From 2276aa6c098a0337bc2bec49742e332bdd1b802c Mon Sep 17 00:00:00 2001
From: Junio C Hamano <junkio@cox.net>
Date: Sat, 10 Sep 2005 17:56:19 -0700
Subject: [PATCH] Use Daniel's read-tree in the merge strategy 'resolve'.

And rename the one Linus kept calling stupid, 'stupid'.

Signed-off-by: Junio C Hamano <junkio@cox.net>
---
 Makefile             |  3 +-
 git-merge-resolve.sh | 38 ++-------------------
 git-merge-stupid.sh  | 80 ++++++++++++++++++++++++++++++++++++++++++++
 git-merge.sh         |  6 ++--
 4 files changed, 88 insertions(+), 39 deletions(-)
 create mode 100755 git-merge-stupid.sh

diff --git a/Makefile b/Makefile
index 7ef9861a7..41461fa81 100644
--- a/Makefile
+++ b/Makefile
@@ -74,7 +74,8 @@ SCRIPT_SH = \
 	git-resolve.sh git-revert.sh git-sh-setup.sh git-status.sh \
 	git-tag.sh git-verify-tag.sh git-whatchanged.sh git.sh \
 	git-applymbox.sh git-applypatch.sh \
-	git-merge.sh git-merge-resolve.sh git-merge-octopus.sh
+	git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
+	git-merge-resolve.sh
 
 SCRIPT_PERL = \
 	git-archimport.perl git-cvsimport.perl git-relink.perl \
diff --git a/git-merge-resolve.sh b/git-merge-resolve.sh
index f0a19b4c8..e3b04a0e9 100755
--- a/git-merge-resolve.sh
+++ b/git-merge-resolve.sh
@@ -1,8 +1,9 @@
 #!/bin/sh
 #
 # Copyright (c) 2005 Linus Torvalds
+# Copyright (c) 2005 Junio C Hamano
 #
-# Resolve two trees.
+# Resolve two trees, using enhancd multi-base read-tree.
 
 # The first parameters up to -- are merge bases; the rest are heads.
 bases= head= remotes= sep_seen=
@@ -30,41 +31,8 @@ case "$remotes" in
 	exit 2 ;;
 esac
 
-# Find an optimum merge base if there are more than one candidates.
-case "$bases" in
-?*' '?*)
-	echo "Trying to find the optimum merge base."
-	G=.tmp-index$$
-	best=
-	best_cnt=-1
-	for c in $bases
-	do
-		rm -f $G
-		GIT_INDEX_FILE=$G git-read-tree -m $c $head $remotes \
-			 2>/dev/null ||	continue
-		# Count the paths that are unmerged.
-		cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l`
-		if test $best_cnt -le 0 -o $cnt -le $best_cnt
-		then
-			best=$c
-			best_cnt=$cnt
-			if test "$best_cnt" -eq 0
-			then
-				# Cannot do any better than all trivial merge.
-				break
-			fi
-		fi
-	done
-	rm -f $G
-	common="$best"
-	;;
-*)
-	common="$bases"
-	;;
-esac
-
 git-update-index --refresh 2>/dev/null
-git-read-tree -u -m $common $head $remotes || exit 2
+git-read-tree -u -m $bases $head $remotes || exit 2
 echo "Trying simple merge."
 if result_tree=$(git-write-tree  2>/dev/null)
 then
diff --git a/git-merge-stupid.sh b/git-merge-stupid.sh
new file mode 100755
index 000000000..4faecb933
--- /dev/null
+++ b/git-merge-stupid.sh
@@ -0,0 +1,80 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Linus Torvalds
+#
+# Resolve two trees, 'stupid merge'.
+
+# The first parameters up to -- are merge bases; the rest are heads.
+bases= head= remotes= sep_seen=
+for arg
+do
+	case ",$sep_seen,$head,$arg," in
+	*,--,)
+		sep_seen=yes
+		;;
+	,yes,,*)
+		head=$arg
+		;;
+	,yes,*)
+		remotes="$remotes$arg "
+		;;
+	*)
+		bases="$bases$arg "
+		;;
+	esac
+done
+
+# Give up if we are given more than two remotes -- not handling octopus.
+case "$remotes" in
+?*' '?*)
+	exit 2 ;;
+esac
+
+# Find an optimum merge base if there are more than one candidates.
+case "$bases" in
+?*' '?*)
+	echo "Trying to find the optimum merge base."
+	G=.tmp-index$$
+	best=
+	best_cnt=-1
+	for c in $bases
+	do
+		rm -f $G
+		GIT_INDEX_FILE=$G git-read-tree -m $c $head $remotes \
+			 2>/dev/null ||	continue
+		# Count the paths that are unmerged.
+		cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l`
+		if test $best_cnt -le 0 -o $cnt -le $best_cnt
+		then
+			best=$c
+			best_cnt=$cnt
+			if test "$best_cnt" -eq 0
+			then
+				# Cannot do any better than all trivial merge.
+				break
+			fi
+		fi
+	done
+	rm -f $G
+	common="$best"
+	;;
+*)
+	common="$bases"
+	;;
+esac
+
+git-update-index --refresh 2>/dev/null
+git-read-tree -u -m $common $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
diff --git a/git-merge.sh b/git-merge.sh
index 9926e45d1..55b0c7269 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -12,10 +12,10 @@ usage () {
     die "git-merge [-n] [-s <strategy>]... <merge-message> <head> <remote>+"
 }
 
-# all_strategies='resolve multibase fredrik octopus'
+# all_strategies='resolve fredrik stupid octopus'
 
-all_strategies='resolve multibase octopus'
-default_strategies='resolve multibase octopus'
+all_strategies='resolve octopus stupid'
+default_strategies='resolve octopus'
 use_strategies=
 
 dropheads() {
-- 
2.30.2