Big tool rename.

As promised, this is the "big tool rename" patch.  The primary differences
since 0.99.6 are:

  (1) git-*-script are no more.  The commands installed do not
      have any such suffix so users do not have to remember if
      something is implemented as a shell script or not.

  (2) Many command names with 'cache' in them are renamed with
      'index' if that is what they mean.

There are backward compatibility symblic links so that you and
Porcelains can keep using the old names, but the backward
compatibility support  is expected to be removed in the near
future.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 103 insertions, 0 deletions

diff --git a/git-octopus.sh b/git-octopus.sh
new file mode 100755
index 0000000000..521cc6f361
--- /dev/null
+++ b/git-octopus.sh
@@ -0,0 +1,103 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+# Resolve two or more trees recorded in $GIT_DIR/FETCH_HEAD.
+#
+. git-sh-setup || die "Not a git archive"
+
+usage () {
+    die "usage: git octopus"
+}
+
+# Sanity check the heads early.
+while read SHA1 REPO
+do
+	test $(git-cat-file -t $SHA1) = "commit" ||
+		die "$REPO given to octopus is not a commit"
+done <"$GIT_DIR/FETCH_HEAD"
+
+head=$(git-rev-parse --verify HEAD) || exit
+
+git-update-index --refresh ||
+	die "Your working tree is dirty."
+test "$(git-diff-index --cached "$head")" = "" ||
+	die "Your working tree does not match HEAD."
+
+# MRC is the current "merge reference commit"
+# MRT is the current "merge result tree"
+
+MRC=$head MSG= PARENT="-p $head"
+MRT=$(git-write-tree)
+CNT=1 ;# counting our head
+NON_FF_MERGE=0
+while read SHA1 REPO
+do
+	common=$(git-merge-base $MRC $SHA1) ||
+		die "Unable to find common commit with $SHA1 from $REPO"
+
+	if test "$common" = $SHA1
+	then
+		echo "Already up-to-date: $REPO"
+		continue
+	fi
+
+	CNT=`expr $CNT + 1`
+	PARENT="$PARENT -p $SHA1"
+	MSG="$MSG
+	$REPO"
+
+	if test "$common,$NON_FF_MERGE" = "$MRC,0"
+	then
+		# The first head being merged was a fast-forward.
+		# Advance MRC to the head being merged, and use that
+		# tree as the intermediate result of the merge.
+		# We still need to count this as part of the parent set.
+
+		echo "Fast forwarding to: $REPO"
+		git-read-tree -u -m $head $SHA1 || exit
+		MRC=$SHA1 MRT=$(git-write-tree)
+		continue
+	fi
+
+	NON_FF_MERGE=1
+
+	echo "Trying simple merge with $REPO"
+	git-read-tree -u -m $common $MRT $SHA1 || exit
+	next=$(git-write-tree 2>/dev/null)
+	if test $? -ne 0
+	then
+		echo "Simple merge did not work, trying automatic merge."
+		git-merge-index -o git-merge-one-file -a || {
+		git-read-tree --reset "$head"
+		git-checkout-index -f -q -u -a
+		die "Automatic merge failed; should not be doing Octopus"
+		}
+		next=$(git-write-tree 2>/dev/null)
+	fi
+	MRC=$common
+	MRT=$next
+done <"$GIT_DIR/FETCH_HEAD"
+
+# Just to be careful in case the user feeds nonsense to us.
+case "$CNT" in
+1)
+	echo "No changes."
+	exit 0 ;;
+2)
+	echo "Not an Octopus; making an ordinary commit."
+	MSG="Merge "`expr "$MSG" : '.	\(.*\)'` ; # remove LF and TAB
+	;;
+*)
+	# In an octopus, the original head is just one of the equals,
+	# so we should list it as such.
+	HEAD_LINK=`readlink "$GIT_DIR/HEAD"`
+	MSG="Octopus merge of the following:
+
+	$HEAD_LINK from .$MSG"
+	;;
+esac
+result_commit=$(echo "$MSG" | git-commit-tree $MRT $PARENT)
+echo "Committed merge $result_commit"
+echo $result_commit >"$GIT_DIR"/HEAD
+git-diff-tree -p $head $result_commit | git-apply --stat