We have always had a nice way to reset a working tree to another state
while carrying our changes around: "git read-tree -u -m". Yes, it fails if
the target tree is different in the paths that are dirty in the working
tree, but this is how we used to switch branches in "git checkout", and it
worked fine.
However, perhaps exactly _because_ we've supported this from very early
on, another low-level command, namely "git reset", never did.
But as time went on, 'git reset' remains as a very common command, while
'git read-tree' is now a very odd and low-level plumbing thing that nobody
sane should ever use, because it only makes sense together with other
operations like either switching branches or just rewriting HEAD.
Which means that we have effectively lost the ability to do something very
common: jump to another point in time without always dropping all our
dirty state.
So add this kind of mode to "git reset", and since it merges your changes
to what you are resetting to, just call it that: "git reset --merge".
I've wanted this for a long time, since I very commonly carry a dirty
tree while working on things. My main 'Makefile' file quite often has the
next version already modified, and sometimes I have local modifications
that I don't want to commit, but I still do pulls and patch applications,
and occasionally want to do "git reset" to undo them - while still keeping
my local modifications.
(Maybe we could eventually change it to something like "if we have a
working tree, default to --merge, otherwise default to --mixed").
NOTE! This new mode is certainly not perfect. There's a few things to look
out for:
- if the index has unmerged entries, "--merge" will currently simply
refuse to reset ("you need to resolve your current index first").
You'll need to use "--hard" or similar in this case.
This is sad, because normally a unmerged index means that the working
tree file should have matched the source tree, so the correct action is
likely to make --merge reset such a path to the target (like --hard),
regardless of dirty state in-tree or in-index. But that's not how
read-tree has ever worked, so..
- "git checkout -m" actually knows how to do a three-way merge, rather
than refuse to update the working tree. So we do know how to do that,
and arguably that would be even nicer behavior.
At the same time it's also arguably true that there is a chance of loss
of state (ie you cannot get back to the original tree if the three-way
merge ends up resolving cleanly to no diff at all), so the "refuse to
do it" is in some respects the safer - but less user-friendly - option.
In other words, I think 'git reset --merge' could become a bit more
friendly, but this is already a big improvement. It allows you to undo a
recent commit without having to throw your current work away.
Yes, yes, with a dirty tree you could always do
git stash
git reset --hard
git stash apply
instead, but isn't "git reset --merge" a nice way to handle one particular
simple case?
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
--
Hmm? Maybe I'm the only one that does a lot of work with a dirty tree, and
sure, I can do other things like the "git stash" thing, or using "git
checkout" to actually create a new branch, and then playing games with
branch renaming etc to make it work like this one.
But I suspect others dislike how "git reset" works too. But see the
suggested improvements above.
builtin-reset.c | 26 ++++++++++++++++++--------
1 files changed, 18 insertions(+), 8 deletions(-)
* git://git.kernel.org/pub/scm/gitk/gitk:
gitk: Avoid handling the Return key twice in Add Branch
gitk: Show local changes properly when we have a path limit
gitk: Fix switch statement in parseviewargs
gitk: Index line[hnd]tag arrays by id rather than row number
The loop picks elements from @ARGV one by one, sifts them into arguments
meant for format-patch and the script itself, and pushes them to @files
and @rev_list_opts arrays. Pick elements from @ARGV starting at the
beginning using shift, instead of at the end using pop, as push appends
them to the end of the array.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In "common" man pages there is luckily no "NAME" anywhere except at
beginning of documents. If there is another "NAME", sed could
mis-select it and lead to common-cmds.h corruption. So better nail it
at beginning of line, which would reduce corruption chance.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* rs/strbuf-expand:
remove the unused files interpolate.c and interpolate.h
daemon: deglobalize variable 'directory'
daemon: inline fill_in_extra_table_entries()
daemon: use strbuf_expand() instead of interpolate()
merge-recursive: use strbuf_expand() instead of interpolate()
add strbuf_expand_dict_cb(), a helper for simple cases
* mv/clone-strbuf:
builtin_clone: use strbuf in cmd_clone()
builtin-clone: use strbuf in clone_local() and copy_or_link_directory()
builtin-clone: use strbuf in guess_dir_name()
* ph/send-email:
git send-email: ask less questions when --compose is used.
git send-email: add --annotate option
git send-email: interpret unknown files as revision lists
git send-email: make the message file name more specific.
* maint:
sha1_file.c: resolve confusion EACCES vs EPERM
sha1_file: avoid bogus "file exists" error message
git checkout: don't warn about unborn branch if -f is already passed
bash: offer refs instead of filenames for 'git revert'
bash: remove dashed command leftovers
git-p4: fix keyword-expansion regex
fast-export: use an unsorted string list for extra_refs
Add new testcase to show fast-export does not always exports all tags
An earlier commit 916d081 (Nicer error messages in case saving an object
to db goes wrong, 2006-11-09) confused EACCES with EPERM, the latter of
which is an unlikely error from mkstemp().
