* ap/merge-backend-opts:
Document that merge strategies can now take their own options
Extend merge-subtree tests to test -Xsubtree=dir.
Make "subtree" part more orthogonal to the rest of merge-recursive.
pull: Fix parsing of -X<option>
Teach git-pull to pass -X<option> to git-merge
git merge -X<option>
git-merge-file --ours, --theirs
Conflicts:
git-compat-util.h
* jc/cache-unmerge:
rerere forget path: forget recorded resolution
rerere: refactor rerere logic to make it independent from I/O
rerere: remove silly 1024-byte line limit
resolve-undo: teach "update-index --unresolve" to use resolve-undo info
resolve-undo: "checkout -m path" uses resolve-undo information
resolve-undo: allow plumbing to clear the information
resolve-undo: basic tests
resolve-undo: record resolved conflicts in a new index extension section
builtin-merge.c: use standard active_cache macros
Conflicts:
builtin-ls-files.c
builtin-merge.c
builtin-rerere.c
This makes "subtree" more orthogonal to the rest of recursive merge, so
that you can use subtree and ours/theirs features at the same time. For
example, you can now say:
git merge -s subtree -Xtheirs other
to merge with "other" branch while shifting it up or down to match the
shape of the tree of the current branch, and resolving conflicts favoring
the changes "other" branch made over changes made in the current branch.
It also allows the prefix used to shift the trees to be specified using
the "-Xsubtree=$prefix" option. Giving an empty prefix tells the command
to figure out how much to shift trees automatically as we have always
done. "merge -s subtree" is the same as "merge -s recursive -Xsubtree="
(or "merge -s recursive -Xsubtree").
Based on an old patch done back in the days when git-merge was a script;
Avery ported the script part to builtin-merge.c. Bugs in shift_tree()
is mine.
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teach "-X <option>" command line argument to "git merge" that is passed to
strategy implementations. "ours" and "theirs" autoresolution introduced
by the previous commit can be asked to the recursive strategy.
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Various commands refuse to run in the presence of conflicts (commit,
merge, pull, cherry-pick/revert). They all used to provide rough, and
inconsistant error messages.
A new variable advice.resolveconflict is introduced, and allows more
verbose messages, pointing the user to the appropriate solution.
For commit, the error message used to look like this:
$ git commit
foo.txt: needs merge
foo.txt: unmerged (c34a92682e0394bc0d6f4d4a67a8e2d32395c169)
foo.txt: unmerged (3afcd75de8de0bb5076942fcb17446be50451030)
foo.txt: unmerged (c9785d77b76dfe4fb038bf927ee518f6ae45ede4)
error: Error building trees
The "need merge" line is given by refresh_cache. We add the IN_PORCELAIN
option to make the output more consistant with the other porcelain
commands, and catch the error in return, to stop with a clean error
message. The next lines were displayed by a call to cache_tree_update(),
which is not reached anymore if we noticed the conflict.
The new output looks like:
U foo.txt
fatal: 'commit' is not possible because you have unmerged files.
Please, fix them up in the work tree, and then use 'git add/rm <file>' as
appropriate to mark resolution and make a commit, or use 'git commit -a'.
Pull is slightly modified to abort immediately if $GIT_DIR/MERGE_HEAD
exists instead of waiting for merge to complain.
The behavior of merge and the test-case are slightly modified to reflect
the usual flow: start with conflicts, fix them, and afterwards get rid of
MERGE_HEAD, with different error messages at each stage.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When resolving a conflict using "git add" to create a stage #0 entry, or
"git rm" to remove entries at higher stages, remove_index_entry_at()
function is eventually called to remove unmerged (i.e. higher stage)
entries from the index. Introduce a "resolve_undo_info" structure and
keep track of the removed cache entries, and save it in a new index
extension section in the index_state.
Operations like "read-tree -m", "merge", "checkout [-m] <branch>" and
"reset" are signs that recorded information in the index is no longer
necessary. The data is removed from the index extension when operations
start; they may leave conflicted entries in the index, and later user
actions like "git add" will record their conflicted states afresh.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of using the low-level index_state interface, use the bog standard
active_cache and active_nr macros to access the cache entries when using the
default one.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This reverts commit c0ecb07048 "git-pull.sh:
Fix call to git-merge for new command format" and
commit b81e00a965 "git-merge: a deprecation
notice of the ancient command line syntax".
They caused a "git pull" (without any arguments, and without any local
commits---only to update to the other side) to warn that commit log
message is ignored because the merge resulted in a fast-forward.
Another possible solution is to add an extra option to "git merge" so that
"git pull" can tell it that the message given is not coming from the end
user (the canned message is passed just in case the merge resulted in a
non-ff and caused commit), but I think it is easier _not_ to deprecate the
old syntax.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce a command line option to override rerere.autoupdate configuration
variable to make it more useful.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
Prepare for 1.6.5.4
merge: do not add standard message when message is given with -m option
Do not misidentify "git merge foo HEAD" as an old-style invocation
Conflicts:
RelNotes
Even if the user explicitly gave her own message to "git merge", the
command still added its standard merge message. It resulted in a
useless repetition like this:
% git merge -m "Merge early part of side branch" `git rev-parse side~2`
% git show -s
commit 37217141e7519629353738d5e4e677a15096206f
Merge: e68e646 a1d2374
Author: しらいし ななこ <nanako3@lavabit.com>
Date: Wed Dec 2 14:33:20 2009 +0900
Merge early part of side branch
Merge commit 'a1d2374f8f52f4e8a53171601a920b538a6cec23'
The gave her own message because she didn't want git to add the
standard message (if she wanted to, she wouldn't have given one,
or she would have prepared it using git-fmt-merge-msg command).
