cherry-pick, revert: add a label for ancestor

diff --git a/t/test-lib.sh b/t/test-lib.sh
index c1476f9a2391396a201a919025963b82f7e14217..a0e396a9522cec96443490fd77ff4abffb335287 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -65,6 +65,8 @@ GIT_TEST_CMP=${GIT_TEST_CMP:-diff -u}
 # CDPATH into the environment
 unset CDPATH
 
+unset GREP_OPTIONS
+
 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
        1|2|true)
                echo "* warning: Some tests will not work if GIT_TRACE" \
@@ -74,6 +76,12 @@ case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
                ;;
 esac
 
+# Convenience
+#
+# A regexp to match 5 and 40 hexdigits
+_x05='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
+_x40="$_x05$_x05$_x05$_x05$_x05$_x05$_x05$_x05"
+
 # Each test should start with something like this, after copyright notices:
 #
 # test_description='Description of this test...
@@ -224,6 +232,22 @@ test_decode_color () {
                -e 's/.\[m/<RESET>/g'
 }
 
+q_to_nul () {
+       perl -pe 'y/Q/\000/'
+}
+
+q_to_cr () {
+       tr Q '\015'
+}
+
+append_cr () {
+       sed -e 's/$/Q/' | tr Q '\015'
+}
+
+remove_cr () {
+       tr '\015' Q | sed -e 's/Q$//'
+}
+
 test_tick () {
        if test -z "${test_tick+set}"
        then