+       } &&
+       test_propget svn:ignore . prop.expect &&
        cd deeply &&
-       git svn propget svn:ignore . | cmp - ../prop.expect &&
-       git svn propget svn:entry:committed-rev nested/directory/.keep \
-         | cmp - ../prop2.expect &&
-       git svn propget svn:ignore .. | cmp - ../prop.expect &&
-       git svn propget svn:ignore nested/ | cmp - ../prop.expect &&
-       git svn propget svn:ignore ./nested | cmp - ../prop.expect &&
-       git svn propget svn:ignore .././deeply/nested | cmp - ../prop.expect
-       "
+       test_propget svn:ignore . ../prop.expect &&
+       test_propget svn:entry:committed-rev nested/directory/.keep \
+               ../prop2.expect &&
+       test_propget svn:ignore .. ../prop.expect &&
+       test_propget svn:ignore nested/ ../prop.expect &&
+       test_propget svn:ignore ./nested ../prop.expect &&
+       test_propget svn:ignore .././deeply/nested ../prop.expect
+       '
 
 cat >prop.expect <<\EOF
 Properties on '.':
@@ -218,8 +223,11 @@ Properties on 'nested/directory/.keep':
 EOF
 
 test_expect_success 'test proplist' "
-       git svn proplist . | cmp - prop.expect &&
-       git svn proplist nested/directory/.keep | cmp - prop2.expect
+       git svn proplist . >actual &&
+       cmp prop.expect actual &&
+
+       git svn proplist nested/directory/.keep >actual &&
+       cmp prop2.expect actual
        "
 
 test_done