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Author SHA1 Message Date
brian m. carlson
b56867c986 Documentation: modernize cat-texi.perl
Good style for Perl includes using the strict and warnings pragmas, and
preferring lexical file handles over bareword file handles.  Using
lexical file handles necessitates being explicit when $_ is printed, so
that Perl does not get confused and instead print the glob ref.

The benefit of this modernization is that a formerly obscured bug is now
visible, which will be fixed in a followup patch.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-23 10:56:23 -08:00
brian m. carlson
f7bf8feaf5 Documentation: fix warning in cat-texi.perl
Newer versions of Perl produce the warning "Unescaped left brace in
regex is deprecated, passed through in regex" when an unescaped left
brace occurs in a regex.  Escape the brace to avoid this warning.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-23 10:56:21 -08:00
Jacob Keller
4a68748893 doc: add documentation for OPT_STRING_LIST
Commit c8ba163916 ("parse-options: add OPT_STRING_LIST helper",
2011-06-09) added the OPT_STRING_LIST as a way to accumulate a repeated
list of strings. However, this was not documented in the
api-parse-options documentation. Add documentation now so that future
developers may learn of its existence.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-19 13:10:09 -08:00
Stefan Beller
830c912a0e documentation: retire unfinished documentation
When looking for documentation for a specific function, you may be tempted
to run

  git -C Documentation grep index_name_pos

only to find the file technical/api-in-core-index.txt, which doesn't
help for understanding the given function. It would be better to not find
these functions in the documentation, such that people directly dive into
the code instead.

In the previous patches we have documented
* index_name_pos()
* remove_index_entry_at()
* add_[file_]to_index()
in cache.h

We already have documentation for:
* add_index_entry()
* read_index()

Which leaves us with a TODO for:
* cache -> the_index macros
* refresh_index()
* discard_index()
* ie_match_stat() and ie_modified(); how they are different and when to
  use which.
* write_index() that was renamed to write_locked_index
* cache_tree_invalidate_path()
* cache_tree_update()

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-19 12:18:43 -08:00
Jeff King
abd5a00268 clear_delta_base_cache(): don't modify hashmap while iterating
On Thu, Jan 19, 2017 at 03:03:46PM +0100, Ulrich Spörlein wrote:

> > I suspect the patch below may fix things for you. It works around it by
> > walking over the lru list (either is fine, as they both contain all
> > entries, and since we're clearing everything, we don't care about the
> > order).
>
> Confirmed. With the patch applied, I can import the whole 55G in one go
> without any crashes or aborts. Thanks much!

Thanks. Here it is rolled up with a commit message.

-- >8 --
Subject: clear_delta_base_cache(): don't modify hashmap while iterating

Removing entries while iterating causes fast-import to
access an already-freed `struct packed_git`, leading to
various confusing errors.

What happens is that clear_delta_base_cache() drops the
whole contents of the cache by iterating over the hashmap,
calling release_delta_base_cache() on each entry. That
function removes the item from the hashmap. The hashmap code
may then shrink the table, but the hashmap_iter struct
retains an offset from the old table.

As a result, the next call to hashmap_iter_next() may claim
that the iteration is done, even though some items haven't
been visited.

The only caller of clear_delta_base_cache() is fast-import,
which wants to clear the cache because it is discarding the
packed_git struct for its temporary pack. So by failing to
remove all of the entries, we still have references to the
freed packed_git.

To make things even more confusing, this doesn't seem to
trigger with the test suite, because it depends on
complexities like the size of the hash table, which entries
got cleared, whether we try to access them before they're
evicted from the cache, etc.

So I've been able to identify the problem with large
imports like freebsd's svn import, or a fast-export of
linux.git. But nothing that would be reasonable to run as
part of the normal test suite.

We can fix this easily by iterating over the lru linked list
instead of the hashmap. They both contain the same entries,
and we can use the "safe" variant of the list iterator,
which exists for exactly this case.

Let's also add a warning to the hashmap API documentation to
reduce the chances of getting bit by this again.

Reported-by: Ulrich Spörlein <uqs@freebsd.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-19 11:17:20 -08:00
Junio C Hamano
787f75f056 Sixth batch for 2.12 2017-01-18 15:15:36 -08:00
Junio C Hamano
6903f33c40 Merge branch 'sb/remove-gitview'
Retire long unused/unmaintained gitview from the contrib/ area.

* sb/remove-gitview:
  doc: git-gui browser does not default to HEAD
  doc: gitk: add the upstream repo location
  doc: gitk: remove gitview reference
  contrib: remove gitview
2017-01-18 15:12:18 -08:00
Junio C Hamano
0abfede3ae Merge branch 'js/asciidoctor-tweaks'
Adjust documentation to help AsciiDoctor render better while not
breaking the rendering done by AsciiDoc.

* js/asciidoctor-tweaks:
  asciidoctor: fix user-manual to be built by `asciidoctor`
  giteveryday: unbreak rendering with AsciiDoctor
2017-01-18 15:12:17 -08:00
Junio C Hamano
7cef7fadab Merge branch 'rh/mergetool-regression-fix'
"git mergetool" without any pathspec on the command line that is
run from a subdirectory became no-op in Git v2.11 by mistake, which
has been fixed.

* rh/mergetool-regression-fix:
  mergetool: fix running in subdir when rerere enabled
  mergetool: take the "-O" out of $orderfile
  t7610: add test case for rerere+mergetool+subdir bug
  t7610: spell 'git reset --hard' consistently
  t7610: don't assume the checked-out commit
  t7610: always work on a test-specific branch
  t7610: delete some now-unnecessary 'git reset --hard' lines
  t7610: run 'git reset --hard' after each test to clean up
  t7610: don't rely on state from previous test
  t7610: use test_when_finished for cleanup tasks
  t7610: move setup code to the 'setup' test case
  t7610: update branch names to match test number
  rev-parse doc: pass "--" to rev-parse in the --prefix example
  .mailmap: record canonical email for Richard Hansen
2017-01-18 15:12:16 -08:00
Junio C Hamano
fe9ec8bdf6 Merge branch 'bw/pathspec-cleanup'
Code clean-up in the pathspec API.

* bw/pathspec-cleanup:
  pathspec: rename prefix_pathspec to init_pathspec_item
  pathspec: small readability changes
  pathspec: create strip submodule slash helpers
  pathspec: create parse_element_magic helper
  pathspec: create parse_long_magic function
  pathspec: create parse_short_magic function
  pathspec: factor global magic into its own function
  pathspec: simpler logic to prefix original pathspec elements
  pathspec: always show mnemonic and name in unsupported_magic
  pathspec: remove unused variable from unsupported_magic
  pathspec: copy and free owned memory
  pathspec: remove the deprecated get_pathspec function
  ls-tree: convert show_recursive to use the pathspec struct interface
  dir: convert fill_directory to use the pathspec struct interface
  dir: remove struct path_simplify
  mv: remove use of deprecated 'get_pathspec()'
2017-01-18 15:12:15 -08:00
Junio C Hamano
74f7427f8a Merge branch 'ls/p4-retry-thrice'
A recent updates to "git p4" was not usable for older p4 but it
could be made to work with minimum changes.  Do so.

* ls/p4-retry-thrice:
  git-p4: do not pass '-r 0' to p4 commands
2017-01-18 15:12:12 -08:00
Junio C Hamano
55d128ae06 Merge branch 'bw/grep-recurse-submodules'
"git grep" has been taught to optionally recurse into submodules.

* bw/grep-recurse-submodules:
  grep: search history of moved submodules
  grep: enable recurse-submodules to work on <tree> objects
  grep: optionally recurse into submodules
  grep: add submodules as a grep source type
  submodules: load gitmodules file from commit sha1
  submodules: add helper to determine if a submodule is initialized
  submodules: add helper to determine if a submodule is populated
  real_path: canonicalize directory separators in root parts
  real_path: have callers use real_pathdup and strbuf_realpath
  real_path: create real_pathdup
  real_path: convert real_path_internal to strbuf_realpath
  real_path: resolve symlinks by hand
2017-01-18 15:12:11 -08:00
Lukas Puehringer
07d347cf9a builtin/tag: add --format argument for tag -v
Adding --format to git tag -v mutes the default output of the GPG
verification and instead prints the formatted tag object.
This allows callers to cross-check the tagname from refs/tags with
the tagname from the tag object header upon GPG verification.

The callback function for for_each_tag_name() didn't allow callers to
pass custom data to their callback functions. Add a new opaque pointer
to each_tag_name_fn's parameter to allow this.

Signed-off-by: Lukas Puehringer <luk.puehringer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-18 11:27:56 -08:00
Santiago Torres
ff3c8c8f12 builtin/verify-tag: add --format to verify-tag
Callers of verify-tag may want to cross-check the tagname from refs/tags
with the tagname from the tag object header upon GPG verification. This
is to avoid tag refs that point to an incorrect object.

Add a --format parameter to git verify-tag to print the formatted tag
object header in addition to or instead of the --verbose or --raw GPG
verification output.

Signed-off-by: Santiago Torres <santiago@nyu.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-17 16:10:22 -08:00
Junio C Hamano
3313b78c14 RelNotes: drop merge-later comments for maint
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-17 15:27:13 -08:00
Junio C Hamano
733671b0fd Merge branch 'maint' 2017-01-17 15:20:16 -08:00
Junio C Hamano
ad36dc8b4b Almost ready for 2.11.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-17 15:19:11 -08:00
Junio C Hamano
647a1bcf14 Merge branch 'mm/gc-safety-doc' into maint
Doc update.

* mm/gc-safety-doc:
  git-gc.txt: expand discussion of races with other processes
2017-01-17 15:19:11 -08:00
Junio C Hamano
f976c89a20 Merge branch 'mm/push-social-engineering-attack-doc' into maint
Doc update on fetching and pushing.

* mm/push-social-engineering-attack-doc:
  doc: mention transfer data leaks in more places
2017-01-17 15:19:10 -08:00
Junio C Hamano
d4a682d42f Merge branch 'ls/filter-process' into maint
Doc update.

* ls/filter-process:
  t0021: fix flaky test
  docs: warn about possible '=' in clean/smudge filter process values
2017-01-17 15:19:08 -08:00
Junio C Hamano
ef6e815133 Merge branch 'kh/tutorial-grammofix' into maint
* kh/tutorial-grammofix:
  doc: omit needless "for"
  doc: make the intent of sentence clearer
  doc: add verb in front of command to run
  doc: add articles (grammar)
2017-01-17 15:19:08 -08:00
Junio C Hamano
34d5a66a61 Merge branch 'lr/doc-fix-cet' into maint
* lr/doc-fix-cet:
  date-formats.txt: Typo fix
2017-01-17 15:19:08 -08:00
Junio C Hamano
48d23c12e7 Merge branch 'dt/smart-http-detect-server-going-away' into maint
When the http server gives an incomplete response to a smart-http
rpc call, it could lead to client waiting for a full response that
will never come.  Teach the client side to notice this condition
and abort the transfer.

An improvement counterproposal has failed.
cf. <20161114194049.mktpsvgdhex2f4zv@sigill.intra.peff.net>

* dt/smart-http-detect-server-going-away:
  upload-pack: optionally allow fetching any sha1
  remote-curl: don't hang when a server dies before any output
2017-01-17 15:19:03 -08:00
Junio C Hamano
bcaf277b4a Merge branch 'jk/quote-env-path-list-component' into maint
A recent update to receive-pack to make it easier to drop garbage
objects made it clear that GIT_ALTERNATE_OBJECT_DIRECTORIES cannot
have a pathname with a colon in it (no surprise!), and this in turn
made it impossible to push into a repository at such a path.  This
has been fixed by introducing a quoting mechanism used when
appending such a path to the colon-separated list.

