Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
#!/bin/sh
|
|
|
|
#
|
|
|
|
# Copyright (c) 2005 Junio C Hamano
|
|
|
|
#
|
|
|
|
|
2007-11-04 10:30:58 +00:00
|
|
|
OPTIONS_KEEPDASHDASH=
|
|
|
|
OPTIONS_SPEC="\
|
|
|
|
git-merge [options] <remote>...
|
|
|
|
git-merge [options] <msg> HEAD <remote>
|
|
|
|
--
|
|
|
|
summary show a diffstat at the end of the merge
|
|
|
|
n,no-summary don't show a diffstat at the end of the merge
|
|
|
|
squash create a single commit instead of doing a merge
|
|
|
|
commit perform a commit if the merge sucesses (default)
|
|
|
|
ff allow fast forward (default)
|
|
|
|
s,strategy= merge strategy to use
|
|
|
|
m,message= message to be used for the merge commit (if any)
|
|
|
|
"
|
2006-11-20 09:06:09 +00:00
|
|
|
|
2007-01-12 20:52:03 +00:00
|
|
|
SUBDIRECTORY_OK=Yes
|
2005-11-24 08:12:11 +00:00
|
|
|
. git-sh-setup
|
2006-12-31 04:32:38 +00:00
|
|
|
require_work_tree
|
2007-01-12 20:52:03 +00:00
|
|
|
cd_to_toplevel
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
2007-01-01 07:21:50 +00:00
|
|
|
test -z "$(git ls-files -u)" ||
|
2007-01-12 20:52:03 +00:00
|
|
|
die "You are in the middle of a conflicted merge."
|
2007-01-01 07:21:50 +00:00
|
|
|
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
LF='
|
|
|
|
'
|
|
|
|
|
2007-02-16 00:32:45 +00:00
|
|
|
all_strategies='recur recursive octopus resolve stupid ours subtree'
|
2006-09-25 02:49:47 +00:00
|
|
|
default_twohead_strategies='recursive'
|
2006-03-18 22:50:53 +00:00
|
|
|
default_octopus_strategies='octopus'
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
no_fast_forward_strategies='subtree ours'
|
|
|
|
no_trivial_strategies='recursive recur subtree ours'
