merge(3p/git): Merge git upstream at v2.26.2

third_party/git/t/lib-log-graph.sh

@@ -0,0 +1,28 @@
+# Helps shared by the test scripts for comparing log graphs.
+
+sanitize_log_output () {
+	sed -e 's/ *$//' \
+	    -e 's/commit [0-9a-f]*$/commit COMMIT_OBJECT_NAME/' \
+	    -e 's/Merge: [ 0-9a-f]*$/Merge: MERGE_PARENTS/' \
+	    -e 's/Merge tag.*/Merge HEADS DESCRIPTION/' \
+	    -e 's/Merge commit.*/Merge HEADS DESCRIPTION/' \
+	    -e 's/index [0-9a-f]*\.\.[0-9a-f]*/index BEFORE..AFTER/'
+}
+
+lib_test_cmp_graph () {
+	git log --graph "$@" >output &&
+	sed 's/ *$//' >output.sanitized <output &&
+	test_i18ncmp expect output.sanitized
+}
+
+lib_test_cmp_short_graph () {
+	git log --graph --pretty=short "$@" >output &&
+	sanitize_log_output >output.sanitized <output &&
+	test_i18ncmp expect output.sanitized
+}
+
+lib_test_cmp_colored_graph () {
+	git log --graph --color=always "$@" >output.colors.raw &&
+	test_decode_color <output.colors.raw | sed "s/ *\$//" >output.colors &&
+	test_cmp expect.colors output.colors
+}