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authorLibravatar Shawn O. Pearce <spearce@spearce.org>2007-01-14 02:44:18 -0500
committerLibravatar Shawn O. Pearce <spearce@spearce.org>2007-01-14 02:44:18 -0500
commit1fcdd62adf81a172f45c7c6a58177212d500b9d9 (patch)
tree94acde078fd78c3d214fe09d45e85ed346a2f2d4 /git-merge.sh
parentAllow creating branches without committing in fast-import. (diff)
parentgit-commit documentation: -a adds and also removes (diff)
downloadtgif-1fcdd62adf81a172f45c7c6a58177212d500b9d9.tar.xz
Merge branch 'master' into sp/fast-import
I'm bringing master in early so that the OBJ_OFS_DELTA implementation is available as part of the topic. This way git-fast-import can learn about this new slightly smaller and faster packfile format, and can generate them directly rather than needing to have them be repacked with git-pack-objects. Due to the API changes in master during the period of development of git-fast-import, a few minor tweaks to fast-import.c are needed to produce a working merge. I've done them here as part of the merge to ensure bisection always works. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Diffstat (limited to 'git-merge.sh')
-rwxr-xr-xgit-merge.sh142
1 files changed, 118 insertions, 24 deletions
diff --git a/git-merge.sh b/git-merge.sh
index a9cfafb1df..3eef048efc 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,23 +3,25 @@
# Copyright (c) 2005 Junio C Hamano
#
-USAGE='[-n] [--no-commit] [--squash] [-s <strategy>]... <merge-message> <head> <remote>+'
+USAGE='[-n] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
+
. git-sh-setup
+set_reflog_action "merge $*"
+require_work_tree
+
+test -z "$(git ls-files -u)" ||
+ die "You are in a middle of conflicted merge."
LF='
'
-all_strategies='recursive octopus resolve stupid ours'
+all_strategies='recur recursive octopus resolve stupid ours'
default_twohead_strategies='recursive'
default_octopus_strategies='octopus'
no_trivial_merge_strategies='ours'
use_strategies=
index_merge=t
-if test "@@NO_PYTHON@@"; then
- all_strategies='resolve octopus stupid ours'
- default_twohead_strategies='resolve'
-fi
dropsave() {
rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
@@ -35,7 +37,7 @@ savestate() {
restorestate() {
if test -f "$GIT_DIR/MERGE_SAVE"
then
- git reset --hard $head
+ git reset --hard $head >/dev/null
cpio -iuv <"$GIT_DIR/MERGE_SAVE"
git-update-index --refresh >/dev/null
fi
@@ -60,10 +62,10 @@ squash_message () {
finish () {
if test '' = "$2"
then
- rlogm="$rloga"
+ rlogm="$GIT_REFLOG_ACTION"
else
echo "$2"
- rlogm="$rloga: $2"
+ rlogm="$GIT_REFLOG_ACTION: $2"
fi
case "$squash" in
t)
@@ -94,7 +96,25 @@ finish () {
esac
}
-rloga=
+merge_name () {
+ remote="$1"
+ rh=$(git-rev-parse --verify "$remote^0" 2>/dev/null) || return
+ bh=$(git-show-ref -s --verify "refs/heads/$remote" 2>/dev/null)
+ if test "$rh" = "$bh"
+ then
+ echo "$rh branch '$remote' of ."
+ elif truname=$(expr "$remote" : '\(.*\)~[1-9][0-9]*$') &&
+ git-show-ref -q --verify "refs/heads/$truname" 2>/dev/null
+ then
+ echo "$rh branch '$truname' (early part) of ."
+ else
+ echo "$rh commit '$remote'"
+ fi
+}
+
+case "$#" in 0) usage ;; esac
+
+have_message=
while case "$#" in 0) break ;; esac
do
case "$1" in
@@ -124,8 +144,17 @@ do
die "available strategies are: $all_strategies" ;;
esac
;;
- --reflog-action=*)
- rloga=`expr "z$1" : 'z-[^=]*=\(.*\)'`
+ -m=*|--m=*|--me=*|--mes=*|--mess=*|--messa=*|--messag=*|--message=*)
+ merge_msg=`expr "z$1" : 'z-[^=]*=\(.*\)'`
+ have_message=t
+ ;;
+ -m|--m|--me|--mes|--mess|--messa|--messag|--message)
+ shift
+ case "$#" in
+ 1) usage ;;
+ esac
+ merge_msg="$1"
+ have_message=t
;;
-*) usage ;;
*) break ;;
@@ -133,22 +162,68 @@ do
shift
done
-merge_msg="$1"
-shift
-head_arg="$1"
-head=$(git-rev-parse --verify "$1"^0) || usage
-shift
+# This could be traditional "merge <msg> HEAD <commit>..." and the
+# way we can tell it is to see if the second token is HEAD, but some
+# people might have misused the interface and used a committish that
+# is the same as HEAD there instead. Traditional format never would
+# have "-m" so it is an additional safety measure to check for it.