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
use_strategies=
|
2006-03-18 22:50:53 +00:00
|
|
|
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
allow_fast_forward=t
|
|
|
|
allow_trivial_merge=t
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
2005-09-23 07:43:04 +00:00
|
|
|
dropsave() {
|
2005-09-25 07:12:06 +00:00
|
|
|
rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
|
2007-11-01 21:30:30 +00:00
|
|
|
"$GIT_DIR/MERGE_STASH" || exit 1
|
2005-09-23 07:43:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
savestate() {
|
2005-09-28 23:29:11 +00:00
|
|
|
# Stash away any local modifications.
|
2007-11-01 21:30:30 +00:00
|
|
|
git stash create >"$GIT_DIR/MERGE_STASH"
|
2005-09-23 07:43:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
restorestate() {
|
2007-11-01 21:30:30 +00:00
|
|
|
if test -f "$GIT_DIR/MERGE_STASH"
|
2005-09-25 07:12:06 +00:00
|
|
|
then
|
2006-12-22 23:21:55 +00:00
|
|
|
git reset --hard $head >/dev/null
|
2007-11-01 21:30:30 +00:00
|
|
|
git stash apply $(cat "$GIT_DIR/MERGE_STASH")
|
2007-07-03 05:52:14 +00:00
|
|
|
git update-index --refresh >/dev/null
|
2005-09-25 07:12:06 +00:00
|
|
|
fi
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
}
|
|
|
|
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
finish_up_to_date () {
|
|
|
|
case "$squash" in
|
|
|
|
t)
|
|
|
|
echo "$1 (nothing to squash)" ;;
|
|
|
|
'')
|
|
|
|
echo "$1" ;;
|
|
|
|
esac
|
|
|
|
dropsave
|
|
|
|
}
|
|
|
|
|
|
|
|
squash_message () {
|
|
|
|
echo Squashed commit of the following:
|
|
|
|
echo
|
2007-09-23 22:51:41 +00:00
|
|
|
git log --no-merges ^"$head" $remoteheads
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
}
|
|
|
|
|
2005-10-22 11:45:15 +00:00
|
|
|
finish () {
|
2006-07-11 05:52:54 +00:00
|
|
|
if test '' = "$2"
|
|
|
|
then
|
2006-12-28 07:34:48 +00:00
|
|
|
rlogm="$GIT_REFLOG_ACTION"
|
2006-07-11 05:52:54 +00:00
|
|
|
else
|
|
|
|
echo "$2"
|
2006-12-28 07:34:48 +00:00
|
|
|
rlogm="$GIT_REFLOG_ACTION: $2"
|
2006-07-11 05:52:54 +00:00
|
|
|
fi
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
case "$squash" in
|
|
|
|
t)
|
|
|
|
echo "Squash commit -- not updating HEAD"
|
|
|
|
squash_message >"$GIT_DIR/SQUASH_MSG"
|
2005-10-22 11:45:15 +00:00
|
|
|
;;
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
'')
|
|
|
|
case "$merge_msg" in
|
|
|
|
'')
|
|
|
|
echo "No merge message -- not updating HEAD"
|
|
|
|
;;
|
|
|
|
*)
|
2007-07-03 05:52:14 +00:00
|
|
|
git update-ref -m "$rlogm" HEAD "$1" "$head" || exit 1
|
2007-09-05 21:59:59 +00:00
|
|
|
git gc --auto
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
;;
|
|
|
|
esac
|
2005-10-22 11:45:15 +00:00
|
|
|
;;
|
|
|
|
esac
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
case "$1" in
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
'')
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
;;
|
|
|
|
?*)
|
2007-05-23 21:01:29 +00:00
|
|
|
if test "$show_diffstat" = t
|
|
|
|
then
|
2007-05-05 20:48:54 +00:00
|
|
|
# We want color (if set), but no pager
|
2007-07-03 05:52:14 +00:00
|
|
|
GIT_PAGER='' git diff --stat --summary -M "$head" "$1"
|
2007-05-23 21:01:29 +00:00
|
|
|
fi
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
;;
|
|
|
|
esac
|
2007-09-11 16:59:03 +00:00
|
|
|
|
|
|
|
# Run a post-merge hook
|
|
|
|
if test -x "$GIT_DIR"/hooks/post-merge
|
|
|
|
then
|
|
|
|
case "$squash" in
|
|
|
|
t)
|
|
|
|
"$GIT_DIR"/hooks/post-merge 1
|
|
|
|
;;
|
|
|
|
'')
|
|
|
|
"$GIT_DIR"/hooks/post-merge 0
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
fi
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
}
|
|
|
|
|
2006-12-16 20:31:45 +00:00
|
|
|
merge_name () {
|
|
|
|
remote="$1"
|
2007-07-03 05:52:14 +00:00
|
|
|
rh=$(git rev-parse --verify "$remote^0" 2>/dev/null) || return
|
|
|
|
bh=$(git show-ref -s --verify "refs/heads/$remote" 2>/dev/null)
|
2006-12-16 20:31:45 +00:00
|
|
|
if test "$rh" = "$bh"
|
|
|
|
then
|
|
|
|
echo "$rh branch '$remote' of ."
|
|
|
|
elif truname=$(expr "$remote" : '\(.*\)~[1-9][0-9]*$') &&
|
2007-07-03 05:52:14 +00:00
|
|
|
git show-ref -q --verify "refs/heads/$truname" 2>/dev/null
|
2006-12-16 20:31:45 +00:00
|
|
|
then
|
|
|
|
echo "$rh branch '$truname' (early part) of ."