Noticed by Nanako Shiraishi
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This was misinterpreted as an ancient style "git merge <message> HEAD
<commit> <commit>..." that merges one (or more) <commit> into the current
branch and record the resulting commit with the given message. Then a
later sanity check found that there is no <commit> specified and gave
a usage message.
Tested-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The ancient form of git merge command used in the original sample script
has been copied from Linus and are still found everywhere, I think, and
people may still have it in their scripts, but on the other hand, it is so
unintuitive that even people reasonably familiar with git are surprised by
accidentally triggering the support to parse this ancient form.
Gently nudge people to upgrade their script to more recent and readable
style for eventual removal of the original syntax.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
fadd069d03 (merge-recursive: give less scary messages when merge did not
start, Sep 7 2009) introduced some friendlier error message for merge
failure, but the messages were shown only for non-fast forward merges.
This patch uses the same for fast-forward.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* ko/master: (366 commits)
Update draft release notes to 1.6.6 before merging topics for -rc1
Makefile: do not clean arm directory
Add a notice that only certain functions can print color escape codes
builtin-apply.c: pay attention to -p<n> when determining the name
gitworkflows: Consistently back-quote git commands
Explicitly truncate bswap operand to uint32_t
t1200: fix a timing dependent error
Documentation: update descriptions of revision options related to '--bisect'
Enable support for IPv6 on MinGW
Refactor winsock initialization into a separate function
t/gitweb-lib: Split HTTP response with non-GNU sed
pack-objects: split implications of --all-progress from progress activation
instaweb: restart server if already running
prune-packed: only show progress when stderr is a tty
remote-curl.c: fix rpc_out()
Protect scripted Porcelains from GREP_OPTIONS insanity
mergetool--lib: simplify guess_merge_tool()
strbuf_add_wrapped_text(): skip over colour codes
t4014-format-patch: do not assume 'test' is available as non-builtin
Fix over-simplified documentation for 'git log -z'
...
We need to call exclude_cmds() after the loop, not during the loop, because
excluding a command from the array can change the indexes of objects in the
array. The result is that, depending on file ordering, some commands
weren't excluded as they should have been.
Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Builtins do not need to run setup_worktree() for themselves, since
the builtin machinery runs it for them.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For convenience in scripts and aliases, add the option
--ff-only to only allow fast-forwards (and up-to-date,
despite the name).
Disallow combining --ff-only and --no-ff, since they
flatly contradict each other.
Allow all other options to be combined with --ff-only
(i.e. do not add any code to handle them specially),
including the following options:
* --strategy (one or more): As long as the chosen merge
strategy results in up-to-date or fast-forward, the
command will succeed.
* --squash: I cannot imagine why anyone would want to
squash commits only if fast-forward is possible, but I
also see no reason why it should not be allowed.
* --message: The message will always be ignored, but I see
no need to explicitly disallow providing a redundant message.
Acknowledgements: I did look at Yuval Kogman's earlier
patch (107768 in gmane), mainly as shortcut to find my
way in the code, but I did not copy anything directly.
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
pretty_print_commit() has a bunch of rarely-used arguments, and
introducing more of them requires yet another update of all the call
sites. Refactor most of them into a struct to make future extensions
easier.
The ones that stay "plain" arguments were chosen on the grounds that
all callers put real arguments there, whereas some callers have 0/NULL
for all arguments that were factored into the struct.
We declare the struct 'const' to ensure none of the callers are bitten
by the changed (no longer call-by-value) semantics.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* js/run-command-updates:
api-run-command.txt: describe error behavior of run_command functions
run-command.c: squelch a "use before assignment" warning
receive-pack: remove unnecessary run_status report
run_command: report failure to execute the program, but optionally don't
run_command: encode deadly signal number in the return value
run_command: report system call errors instead of returning error codes
run_command: return exit code as positive value
MinGW: simplify waitpid() emulation macros
Previously when merging directly from a local tracking
branch like:
git merge origin/master
The merge message said:
Merge commit 'origin/master'
* commit 'origin/master':
...
Instead, let's be more explicit about what we are merging:
Merge remote branch 'origin/master'
* origin/master:
...
We accomplish this by recognizing remote tracking branches
in git-merge when we build the simulated FETCH_HEAD output
that we feed to fmt-merge-msg.
In addition to a new test in t7608, we have to tweak the
expected output of t3409, which does such a merge.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we have both a tag and a branch named "foo", then calling
"git merge foo" will warn about the ambiguous ref, but merge
the tag.
