Commit Graph

40345 Commits

Author SHA1 Message Date
Paul Tan
fcceef4e06 t4150: test applying StGit series
A StGit series is a directory containing a "series" file which begins
with the line:

	# This series applies on GIT commit XXXXX

where XXXXX is the commit ID that the patch series applies on. Every
following line names a patch in the directory to be applied.

Test that git-am, when given this "series" file, is able to detect it as
an StGit series and apply all the patches in the series.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 12:33:59 -07:00
Paul Tan
ab680dce2b am: teach StGit patch parser how to read from stdin
git-mailsplit, which splits mbox patches, will read the patch from stdin
when the filename is "-" or there are no files listed on the
command-line.

To be consistent with this behavior, teach the StGit patch parser to
read from stdin if the filename is "-" or no files are listed on the
command-line.

Based-on-patch-by: Chris Packham <judge.packham@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 12:33:24 -07:00
Karthik Nayak
69b1cf91e5 ref-filter: add 'ref-filter.h'
This is step one of creating a common library for 'for-each-ref',
'branch -l' and 'tag -l'. This creates a header file with the
functions and data structures that ref-filter will provide.
We move the data structures created in for-each-ref to this header
file.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:09 -07:00
Karthik Nayak
73079d21ec for-each-ref: rename variables called sort to sorting
Rename all the variables called sort to sorting to match the
function/structure name changes made in the previous patch.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:09 -07:00
Karthik Nayak
277b915715 for-each-ref: rename some functions and make them public
Rename some of the functions and make them publicly available.
This is a preparatory step for moving code from 'for-each-ref'
to 'ref-filter' to make meaningful, targeted services available to
other commands via public APIs.

Functions renamed are:
parse_atom()		-> 	parse_ref_filter_atom()
verify_format()		-> 	verify_ref_format()
get_value()		-> 	get_ref_atom_value()
grab_single_ref()	-> 	ref_filter_handler()
sort_refs()		->	ref_array_sort()
show_ref()		->	show_ref_array_item()
default_sort()		->	ref_default_sorting()
opt_parse_sort()	->	parse_opt_ref_sorting()
cmp_ref_sort()		->	cmp_ref_sorting()

Rename 'struct ref_sort' to 'struct ref_sorting' in this context.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:09 -07:00
Karthik Nayak
8e33678a26 for-each-ref: introduce 'ref_array_clear()'
Introduce and implement 'ref_array_clear()' which will free
all allocated memory for 'ref_array'.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:08 -07:00
Karthik Nayak
215b565126 for-each-ref: introduce new structures for better organisation
Introduce 'ref_filter_cbdata' which will hold 'ref_filter'
(conditions to filter the refs on) and 'ref_array' (the array
of ref_array_items). Modify the code to use these new structures.

This is a preparatory patch to eventually move code from 'for-each-ref'
to 'ref-filter' and make it publicly available.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:08 -07:00
Karthik Nayak
5879232090 for-each-ref: rename 'refinfo' to 'ref_array_item'
Rename 'refinfo' to 'ref_array_item' as a preparatory step for
introduction of new structures in the forthcoming patch.

Re-order the fields in 'ref_array_item' so that refname can be
eventually converted to a FLEX_ARRAY.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:08 -07:00
Karthik Nayak
fc80edcae1 for-each-ref: clean up code
In 'grab_single_ref()' remove the extra count variable 'cnt' and
use the variable 'grab_cnt' of structure 'grab_ref_cbdata' directly
instead.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:08 -07:00
Karthik Nayak
ed01e206ba for-each-ref: extract helper functions out of grab_single_ref()
Extract two helper functions out of grab_single_ref(). Firstly,
new_refinfo() which is used to allocate memory for a new refinfo
structure and copy the objectname, refname and flag to it.
Secondly, match_name_as_path() which when given an array of patterns
and the refname checks if the refname matches any of the patterns
given while the pattern is a pathname, also supports wildcard
characters.

This is a preperatory patch for restructuring 'for-each-ref' and
eventually moving most of it to 'ref-filter' to provide the
functionality to similar commands via public API's.

Helped-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:48:07 -07:00
Michael Rappazzo
16cf51c7a2 git-rebase--interactive.sh: add config option for custom instruction format
A config option 'rebase.instructionFormat' can override the
default 'oneline' format of the rebase instruction list.