|
2007-03-22 09:07:30 +00:00
|
|
|
elif test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD"
|
|
|
|
then
|
|
|
|
sed -e 's/ not-for-merge / /' -e 1q \
|
|
|
|
"$GIT_DIR/FETCH_HEAD"
|
2006-12-16 20:31:45 +00:00
|
|
|
else
|
|
|
|
echo "$rh commit '$remote'"
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2007-09-23 22:51:43 +00:00
|
|
|
parse_config () {
|
2007-11-04 10:30:58 +00:00
|
|
|
while test $# != 0; do
|
|
|
|
case "$1" in
|
|
|
|
-n|--no-summary)
|
|
|
|
show_diffstat=false ;;
|
|
|
|
--summary)
|
|
|
|
show_diffstat=t ;;
|
|
|
|
--squash)
|
|
|
|
allow_fast_forward=t squash=t no_commit=t ;;
|
|
|
|
--no-squash)
|
|
|
|
allow_fast_forward=t squash= no_commit= ;;
|
|
|
|
--commit)
|
|
|
|
allow_fast_forward=t squash= no_commit= ;;
|
|
|
|
--no-commit)
|
|
|
|
allow_fast_forward=t squash= no_commit=t ;;
|
|
|
|
--ff)
|
|
|
|
allow_fast_forward=t squash= no_commit= ;;
|
|
|
|
--no-ff)
|
|
|
|
allow_fast_forward=false squash= no_commit= ;;
|
|
|
|
-s|--strategy)
|
|
|
|
shift
|
|
|
|
case " $all_strategies " in
|
|
|
|
*" $1 "*)
|
|
|
|
use_strategies="$use_strategies$1 " ;;
|
|
|
|
*)
|
|
|
|
die "available strategies are: $all_strategies" ;;
|
|
|
|
esac
|
|
|
|
;;
|
|
|
|
-m|--message)
|
|
|
|
shift
|
|
|
|
merge_msg="$1"
|
|
|
|
have_message=t
|
|
|
|
;;
|
|
|
|
--)
|
2007-09-23 22:51:43 +00:00
|
|
|
shift
|
2007-11-04 10:30:58 +00:00
|
|
|
break ;;
|
|
|
|
*) usage ;;
|
|
|
|
esac
|
|
|
|
shift
|
2007-09-23 22:51:43 +00:00
|
|
|
done
|
2007-11-04 10:30:58 +00:00
|
|
|
args_left=$#
|
2007-09-23 22:51:43 +00:00
|
|
|
}
|
|
|
|
|
2007-09-23 22:51:42 +00:00
|
|
|
test $# != 0 || usage
|
|
|
|
|
|
|
|
have_message=
|
2007-09-23 22:51:43 +00:00
|
|
|
|
|
|
|
if branch=$(git-symbolic-ref -q HEAD)
|
|
|
|
then
|
|
|
|
mergeopts=$(git config "branch.${branch#refs/heads/}.mergeoptions")
|
|
|
|
if test -n "$mergeopts"
|
|
|
|
then
|
2007-11-04 10:30:58 +00:00
|
|
|
parse_config $mergeopts --
|
2007-09-23 22:51:43 +00:00
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2007-11-04 10:30:58 +00:00
|
|
|
parse_config "$@"
|
|
|
|
while test $args_left -lt $#; do shift; done
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
2007-05-23 21:01:29 +00:00
|
|
|
if test -z "$show_diffstat"; then
|
2007-07-03 05:52:14 +00:00
|
|
|
test "$(git config --bool merge.diffstat)" = false && show_diffstat=false
|
2007-05-23 21:01:29 +00:00
|
|
|
test -z "$show_diffstat" && show_diffstat=t
|
|
|
|
fi
|
|
|
|
|
2006-11-20 09:06:09 +00:00
|
|
|
# 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 "$have_message" &&
|
2007-07-03 05:52:14 +00:00
|
|
|
second_token=$(git rev-parse --verify "$2^0" 2>/dev/null) &&
|
|
|
|
head_commit=$(git rev-parse --verify "HEAD" 2>/dev/null) &&
|
2006-11-20 09:06:09 +00:00
|
|
|
test "$second_token" = "$head_commit"
|
|
|
|
then
|
|
|
|
merge_msg="$1"
|
|
|
|
shift
|
|
|
|
head_arg="$1"
|
|
|
|
shift
|
2007-07-03 05:52:14 +00:00
|
|
|
elif ! git rev-parse --verify HEAD >/dev/null 2>&1
|
2006-11-22 05:13:28 +00:00
|
|
|