* jk/quote-env-path-list-component:
  t5615-alternate-env: double-quotes in file names do not work on Windows
  t5547-push-quarantine: run the path separator test on Windows, too
  tmp-objdir: quote paths we add to alternates
  alternates: accept double-quoted paths
2017-01-17 15:11:06 -08:00
Junio C Hamano
9d2a24864e Merge branch 'ak/commit-only-allow-empty' into maint
"git commit --allow-empty --only" (no pathspec) with dirty index
ought to be an acceptable way to create a new commit that does not
change any paths, but it was forbidden, perhaps because nobody
needed it so far.

* ak/commit-only-allow-empty:
  commit: remove 'Clever' message for --only --amend
  commit: make --only --allow-empty work without paths
2017-01-17 15:11:03 -08:00
Junio C Hamano
5ce6f51ff7 Merge branch 'jk/http-walker-limit-redirect' into maint
Update the error messages from the dumb-http client when it fails
to obtain loose objects; we used to give sensible error message
only upon 404 but we now forbid unexpected redirects that needs to
be reported with something sensible.

* jk/http-walker-limit-redirect:
  http-walker: complain about non-404 loose object errors
  http: treat http-alternates like redirects
  http: make redirects more obvious
  remote-curl: rename shadowed options variable
  http: always update the base URL for redirects
  http: simplify update_url_from_redirect
2017-01-17 14:49:29 -08:00
Jeff King
1797dc5176 CodingGuidelines: clarify multi-line brace style
There are some "gray areas" around when to omit braces from
a conditional or loop body. Since that seems to have
resulted in some arguments, let's be a little more clear
about our preferred style.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-17 14:32:47 -08:00
Richard Hansen
874444b704 diff: document the format of the -O (diff.orderFile) file
Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-15 16:42:16 -08:00
Richard Hansen
1a5fccc0c2 diff: document behavior of relative diff.orderFile
Document that a relative pathname for diff.orderFile is interpreted as
relative to the top-level work directory.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-15 16:39:12 -08:00
Philip Oakley
3120925c25 doc: git-gui browser does not default to HEAD
37cd4f7 ("Document git-gui, git-citool as mainporcelain manual pages",
2007-06-21) documented the default, but was shortly followed by c52c945
("git-gui: Allow blame/browser subcommands on bare repositories",
2007-07-17) which, it would appear, as a side effect, removed that default.

Finally document that change.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-13 12:23:28 -08:00
Philip Oakley
b6ca73d9ad doc: gitk: add the upstream repo location
Match the 'git gui' information regarding the graphical browser
and its upstream location.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-13 12:22:43 -08:00
Philip Oakley
11d86965da doc: gitk: remove gitview reference
contrib/gitview has been removed. Remove the reference.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Reviewed-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-13 12:22:41 -08:00
Christian Couder
3f05402ac0 Documentation/bisect: improve on (bad|new) and (good|bad)
The following part of the description:

git bisect (bad|new) [<rev>]
git bisect (good|old) [<rev>...]

may be a bit confusing, as a reader may wonder if instead it should be:

git bisect (bad|good) [<rev>]
git bisect (old|new) [<rev>...]

Of course the difference between "[<rev>]" and "[<rev>...]" should hint
that there is a good reason for the way it is.

But we can further clarify and complete the description by adding
"<term-new>" and "<term-old>" to the "bad|new" and "good|old"
alternatives.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-13 11:15:38 -08:00
마누엘
03920ac69b asciidoctor: fix user-manual to be built by asciidoctor
The `user-manual.txt` is designed as a `book` but the `Makefile` wants
to build it as an `article`. This seems to be a problem when building
the documentation with `asciidoctor`. Furthermore the parts *Git
Glossary* and *Appendix B* had no subsections which is not allowed when
building with `asciidoctor`. So lets add a *dummy* section.

Signed-off-by: 마누엘 <nalla@hamal.uberspace.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-13 10:30:16 -08:00
Stefan Beller
fc01a5d26a submodule update documentation: don't repeat ourselves
The documentation for the `git submodule update` command, repeats itself
for each update option, "This is done when <option> is given, or no
option is given and `submodule.<name>.update` is set to <string>.

Avoid these repetitive clauses by stating the command line options take
precedence over configured options.

Also add 'none' to the list of options instead of mentioning it in the
following running text and split the list into two parts, one that is
accessible via the command line and one that is only reachable via the
configuration variables.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-12 14:19:32 -08:00
Stefan Beller
eb2f2f5f6a submodule documentation: add options to the subcommand
When reading up on a subcommand of `git submodule <subcommand>`,
it is convenient to have its options nearby and not just at the
top of the man page.  Add the options to each subcommand.

While at it, also document the `--checkout` option for `update`.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-12 14:19:32 -08:00
Vegard Nossum
c488867793 diff: add interhunk context config option
The --inter-hunk-context= option was added in commit 6d0e674a57
("diff: add option to show context between close hunks"). This patch
allows configuring a default for this option.

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-12 12:55:43 -08:00
SZEDER Gábor
c026557a37 versioncmp: generalize version sort suffix reordering
The 'versionsort.prereleaseSuffix' configuration variable, as its name
suggests, is supposed to only deal with tagnames with prerelease
suffixes, and allows sorting those prerelease tags in a user-defined
order before the suffixless main release tag, instead of sorting them
simply lexicographically.

However, the previous changes in this series resulted in an
interesting and useful property of version sort:

  - The empty string as a configured suffix matches all tagnames,
    including tagnames without any suffix, but

  - tagnames containing a "real" configured suffix are still ordered
    according to that real suffix, because any longer suffix takes
    precedence over the empty string.

Exploiting this property we can easily generalize suffix reordering
and specify the order of tags with given suffixes not only before but
even after a main release tag by using the empty suffix to denote the
position of the main release tag, without any algorithm changes:

  $ git -c versionsort.prereleaseSuffix=-alpha \
        -c versionsort.prereleaseSuffix=-beta \
        -c versionsort.prereleaseSuffix="" \
        -c versionsort.prereleaseSuffix=-gamma \
        -c versionsort.prereleaseSuffix=-delta \
        tag -l --sort=version:refname 'v3.0*'
  v3.0-alpha1
  v3.0-beta1
  v3.0
  v3.0-gamma1
  v3.0-delta1

Since 'versionsort.prereleaseSuffix' is not a fitting name for a
configuration variable to control this more general suffix reordering,
introduce the new variable 'versionsort.suffix'.  Still keep the old
configuration variable name as a deprecated alias, though, to avoid
suddenly breaking setups already using it.  Ignore the old variable if
both old and new configuration variables are set, but emit a warning
so users will be aware of it and can fix their configuration.  Extend
the documentation to describe and add a test to check this more
general behavior.

Note: since the empty suffix matches all tagnames, tagnames with
suffixes not included in the configuration are listed together with
the suffixless main release tag, ordered lexicographically right after
that, i.e. before tags with suffixes listed in the configuration
following the empty suffix.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-12 12:25:24 -08:00
Junio C Hamano
d7dffce1ce Fifth batch 2.12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 15:25:46 -08:00
Junio C Hamano
da2b74eeec Merge branch 'sb/submodule-embed-gitdir'
A new submodule helper "git submodule embedgitdirs" to make it
easier to move embedded .git/ directory for submodules in a
superproject to .git/modules/ (and point the latter with the former
that is turned into a "gitdir:" file) has been added.

* sb/submodule-embed-gitdir:
  worktree: initialize return value for submodule_uses_worktrees
  submodule: add absorb-git-dir function
  move connect_work_tree_and_git_dir to dir.h
  worktree: check if a submodule uses worktrees
  test-lib-functions.sh: teach test_commit -C <dir>
  submodule helper: support super prefix
  submodule: use absolute path for computing relative path connecting
2017-01-10 15:24:28 -08:00
Junio C Hamano
2ced5f2c2d Merge branch 'jc/retire-compaction-heuristics'
"git diff" and its family had two experimental heuristics to shift
the contents of a hunk to make the patch easier to read.  One of
them turns out to be better than the other, so leave only the
"--indent-heuristic" option and remove the other one.

* jc/retire-compaction-heuristics:
  diff: retire "compaction" heuristics
2017-01-10 15:24:27 -08:00
Junio C Hamano
33cf69403c Merge branch 'jc/abbrev-autoscale-config'
Recent update to the default abbreviation length that auto-scales
lacked documentation update, which has been corrected.

* jc/abbrev-autoscale-config:
  config.abbrev: document the new default that auto-scales
2017-01-10 15:24:26 -08:00
Junio C Hamano
d984592043 Merge branch 'dt/smart-http-detect-server-going-away'
When the http server gives an incomplete response to a smart-http
rpc call, it could lead to client waiting for a full response that
will never come.  Teach the client side to notice this condition
and abort the transfer.

An improvement counterproposal has failed.
cf. <20161114194049.mktpsvgdhex2f4zv@sigill.intra.peff.net>

* dt/smart-http-detect-server-going-away:
  upload-pack: optionally allow fetching any sha1
  remote-curl: don't hang when a server dies before any output
2017-01-10 15:24:25 -08:00
Junio C Hamano
979b82f19f Merge branch 'mm/gc-safety-doc'
Doc update.

* mm/gc-safety-doc:
  git-gc.txt: expand discussion of races with other processes
2017-01-10 15:24:25 -08:00
Junio C Hamano
5f52e70879 Merge branch 'mm/push-social-engineering-attack-doc'
Doc update on fetching and pushing.

* mm/push-social-engineering-attack-doc:
  doc: mention transfer data leaks in more places
2017-01-10 15:24:24 -08:00
Richard Hansen
11873b438f rev-parse doc: pass "--" to rev-parse in the --prefix example
The "--" argument avoids "ambiguous argument: unknown revision or
path not in the working tree" errors when a pathname argument refers
to a non-existent file.

The "--" passed explicitly to set was removed because rev-parse
outputs the "--" argument that it is given.

Signed-off-by: Richard Hansen <hansenr@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 13:22:19 -08:00
Karthik Nayak
3a42980f9e ref-filter: Do not abruptly die when using the 'lstrip=<N>' option
Currently when we use the 'lstrip=<N>' option, if 'N' is greater than
the number of components available in the refname, we abruptly end
program execution by calling die().

This behavior is undesired since a single refname with few components
could end program execution. To avoid this, return an empty string
whenever the value 'N' is greater than the number of components
available, instead of calling die().

Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
17938f171f ref-filter: rename the 'strip' option to 'lstrip'
In preparation for the upcoming patch, where we introduce the 'rstrip'
option. Rename the 'strip' option to 'lstrip' to remove ambiguity.

Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
3ba308cb4b ref-filter: make remote_ref_atom_parser() use refname_atom_parser_internal()
Use the recently introduced refname_atom_parser_internal() within
remote_ref_atom_parser(), this provides a common base for all the ref
printing atoms, allowing %(upstream) and %(push) to also use the
':strip' option.

The atoms '%(push)' and '%(upstream)' will retain the ':track' and
':trackshort' atom modifiers to themselves as they have no meaning in
context to the '%(refname)' and '%(symref)' atoms.