Signed-off-by: Sam Vilain <sam@vilain.net>
This avoids the following misleading error message:
error: unable to create temporary sha1 filename ./objects/15: File exists
mkstemp can fail for many reasons, one of which, ENOENT, can occur if
the directory for the temp file doesn't exist. create_tmpfile tried to
handle this case by always trying to mkdir the directory, even if it
already existed. This caused errno to be clobbered, so one cannot tell
why mkstemp really failed, and it truncated the buffer to just the
directory name, resulting in the strange error message shown above.
Note that in both occasions that I've seen this failure, it has not been
due to a missing directory, or bad permissions, but some other, unknown
mkstemp failure mode that did not occur when I ran git again. This code
could perhaps be made more robust by retrying mkstemp, in case it was a
transient failure.
Signed-off-by: Joey Hess <joey@kitenet.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I think it's unnecessary to warn that the checkout has been forced due to an
unborn current branch if -f has been explicitly passed. For one project, I am
using git-new-workdir to create workdirs from a bare repository whose HEAD is
set to an unborn branch, and this warning started to irritate me.
Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The completion script for 'git revert' currently offers options and
filenames. However, 'git revert' doesn't take any filenames from the
command line, but a single commit. Therefore, it's more sane to offer
refs instead.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sometimes it's handy to complete full refs, e.g. the user has some
refs outside of refs/{heads,remotes,tags} or the user wants to
complete some git command's special refs (like 'git show
refs/bisect/bad').
To do that, we check whether the ref to be completed starts with
'refs/' or is 'refs' (to reduce the risk of matching 'refs-'). If it
does, then we offer full refs for completion; otherwise everything
works as usual.
This way the impact on the common case is fairly small (hopefully not
many users have branches or tags starting with 'refs'), and in the
special case the cost of typing out 'refs' is bearable.
While at it, also remove the unused 'cmd' variable from '__git_refs'.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit 5a625b07 (bash: remove fetch, push, pull dashed form leftovers,
2008-10-03) did that already, but there were still some git-cmd left
here and there.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This text:
my $dir = $File::Find::dir;
return if ($dir !~ m,$options->{dirpat}$,);
was improperly converted to:
my $dir = $File$dir !~ m,$options->{dirpat}$,);
by the keyword identifier expansion code. Add a \n
to make sure the regex doesn't go across end-of-line
boundaries.
Signed-off-by: Pete Wyckoff <pw@padd.com>
Acked-by: Simon Hausmann <simon@lst.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I figured the sections might as well be in some order, so I chose alphabetical
but with "core" at the beginning. This should help people add new variables
in the right places.
Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The sed call used in compare_svn_head_with() uses the + quantifier, which
is not supported in the OSX version of sed. It is replaced by the
equivalent \{1,\}.
Signed-off-by: Marcel Koeppen <git-dev@marzelpan.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The original intention of 72909be (Add diff-option --ext-diff, 2007-06-30)
was to optionally allow the use of external diff viewer in "git log"
family (while keeping them disabled by default). It exposed the "allow
external diff" bit to the UI, but forgot to adjust the "git diff" codepath
that was set up to always allow use of the external diff viewer.
Noticed by Nazri Ramliy; tests by René Scharfe squashed in.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
See: http://www.washington.edu/pine/tech-notes/low-level.html
Entries with a fcc or comment field after the address weren't parsed
correctly.
Continuation lines, identified by leading spaces, were also not handled.
Distribution lists which had ( ) around a list of addresses did not have
the parenthesis removed.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'for-junio' of git://source.winehq.org/~julliard/git/git:
git.el: Allow to commit even if there are no marked files.
git.el: Add possibility to mark files directly in git-update-status-files.
git.el: Add an insert file command.
git.el: Never clear the status buffer, only update the files.
git.el: Fix git-amend-commit to support amending an initial commit.
git.el: Properly handle merge commits in git-amend-commit.
git.el: Simplify handling of merge heads in the commit log-edit buffer.
git.el: Remove the env parameter in git-call-process and git-call-process-string.
git.el: Improve error handling for commits.
The current "git bisect skip" syntax is "git bisect skip [<rev>...]"
so it's already possible to skip a range of revisions using
something like:
$ git bisect skip $(git rev-list A..B)
where A and B are the bounds of the range we want to skip.
This patch teaches "git bisect skip" to accept:
$ git bisect skip A..B
as an abbreviation for the former command.
This is done by checking each argument to see if it contains two
dots one after the other ('..'), and by expending it using
"git rev-list" if that is the case.
Note that this patch will not make "git bisect skip" accept all
that "git rev-list" accepts, as things like "^A B" for exemple
will not work. But things like "A B..C D E F.. ..G H...I" should
work as expected.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