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 "$1 - not something we can merge"
|
|
|
|
|
2007-07-03 05:52:14 +00:00
|
|
|
git update-ref -m "initial pull" HEAD "$rh" "" &&
|
|
|
|
git read-tree --reset -u HEAD
|
2006-11-22 05:13:28 +00:00
|
|
|
exit
|
|
|
|
|
2006-11-20 09:06:09 +00:00
|
|
|
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=$(for remote
|
|
|
|
do
|
2006-12-16 20:31:45 +00:00
|
|
|
merge_name "$remote"
|
2007-07-03 05:52:14 +00:00
|
|
|
done | git fmt-merge-msg
|
2006-11-20 09:06:09 +00:00
|
|
|
)
|
|
|
|
merge_msg="${merge_msg:+$merge_msg$LF$LF}$merge_name"
|
|
|
|
fi
|
2007-07-03 05:52:14 +00:00
|
|
|
head=$(git rev-parse --verify "$head_arg"^0) || usage
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
|
|
|
# All the rest are remote heads
|
2006-03-18 22:50:53 +00:00
|
|
|
test "$#" = 0 && usage ;# we need at least one remote head.
|
2007-01-26 23:09:02 +00:00
|
|
|
set_reflog_action "merge $*"
|
2006-03-18 22:50:53 +00:00
|
|
|
|
2005-12-14 01:01:23 +00:00
|
|
|
remoteheads=
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
for remote
|
|
|
|
do
|
2007-07-03 05:52:14 +00:00
|
|
|
remotehead=$(git rev-parse --verify "$remote"^0 2>/dev/null) ||
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
die "$remote - not something we can merge"
|
2005-12-14 01:01:23 +00:00
|
|
|
remoteheads="${remoteheads}$remotehead "
|
2006-12-23 08:44:47 +00:00
|
|
|
eval GITHEAD_$remotehead='"$remote"'
|
|
|
|
export GITHEAD_$remotehead
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
done
|
2005-12-14 01:01:23 +00:00
|
|
|
set x $remoteheads ; shift
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
2006-03-18 22:50:53 +00:00
|
|
|
case "$use_strategies" in
|
|
|
|
'')
|
|
|
|
case "$#" in
|
|
|
|
1)
|
2007-07-03 05:52:14 +00:00
|
|
|
var="`git config --get pull.twohead`"
|
2006-12-28 07:35:05 +00:00
|
|
|
if test -n "$var"
|
|
|
|
then
|
|
|
|
use_strategies="$var"
|
|
|
|
else
|
|
|
|
use_strategies="$default_twohead_strategies"
|
|
|
|
fi ;;
|
2006-03-18 22:50:53 +00:00
|
|
|
*)
|
2007-07-03 05:52:14 +00:00
|
|
|
var="`git config --get pull.octopus`"
|
2006-12-28 07:35:05 +00:00
|
|
|
if test -n "$var"
|
|
|
|
then
|
|
|
|
use_strategies="$var"
|
|
|
|
else
|
|
|
|
use_strategies="$default_octopus_strategies"
|
|
|
|
fi ;;
|
2006-03-18 22:50:53 +00:00
|
|
|
esac
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
|
|
|
|
for s in $use_strategies
|
|
|
|
do
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
for ss in $no_fast_forward_strategies
|
2007-02-16 23:08:25 +00:00
|
|
|
do
|
|
|
|
case " $s " in
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
*" $ss "*)
|
|
|
|
allow_fast_forward=f
|
|
|
|
break
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
done
|
|
|
|
for ss in $no_trivial_strategies
|
|
|
|
do
|
|
|
|
case " $s " in
|
|
|
|
*" $ss "*)
|
|
|
|
allow_trivial_merge=f
|
2007-02-16 23:08:25 +00:00
|
|
|
break
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
done
|
2006-03-18 22:50:53 +00:00
|
|
|
done
|
|
|
|
|
2005-11-10 02:54:14 +00:00
|
|
|
case "$#" in
|
|
|
|