Update the documentation and tests to reflect the same.

Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
a798410184 ref-filter: introduce refname_atom_parser()
Using refname_atom_parser_internal(), introduce refname_atom_parser()
which will parse the %(symref) and %(refname) atoms. Store the parsed
information into the 'used_atom' structure based on the modifiers used
along with the atoms.

Now the '%(symref)' atom supports the ':strip' atom modifier. Update the
Documentation and tests to reflect this.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
7743fcca5b ref-filter: add support for %(upstream:track,nobracket)
Add support for %(upstream:track,nobracket) which will print the
tracking information without the brackets (i.e. "ahead N, behind M").
This is needed when we port branch.c to use ref-filter's printing APIs.

Add test and documentation for the same.

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
ffd921d311 ref-filter: make %(upstream:track) prints "[gone]" for invalid upstreams
Borrowing from branch.c's implementation print "[gone]" whenever an
unknown upstream ref is encountered instead of just ignoring it.

This makes sure that when branch.c is ported over to using ref-filter
APIs for printing, this feature is not lost.

Make changes to t/t6300-for-each-ref.sh and
Documentation/git-for-each-ref.txt to reflect this change.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Helped-by : Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
42d0eb05ee ref-filter: modify "%(objectname:short)" to take length
Add support for %(objectname:short=<length>) which would print the
abbreviated unique objectname of given length. When no length is
specified, the length is 'DEFAULT_ABBREV'. The minimum length is
'MINIMUM_ABBREV'. The length may be exceeded to ensure that the
provided object name is unique.

Add tests and documentation for the same.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Helped-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
4f3e3b37fa ref-filter: implement %(if:equals=<string>) and %(if:notequals=<string>)
Implement %(if:equals=<string>) wherein the if condition is only
satisfied if the value obtained between the %(if:...) and %(then) atom
is the same as the given '<string>'.

Similarly, implement (if:notequals=<string>) wherein the if condition
is only satisfied if the value obtained between the %(if:...) and
%(then) atom is different from the given '<string>'.

This is done by introducing 'if_atom_parser()' which parses the given
%(if) atom and then stores the data in used_atom which is later passed
on to the used_atom of the %(then) atom, so that it can do the required
comparisons.

Add tests and documentation for the same.

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:31 -08:00
Karthik Nayak
c58492d434 ref-filter: implement %(if), %(then), and %(else) atoms
Implement %(if), %(then) and %(else) atoms. Used as
%(if)...%(then)...%(end) or %(if)...%(then)...%(else)...%(end). If the
format string between %(if) and %(then) expands to an empty string, or
to only whitespaces, then the whole %(if)...%(end) expands to the string
following %(then). Otherwise, it expands to the string following
%(else), if any. Nesting of this construct is possible.

This is in preparation for porting over `git branch -l` to use
ref-filter APIs for printing.

Add documentation and tests regarding the same.

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-10 12:44:30 -08:00
Brandon Williams
34305f7753 pathspec: remove the deprecated get_pathspec function
Now that all callers of the old 'get_pathspec' interface have been
migrated to use the new pathspec struct interface it can be removed
from the codebase.

Since there are no more users of the '_raw' field in the pathspec struct
it can also be removed.  This patch also removes the old functionality
of modifying the const char **argv array that was passed into
parse_pathspec.  Instead the constructed 'match' string (which is a
pathspec element with the prefix prepended) is only stored in its
corresponding pathspec_item entry.

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-08 18:04:17 -08:00
Johannes Schindelin
9574901c02 giteveryday: unbreak rendering with AsciiDoctor
The "giteveryday" document has a callout list that contains a code
block. This is not a problem for AsciiDoc, but AsciiDoctor sadly was
explicitly designed *not* to render this correctly [*1*]. The symptom is
an unhelpful

	line 322: callout list item index: expected 1 got 12
	line 325: no callouts refer to list item 1
	line 325: callout list item index: expected 2 got 13
	line 327: no callouts refer to list item 2

In Git for Windows, we rely on the speed improvement of AsciiDoctor (on
this developer's machine, `make -j15 html` takes roughly 30 seconds with
AsciiDoctor, 70 seconds with AsciiDoc), therefore we need a way to
render this correctly.

The easiest way out is to simplify the callout list, as suggested by
AsciiDoctor's author, even while one may very well disagree with him
that a code block hath no place in a callout list.

*1*: https://github.com/asciidoctor/asciidoctor/issues/1478

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 14:03:40 -08:00
Igor Kushnir
bc233524c9 git-p4: do not pass '-r 0' to p4 commands
git-p4 crashes when used with a very old p4 client version
that does not support the '-r <number>' option in its commands.

Allow making git-p4 work with old p4 clients by setting git-p4.retries to 0.

Alternatively git-p4.retries could be made opt-in.
But since only very old, barely maintained p4 versions don't support
the '-r' option, the setting-retries-to-0 workaround would do.

The "-r retries" option is present in Perforce 2012.2 Command Reference,
but absent from Perforce 2012.1 Command Reference.

Signed-off-by: Igor Kushnir <igorkuo@gmail.com>
Acked-by: Lars Schneider <larsxschneider@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-29 13:54:05 -08:00
Junio C Hamano
e05806da9e Fourth batch for 2.12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-27 09:17:51 -08:00
Junio C Hamano
ad1b4e2c0e Merge branch 'lt/shortlog-by-committer'
"git shortlog" learned "--committer" option to group commits by
committer, instead of author.

* lt/shortlog-by-committer:
  t4201: make tests work with and without the MINGW prerequiste
  shortlog: test and document --committer option
  shortlog: group by committer information
2016-12-27 00:11:44 -08:00
Junio C Hamano
08721a056b Merge branch 'ls/filter-process'
Doc update.

* ls/filter-process:
  t0021: fix flaky test
  docs: warn about possible '=' in clean/smudge filter process values
2016-12-27 00:11:42 -08:00
Junio C Hamano
9d540e9726 Merge branch 'bw/transport-protocol-policy'
Finer-grained control of what protocols are allowed for transports
during clone/fetch/push have been enabled via a new configuration
mechanism.

* bw/transport-protocol-policy:
  http: respect protocol.*.allow=user for http-alternates
  transport: add from_user parameter to is_transport_allowed
  http: create function to get curl allowed protocols
  transport: add protocol policy config option
  http: always warn if libcurl version is too old
  lib-proto-disable: variable name fix
2016-12-27 00:11:41 -08:00
Junio C Hamano
05f6e1be8c Merge branch 'cp/merge-continue'
"git merge --continue" has been added as a synonym to "git commit"
to conclude a merge that has stopped due to conflicts.

* cp/merge-continue:
  merge: mark usage error strings for translation
  merge: ensure '--abort' option takes no arguments
  completion: add --continue option for merge
  merge: add '--continue' option as a synonym for 'git commit'
2016-12-27 00:11:41 -08:00
Junio C Hamano
95d0367b2e Merge branch 'sb/submodule-config-cleanup'
Minor code clean-up.

* sb/submodule-config-cleanup:
  submodule-config: clarify parsing of null_sha1 element
  submodule-config: rename commit_sha1 to treeish_name
  submodule config: inline config_from_{name, path}
2016-12-27 00:11:40 -08:00
Junio C Hamano
3cde4e02ee diff: retire "compaction" heuristics
When a patch inserts a block of lines, whose last lines are the
same as the existing lines that appear before the inserted block,
"git diff" can choose any place between these existing lines as the
boundary between the pre-context and the added lines (adjusting the
end of the inserted block as appropriate) to come up with variants
of the same patch, and some variants are easier to read than others.

We have been trying to improve the choice of this boundary, and Git
2.11 shipped with an experimental "compaction-heuristic".  Since
then another attempt to improve the logic further resulted in a new
"indent-heuristic" logic.  It is agreed that the latter gives better
result overall, and the former outlived its usefulness.

Retire "compaction", and keep "indent" as an experimental feature.
The latter hopefully will be turned on by default in a future
release, but that should be done as a separate step.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-23 12:32:22 -08:00
Junio C Hamano
48d5014dd4 config.abbrev: document the new default that auto-scales
We somehow forgot to update the "default is 7" in the
documentation.  Also give a way to explicitly ask the auto-scaling
by setting config.abbrev to "auto".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 13:17:15 -08:00
Brandon Williams
74ed43711f grep: enable recurse-submodules to work on <tree> objects
Teach grep to recursively search in submodules when provided with a
<tree> object. This allows grep to search a submodule based on the state
of the submodule that is present in a commit of the super project.

When grep is provided with a <tree> object, the name of the object is
prefixed to all output.  In order to provide uniformity of output
between the parent and child processes the option `--parent-basename`
has been added so that the child can preface all of it's output with the
name of the parent's object instead of the name of the commit SHA1 of
the submodule. This changes output from the command
`git grep -e. -l --recurse-submodules HEAD` from:

      HEAD:file
      <commit sha1 of submodule>:sub/file

to:

      HEAD:file
      HEAD:sub/file

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00
Brandon Williams
0281e487fd grep: optionally recurse into submodules
Allow grep to recognize submodules and recursively search for patterns in
each submodule.  This is done by forking off a process to recursively
call grep on each submodule.  The top level --super-prefix option is
used to pass a path to the submodule which can in turn be used to
prepend to output or in pathspec matching logic.

Recursion only occurs for submodules which have been initialized and
checked out by the parent project.  If a submodule hasn't been
initialized and checked out it is simply skipped.

In order to support the existing multi-threading infrastructure in grep,
output from each child process is captured in a strbuf so that it can be
later printed to the console in an ordered fashion.

To limit the number of theads that are created, each child process has
half the number of threads as its parents (minimum of 1), otherwise we
potentailly have a fork-bomb.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22 11:47:33 -08:00
Junio C Hamano
1d1bdafd64 Third batch for 2.12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-21 14:57:26 -08:00
Junio C Hamano
fe05033407 Merge branch 'jk/quote-env-path-list-component'
A recent update to receive-pack to make it easier to drop garbage
objects made it clear that GIT_ALTERNATE_OBJECT_DIRECTORIES cannot
have a pathname with a colon in it (no surprise!), and this in turn
made it impossible to push into a repository at such a path.  This
has been fixed by introducing a quoting mechanism used when
appending such a path to the colon-separated list.

* jk/quote-env-path-list-component:
  t5615-alternate-env: double-quotes in file names do not work on Windows
  t5547-push-quarantine: run the path separator test on Windows, too
  tmp-objdir: quote paths we add to alternates
  alternates: accept double-quoted paths
2016-12-21 14:55:02 -08:00
Junio C Hamano
6610af872f Second batch for 2.12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-19 14:50:31 -08:00
Junio C Hamano
f0e0955a99 Merge branch 'kh/tutorial-grammofix'
* kh/tutorial-grammofix:
  doc: omit needless "for"
  doc: make the intent of sentence clearer
  doc: add verb in front of command to run
  doc: add articles (grammar)
2016-12-19 14:45:41 -08:00
Junio C Hamano
b07c4e9b24 Merge branch 'lr/doc-fix-cet'
* lr/doc-fix-cet:
  date-formats.txt: Typo fix
2016-12-19 14:45:41 -08:00
Junio C Hamano
06cd5a1e01 Merge branch 'nd/rebase-forget'
"git rebase" learned "--quit" option, which allows a user to
remove the metadata left by an earlier "git rebase" that was
manually aborted without using "git rebase --abort".