+
+if test -z "$have_message" &&
+ second_token=$(git-rev-parse --verify "$2^0" 2>/dev/null) &&
+ head_commit=$(git-rev-parse --verify "HEAD" 2>/dev/null) &&
+ test "$second_token" = "$head_commit"
+then
+ merge_msg="$1"
+ shift
+ head_arg="$1"
+ shift
+elif ! git-rev-parse --verify HEAD >/dev/null 2>&1
+then
+ # If the merged head is a valid one there is no reason to
+ # forbid "git merge" into a branch yet to be born. We do
+ # the same for "git pull".
+ if test 1 -ne $#
+ then
+ echo >&2 "Can merge only exactly one commit into empty head"
+ exit 1
+ fi
+
+ rh=$(git rev-parse --verify "$1^0") ||
+ die "$1 - not something we can merge"
+
+ git-update-ref -m "initial pull" HEAD "$rh" "" &&
+ git-read-tree --reset -u HEAD
+ exit
+
+else
+ # We are invoked directly as the first-class UI.
+ head_arg=HEAD
+
+ # All the rest are the commits being merged; prepare
+ # the standard merge summary message to be appended to
+ # the given message. If remote is invalid we will die
+ # later in the common codepath so we discard the error
+ # in this loop.
+ merge_name=$(for remote
+ do
+ merge_name "$remote"
+ done | git-fmt-merge-msg
+ )
+ merge_msg="${merge_msg:+$merge_msg$LF$LF}$merge_name"
+fi
+head=$(git-rev-parse --verify "$head_arg"^0) || usage
# All the rest are remote heads
test "$#" = 0 && usage ;# we need at least one remote head.
-test "$rloga" = '' && rloga="merge: $@"
remoteheads=
for remote
do
- remotehead=$(git-rev-parse --verify "$remote"^0) ||
+ remotehead=$(git-rev-parse --verify "$remote"^0 2>/dev/null) ||
die "$remote - not something we can merge"
remoteheads="${remoteheads}$remotehead "
+ eval GITHEAD_$remotehead='"$remote"'
+ export GITHEAD_$remotehead
done
set x $remoteheads ; shift
@@ -156,9 +231,21 @@ case "$use_strategies" in
'')
case "$#" in
1)
- use_strategies="$default_twohead_strategies" ;;
+ var="`git-repo-config --get pull.twohead`"
+ if test -n "$var"
+ then
+ use_strategies="$var"
+ else
+ use_strategies="$default_twohead_strategies"
+ fi ;;
*)
- use_strategies="$default_octopus_strategies" ;;
+ var="`git-repo-config --get pull.octopus`"
+ if test -n "$var"
+ then
+ use_strategies="$var"
+ else
+ use_strategies="$default_octopus_strategies"
+ fi ;;
esac
;;
esac
@@ -198,10 +285,10 @@ f,*)
;;
?,1,"$head",*)
# Again the most common case of merging one remote.
- echo "Updating from $head to $1"
+ echo "Updating $(git-rev-parse --short $head)..$(git-rev-parse --short $1)"
git-update-index --refresh 2>/dev/null
new_head=$(git-rev-parse --verify "$1^0") &&
- git-read-tree -u -v -m $head "$new_head" &&
+ git-read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
finish "$new_head" "Fast forward"
dropsave
exit 0
@@ -336,7 +423,14 @@ fi
case "$best_strategy" in
'')
restorestate
- echo >&2 "No merge strategy handled the merge."
+ case "$use_strategies" in
+ ?*' '?*)
+ echo >&2 "No merge strategy handled the merge."
+ ;;
+ *)
+ echo >&2 "Merge with strategy $use_strategies failed."
+ ;;
+ esac
exit 2
;;
"$wt_strategy")