1)
|
2007-07-03 05:52:14 +00:00
|
|
|
common=$(git merge-base --all $head "$@")
|
2005-11-10 02:54:14 +00:00
|
|
|
;;
|
|
|
|
*)
|
2007-07-03 05:52:14 +00:00
|
|
|
common=$(git show-branch --merge-base $head "$@")
|
2005-11-10 02:54:14 +00:00
|
|
|
;;
|
|
|
|
esac
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
echo "$head" >"$GIT_DIR/ORIG_HEAD"
|
|
|
|
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
case "$allow_fast_forward,$#,$common,$no_commit" in
|
2006-03-18 22:50:53 +00:00
|
|
|
?,*,'',*)
|
2005-10-03 06:13:09 +00:00
|
|
|
# No common ancestors found. We need a real merge.
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
;;
|
2006-03-18 22:50:53 +00:00
|
|
|
?,1,"$1",*)
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
# If head can reach all the merge then we are up to date.
|
2006-03-18 22:50:53 +00:00
|
|
|
# but first the most common case of merging one remote.
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
finish_up_to_date "Already up-to-date."
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
exit 0
|
|
|
|
;;
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
t,1,"$head",*)
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
# Again the most common case of merging one remote.
|
2007-07-03 05:52:14 +00:00
|
|
|
echo "Updating $(git rev-parse --short $head)..$(git rev-parse --short $1)"
|
|
|
|
git update-index --refresh 2>/dev/null
|
2007-03-11 16:28:56 +00:00
|
|
|
msg="Fast forward"
|
|
|
|
if test -n "$have_message"
|
|
|
|
then
|
|
|
|
msg="$msg (no commit created; -m option ignored)"
|
|
|
|
fi
|
2007-07-03 05:52:14 +00:00
|
|
|
new_head=$(git rev-parse --verify "$1^0") &&
|
|
|
|
git read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
|
2007-03-11 16:28:56 +00:00
|
|
|
finish "$new_head" "$msg" || exit
|
2005-09-23 07:43:04 +00:00
|
|
|
dropsave
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
exit 0
|
|
|
|
;;
|
2006-03-18 22:50:53 +00:00
|
|
|
?,1,?*"$LF"?*,*)
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
# We are not doing octopus and not fast forward. Need a
|
|
|
|
# real merge.
|
|
|
|
;;
|
2006-03-18 22:50:53 +00:00
|
|
|
?,1,*,)
|
2005-10-02 18:13:44 +00:00
|
|
|
# We are not doing octopus, not fast forward, and have only
|
2006-12-28 07:35:34 +00:00
|
|
|
# one common.
|
2007-07-03 05:52:14 +00:00
|
|
|
git update-index --refresh 2>/dev/null
|
git-merge: do up-to-date check also for all strategies
This clarifies the logic to omit fast-forward check and omit
trivial merge before running the specified strategy.
The "index_merge" variable started out as a flag to say "do not
do anything clever", but when recursive was changed to skip the
trivial merge, the semantics were changed and the variable alone
does not make sense anymore.
This splits the variable into two, allow_fast_forward (which is
almost always true, and avoids making a merge commit when the
other commit is a descendant of our branch, but is set to false
for ours and subtree) and allow_trivial_merge (which is false
for ours, recursive and subtree).