* nd/rebase-forget:
  rebase: add --quit to cleanup rebase, leave everything else untouched
2016-12-19 14:45:35 -08:00
Junio C Hamano
f008159fc2 Merge branch 'jk/trailers-placeholder-in-pretty'
In addition to %(subject), %(body), "log --pretty=format:..."
learned a new placeholder %(trailers).

* jk/trailers-placeholder-in-pretty:
  ref-filter: add support to display trailers as part of contents
  pretty: add %(trailers) format for displaying trailers of a commit message
2016-12-19 14:45:34 -08:00
Junio C Hamano
3aead1cad7 Merge branch 'ak/commit-only-allow-empty'
"git commit --allow-empty --only" (no pathspec) with dirty index
ought to be an acceptable way to create a new commit that does not
change any paths, but it was forbidden, perhaps because nobody
needed it so far.

* ak/commit-only-allow-empty:
  commit: remove 'Clever' message for --only --amend
  commit: make --only --allow-empty work without paths
2016-12-19 14:45:34 -08:00
Junio C Hamano
8a2882f23e Merge branch 'jk/http-walker-limit-redirect-2.9'
Transport with dumb http can be fooled into following foreign URLs
that the end user does not intend to, especially with the server
side redirects and http-alternates mechanism, which can lead to
security issues.  Tighten the redirection and make it more obvious
to the end user when it happens.

* jk/http-walker-limit-redirect-2.9:
  http: treat http-alternates like redirects
  http: make redirects more obvious
  remote-curl: rename shadowed options variable
  http: always update the base URL for redirects
  http: simplify update_url_from_redirect
2016-12-19 14:45:32 -08:00
Junio C Hamano
73e494f862 Merge branch 'nd/for-each-ref-ignore-case'
"git branch --list" and friends learned "--ignore-case" option to
optionally sort branches and tags case insensitively.

* nd/for-each-ref-ignore-case:
  tag, branch, for-each-ref: add --ignore-case for sorting and filtering
2016-12-19 14:45:31 -08:00
Junio C Hamano
eff96d7e16 First batch for 2.12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 15:30:13 -08:00
Junio C Hamano
2a72b69407 Merge branch 'ls/p4-retry-thrice'
* ls/p4-retry-thrice:
  git-p4: add config to retry p4 commands; retry 3 times by default
2016-12-16 15:27:50 -08:00
Junio C Hamano
031b5a9ad3 Merge branch 'ld/p4-update-shelve'
* ld/p4-update-shelve:
  git-p4: support updating an existing shelved changelist
2016-12-16 15:27:49 -08:00
Junio C Hamano
97c138fe4e Merge branch 'vk/p4-submit-shelve'
* vk/p4-submit-shelve:
  git-p4: allow submit to create shelved changelists.
2016-12-16 15:27:49 -08:00
Jeff King
03f40829ad shortlog: test and document --committer option
This puts the final touches on the feature added by
fbfda15fb8 (shortlog: group by committer information,
2016-10-11).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-16 09:39:10 -08:00
Brandon Williams
f1762d772e transport: add protocol policy config option
Previously the `GIT_ALLOW_PROTOCOL` environment variable was used to
specify a whitelist of protocols to be used in clone/fetch/push
commands.  This patch introduces new configuration options for more
fine-grained control for allowing/disallowing protocols.  This also has
the added benefit of allowing easier construction of a protocol
whitelist on systems where setting an environment variable is
non-trivial.

Now users can specify a policy to be used for each type of protocol via
the 'protocol.<name>.allow' config option.  A default policy for all
unconfigured protocols can be set with the 'protocol.allow' config
option.  If no user configured default is made git will allow known-safe
protocols (http, https, git, ssh, file), disallow known-dangerous
protocols (ext), and have a default policy of `user` for all other
protocols.

The supported policies are `always`, `never`, and `user`.  The `user`
policy can be used to configure a protocol to be usable when explicitly
used by a user, while disallowing it for commands which run
clone/fetch/push commands without direct user intervention (e.g.
recursive initialization of submodules).  Commands which can potentially
clone/fetch/push from untrusted repositories without user intervention
can export `GIT_PROTOCOL_FROM_USER` with a value of '0' to prevent
protocols configured to the `user` policy from being used.

Fix remote-ext tests to use the new config to allow the ext
protocol to be tested.

Based on a patch by Jeff King <peff@peff.net>

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-15 09:29:13 -08:00
Chris Packham
367ff69428 merge: add '--continue' option as a synonym for 'git commit'
Teach 'git merge' the --continue option which allows 'continuing' a
merge by completing it. The traditional way of completing a merge after
resolving conflicts is to use 'git commit'. Now with commands like 'git
rebase' and 'git cherry-pick' having a '--continue' option adding such
an option to 'git merge' presents a consistent UI.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 10:02:04 -08:00
Junio C Hamano
de2efebf7c Early fixes for 2.11.x series
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-13 14:13:17 -08:00
Junio C Hamano
ad9d7346b3 Merge branch 'ew/svn-fixes'
* ew/svn-fixes:
  git-svn: document useLogAuthor and addAuthorFrom config keys
  git-svn: allow "0" in SVN path components
2016-12-13 14:09:27 -08:00
Stefan Beller
f6f8586140 submodule: add absorb-git-dir function
When a submodule has its git dir inside the working dir, the submodule
support for checkout that we plan to add in a later patch will fail.

Add functionality to migrate the git directory to be absorbed
into the superprojects git directory.

The newly added code in this patch is structured such that other areas of
Git can also make use of it. The code in the submodule--helper is a mere
wrapper and option parser for the function
`absorb_git_dir_into_superproject`, that takes care of embedding the
submodules git directory into the superprojects git dir. That function
makes use of the more abstract function for this use case
`relocate_gitdir`, which can be used by e.g. the worktree code eventually
to move around a git directory.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 15:15:07 -08:00
Jeff King
cf3c635210 alternates: accept double-quoted paths
We read lists of alternates from objects/info/alternates
files (delimited by newline), as well as from the
GIT_ALTERNATE_OBJECT_DIRECTORIES environment variable
(delimited by colon or semi-colon, depending on the
platform).

There's no mechanism for quoting the delimiters, so it's
impossible to specify an alternate path that contains a
colon in the environment, or one that contains a newline in
a file. We've lived with that restriction for ages because
both alternates and filenames with colons are relatively
rare, and it's only a problem when the two meet. But since
722ff7f87 (receive-pack: quarantine objects until
pre-receive accepts, 2016-10-03), which builds on the
alternates system, every push causes the receiver to set
GIT_ALTERNATE_OBJECT_DIRECTORIES internally.

It would be convenient to have some way to quote the
delimiter so that we can represent arbitrary paths.

The simplest thing would be an escape character before a
quoted delimiter (e.g., "\:" as a literal colon). But that
creates a backwards compatibility problem: any path which
uses that escape character is now broken, and we've just
shifted the problem. We could choose an unlikely escape
character (e.g., something from the non-printable ASCII
range), but that's awkward to use.

Instead, let's treat names as unquoted unless they begin
with a double-quote, in which case they are interpreted via
our usual C-stylke quoting rules. This also breaks
backwards-compatibility, but in a smaller way: it only
matters if your file has a double-quote as the very _first_
character in the path (whereas an escape character is a
problem anywhere in the path).  It's also consistent with
many other parts of git, which accept either a bare pathname
or a double-quoted one, and the sender can choose to quote
or not as required.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 15:10:43 -08:00
Luis Ressel
e2c20be57c date-formats.txt: Typo fix
Last time I checked, I was living in the UTC+01:00 time zone. UTC+02:00
would be Central European _Summer_ Time.

Signed-off-by: Luis Ressel <aranea@aixah.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-12 11:09:51 -08:00
Eric Wong
ea9a93dcc2 git-svn: document useLogAuthor and addAuthorFrom config keys
We've always supported these config keys in git-svn,
so document them so users won't have to respecify them
on every invocation.

Reported-by: Juergen Kosel <juergen.kosel@gmx.de>
Signed-off-by: Eric Wong <e@80x24.org>
2016-12-12 10:49:50 -08:00
Jacob Keller
b1d31c8954 ref-filter: add support to display trailers as part of contents
Add %(trailers) and %(contents:trailers) to display the trailers as
interpreted by trailer_info_get. Update documentation and add a test for
the new feature.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:58:41 -08:00
Jacob Keller
d9f31fbfe9 pretty: add %(trailers) format for displaying trailers of a commit message
Recent patches have expanded on the trailers.c code and we have the
builtin commant git-interpret-trailers which can be used to add or
modify trailer lines. However, there is no easy way to simply display
the trailers of a commit message.

Add support for %(trailers) format modifier which will use the
trailer_info_get() calls to read trailers in an identical way as git
interpret-trailers does. Use a long format option instead of a short
name so that future work can more easily unify ref-filter and pretty
formats.

Add documentation and tests for the same.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:58:41 -08:00
Nguyễn Thái Ngọc Duy
9512177b68 rebase: add --quit to cleanup rebase, leave everything else untouched
There are occasions when you decide to abort an in-progress rebase and
move on to do something else but you forget to do "git rebase --abort"
first. Or the rebase has been in progress for so long you forgot about
it. By the time you realize that (e.g. by starting another rebase)
it's already too late to retrace your steps. The solution is normally

    rm -r .git/<some rebase dir>

and continue with your life. But there could be two different
directories for <some rebase dir> (and it obviously requires some
knowledge of how rebase works), and the ".git" part could be much
longer if you are not at top-dir, or in a linked worktree. And
"rm -r" is very dangerous to do in .git, a mistake in there could
destroy object database or other important data.

Provide "git rebase --quit" for this use case, mimicking a precedent
that is "git cherry-pick --quit".

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-11 13:51:41 -08:00
Kristoffer Haugsbakk
47437fd3bd doc: omit needless "for"
What was intended was perhaps "... plumbing does for you" ("you" added), but
simply omitting the word "for" is more terse and gets the intended point across
just as well, if not more so.

I originally went with the approach of writing "for you", but Junio C
Hamano suggested this approach instead.

Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 15:14:01 -08:00
Kristoffer Haugsbakk
c857c3a1ce doc: make the intent of sentence clearer
By adding the word "just", which might have been accidentally omitted.

Adding the word "just" makes it clear that the point is to *not* do an
octopus merge simply because you *can* do it.  In other words, you
should have a reason for doing it beyond simply having two (seemingly)
independent commits that you need to merge into another branch, since
it's not always the best approach.

The previous sentence made it look more like it was trying to say that
you shouldn't do an octopus merge *because* you can do an octopus merge.
Although this interpretation doesn't make sense and the rest of the
paragraph makes the intended meaning clear, this adjustment should make
the intent of the sentence more immediately clear to the reader.

Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 15:14:01 -08:00
Kristoffer Haugsbakk
f383e4ed53 doc: add verb in front of command to run
Instead of using the command 'git clone' as a verb, use "run" as the
verb indicating the action of executing the command 'git clone'.

Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 15:14:01 -08:00
Kristoffer Haugsbakk
8b9bb339cd doc: add articles (grammar)
Add definite and indefinite articles in three places where they were
missing.