Since the list is parsed using the left, right or boundary mark plus
the sha1, they are prepended to the instruction format.

Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-15 11:42:58 -07:00
Junio C Hamano
2c185f0476 Merge tag 'l10n-2.4-maint-de-updates' of git://github.com/git-l10n/git-po into maint
l10n-2.4-maint-de-updates

* tag 'l10n-2.4-maint-de-updates' of git://github.com/git-l10n/git-po:
  l10n: de.po: translation fix for fall-back to 3way merge
  l10n: de.po: punctuation fixes
  l10n: de.po: grammar fix
  l10n: de.po: change error message from "sagen" to "Meinten Sie"
2015-06-14 14:24:49 -07:00
Panagiotis Astithas
c54c7b376d hooks/pre-auto-gc: adjust power checking for newer OS X
The output of "pmset -g batt" changed at some point from "Currently
drawing from 'AC Power'" to the slightly different "Now drawing from
'AC Power'". Starting the match from "drawing" makes the check work
in both old and new versions of OS X.

Signed-off-by: Panagiotis Astithas <pastith@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-12 15:33:39 -07:00
Mike Hommey
58d121b22b Allow to control where the replace refs are looked for
It can be useful to have grafts or replace refs for specific use-cases while
keeping the default "view" of the repository pristine (or with a different
set of grafts/replace refs).

It is possible to use a different graft file with GIT_GRAFT_FILE, but while
replace refs are more powerful, they don't have an equivalent override.

Add a GIT_REPLACE_REF_BASE environment variable to control where git is
going to look for replace refs.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-12 15:28:17 -07:00
Nguyễn Thái Ngọc Duy
e1c1ab9d25 checkout: don't check worktrees when not necessary
When --patch or pathspecs are passed to git checkout, the working tree
will not be switching branch, so there's no need to check if the branch
that we are running checkout on is already checked out.

Original-patch-by: Spencer Baugh <sbaugh@catern.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-12 15:21:44 -07:00
Paul Tan
329af6ca7d t0302: "unreadable" test needs SANITY prereq
The test expects that "chmod -r ~/.git-credentials" would make it
unreadable to the user, and thus needs the SANITY prerequisite.

Reported-by: Jean-Yves LENHOF <jean-yves@lenhof.eu.org>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-12 13:57:51 -07:00
Michael J Gruber
a9845c5f50 l10n: de.po: translation fix for fall-back to 3way merge
The English version is correct, but misleading: It is not the 3way merge
that is being patched also, but that is being fallen back to also.

The German version translates the former meaning. Make it translate the
latter.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
2015-06-12 20:40:04 +02:00
Michael J Gruber
47a1657ab9 l10n: de.po: punctuation fixes
This respects the ellipsis style used in de.po.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
2015-06-12 20:40:04 +02:00
Michael J Gruber
872b1f26b8 l10n: de.po: grammar fix
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
2015-06-12 20:40:04 +02:00
Phillip Sz
39f9819931 l10n: de.po: change error message from "sagen" to "Meinten Sie"
We should not use "sagen" if someone has written something wrong.
Although it's "say" in English, we should not use it in German
and instead use our normal error message.

Signed-off-by: Phillip Sz <phillip.szelat@gmail.com>
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
2015-06-12 20:39:42 +02:00
Junio C Hamano
a5fe66802f Second half of seventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-11 09:35:25 -07:00
Junio C Hamano
e356158b4a Merge branch 'tb/complete-sequencing'
The bash completion script (in contrib/) learned a few options that
"git revert" takes.

* tb/complete-sequencing:
  completion: suggest sequencer commands for revert
2015-06-11 09:29:59 -07:00
Junio C Hamano
43262d8d65 Merge branch 'jk/squelch-missing-link-warning-for-unreachable'
Recent "git prune" traverses young unreachable objects to safekeep
old objects in the reachability chain from them, which sometimes
caused error messages that are unnecessarily alarming.

* jk/squelch-missing-link-warning-for-unreachable:
  suppress errors on missing UNINTERESTING links
  silence broken link warnings with revs->ignore_missing_links
  add quieter versions of parse_{tree,commit}
2015-06-11 09:29:59 -07:00
Junio C Hamano
0e04b248b5 Merge branch 'pt/pull-tests'
Add more test coverage to "git pull".

