With one exception, we require the index to exactly match the
current HEAD commit at the time git merge is invoked. This
expectation was even documented in git-merge.txt until commit
ebef7e5 (Documentation: simplify How Merge Works, 2010-01-23).
Most merge strategies enforced this requirement, but it turns out
not all did. The current exceptions were the following two:
* ff updates
* octopus merges
ff updates actually will error out if the staged change is to a path
modified between HEAD and the commit being merged. If the path(s)
that are staged are files unrelated to the changes between these two
commits, though, then an ff update will just keep these staged
changes around after the merge. This is the one exception we
expected to the abort-merge-if- index-doesn't-match-HEAD rule.
For octopus merges, the rule should be enforced. Unfortunately, the
current behavior of the code is to ignore the difference and use the
staged changes in place of whatever is in HEAD as it proceeds to
perform the merge. So if the staged changes can be cleanly merged
with all the other heads, then the staged changes will just be
incorported into the resulting commit. If the staged changes cannot
be cleanly merged with all the other heads, the merge is not aborted
-- merge conflicts are simply reported as if HEAD had originally
contained whatever the index did.
Add testcases that check our expectations. A subsequent commit will
correct the erroneous octopus merge behavior.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Build updates for MSVC.
* ss/msvc:
MSVC: use shipped headers instead of fallback definitions
MSVC: vsnprintf in Visual Studio 2015 doesn't need SNPRINTF_SIZE_CORR any more
"git apply -v" learned to report paths in the patch that were
skipped via --include/--exclude mechanism or being outside the
current working directory.
* nd/apply-report-skip:
apply: report patch skipping in verbose mode
"git merge" used to allow merging two branches that have no common
base by default, which led to a brand new history of an existing
project created and then get pulled by an unsuspecting maintainer,
which allowed an unnecessary parallel history merged into the
existing project. The command has been taught not to allow this by
default, with an escape hatch "--allow-unrelated-histories" option
to be used in a rare event that merges histories of two projects
that started their lives independently.
* jc/merge-refuse-new-root:
merge: refuse to create too cool a merge by default
"git tag" can create an annotated tag without explicitly given an
"-a" (or "-s") option (i.e. when a tag message is given). A new
configuration variable, tag.forceSignAnnotated, can be used to tell
the command to create signed tag in such a situation.
* la/tag-force-signing-annotated-tags:
tag: add the option to force signing of annotated tags
"git -c credential.<var>=<value> submodule" can now be used to
propagate configuration variables related to credential helper
down to the submodules.
* jk/submodule-c-credential:
git_config_push_parameter: handle empty GIT_CONFIG_PARAMETERS
git: submodule honor -c credential.* from command line
quote: implement sq_quotef()
submodule: fix segmentation fault in submodule--helper clone
submodule: fix submodule--helper clone usage
submodule: check argc count for git submodule--helper clone
submodule: don't pass empty string arguments to submodule--helper clone
"git merge FETCH_HEAD" dereferenced NULL pointer when merging
nothing into an unborn history (which is arguably unusual usage,
which perhaps was the reason why nobody noticed it).
* jv/merge-nothing-into-void:
merge: fix NULL pointer dereference when merging nothing into void
When "git merge --squash" stopped due to conflict, the concluding
"git commit" failed to read in the SQUASH_MSG that shows the log
messages from all the squashed commits.
* ss/commit-squash-msg:
commit: do not lose SQUASH_MSG contents
"git rebase -x" can be used without passing "-i" option.
* sb/rebase-x:
t3404: cleanup double empty lines between tests
rebase: decouple --exec from --interactive
The tests that involve running httpd leaked the system-wide
configuration in /etc/gitconfig to the tested environment.
* jk/test-httpd-config-nosystem:
t/lib-httpd: pass through GIT_CONFIG_NOSYSTEM env
"git send-email" had trouble parsing alias file in mailrc format
when lines in it had trailing whitespaces on them.
* jk/send-email-rtrim-mailrc-alias:
send-email: ignore trailing whitespace in mailrc alias file
"git mergetool" did not work well with conflicts that both sides
deleted.
* da/mergetool-delete-delete-conflict:
mergetool: honor tempfile configuration when resolving delete conflicts
mergetool: support delete/delete conflicts
A major part of "git submodule update" has been ported to C to take
advantage of the recently added framework to run download tasks in
parallel.