- Use "the" in front of a directory name
- Use "the" in front of "style of cooperation"
- Use an indefinite article in front of "CVS background"

Signed-off-by: Kristoffer Haugsbakk <kristoffer.haugsbakk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-09 15:14:01 -08:00
SZEDER Gábor
51acfa9db5 versioncmp: use earliest-longest contained suffix to determine sorting order
When comparing tagnames, it is possible that a tagname contains more
than one of the configured prerelease suffixes around the first
different character.  After fixing a bug in the previous commit such a
tagname is sorted according to the contained suffix which comes first
in the configuration.  This is, however, not quite the right thing to
do in the following corner cases:

  1.   $ git -c versionsort.suffix=-bar
             -c versionsort.suffix=-foo-baz
             -c versionsort.suffix=-foo-bar
             tag -l --sort=version:refname 'v1*'
       v1.0-foo-bar
       v1.0-foo-baz

     The suffix of the tagname 'v1.0-foo-bar' is clearly '-foo-bar',
     so it should be listed last.  However, as it also contains '-bar'
     around the first different character, it is listed first instead,
     because that '-bar' suffix comes first the configuration.

  2. One of the configured suffixes starts with the other:

       $ git -c versionsort.prereleasesuffix=-pre \
             -c versionsort.prereleasesuffix=-prerelease \
             tag -l --sort=version:refname 'v2*'
       v2.0-prerelease1
       v2.0-pre1
       v2.0-pre2

     Here the tagname 'v2.0-prerelease1' should be the last.  When
     comparing 'v2.0-pre1' and 'v2.0-prerelease1' the first different
     characters are '1' and 'r', respectively.  Since this first
     different character must be part of the configured suffix, the
     '-pre' suffix is not recognized in the first tagname.  OTOH, the
     '-prerelease' suffix is properly recognized in
     'v2.0-prerelease1', thus it is listed first.

Improve version sort in these corner cases, and

  - look for a configured prerelease suffix containing the first
    different character or ending right before it, so the '-pre'
    suffixes are recognized in case (2).  This also means that
    when comparing tagnames 'v2.0-pre1' and 'v2.0-pre2',
    swap_prereleases() would find the '-pre' suffix in both, but then
    it will return "undecided" and the caller will do the right thing
    by sorting based in '1' and '2'.

  - If the tagname contains more than one suffix, then give precedence
    to the contained suffix that starts at the earliest offset in the
    tagname to address (1).

  - If there are more than one suffixes starting at that earliest
    position, then give precedence to the longest of those suffixes,
    thus ensuring that in (2) the tagname 'v2.0-prerelease1' won't be
    sorted based on the '-pre' suffix.

Add tests for these corner cases and adjust the documentation
accordingly.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
SZEDER Gábor
b8231660fa versioncmp: cope with common part overlapping with prerelease suffix
Version sort with prerelease reordering sometimes puts tagnames in the
wrong order, when the common part of two compared tagnames overlaps
with the leading character(s) of one or more configured prerelease
suffixes.  Note the position of "v2.1.0-beta-1":

  $ git -c versionsort.prereleaseSuffix=-beta \
        tag -l --sort=version:refname v2.1.*
  v2.1.0-beta-2
  v2.1.0-beta-3
  v2.1.0
  v2.1.0-RC1
  v2.1.0-RC2
  v2.1.0-beta-1
  v2.1.1
  v2.1.2

The reason is that when comparing a pair of tagnames, first
versioncmp() looks for the first different character in a pair of
tagnames, and then the swap_prereleases() helper function looks for a
configured prerelease suffix _starting at_ that character.  Thus, when
in the above example the sorting algorithm happens to compare the
tagnames "v2.1.0-beta-1" and "v2.1.0-RC2", swap_prereleases() tries to
match the suffix "-beta" against "beta-1" to no avail, and the two
tagnames erroneously end up being ordered lexicographically.

To fix this issue change swap_prereleases() to look for configured
prerelease suffixes _containing_ the position of that first different
character.

Care must be taken, when a configured suffix is longer than the
tagnames' common part up to the first different character, to avoid
reading memory before the beginning of the tagnames.  Add a test that
uses an exceptionally long prerelease suffix to check for this, in the
hope that in case of a regression the illegal memory access causes a
segfault in 'git tag' on one of the commonly used platforms (the test
happens to pass successfully on my Linux system with the safety check
removed), or at least makes valgrind complain.

Under some circumstances it's possible that more than one prerelease
suffixes can be found in the same tagname around that first different
character.  With this simple bugfix patch such a tagname is sorted
according to the contained suffix that comes first in the
configuration for now.  This is less than ideal in some cases, and the
following patch will take care of those.

Reported-by: Leho Kraav <leho@conversionready.com>
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-08 11:11:57 -08:00
Jeff King
50d3413740 http: make redirects more obvious
We instruct curl to always follow HTTP redirects. This is
convenient, but it creates opportunities for malicious
servers to create confusing situations. For instance,
imagine Alice is a git user with access to a private
repository on Bob's server. Mallory runs her own server and
wants to access objects from Bob's repository.

Mallory may try a few tricks that involve asking Alice to
clone from her, build on top, and then push the result:

  1. Mallory may simply redirect all fetch requests to Bob's
     server. Git will transparently follow those redirects
     and fetch Bob's history, which Alice may believe she
     got from Mallory. The subsequent push seems like it is
     just feeding Mallory back her own objects, but is
     actually leaking Bob's objects. There is nothing in
     git's output to indicate that Bob's repository was
     involved at all.

     The downside (for Mallory) of this attack is that Alice
     will have received Bob's entire repository, and is
     likely to notice that when building on top of it.

  2. If Mallory happens to know the sha1 of some object X in
     Bob's repository, she can instead build her own history
     that references that object. She then runs a dumb http
     server, and Alice's client will fetch each object
     individually. When it asks for X, Mallory redirects her
     to Bob's server. The end result is that Alice obtains
     objects from Bob, but they may be buried deep in
     history. Alice is less likely to notice.

Both of these attacks are fairly hard to pull off. There's a
social component in getting Mallory to convince Alice to
work with her. Alice may be prompted for credentials in
accessing Bob's repository (but not always, if she is using
a credential helper that caches). Attack (1) requires a
certain amount of obliviousness on Alice's part while making
a new commit. Attack (2) requires that Mallory knows a sha1
in Bob's repository, that Bob's server supports dumb http,
and that the object in question is loose on Bob's server.

But we can probably make things a bit more obvious without
any loss of functionality. This patch does two things to
that end.

First, when we encounter a whole-repo redirect during the
initial ref discovery, we now inform the user on stderr,
making attack (1) much more obvious.

Second, the decision to follow redirects is now
configurable. The truly paranoid can set the new
http.followRedirects to false to avoid any redirection
entirely. But for a more practical default, we will disallow
redirects only after the initial ref discovery. This is
enough to thwart attacks similar to (2), while still
allowing the common use of redirects at the repository
level. Since c93c92f30 (http: update base URLs when we see
redirects, 2013-09-28) we re-root all further requests from
the redirect destination, which should generally mean that
no further redirection is necessary.

As an escape hatch, in case there really is a server that
needs to redirect individual requests, the user can set
http.followRedirects to "true" (and this can be done on a
per-server basis via http.*.followRedirects config).

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 12:32:48 -08:00
Lars Schneider
c6b0831c9c docs: warn about possible '=' in clean/smudge filter process values
A pathname value in a clean/smudge filter process "key=value" pair can
contain the '=' character (introduced in edcc858). Make the user aware
of this issue in the docs, add a corresponding test case, and fix the
issue in filter process value parser of the example implementation in
contrib.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-06 11:29:52 -08:00
Nguyễn Thái Ngọc Duy
3bb16a8bf2 tag, branch, for-each-ref: add --ignore-case for sorting and filtering
This options makes sorting ignore case, which is great when you have
branches named bug-12-do-something, Bug-12-do-some-more and
BUG-12-do-what and want to group them together. Sorting externally may
not be an option because we lose coloring and column layout from
git-branch and git-tag.

The same could be said for filtering, but it's probably less important
because you can always go with the ugly pattern [bB][uU][gG]-* if you're
desperate.

You can't have case-sensitive filtering and case-insensitive sorting (or
the other way around) with this though. For branch and tag, that should
be no problem. for-each-ref, as a plumbing, might want finer control.
But we can always add --{filter,sort}-ignore-case when there is a need
for it.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 14:59:29 -08:00
Lars Schneider
89a6ecc55b git-p4: add config to retry p4 commands; retry 3 times by default
P4 commands can fail due to random network issues. P4 users can counter
these issues by using a retry flag supported by all p4 commands [1].

Add an integer Git config value `git-p4.retries` to define the number of
retries for all p4 invocations. If the config is not defined then set
the default retry count to 3.

[1] https://www.perforce.com/perforce/doc.current/manuals/cmdref/global.options.html

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 14:55:32 -08:00
Luke Diamand
46c609e9ff git-p4: support updating an existing shelved changelist
Adds new option "--update-shelve CHANGELIST" which updates
an existing shelved changelist.

The original changelist must have been created by the current user.

This allows workflow something like:

   hack hack hack
   git commit
   git p4 submit --shelve
   $mail interested parties about shelved changelist
   make corrections
   git commit --amend
   git p4 submit --update-shelve $CHANGELIST
   $mail interested parties about shelved changelist
   etc

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:55:01 -08:00
Andreas Krey
319d835240 commit: make --only --allow-empty work without paths
--only is implied when paths are present, and required
them unless --amend. But with --allow-empty it should
be allowed as well - it is the only way to create an
empty commit in the presence of staged changes.

Signed-off-by: Andreas Krey <a.krey@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 12:41:06 -08:00
Junio C Hamano
8d7a455ed5 Start post 2.11 cycle
For now, let's call it 2.12 tentatively.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 11:31:47 -08:00
Junio C Hamano
a274e0a036 Sync with maint-2.10
* maint-2.10:
  preparing for 2.10.3
2016-12-05 11:25:47 -08:00
Junio C Hamano
c3808ca698 preparing for 2.10.3
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-05 11:25:02 -08:00
Junio C Hamano
797d1a4672 Merge branch 'nd/worktree-lock' into maint
Typofix.

* nd/worktree-lock:
  git-worktree.txt: fix typo "to"/"two", and add comma
2016-11-29 13:28:02 -08:00
Junio C Hamano
d92466ee25 Merge branch 'ps/common-info-doc' into maint
Doc fix.

* ps/common-info-doc:
  doc: fix location of 'info/' with $GIT_COMMON_DIR
2016-11-29 13:28:01 -08:00
Junio C Hamano
6afadbd5ee Merge branch 'sc/fmt-merge-msg-doc-markup-fix' into maint
Documentation fix.

* sc/fmt-merge-msg-doc-markup-fix:
  Documentation/fmt-merge-msg: fix markup in example
2016-11-29 13:28:00 -08:00
Junio C Hamano
50b8276ab9 Merge branch 'jk/rebase-config-insn-fmt-docfix' into maint
Documentation fix.

* jk/rebase-config-insn-fmt-docfix:
  doc: fix missing "::" in config list
2016-11-29 13:27:58 -08:00
Junio C Hamano
454cb6bd52 Git 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 12:23:07 -08:00
Vinicius Kursancew
b34fa5777d git-p4: allow submit to create shelved changelists.
Add a --shelve command line argument which invokes p4 shelve instead
of submitting changes. After shelving the changes are reverted from the
p4 workspace.