* pt/pull-tests:
  t5520: check reflog action in fast-forward merge
  t5521: test --dry-run does not make any changes
  t5520: test --rebase failure on unborn branch with index
  t5520: test --rebase with multiple branches
  t5520: test work tree fast-forward when fetch updates head
  t5520: test for failure if index has unresolved entries
  t5520: test no merge candidates cases
  t5520: prevent field splitting in content comparisons
2015-06-11 09:29:58 -07:00
Junio C Hamano
c491e9e456 Merge branch 'sb/glossary-submodule'
* sb/glossary-submodule:
  glossary: add "remote", "submodule", "superproject"
2015-06-11 09:29:57 -07:00
Junio C Hamano
7df5c978d5 Merge branch 'sb/submodule-doc-intro'
* sb/submodule-doc-intro:
  submodule doc: reorder introductory paragraphs
2015-06-11 09:29:56 -07:00
Junio C Hamano
dee47925c1 Merge branch 'jk/diagnose-config-mmap-failure'
The configuration reader/writer uses mmap(2) interface to access
the files; when we find a directory, it barfed with "Out of memory?".

* jk/diagnose-config-mmap-failure:
  xmmap(): drop "Out of memory?"
  config.c: rewrite ENODEV into EISDIR when mmap fails
  config.c: avoid xmmap error messages
  config.c: fix mmap leak when writing config
  read-cache.c: drop PROT_WRITE from mmap of index
2015-06-11 09:29:55 -07:00
Junio C Hamano
8f436d1374 Merge branch 'mt/p4-depotFile-at-version'
* mt/p4-depotFile-at-version:
  p4: retrieve the right revision of the file in UTF-16 codepath
2015-06-11 09:29:55 -07:00
Junio C Hamano
829f03e98c Merge branch 'mh/verify-lock-error-report'
Bring consistency to error reporting mechanism used in "refs" API.

* mh/verify-lock-error-report:
  ref_transaction_commit(): do not capitalize error messages
  verify_lock(): do not capitalize error messages
  verify_lock(): report errors via a strbuf
  verify_lock(): on errors, let the caller unlock the lock
  verify_lock(): return 0/-1 rather than struct ref_lock *
2015-06-11 09:29:54 -07:00
Junio C Hamano
db65170ee5 Merge branch 'jk/color-diff-plain-is-context'
"color.diff.plain" was a misnomer; give it 'color.diff.context' as
a more logical synonym.

* jk/color-diff-plain-is-context:
  diff.h: rename DIFF_PLAIN color slot to DIFF_CONTEXT
  diff: accept color.diff.context as a synonym for "plain"
2015-06-11 09:29:53 -07:00
Junio C Hamano
82b416e063 Merge branch 'jk/clone-dissociate'
Code clean-up.

* jk/clone-dissociate:
  clone: reorder --dissociate and --reference options
  clone: use OPT_STRING_LIST for --reference
2015-06-11 09:29:52 -07:00
Junio C Hamano
709cd912d4 Merge branch 'jc/diff-ws-error-highlight'
Allow whitespace breakages in deleted and context lines to be also
painted in the output.

* jc/diff-ws-error-highlight:
  diff.c: --ws-error-highlight=<kind> option
  diff.c: add emit_del_line() and emit_context_line()
  t4015: separate common setup and per-test expectation
  t4015: modernise style
2015-06-11 09:29:51 -07:00
Joe Cridge
ab7fade919 git-prompt.sh: document GIT_PS1_STATESEPARATOR
The environment variable GIT_PS1_STATESEPARATOR can be used to set the
separator between the branch name and the state symbols in the prompt.

At present the variable is not mentioned in the inline documentation which
makes it difficult for the casual user to identify.

Signed-off-by: Joe Cridge <joe.cridge@me.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-10 14:53:14 -07:00
Frans Klaver
d614f07549 doc: format-patch: fix typo
reroll count documentation states that v<n> will be pretended to the
filename. Judging by the examples that should have been 'prepended'.

Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-10 14:37:04 -07:00
Luke Diamand
1051ef0063 git-p4: fixing --changes-block-size handling
The --changes-block-size handling was intended to help when
a user has a limited "maxscanrows" (see "p4 group"). It used
"p4 changes -m $maxchanges" to limit the number of results.

Unfortunately, it turns out that the "maxscanrows" and "maxresults"
limits are actually applied *before* the "-m maxchanges" parameter
is considered (experimentally).

Fix the block-size handling so that it gets blocks of changes
limited by revision number ($Start..$Start+$N, etc). This limits
the number of results early enough that both sets of tests pass.

Note that many other Perforce operations can fail for the same
reason (p4 print, p4 files, etc) and it's probably not possible
to workaround this. In the real world, this is probably not
usually a problem.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-10 08:29:17 -07:00
Luke Diamand
eceafffbec git-p4: add tests for non-numeric revision range
Test that git-p4 can handle a sync with a non-numeric revision
range (e.g. a date).

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-10 08:29:10 -07:00
Erik Elfström
a93bedada8 setup: add gentle version of read_gitfile
read_gitfile will die on most error cases. This makes it unsuitable
for speculative calls. Extract the core logic and provide a gentle
version that returns NULL on failure.

The first usecase of the new gentle version will be to probe for
submodules during git clean.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Erik Elfström <erik.elfstrom@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-09 12:29:22 -07:00
Jeff King
0eeb077be7 index-pack: avoid excessive re-reading of pack directory
Since 45e8a74 (has_sha1_file: re-check pack directory before
giving up, 2013-08-30), we spend extra effort for
has_sha1_file to give the right answer when somebody else is
repacking. Usually this effort does not matter, because
after finding that the object does not exist, the next step
is usually to die().

However, some code paths make a large number of
has_sha1_file checks which are _not_ expected to return 1.
The collision test in index-pack.c is such a case. On a
local system, this can cause a performance slowdown of
around 5%. But on a system with high-latency system calls
(like NFS), it can be much worse.

This patch introduces a "quick" flag to has_sha1_file which
callers can use when they would prefer high performance at
the cost of false negatives during repacks. There may be
other code paths that can use this, but the index-pack one
is the most obviously critical, so we'll start with
switching that one.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-09 12:26:35 -07:00
SZEDER Gábor
fbfa0973fa commit: cope with scissors lines in commit message
The diff and submodule shortlog appended to the commit message template
by 'git commit --verbose' are not stripped when the commit message
contains an indented scissors line.

When cleaning up a commit message with 'git commit --verbose' or
'--cleanup=scissors' the code is careful and triggers only on a pure
scissors line, i.e. a line containing nothing but a comment character, a
space, and the scissors cut.  This is good, because people can embed
scissors lines in the commit message while using 'git commit --verbose',
and the text they write after their indented scissors line doesn't get
deleted.

While doing so, however, the cleanup function only looks at the first
line matching the scissors pattern and if it doesn't start at the
beginning of the line, then the function just returns without performing
any cleanup.  This is wrong, because a "real" scissors line added by
'git commit --verbose' might follow, and in that case the diff and
submodule shortlog get included in the commit message.

Fix this by changing the scissors pattern to match only at the beginning
of the line, yet be careful to catch scissors on the first line as well.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-09 12:09:44 -07:00
Ariel Faigon
0b1f688bf4 git-completion.tcsh: fix redirect with noclobber
tcsh users who happen to have 'set noclobber' elsewhere in their
~/.tcshrc or ~/.cshrc startup files get a 'File exist' error, and
the tcsh completion file doesn't get generated/updated.

Adding a `!` in the redirect works correctly for both clobber (default)
and 'set noclobber' users.

Reviewed-by: Christian Couder <christian.couder@gmail.com>
Signed-off-by: Ariel Faigon <github.2009@yendor.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-09 11:21:15 -07:00
Paul Tan
6ea3b67b4e am --abort: keep unrelated commits on unborn branch
Since 7b3b7e3 (am --abort: keep unrelated commits since the last failure
and warn, 2010-12-21), git-am would refuse to rewind HEAD if commits
were made since the last git-am failure. This check was implemented in
safe_to_abort(), which checked to see if HEAD's hash matched the
abort-safety file.