* sb/submodule-parallel-update:
clone: allow an explicit argument for parallel submodule clones
submodule update: expose parallelism to the user
submodule helper: remove double 'fatal: ' prefix
git submodule update: have a dedicated helper for cloning
run_processes_parallel: rename parameters for the callbacks
run_processes_parallel: treat output of children as byte array
submodule update: direct error message to stderr
fetching submodules: respect `submodule.fetchJobs` config option
submodule-config: drop check against NULL
submodule-config: keep update strategy around
The command line argument parser for "receive-pack" has been
rewritten to use parse-options.
* ss/receive-pack-parse-options:
builtin/receive-pack.c: use parse_options API
The startup_info data, which records if we are working inside a
repository (among other things), are now uniformly available to Git
subcommand implementations, and Git avoids attempting to touch
references when we are not in a repository.
* jk/startup-info:
use setup_git_directory() in test-* programs
grep: turn off gitlink detection for --no-index
mailmap: do not resolve blobs in a non-repository
remote: don't resolve HEAD in non-repository
setup: set startup_info->have_repository more reliably
setup: make startup_info available everywhere
A test for tags has been restructured so that more parts of it can
easily be run on a platform without a working GnuPG.
* es/test-gpg-tags:
t6302: skip only signed tags rather than all tests when GPG is missing
t6302: also test annotated in addition to signed tags
t6302: normalize names and descriptions of signed tags
lib-gpg: drop unnecessary "missing GPG" warning
strbuf_getwholeline() did not NUL-terminate the buffer on certain
corner cases in its error codepath.
* jk/getwholeline-getdelim-empty:
strbuf_getwholeline: NUL-terminate getdelim buffer on error
A small memory leak in an error codepath has been plugged in xdiff
code.
* rj/xdiff-prepare-plug-leak-on-error-codepath:
xdiff/xprepare: fix a memory leak
xdiff/xprepare: use the XDF_DIFF_ALG() macro to access flag bits
Fetching of history by naming a commit object name directly didn't
work across remote-curl transport.
* gf/fetch-pack-direct-object-fetch:
fetch-pack: update the documentation for "<refs>..." arguments
fetch-pack: fix object_id of exact sha1
The "--local-env-vars" and "--resolve-git-dir" options of "git
rev-parse" failed to work outside a repository when the command's
option parsing was rewritten in 1.8.5 era.
* jk/rev-parse-local-env-vars:
rev-parse: let some options run outside repository
t1515: add tests for rev-parse out-of-repo helpers
"git config --get-urlmatch", unlike other variants of the "git
config --get" family, did not signal error with its exit status
when there was no matching configuration.
* jk/config-get-urlmatch:
Documentation/git-config: fix --get-all description
Documentation/git-config: use bulleted list for exit codes
config: fail if --get-urlmatch finds no value
The credential.helper configuration variable is cumulative and
there is no good way to override it from the command line. As
a special case, giving an empty string as its value now serves
as the signal to clear the values specified in various files.
* jk/credential-clear-config:
credential: let empty credential specs reset helper list
The embedded args argv-array in the child process is used to build
the command line to run pack-objects instead of using a separate
array of strings.
* mp/upload-pack-use-embedded-args:
upload-pack: use argv_array for pack_objects
The end-user facing Porcelain level commands like "diff" and "log"
now enables the rename detection by default.
* mm/diff-renames-default:
diff: activate diff.renames by default
log: introduce init_log_defaults()
t: add tests for diff.renames (true/false/unset)
t4001-diff-rename: wrap file creations in a test
Documentation/diff-config: fix description of diff.renames
Fix a few broken links in README.md and also teach rpmbuild
that there is no README.
* mm/readme-markdown:
README.md: don't take 'commandname' literally
git.spec.in: use README.md, not README
The link to Documentation/git-commandname.txt was obviously broken.
Remove the link and make it clear that it is not a literal path name by
using *italics* in makdown.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The file was renamed in 4ad21f5 (README: use markdown syntax,
2016-02-25), but that commit forgot to update git.spec.in, which
caused the rpmbuild target in the Makefile to fail.
Reported-by: Ron Isaacson <isaacson.ljits@gmail.com>
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In MSVC2015 the behavior of vsnprintf was changed.
W/o this fix there is one character missing at the end.
Signed-off-by: Sven Strickroth <sven@cs-ware.de>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Acked-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