Signed-off-by: Vinicius Kursancew <viniciusalexandre@gmail.com>
Reviewed-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-29 10:59:01 -08:00
Marc Branchaud
aeddbfdfa4 RelNotes: spelling and phrasing fixups
Signed-off-by: Marc Branchaud <marcnarc@xiplink.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-28 15:58:48 -08:00
Junio C Hamano
e2b2d6a172 Git 2.11-rc3
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-23 11:24:59 -08:00
Junio C Hamano
6a2b569c2f Merge branch 'jt/trailer-with-cruft'
Doc update.

* jt/trailer-with-cruft:
  doc: mention user-configured trailers
2016-11-23 11:23:17 -08:00
Stefan Beller
f2627d9b19 submodule-config: clarify parsing of null_sha1 element
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Reviewed-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-22 14:43:04 -08:00
Stefan Beller
73c293bb6c submodule-config: rename commit_sha1 to treeish_name
It is also possible to pass in any treeish name to lookup a submodule
config. Make it clear by naming the variables accordingly. Looking up
a submodule config by tree hash will come in handy in a later patch.

Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-22 14:43:03 -08:00
Jonathan Tan
df616b19b4 doc: mention user-configured trailers
In commit 1462450 ("trailer: allow non-trailers in trailer block",
2016-10-21), functionality was added (and tested [1]) to allow
non-trailer lines in trailer blocks, as long as those blocks contain at
least one Git-generated or user-configured trailer, and consists of at
least 25% trailers. The documentation was updated to mention this new
functionality, but did not mention "user-configured trailer".

Further update the documentation to also mention "user-configured
trailer".

[1] "with non-trailer lines mixed with a configured trailer" in
t/t7513-interpret-trailers.sh

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-21 12:49:57 -08:00
David Turner
f8edeaa05d upload-pack: optionally allow fetching any sha1
It seems a little silly to do a reachabilty check in the case where we
trust the user to access absolutely everything in the repository.

Also, it's racy in a distributed system -- perhaps one server
advertises a ref, but another has since had a force-push to that ref,
and perhaps the two HTTP requests end up directed to these different
servers.

Signed-off-by: David Turner <dturner@twosigma.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-18 13:06:14 -08:00
Junio C Hamano
1310affe02 Git 2.11-rc2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-17 13:47:36 -08:00
Junio C Hamano
166251c32e Merge branch 'nd/worktree-lock'
Typofix.

* nd/worktree-lock:
  git-worktree.txt: fix typo "to"/"two", and add comma
2016-11-17 13:45:21 -08:00
Matt McCutchen
f1350d0c12 git-gc.txt: expand discussion of races with other processes
In general, "git gc" may delete objects that another concurrent process
is using but hasn't created a reference to.  Git has some mitigations,
but they fall short of a complete solution.  Document this in the
git-gc(1) man page and add a reference from the documentation of the
gc.pruneExpire config variable.

Based on a write-up by Jeff King:

http://marc.info/?l=git&m=147922960131779&w=2

Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-16 13:42:17 -08:00
Matt McCutchen
235ec24352 doc: mention transfer data leaks in more places
The "SECURITY" section of the gitnamespaces(7) man page described two
ways for a client to steal data from a server that wasn't intended to be
shared. Similar attacks can be performed by a server on a client, so
adapt the section to cover both directions and add it to the
git-fetch(1), git-pull(1), and git-push(1) man pages. Also add
references to this section from the documentation of server
configuration options that attempt to control data leakage but may not
be fully effective.

Signed-off-by: Matt McCutchen <matt@mattmccutchen.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-14 11:23:07 -08:00
Ben North
2b090822e8 git-worktree.txt: fix typo "to"/"two", and add comma
Signed-off-by: Ben North <ben@redfrontdoor.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-13 17:56:56 -08:00
Junio C Hamano
3ab228137f Git 2.11.0-rc1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-11 14:04:32 -08:00
Junio C Hamano
12133d52c1 Merge branch 'ps/common-info-doc'
Doc fix.

* ps/common-info-doc:
  doc: fix location of 'info/' with $GIT_COMMON_DIR
2016-11-11 13:56:31 -08:00
Patrick Steinhardt
3285b7badb doc: fix location of 'info/' with $GIT_COMMON_DIR
With the introduction of the $GIT_COMMON_DIR variable, the
repository layout manual was changed to reflect the location for
many files in case the variable is set. While adding the new
locations, one typo snuck in regarding the location of the
'info/' folder, which is falsely claimed to reside at
"$GIT_COMMON_DIR/index".

Fix the typo to point to "$GIT_COMMON_DIR/info/" instead.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-11 09:37:33 -08:00
Junio C Hamano
be5a750939 A bit of updates post -rc0
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-11-01 12:59:58 -07:00
Junio C Hamano
1fe8f2cf46 Git 2.11-rc0
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-31 13:19:53 -07:00
Junio C Hamano
590f0bfe9f Merge branch 'sc/fmt-merge-msg-doc-markup-fix'
Documentation fix.

* sc/fmt-merge-msg-doc-markup-fix:
  Documentation/fmt-merge-msg: fix markup in example
2016-10-31 13:15:26 -07:00
Junio C Hamano
702b6a6fc0 Merge branch 'jk/rebase-config-insn-fmt-docfix'
Documentation fix.

* jk/rebase-config-insn-fmt-docfix:
  doc: fix missing "::" in config list
2016-10-31 13:15:24 -07:00
Junio C Hamano
9fa1f902bf Merge branch 'aw/numbered-stash'
The user always has to say "stash@{$N}" when naming a single
element in the default location of the stash, i.e. reflogs in
refs/stash.  The "git stash" command learned to accept "git stash
apply 4" as a short-hand for "git stash apply stash@{4}".

* aw/numbered-stash:
  stash: allow stashes to be referenced by index only
2016-10-31 13:15:22 -07:00
Junio C Hamano
cabb79d8c1 Merge branch 'jt/trailer-with-cruft'
Update "interpret-trailers" machinery and teaches it that people in
real world write all sorts of crufts in the "trailer" that was
originally designed to have the neat-o "Mail-Header: like thing"
and nothing else.

* jt/trailer-with-cruft:
  trailer: support values folded to multiple lines
  trailer: forbid leading whitespace in trailers
  trailer: allow non-trailers in trailer block
  trailer: clarify failure modes in parse_trailer
  trailer: make args have their own struct
  trailer: streamline trailer item create and add
  trailer: use list.h for doubly-linked list
  trailer: improve const correctness
2016-10-31 13:15:22 -07:00
Junio C Hamano
dbaa6bdce2 Merge branch 'ls/filter-process'
The smudge/clean filter API expect an external process is spawned
to filter the contents for each path that has a filter defined.  A
new type of "process" filter API has been added to allow the first
request to run the filter for a path to spawn a single process, and
all filtering need is served by this single process for multiple
paths, reducing the process creation overhead.

* ls/filter-process:
  contrib/long-running-filter: add long running filter example
  convert: add filter.<driver>.process option
  convert: prepare filter.<driver>.process option
  convert: make apply_filter() adhere to standard Git error handling
  pkt-line: add functions to read/write flush terminated packet streams
  pkt-line: add packet_write_gently()
  pkt-line: add packet_flush_gently()
  pkt-line: add packet_write_fmt_gently()
  pkt-line: extract set_packet_header()
  pkt-line: rename packet_write() to packet_write_fmt()
  run-command: add clean_on_exit_handler
  run-command: move check_pipe() from write_or_die to run_command
  convert: modernize tests
  convert: quote filter names in error messages
2016-10-31 13:15:21 -07:00
Jeff King
6d834ac8f1 doc: fix missing "::" in config list
The rebase.instructionFormat option is missing its "::" to
tell AsciiDoc that it's a list entry. As a result, the
option name gets lumped into the description in one big
paragraph.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-30 15:26:37 -07:00
Junio C Hamano
7805bda2ac Git 2.10.2
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Sync with 2.10.2
2016-10-28 09:04:06 -07:00
Junio C Hamano
ac84098b7e Git 2.10.2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-28 09:02:44 -07:00
Junio C Hamano
4efd8e64d3 Merge branch 'rs/pretty-format-color-doc-fix' into maint
Small doc update.

* rs/pretty-format-color-doc-fix:
  pretty: fix document link for color specification
2016-10-28 09:01:23 -07:00
Junio C Hamano
311811b39f Merge branch 'po/fix-doc-merge-base-illustration' into maint
Some AsciiDoc formatter mishandles a displayed illustration with
tabs in it.  Adjust a few of them in merge-base documentation to
work around them.

* po/fix-doc-merge-base-illustration:
  doc: fix the 'revert a faulty merge' ASCII art tab spacing
  doc: fix merge-base ASCII art tab spacing
2016-10-28 09:01:21 -07:00
Junio C Hamano
c8386962d6 Merge branch 'bw/submodule-branch-dot-doc' into maint
Recent git allows submodule.<name>.branch to use a special token
"." instead of the branch name; the documentation has been updated
to describe it.

* bw/submodule-branch-dot-doc:
  submodules doc: update documentation for "." used for submodule branches
2016-10-28 09:01:19 -07:00
Junio C Hamano
a42539f7de Merge branch 'sb/submodule-config-doc-drop-path' into maint
The "submodule.<name>.path" stored in .gitmodules is never copied
to .git/config and such a key in .git/config has no meaning, but
the documentation described it and submodule.<name>.url next to
each other as if both belong to .git/config.  This has been fixed.

* sb/submodule-config-doc-drop-path:
  documentation: improve submodule.<name>.{url, path} description
2016-10-28 09:01:16 -07:00
Junio C Hamano
e2f1d2c317 Merge branch 'nd/commit-p-doc' into maint
Documentation for "git commit" was updated to clarify that "commit
-p <paths>" adds to the current contents of the index to come up
with what to commit.

* nd/commit-p-doc:
  git-commit.txt: clarify --patch mode with pathspec
2016-10-28 09:01:15 -07:00
Junio C Hamano
03969dff8f Merge branch 'yk/git-tag-remove-mention-of-old-layout-in-doc' into maint
Shorten description of auto-following in "git tag" by removing a
mention of historical remotes layout which is not relevant to the
main topic.

* yk/git-tag-remove-mention-of-old-layout-in-doc:
  doc: remove reference to the traditional layout in git-tag.txt
2016-10-28 09:01:10 -07:00
Stefan Christ
4259d693fc Documentation/fmt-merge-msg: fix markup in example
Use at least 4 delimiting dashes that are required for
ListingBlock to get this block rendered as verbatim text.

Signed-off-by: Stefan Christ <contact@stefanchrist.eu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-28 05:51:51 -07:00
Junio C Hamano
eda7eebe6f Getting ready for 2.11-rc0
... but not quite yet.  A few more topics to go.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-27 15:06:24 -07:00
Junio C Hamano
650360210a Merge branch 'nd/ita-empty-commit'
When new paths were added by "git add -N" to the index, it was
enough to circumvent the check by "git commit" to refrain from
making an empty commit without "--allow-empty".  The same logic
prevented "git status" to show such a path as "new file" in the
"Changes not staged for commit" section.

* nd/ita-empty-commit:
  commit: don't be fooled by ita entries when creating initial commit
  commit: fix empty commit creation when there's no changes but ita entries
  diff: add --ita-[in]visible-in-index
  diff-lib: allow ita entries treated as "not yet exist in index"
2016-10-27 14:58:50 -07:00
Junio C Hamano
2cc2e70264 Eleventh batch for 2.11
There still are a few topics that need to go in before -rc0 which
would make the shape of the upcoming release clearer, but here is
the final batch before it happens.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-26 13:28:47 -07:00
Junio C Hamano
4abeeb62a0 Merge branch 'po/fix-doc-merge-base-illustration'
Some AsciiDoc formatter mishandles a displayed illustration with
tabs in it.  Adjust a few of them in merge-base documentation to
work around them.