Unlike the earlier implementation, the "ours" strategy allows an
up-to-date condition. When we are up-to-date, the result will
be our commit, and by definition, we will have our tree as the
result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-16 06:19:55 +00:00
|
|
|
case "$allow_trivial_merge" in
|
|
|
|
t)
|
2006-12-28 07:35:34 +00:00
|
|
|
# See if it is really trivial.
|
|
|
|
git var GIT_COMMITTER_IDENT >/dev/null || exit
|
|
|
|
echo "Trying really trivial in-index merge..."
|
2007-07-03 05:52:14 +00:00
|
|
|
if git read-tree --trivial -m -u -v $common $head "$1" &&
|
|
|
|
result_tree=$(git write-tree)
|
2006-12-28 07:35:34 +00:00
|
|
|
then
|
|
|
|
echo "Wonderful."
|
|
|
|
result_commit=$(
|
2007-05-26 07:33:03 +00:00
|
|
|
printf '%s\n' "$merge_msg" |
|
2007-07-03 05:52:14 +00:00
|
|
|
git commit-tree $result_tree -p HEAD -p "$1"
|
2006-12-28 07:35:34 +00:00
|
|
|
) || exit
|
|
|
|
finish "$result_commit" "In-index merge"
|
|
|
|
dropsave
|
|
|
|
exit 0
|
|
|
|
fi
|
|
|
|
echo "Nope."
|
|
|
|
esac
|
2005-10-02 18:13:44 +00:00
|
|
|
;;
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
*)
|
|
|
|
# An octopus. If we can reach all the remote we are up to date.
|
|
|
|
up_to_date=t
|
|
|
|
for remote
|
|
|
|
do
|
2007-07-03 05:52:14 +00:00
|
|
|
common_one=$(git merge-base --all $head $remote)
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
if test "$common_one" != "$remote"
|
|
|
|
then
|
|
|
|
up_to_date=f
|
|
|
|
break
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
if test "$up_to_date" = t
|
|
|
|
then
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
finish_up_to_date "Already up-to-date. Yeeah!"
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
exit 0
|
|
|
|
fi
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
|
2006-02-19 04:51:26 +00:00
|
|
|
# We are going to make a new commit.
|
|
|
|
git var GIT_COMMITTER_IDENT >/dev/null || exit
|
|
|
|
|
2005-09-23 07:43:04 +00:00
|
|
|
# At this point, we need a real merge. No matter what strategy
|
|
|
|
# we use, it would operate on the index, possibly affecting the
|
|
|
|
# working tree, and when resolved cleanly, have the desired tree
|
|
|
|
# in the index -- this means that the index must be in sync with
|
2005-09-28 23:29:11 +00:00
|
|
|
# the $head commit. The strategies are responsible to ensure this.
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
2005-09-23 07:43:04 +00:00
|
|
|
case "$use_strategies" in
|
|
|
|
?*' '?*)
|
|
|
|
# Stash away the local changes so that we can try more than one.
|
|
|
|
savestate
|
|
|
|
single_strategy=no
|
|
|
|
;;
|
|
|
|
*)
|
2007-11-01 21:30:30 +00:00
|
|
|
rm -f "$GIT_DIR/MERGE_STASH"
|
2005-09-23 07:43:04 +00:00
|
|
|
single_strategy=yes
|
|
|
|
;;
|
|
|
|
esac
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
|
|
|
result_tree= best_cnt=-1 best_strategy= wt_strategy=
|
2005-12-23 23:48:09 +00:00
|
|
|
merge_was_ok=
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
for strategy in $use_strategies
|
|
|
|
do
|
|
|
|
test "$wt_strategy" = '' || {
|
|
|
|
echo "Rewinding the tree to pristine..."
|
2005-09-23 07:43:04 +00:00
|
|
|
restorestate
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
}
|
2005-09-23 07:43:04 +00:00
|
|
|
case "$single_strategy" in
|
|
|
|
no)
|
|
|
|
echo "Trying merge strategy $strategy..."
