merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 54 insertions, 0 deletions

diff --git a/third_party/git/git-merge-resolve.sh b/third_party/git/git-merge-resolve.sh
new file mode 100755
index 000000000000..343fe7bccd0d
--- /dev/null
+++ b/third_party/git/git-merge-resolve.sh
@@ -0,0 +1,54 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Linus Torvalds
+# Copyright (c) 2005 Junio C Hamano
+#
+# Resolve two trees, using enhanced multi-base read-tree.
+
+# The first parameters up to -- are merge bases; the rest are heads.
+bases= head= remotes= sep_seen=
+for arg
+do
+	case ",$sep_seen,$head,$arg," in
+	*,--,)
+		sep_seen=yes
+		;;
+	,yes,,*)
+		head=$arg
+		;;
+	,yes,*)
+		remotes="$remotes$arg "
+		;;
+	*)
+		bases="$bases$arg "
+		;;
+	esac
+done
+
+# Give up if we are given two or more remotes -- not handling octopus.
+case "$remotes" in
+?*' '?*)
+	exit 2 ;;
+esac
+
+# Give up if this is a baseless merge.
+if test '' = "$bases"
+then
+	exit 2
+fi
+
+git update-index -q --refresh
+git read-tree -u -m --aggressive $bases $head $remotes || exit 2
+echo "Trying simple merge."
+if result_tree=$(git write-tree 2>/dev/null)
+then
+	exit 0
+else
+	echo "Simple merge failed, trying Automatic merge."
+	if git merge-index -o git-merge-one-file -a
+	then
+		exit 0
+	else
+		exit 1
+	fi
+fi