However, this check was skipped if the abort-safety file was empty,
which can happen if git-am failed while on an unborn branch. As such, if
any commits were made since then, they would be discarded. Fix this by
carrying on the abort safety check even if the abort-safety file is
empty.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:14:04 -07:00
Paul Tan
e06764c8eb am --abort: support aborting to unborn branch
When git-am is first run on an unborn branch, no ORIG_HEAD is created.
As such, any applied commits will remain even after a git am --abort.

To be consistent with the behavior of git am --abort when it is not run
from an unborn branch, we empty the index, and then destroy the branch
pointed to by HEAD if there is no ORIG_HEAD.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:10:45 -07:00
Paul Tan
20c3fe7621 am --abort: revert changes introduced by failed 3way merge
Even when a merge conflict occurs with am --3way, the index will be
modified with the results of any successfully merged files. These
changes to the index will not be reverted with a
"git read-tree --reset -u HEAD ORIG_HEAD", as git read-tree will not be
aware of how the current index differs from HEAD or ORIG_HEAD.

To fix this, we first reset any conflicting entries in the index. The
resulting index will contain the results of successfully merged files
introduced by the failed merge. We write this index to a tree, and then
use git read-tree to fast-forward this "index tree" back to ORIG_HEAD,
thus undoing all the changes from the failed merge.

When we are on an unborn branch, HEAD and ORIG_HEAD will not point to
valid trees. In this case, use an empty tree.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:09:20 -07:00
Paul Tan
f8da6801e2 am --skip: support skipping while on unborn branch
When git am --skip is run, git am will copy HEAD's tree entries to the
index with "git reset HEAD". However, on an unborn branch, HEAD does not
point to a tree, so "git reset HEAD" will fail.

Fix this by treating HEAD as en empty tree when we are on an unborn
branch.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:06:44 -07:00
Paul Tan
2c970c9ec3 am -3: support 3way merge on unborn branch
While on an unborn branch, git am -3 will fail to do a threeway merge as
it references HEAD as "our tree", but HEAD does not point to a valid
tree.

Fix this by using an empty tree as "our tree" when we are on an unborn
branch.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:06:09 -07:00
Paul Tan
88d5072466 am --skip: revert changes introduced by failed 3way merge
Even when a merge conflict occurs with am --3way, the index will be
modified with the results of any succesfully merged files (such as a new
file). These changes to the index will not be reverted with a
"git read-tree --reset -u HEAD HEAD", as git read-tree will not be aware
of how the current index differs from HEAD.

To fix this, we first reset any conflicting entries from the index. The
resulting index will contain the results of successfully merged files.
We write the index to a tree, then use git read-tree -m to fast-forward
the "index tree" back to HEAD, thus undoing all the changes from the
failed merge.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 13:05:43 -07:00
Paul Tan
1daaddd1d3 t4150: test applying StGit patch
By default, an StGit patch separates the subject from the commit message
and headers as follows:

	$subject

	From: $author_name <$author_email>

	$message
	---
	$diffstats

We test git-am's ability to detect such a patch as an StGit patch, and
its ability to be able to extract the commit author, date and message
from such a patch.

Based-on-patch-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 12:42:02 -07:00
Michael Haggerty
19bf6c9b34 fsck: report errors if reflog entries point at invalid objects
Previously, if a reflog entry's old or new SHA-1 was not resolvable to
an object, that SHA-1 was silently ignored. Instead, report such cases
as errors.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 12:40:36 -07:00
Michael Haggerty
d66ae59b8a fsck_handle_reflog_sha1(): new function
New function, extracted from fsck_handle_reflog_ent(). The extra
is_null_sha1() test for the new reference is currently unnecessary, as
reflogs are deleted when the reference itself is deleted. But it
doesn't hurt, either.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 12:37:32 -07:00
Michael Haggerty
501cf47cdd read_loose_refs(): treat NULL_SHA1 loose references as broken
NULL_SHA1 is used to indicate an "invalid object name" throughout our
code (and the code of other git implementations), so it is vastly more
likely that an on-disk reference was set to this value due to a
software bug than that NULL_SHA1 is the legitimate SHA-1 of an actual
object.  Therefore, if a loose reference has the value NULL_SHA1,
consider it to be broken.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08 10:35:41 -07:00