* po/fix-doc-merge-base-illustration:
  doc: fix the 'revert a faulty merge' ASCII art tab spacing
  doc: fix merge-base ASCII art tab spacing
2016-10-26 13:14:55 -07:00
Junio C Hamano
24cfb6ff58 Merge branch 'yk/git-tag-remove-mention-of-old-layout-in-doc'
Shorten description of auto-following in "git tag" by removing a
mention of historical remotes layout which is not relevant to the
main topic.

* yk/git-tag-remove-mention-of-old-layout-in-doc:
  doc: remove reference to the traditional layout in git-tag.txt
2016-10-26 13:14:52 -07:00
Junio C Hamano
7425fe100f Merge branch 'bw/submodule-branch-dot-doc'
Recent git allows submodule.<name>.branch to use a special token
"." instead of the branch name; the documentation has been updated
to describe it.

* bw/submodule-branch-dot-doc:
  submodules doc: update documentation for "." used for submodule branches
2016-10-26 13:14:49 -07:00
Junio C Hamano
56d268baff Merge branch 'mg/gpg-richer-status'
The GPG verification status shown in "%G?" pretty format specifier
was not rich enough to differentiate a signature made by an expired
key, a signature made by a revoked key, etc.  New output letters
have been assigned to express them.

* mg/gpg-richer-status:
  gpg-interface: use more status letters
2016-10-26 13:14:45 -07:00
Junio C Hamano
1c2b1f7018 Merge branch 'bw/ls-files-recurse-submodules'
"git ls-files" learned "--recurse-submodules" option that can be
used to get a listing of tracked files across submodules (i.e. this
only works with "--cached" option, not for listing untracked or
ignored files).  This would be a useful tool to sit on the upstream
side of a pipe that is read with xargs to work on all working tree
files from the top-level superproject.

* bw/ls-files-recurse-submodules:
  ls-files: add pathspec matching for submodules
  ls-files: pass through safe options for --recurse-submodules
  ls-files: optionally recurse into submodules
  git: make super-prefix option
2016-10-26 13:14:44 -07:00
Junio C Hamano
e5272d304a Merge branch 'jc/ws-error-highlight'
"git diff/log --ws-error-highlight=<kind>" lacked the corresponding
configuration variable to set it by default.

* jc/ws-error-highlight:
  diff: introduce diff.wsErrorHighlight option
  diff.c: move ws-error-highlight parsing helpers up
  diff.c: refactor parse_ws_error_highlight()
  t4015: split out the "setup" part of ws-error-highlight test
2016-10-26 13:14:43 -07:00
Aaron M Watson
a56c8f5aab stash: allow stashes to be referenced by index only
Instead of referencing "stash@{n}" explicitly, make it possible to
simply reference as "n".  Most users only reference stashes by their
position in the stash stack (what I refer to as the "index" here).

The syntax for the typical stash (stash@{n}) is slightly annoying and
easy to forget, and sometimes difficult to escape properly in a
script. Because of this the capability to do things with the stash by
simply referencing the index is desirable.

This patch includes the superior implementation provided by Øsse Walle
(thanks for that), with a slight change to fix a broken test in the test
suite. I also merged the test scripts as suggested by Jeff King, and
un-wrapped the documentation as suggested by Junio Hamano.

Signed-off-by: Aaron M Watson <watsona4@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
2016-10-26 09:58:10 -07:00
Philip Oakley
6750f62699 doc: fix the 'revert a faulty merge' ASCII art tab spacing
The asciidoctor doc-tool stack does not always respect the 'tab = 8 spaces' rule
expectation, particularly for the Git-for-Windows generated html pages. This
follows on from the 'doc: fix merge-base ASCII art tab spacing' fix.

Use just spaces within the block of the ascii art.

All other *.txt ascii art containing three dashes has been checked.
Asciidoctor correctly formats the other art blocks that do contain tabs.

Signed-off-by: Philip Oakley <philipoakley@iee.org
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 18:09:46 -07:00
Nguyễn Thái Ngọc Duy
b42b451919 diff: add --ita-[in]visible-in-index
The option --ita-invisible-in-index exposes the "ita_invisible_in_index"
diff flag to outside to allow easier experimentation with this new mode.
The "plan" is to make --ita-invisible-in-index default to keep consistent
behavior with 'status' and 'commit', but a bunch other commands like
'apply', 'merge', 'reset'.... need to be taken into consideration as well.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-24 10:47:51 -07:00
Jonathan Tan
60ef86a162 trailer: support values folded to multiple lines
Currently, interpret-trailers requires that a trailer be only on 1 line.
For example:

a: first line
   second line

would be interpreted as one trailer line followed by one non-trailer line.

Make interpret-trailers support RFC 822-style folding, treating those
lines as one logical trailer.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Jonathan Tan
c463a6b280 trailer: forbid leading whitespace in trailers
Currently, interpret-trailers allows leading whitespace in trailer
lines. This leads to false positives, especially for quoted lines or
bullet lists.

Forbid leading whitespace in trailers.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Jonathan Tan
146245063e trailer: allow non-trailers in trailer block
Currently, interpret-trailers requires all lines of a trailer block to
be trailers (or comments) - if not it would not identify that block as a
trailer block, and thus create its own trailer block, inserting a blank
line.  For example:

  echo -e "\nSigned-off-by: x\nnot trailer" |
  git interpret-trailers --trailer "c: d"

would result in:

  Signed-off-by: x
  not trailer

  c: d

Relax the definition of a trailer block to require that the trailers (i)
are all trailers, or (ii) contain at least one Git-generated trailer and
consists of at least 25% trailers.

  Signed-off-by: x
  not trailer
  c: d

(i) is the existing functionality. (ii) allows arbitrary lines to be
included in trailer blocks, like those in [1], and still allow
interpret-trailers to be used.

[1]
e7d316a02f

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 11:48:35 -07:00
Philip Oakley
5dd05ebf6f doc: fix merge-base ASCII art tab spacing
The doc-tool stack does not always respect the 'tab = 8 spaces' rule,
particularly the git-scm doc pages https://git-scm.com/docs/git-merge-base
and the Git generated html pages.

Use just spaces within the block of the ascii art.

Noticed when reviewing Junio's suggested update to `git merge-base`
https://public-inbox.org/git/xmqqmvi2sj8f.fsf@gitster.mtv.corp.google.com/T/#u

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-21 09:46:48 -07:00
Younes Khoudli
749a2279a4 doc: remove reference to the traditional layout in git-tag.txt
This is the only place in the documentation that the traditional layout
is mentioned, and it is confusing. Remove it.

* Documentation/git-tag.txt: Here.

Signed-off-by: Younes Khoudli <younes.khoudli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-20 09:31:42 -07:00
Brandon Williams
15ef78008a submodules doc: update documentation for "." used for submodule branches
4d7bc52b17 ("submodule update: allow '.' for branch value",
2016-08-03) adopted from Gerrit a feature to set "." as a special
value of "submodule.<name>.branch" in .gitmodules file to indicate
that the tracking branch in the submodule should be the same as the
current branch in the superproject.

Update the documentation to describe this.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-19 14:58:53 -07:00
Junio C Hamano
720265749d Tenth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 13:26:27 -07:00
Junio C Hamano
1494482685 Merge branch 'sb/submodule-config-doc-drop-path'
The "submodule.<name>.path" stored in .gitmodules is never copied
to .git/config and such a key in .git/config has no meaning, but
the documentation described it and submodule.<name>.url next to
each other as if both belong to .git/config.  This has been fixed.

* sb/submodule-config-doc-drop-path:
  documentation: improve submodule.<name>.{url, path} description
2016-10-17 13:25:24 -07:00
Junio C Hamano
c4e0d011f9 Merge branch 'rs/pretty-format-color-doc-fix'
* rs/pretty-format-color-doc-fix:
  pretty: fix document link for color specification
2016-10-17 13:25:23 -07:00
Junio C Hamano
5b4c45af0c Merge branch 'da/mergetool-diff-order'
"git mergetool" learned to honor "-O<orderfile>" to control the
order of paths to present to the end user.

* da/mergetool-diff-order:
  mergetool: honor -O<orderfile>
  mergetool: honor diff.orderFile
  mergetool: move main program flow into a main() function
  mergetool: add copyright
2016-10-17 13:25:21 -07:00
Junio C Hamano
dec040192f Merge branch 'jk/alt-odb-cleanup'
Codepaths involved in interacting alternate object store have
been cleaned up.

* jk/alt-odb-cleanup:
  alternates: use fspathcmp to detect duplicates
  sha1_file: always allow relative paths to alternates
  count-objects: report alternates via verbose mode
  fill_sha1_file: write into a strbuf
  alternates: store scratch buffer as strbuf
  fill_sha1_file: write "boring" characters
  alternates: use a separate scratch space
  alternates: encapsulate alt->base munging
  alternates: provide helper for allocating alternate
  alternates: provide helper for adding to alternates list
  link_alt_odb_entry: refactor string handling
  link_alt_odb_entry: handle normalize_path errors
  t5613: clarify "too deep" recursion tests
  t5613: do not chdir in main process
  t5613: whitespace/style cleanups
  t5613: use test_must_fail
  t5613: drop test_valid_repo function
  t5613: drop reachable_via function
2016-10-17 13:25:20 -07:00
Junio C Hamano
af9a70c8de Merge branch 'nd/commit-p-doc'
Documentation for "git commit" was updated to clarify that "commit
-p <paths>" adds to the current contents of the index to come up
with what to commit.

* nd/commit-p-doc:
  git-commit.txt: clarify --patch mode with pathspec
2016-10-17 13:25:19 -07:00
Lars Schneider
0f71fa273f contrib/long-running-filter: add long running filter example
Add a simple pass-thru filter as example implementation for the Git
filter protocol version 2. See Documentation/gitattributes.txt, section
"Filter Protocol" for more info.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 11:45:52 -07:00
Lars Schneider
edcc85814c convert: add filter.<driver>.process option
Git's clean/smudge mechanism invokes an external filter process for
every single blob that is affected by a filter. If Git filters a lot of
blobs then the startup time of the external filter processes can become
a significant part of the overall Git execution time.

In a preliminary performance test this developer used a clean/smudge
filter written in golang to filter 12,000 files. This process took 364s
with the existing filter mechanism and 5s with the new mechanism. See
details here: https://github.com/github/git-lfs/pull/1382

This patch adds the `filter.<driver>.process` string option which, if
used, keeps the external filter process running and processes all blobs
with the packet format (pkt-line) based protocol over standard input and
standard output. The full protocol is explained in detail in
`Documentation/gitattributes.txt`.

A few key decisions:

* The long running filter process is referred to as filter protocol
  version 2 because the existing single shot filter invocation is
  considered version 1.
* Git sends a welcome message and expects a response right after the
  external filter process has started. This ensures that Git will not
  hang if a version 1 filter is incorrectly used with the
  filter.<driver>.process option for version 2 filters. In addition,
  Git can detect this kind of error and warn the user.
* The status of a filter operation (e.g. "success" or "error) is set
  before the actual response and (if necessary!) re-set after the
  response. The advantage of this two step status response is that if
  the filter detects an error early, then the filter can communicate
  this and Git does not even need to create structures to read the
  response.
* All status responses are pkt-line lists terminated with a flush
  packet. This allows us to send other status fields with the same
  protocol in the future.