When generating the commit message, though, we simply
checked whether "refs/heads/foo" existed, and if it did,
assumed it was a branch. This led to the statement "Merge
branch 'foo'" in the commit message, which is quite wrong.
Instead, we should use dwim_ref to find the actual ref used,
and describe it appropriately.
In addition to the test in t7608, we must also tweak the
expected output of t4202, which was accidentally triggering
this bug.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* tr/die_errno:
Use die_errno() instead of die() when checking syscalls
Convert existing die(..., strerror(errno)) to die_errno()
die_errno(): double % in strerror() output just in case
Introduce die_errno() that appends strerror(errno) to die()
As a general guideline, functions in git's code return zero to indicate
success and negative values to indicate failure. The run_command family of
functions followed this guideline. But there are actually two different
kinds of failure:
- failures of system calls;
- non-zero exit code of the program that was run.
Usually, a non-zero exit code of the program is a failure and means a
failure to the caller. Except that sometimes it does not. For example, the
exit code of merge programs (e.g. external merge drivers) conveys
information about how the merge failed, and not all exit calls are
actually failures.
Furthermore, the return value of run_command is sometimes used as exit
code by the caller.
This change arranges that the exit code of the program is returned as a
positive value, which can now be regarded as the "result" of the function.
System call failures continue to be reported as negative values.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Lots of die() calls did not actually report the kind of error, which
can leave the user confused as to the real problem. Use die_errno()
where we check a system/library call that sets errno on failure, or
one of the following that wrap such calls:
Function Passes on error from
-------- --------------------
odb_pack_keep open
read_ancestry fopen
read_in_full xread
strbuf_read xread
strbuf_read_file open or strbuf_read_file
strbuf_readlink readlink
write_in_full xwrite
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change calls to die(..., strerror(errno)) to use the new die_errno().
In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are a few remaining ones, but this fixes the trivial ones. It boils
down to two main issues that sparse complains about:
- warning: Using plain integer as NULL pointer
Sparse doesn't like you using '0' instead of 'NULL'. For various good
reasons, not the least of which is just the visual confusion. A NULL
pointer is not an integer, and that whole "0 works as NULL" is a
historical accident and not very pretty.
A few of these remain: zlib is a total mess, and Z_NULL is just a 0.
I didn't touch those.
- warning: symbol 'xyz' was not declared. Should it be static?
Sparse wants to see declarations for any functions you export. A lack
of a declaration tends to mean that you should either add one, or you
should mark the function 'static' to show that it's in file scope.
A few of these remain: I only did the ones that should obviously just
be made static.
That 'wt_status_submodule_summary' one is debatable. It has a few related
flags (like 'wt_status_use_color') which _are_ declared, and are used by
builtin-commit.c. So maybe we'd like to export it at some point, but it's
not declared now, and not used outside of that file, so 'static' it is in
this patch.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The following is an easy mistake to make for users coming from version
control systems with an "update and commit"-style workflow.
1. git pull
2. resolve conflicts
3. git pull
Step 3 overrides MERGE_HEAD, starting a new merge with dirty index.
IOW, probably not what the user intended. Instead, refuse to merge
again if a merge is in progress.
Reported-by: Dave Olszewski <cxreg@pobox.com>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
To give OPT_FILENAME the prefix, we pass the prefix to parse_options()
which passes the prefix to parse_options_start() which sets the prefix
member of parse_opts_ctx accordingly. If there isn't a prefix in the
calling context, passing NULL will suffice.
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
grep: fix segfault when "git grep '('" is given
Documentation: fix a grammatical error in api-builtin.txt
builtin-merge: fix a typo in an error message
* maint-1.6.1:
grep: fix segfault when "git grep '('" is given
Documentation: fix a grammatical error in api-builtin.txt
builtin-merge: fix a typo in an error message
* maint-1.6.0:
grep: fix segfault when "git grep '('" is given
Documentation: fix a grammatical error in api-builtin.txt
builtin-merge: fix a typo in an error message
The function takes a user-supplied string that is supposed to be a branch
name, and puts it in a strbuf after expanding possible shorthand notation.
A handful of open coded sequence to do this in the existing code have been
changed to use this helper function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These allow you to say "git checkout @{-2}" to switch to the branch two
"branch switching" ago by pretending as if you typed the name of that
branch. As it is likely that we will be introducing more short-hands to
write the name of a branch without writing it explicitly, rename the
functions from "nth_last_branch" to more generic "branch_name", to prepare
for different semantics.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By having flags represented as bits in the new member variable 'flags',
it will be easier to use parse_options when dir_struct is involved.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1.6.2 will have @{-1} syntax advertised as "usable anywhere you can use
a branch name". However, "git merge @{-1}" did not work.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A function that runs a hook is used in several Git commands.
builtin-commit.c has the one that is most general for cases without
piping. The one in builtin-gc.c prints some useful warnings.
This patch moves a merged version of these variants into libgit and
lets the other builtins use this libified run_hook().
The run_hook() function used in receive-pack.c feeds the standard
input of the pre-receive or post-receive hooks. This function is
renamed to run_receive_hook() because the libified run_hook() cannot
handle this.
Mentored-by: Daniel Barkalow <barkalow@iabervon.org>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
