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We will always unpack into our own internal index, but we will take the
source from wherever specified, and we will optionally write the result
to a specified index (optionally, because not everybody even _wants_ any
result: the index diffing really wants to just walk the tree and index
in parallel).
This ends up removing a fair number more lines than it adds, for the
simple reason that we can now skip all the crud that tried to be
oh-so-careful about maintaining our position in the index as we were
traversing and modifying it. Since we don't actually modify the source
index any more, we can just update the 'o->pos' pointer without worrying
about whether an index entry got removed or replaced or added to.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is just a very mechanical conversion, and makes everybody set it to
'&the_index' before calling, but at least it makes it more explicit
where we work with the index.
The next stage would be to split that index usage up into a 'source' and
a 'destination' index, so that we can unpack into a different index than
we started out from.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Directly call git_default_config instead.
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We need to rewrite the index file when we check out files, even if we
haven't modified the blob info by reading from another tree, so that
we get the stat cache to include the fact that we just modified the
file so it doesn't need to be refreshed.
While we're at it, move everything that needs to be done to check out
some paths from a tree (or the current index) into checkout_paths().
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* js/branch-track:
doc: documentation update for the branch track changes
branch: optionally setup branch.*.merge from upstream local branches
Conflicts:
Documentation/config.txt
Documentation/git-branch.txt
Documentation/git-checkout.txt
builtin-branch.c
cache.h
t/t7201-co.sh
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Even when -m is given to allow fallilng back to 3-way merge
while switching branches, we should refuse if the original index
is unmerged.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Ask branch_get() for the new branch explicitly instead of
letting it return a potentially stale information.
Tighten the logic to find the tracking branch to deal better
with misconfigured repositories (i.e. branch.*.merge can exist
but it may not have a refspec that fetches to .it)
Also fixes grammar in a message, as pointed out by Jeff King.
The function is about reporting and not automatically
fast-forwarding to the upstream, so stop calling it
"adjust-to".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
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This path doesn't actually care where in the tree you started out,
since it must change the whole thing anyway. With the gratuitous bug
removed, the argument is unused.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When switching branches from a subdirectory, checkout rewritten
in C extracted the toplevel of the tree in there.
This should fix it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When checking out a branch that is behind or forked from a
branch you are building on top of, we used to show full
left-right log but if you already _know_ you have long history
since you forked, it is a bit too much.
This tones down the message quite a bit, by only showing the
number of commits each side has since they diverged. Also the
message is not shown at all under --quiet.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git branch" and "git checkout -b" now honor --track option even when
the upstream branch is local. Previously --track was silently ignored
when forking from a local branch. Also the command did not error out
when --track was explicitly asked for but the forked point specified
was not an existing branch (i.e. when there is no way to set up the
tracking configuration), but now it correctly does.
The configuration setting branch.autosetupmerge can now be set to
"always", which is equivalent to using --track from the command line.
Setting branch.autosetupmerge to "true" will retain the former behavior
of only setting up branch.*.merge for remote upstream branches.
Includes test cases for the new functionality.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This also changes it such that:
$ git checkout
will give the same information without changing branches. This is good
for finding out if the fetch you did recently had anything to say
about the branch you've been on, whose name you don't remember at the
moment.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Not terminating the options[] array with OPT_END can cause
usage ("git checkout -h") output to segfault.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When you are switching to a branch that is marked to merge from
somewhere else, e.g. when you have:
[branch "next"]
remote = upstream
merge = refs/heads/next
[remote "upstream"]
url = ...
fetch = refs/heads/*:refs/remotes/linus/*
and you say "git checkout next", the branch you checked out
may be behind, and you may want to update from the upstream
before continuing to work.
This patch makes the command to check the upstream (in this
example, "refs/remotes/linus/next") and our branch "next", and:
(1) if they match, nothing happens;
(2) if you are ahead (i.e. the upstream is a strict ancestor
of you), one line message tells you so;
(3) otherwise, you are either behind or you and the upstream
have forked. One line message will tell you which and
then you will see a "log --pretty=oneline --left-right".
We could enhance this with an option that tells the command to
check if there is no local change, and automatically fast
forward when you are truly behind. But I ripped out that change
because I was unsure what the right way should be to allow users
to control it (issues include that checkout should not become
automatically interactive).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The only differences in behavior should be:
- git checkout -m with non-trivial merging won't print out
merge-recursive messages (see the change in t7201-co.sh)
- git checkout -- paths... will give a sensible error message if
HEAD is invalid as a commit.
- some intermediate states which were written to disk in the shell
version (in particular, index states) are only kept in memory in
this version, and therefore these can no longer be revealed by
later write operations becoming impossible.
- when we change branches, we discard MERGE_MSG, SQUASH_MSG, and
rr-cache/MERGE_RR, like reset always has.
I'm not 100% sure I got the merge recursive setup exactly right; the
base for a non-trivial merge in the shell code doesn't seem
theoretically justified to me, but I tried to match it anyway, and the
tests all pass this way.
Other than these items, the results should be identical to the shell
version, so far as I can tell.
[jc: squashed lock-file fix from Dscho in]
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Linus Torvalds
Denis Cheng
Daniel Barkalow
Alex Riesen
Junio C Hamano
Jay Soffian