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
|
|
|
|
# Remember which strategy left the state in the working tree
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
wt_strategy=$strategy
|
2005-09-23 07:43:04 +00:00
|
|
|
|
2005-11-02 03:30:11 +00:00
|
|
|
git-merge-$strategy $common -- "$head_arg" "$@"
|
|
|
|
exit=$?
|
|
|
|
if test "$no_commit" = t && test "$exit" = 0
|
|
|
|
then
|
2005-12-23 23:48:09 +00:00
|
|
|
merge_was_ok=t
|
2005-11-02 03:30:11 +00:00
|
|
|
exit=1 ;# pretend it left conflicts.
|
|
|
|
fi
|
|
|
|
|
|
|
|
test "$exit" = 0 || {
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
|
|
|
|
# The backend exits with 1 when conflicts are left to be resolved,
|
|
|
|
# with 2 when it does not handle the given merge at all.
|
|
|
|
|
|
|
|
if test "$exit" -eq 1
|
|
|
|
then
|
|
|
|
cnt=`{
|
2007-07-03 05:52:14 +00:00
|
|
|
git diff-files --name-only
|
|
|
|
git ls-files --unmerged
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
} | wc -l`
|
|
|
|
if test $best_cnt -le 0 -o $cnt -le $best_cnt
|
|
|
|
then
|
|
|
|
best_strategy=$strategy
|
|
|
|
best_cnt=$cnt
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
|
|
|
|
# Automerge succeeded.
|
2007-07-03 05:52:14 +00:00
|
|
|
result_tree=$(git write-tree) && break
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
done
|
|
|
|
|
|
|
|
# If we have a resulting tree, that means the strategy module
|
|
|
|
# auto resolved the merge cleanly.
|
|
|
|
if test '' != "$result_tree"
|
|
|
|
then
|
2007-09-23 22:51:45 +00:00
|
|
|
if test "$allow_fast_forward" = "t"
|
|
|
|
then
|
|
|
|
parents=$(git show-branch --independent "$head" "$@")
|
|
|
|
else
|
|
|
|
parents=$(git rev-parse "$head" "$@")
|
|
|
|
fi
|
|
|
|
parents=$(echo "$parents" | sed -e 's/^/-p /')
|
2007-07-03 05:52:14 +00:00
|
|
|
result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
|
2006-07-11 05:52:54 +00:00
|
|
|
finish "$result_commit" "Merge made by $wt_strategy."
|
2005-09-23 07:43:04 +00:00
|
|
|
dropsave
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
exit 0
|
|
|
|
fi
|
|
|
|
|
|
|
|
# Pick the result from the best strategy and have the user fix it up.
|
|
|
|
case "$best_strategy" in
|
|
|
|
'')
|
2005-09-23 07:43:04 +00:00
|
|
|
restorestate
|
2006-12-13 17:32:40 +00:00
|
|
|
case "$use_strategies" in
|
|
|
|
?*' '?*)
|
|
|
|
echo >&2 "No merge strategy handled the merge."
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
echo >&2 "Merge with strategy $use_strategies failed."
|
|
|
|
;;
|
|
|
|
esac
|
2005-12-03 10:40:21 +00:00
|
|
|
exit 2
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
;;
|
|
|
|
"$wt_strategy")
|
|
|
|
# We already have its result in the working tree.
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
echo "Rewinding the tree to pristine..."
|
2005-09-23 07:43:04 +00:00
|
|
|
restorestate
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
echo "Using the $best_strategy to prepare resolving by hand."
|
2005-09-23 07:43:04 +00:00
|
|
|
git-merge-$best_strategy $common -- "$head_arg" "$@"
|
Multi-backend merge driver.
The new command 'git merge' takes the current head and one or more
remote heads, with the commit log message for the automated case.
If the heads being merged are simple fast-forwards, it acts the
same way as the current 'git resolve'. Otherwise, it tries
different merge strategies and takes the result from the one that
succeeded auto-merging, if there is any.
If no merge strategy succeeds auto-merging, their results are
evaluated for number of paths needed for hand resolving, and the
one with the least number of such paths is left in the working
tree. The user is asked to resolve them by hand and make a
commit manually.
The calling convention from the 'git merge' driver to merge
strategy programs is very simple:
- A strategy program is to be called 'git-merge-<strategy>'.
- They take input of this form:
<common1> <common2> ... '--' <head> <remote1> <remote2>...
That is, one or more the common ancestors, double dash, the
current head, and one or more remote heads being merged into
the current branch.
- Before a strategy program is called, the working tree is
matched to the current <head>.
- The strategy program exits with status code 0 when it
successfully auto-merges the given heads. It should do
update-cache for all the merged paths when it does so -- the
index file will be used to record the merge result as a
commit by the driver.
- The strategy program exits with status code 1 when it leaves
conflicts behind. It should do update-cache for all the
merged paths that it successfully auto-merged, and leave the
cache entry in the index file as the same as <head> for paths
it could not auto-merge, and leave its best-effort result
with conflict markers in the working tree when it does so.
- The strategy program exists with status code other than 0 or
1 if it does not handle the given merge at all.
As examples, this commit comes with merge strategies based on
'git resolve' and 'git octopus'.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-09-08 20:47:12 +00:00
|
|
|
;;
|
|
|
|
esac
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
|
|
|
|
if test "$squash" = t
|
|
|
|
then
|
|
|
|
finish
|
|
|
|
else
|
|
|
|
for remote
|
|
|
|
do
|
|
|
|
echo $remote
|
|
|
|
done >"$GIT_DIR/MERGE_HEAD"
|
2007-05-26 07:33:03 +00:00
|
|
|
printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG"
|
git-merge --squash
Some people tend to do many little commits on a topic branch,
recording all the trials and errors, and when the topic is
reasonably cooked well, would want to record the net effect of
the series as one commit on top of the mainline, removing the
cruft from the history. The topic is then abandoned or forked
off again from that point at the mainline.
The barebone porcelainish that comes with core git tools does
not officially support such operation, but you can fake it by
using "git pull --no-merge" when such a topic branch is not a
strict superset of the mainline, like this:
git checkout mainline
git pull --no-commit . that-topic-branch
: fix conflicts if any
rm -f .git/MERGE_HEAD
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
This however does not work when the topic branch is a fast
forward of the mainline, because normal "git pull" will never
create a merge commit in such a case, and there is nothing
special --no-commit could do to begin with.
This patch introduces a new option, --squash, to support such a
workflow officially in both fast-forward case and true merge
case. The user-level operation would be the same in both cases:
git checkout mainline
git pull --squash . that-topic-branch
: fix conflicts if any -- naturally, there would be
: no conflict if fast forward.
git commit -a -m 'consolidated commit log message'
git branch -f that-topic-branch ;# now fully merged
When the current branch is already up-to-date with respect to
the other branch, there truly is nothing to do, so the new
option does not have any effect.
This was brought up in #git IRC channel recently.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-23 08:37:02 +00:00
|
|
|
fi
|
2005-09-25 07:12:06 +00:00
|
|
|
|
2005-12-23 23:48:09 +00:00
|
|
|
if test "$merge_was_ok" = t
|
|
|
|
then
|
|
|
|
echo >&2 \
|
|
|
|
"Automatic merge went well; stopped before committing as requested"
|
|
|
|
exit 0
|
|
|
|
else
|
2006-01-28 07:05:05 +00:00
|
|
|
{
|
|
|
|
echo '
|
|
|
|
Conflicts:
|
|
|
|
'
|
|
|
|
git ls-files --unmerged |
|
|
|
|
sed -e 's/^[^ ]* / /' |
|
|
|
|
uniq
|
|
|
|
} >>"$GIT_DIR/MERGE_MSG"
|
2007-07-06 12:05:59 +00:00
|
|
|
git rerere
|
2006-04-19 21:54:27 +00:00
|
|
|
die "Automatic merge failed; fix conflicts and then commit the result."
|
2005-12-23 23:48:09 +00:00
|
|
|
fi
|