Helped-by: Martin-Louis Bright <mlbright@gmail.com>
Reviewed-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-17 11:45:52 -07:00
Michael J Gruber
661a180681 gpg-interface: use more status letters
According to gpg2's doc/DETAILS:

    For each signature only one of the codes GOODSIG, BADSIG,
    EXPSIG, EXPKEYSIG, REVKEYSIG or ERRSIG will be emitted.

gpg1 ("classic") behaves the same (although doc/DETAILS differs).

Currently, we parse gpg's status output for GOODSIG, BADSIG and
trust information and translate that into status codes G, B, U, N
for the %G?  format specifier.

git-verify-* returns success in the GOODSIG case only. This is
somewhat in disagreement with gpg, which considers the first 5 of
the 6 above as VALIDSIG, but we err on the very safe side.

Introduce additional status codes E, X, Y, R for ERRSIG, EXPSIG,
EXPKEYSIG, and REVKEYSIG so that a user of %G? gets more information
about the absence of a 'G' on first glance.

Requested-by: Alex <agrambot@gmail.com>
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 10:41:59 -07:00
Junio C Hamano
3cdd5d1917 Sync with maint
* maint:
  Start preparing for 2.10.2
2016-10-11 14:55:48 -07:00
Junio C Hamano
74eeaf7b72 Start preparing for 2.10.2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 14:24:02 -07:00
Junio C Hamano
54a9f14743 Merge branch 'pb/rev-list-reverse-with-count' into maint
Doc update to clarify what "log -3 --reverse" does.

* pb/rev-list-reverse-with-count:
  rev-list-options: clarify the usage of --reverse
2016-10-11 14:20:06 -07:00
René Scharfe
30cfe72d37 pretty: fix document link for color specification
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:07:09 -07:00
David Aguilar
654311bf6e mergetool: honor -O<orderfile>
Teach mergetool to pass "-O<orderfile>" down to `git diff` when
specified on the command-line.

Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: David Aguilar <davvid@gmail.com>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:04:31 -07:00
David Aguilar
57937f70a0 mergetool: honor diff.orderFile
Teach mergetool to get the list of files to edit via `diff` so that we
gain support for diff.orderFile.

Suggested-by: Luis Gutierrez <luisgutz@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: David Aguilar <davvid@gmail.com>
Reviewed-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:04:27 -07:00
Stefan Beller
72710165c9 documentation: improve submodule.<name>.{url, path} description
Unlike the url variable a user cannot override the the path variable,
as it is part of the content together with the gitlink at the given
path. To avoid confusion do not mention the .path variable in the config
section and rely on the documentation provided in gitmodules[5].

Enhance the description of submodule.<name>.url and mention its two use
cases separately.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-11 10:03:36 -07:00
Junio C Hamano
8a36cd87b7 Ninth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 14:09:12 -07:00
Junio C Hamano
1172e16af0 Merge branch 'jc/blame-reverse'
It is a common mistake to say "git blame --reverse OLD path",
expecting that the command line is dwimmed as if asking how lines
in path in an old revision OLD have survived up to the current
commit.

* jc/blame-reverse:
  blame: dwim "blame --reverse OLD" as "blame --reverse OLD.."
  blame: improve diagnosis for "--reverse NEW"
2016-10-10 14:03:51 -07:00
Junio C Hamano
a460ea4a3c Merge branch 'nd/shallow-deepen'
The existing "git fetch --depth=<n>" option was hard to use
correctly when making the history of an existing shallow clone
deeper.  A new option, "--deepen=<n>", has been added to make this
easier to use.  "git clone" also learned "--shallow-since=<date>"
and "--shallow-exclude=<tag>" options to make it easier to specify
"I am interested only in the recent N months worth of history" and
"Give me only the history since that version".

* nd/shallow-deepen: (27 commits)
  fetch, upload-pack: --deepen=N extends shallow boundary by N commits
  upload-pack: add get_reachable_list()
  upload-pack: split check_unreachable() in two, prep for get_reachable_list()
  t5500, t5539: tests for shallow depth excluding a ref
  clone: define shallow clone boundary with --shallow-exclude
  fetch: define shallow boundary with --shallow-exclude
  upload-pack: support define shallow boundary by excluding revisions
  refs: add expand_ref()
  t5500, t5539: tests for shallow depth since a specific date
  clone: define shallow clone boundary based on time with --shallow-since
  fetch: define shallow boundary with --shallow-since
  upload-pack: add deepen-since to cut shallow repos based on time
  shallow.c: implement a generic shallow boundary finder based on rev-list
  fetch-pack: use a separate flag for fetch in deepening mode
  fetch-pack.c: mark strings for translating
  fetch-pack: use a common function for verbose printing
  fetch-pack: use skip_prefix() instead of starts_with()
  upload-pack: move rev-list code out of check_non_tip()
  upload-pack: make check_non_tip() clean things up on error
  upload-pack: tighten number parsing at "deepen" lines
  ...
2016-10-10 14:03:50 -07:00
Jeff King
5fe849d651 count-objects: report alternates via verbose mode
There's no way to get the list of alternates that git
computes internally; our tests only infer it based on which
objects are available. In addition to testing, knowing this
list may be helpful for somebody debugging their alternates
setup.

Let's add it to the "count-objects -v" output. We could give
it a separate flag, but there's not really any need.
"count-objects -v" is already a debugging catch-all for the
object database, its output is easily extensible to new data
items, and printing the alternates is not expensive (we
already had to find them to count the objects).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 13:52:37 -07:00
Brandon Williams
75a6315f74 ls-files: add pathspec matching for submodules
Pathspecs can be a bit tricky when trying to apply them to submodules.
The main challenge is that the pathspecs will be with respect to the
superproject and not with respect to paths in the submodule.  The
approach this patch takes is to pass in the identical pathspec from the
superproject to the submodule in addition to the submodule-prefix, which
is the path from the root of the superproject to the submodule, and then
we can compare an entry in the submodule prepended with the
submodule-prefix to the pathspec in order to determine if there is a
match.

This patch also permits the pathspec logic to perform a prefix match against
submodules since a pathspec could refer to a file inside of a submodule.
Due to limitations in the wildmatch logic, a prefix match is only done
literally.  If any wildcard character is encountered we'll simply punt
and produce a false positive match.  More accurate matching will be done
once inside the submodule.  This is due to the superproject not knowing
what files could exist in the submodule.

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 12:14:58 -07:00
Brandon Williams
e77aa336f1 ls-files: optionally recurse into submodules
Allow ls-files to recognize submodules in order to retrieve a list of
files from a repository's submodules.  This is done by forking off a
process to recursively call ls-files on all submodules. Use top-level
--super-prefix option to pass a path to the submodule which it can
use to prepend to output or pathspec matching logic.

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 12:14:58 -07:00
Brandon Williams
74866d7579 git: make super-prefix option
Add a super-prefix environment variable 'GIT_INTERNAL_SUPER_PREFIX'
which can be used to specify a path from above a repository down to its
root.  When such a super-prefix is specified, the paths reported by Git
are prefixed with it to make them relative to that directory "above".
The paths given by the user on the command line
(e.g. "git subcmd --output-file=path/to/a/file" and pathspecs) are taken
relative to the directory "above" to match.

The immediate use of this option is by commands which have a
--recurse-submodule option in order to give context to submodules about
how they were invoked.  This option is currently only allowed for
builtins which support a super-prefix.

Signed-off-by: Brandon Williams <bmwill@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-10 12:14:58 -07:00
Junio C Hamano
a23ca1b8dc Eighth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-06 14:55:18 -07:00
Junio C Hamano
fbfe878f97 Merge branch 'ps/http-gssapi-cred-delegation'
In recent versions of cURL, GSSAPI credential delegation is
disabled by default due to CVE-2011-2192; introduce a configuration
to selectively allow enabling this.

* ps/http-gssapi-cred-delegation:
  http: control GSSAPI credential delegation
2016-10-06 14:53:11 -07:00
Junio C Hamano
8c98a68981 Merge branch 'vn/revision-shorthand-for-side-branch-log'
"git log rev^..rev" is an often-used revision range specification
to show what was done on a side branch merged at rev.  This has
gained a short-hand "rev^-1".  In general "rev^-$n" is the same as
"^rev^$n rev", i.e. what has happened on other branches while the
history leading to nth parent was looking the other way.

* vn/revision-shorthand-for-side-branch-log:
  revision: new rev^-n shorthand for rev^n..rev
2016-10-06 14:53:10 -07:00
Junio C Hamano
66c22ba6fb Merge branch 'jk/ambiguous-short-object-names'
When given an abbreviated object name that is not (or more
realistically, "no longer") unique, we gave a fatal error
"ambiguous argument".  This error is now accompanied by hints that
lists the objects that begins with the given prefix.  During the
course of development of this new feature, numerous minor bugs were
uncovered and corrected, the most notable one of which is that we
gave "short SHA1 xxxx is ambiguous." twice without good reason.

* jk/ambiguous-short-object-names:
  get_short_sha1: make default disambiguation configurable
  get_short_sha1: list ambiguous objects on error
  for_each_abbrev: drop duplicate objects
  sha1_array: let callbacks interrupt iteration
  get_short_sha1: mark ambiguity error for translation
  get_short_sha1: NUL-terminate hex prefix
  get_short_sha1: refactor init of disambiguation code
  get_short_sha1: parse tags when looking for treeish
  get_sha1: propagate flags to child functions
  get_sha1: avoid repeating ourselves via ONLY_TO_DIE
  get_sha1: detect buggy calls with multiple disambiguators
2016-10-06 14:53:10 -07:00
Duy Nguyen
7431596ab1 git-commit.txt: clarify --patch mode with pathspec
How pathspec is used, with and without --interactive/--patch, is
different. But this is not clear from the document. These changes hint
the user to keep reading (to option #5) instead of stopping at #2 and
assuming --patch/--interactive behaves the same way.

And since all the options listed here always mention how the index is
involved (or not) in the final commit, add that bit for #5 as well. This
"on top of the index" is implied when you head over git-add(1), but if
you just go straight to the "Interactive mode" and not read what git-add
is for, you may miss it.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-05 10:17:40 -07:00
Junio C Hamano
a17505f262 diff: introduce diff.wsErrorHighlight option
With the preparatory steps, it has become trivial to teach the
system a new diff.wsErrorHighlight configuration that gives the
default value for --ws-error-highlight command line option.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-04 15:49:05 -07:00
Junio C Hamano
0cf36115dc Sync with 2.10.1
* maint:
  Git 2.10.1
2016-10-03 13:32:41 -07:00
Junio C Hamano
30d687dfd5 Seventh batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-03 13:32:19 -07:00
Junio C Hamano
8f0e543950 Merge branch 'pb/rev-list-reverse-with-count'
Doc update to clarify what "log -3 --reverse" does.

* pb/rev-list-reverse-with-count:
  rev-list-options: clarify the usage of --reverse
2016-10-03 13:30:39 -07:00
Junio C Hamano
347408496a Merge branch 'ik/gitweb-force-highlight'
"gitweb" can spawn "highlight" to show blob contents with
(programming) language-specific syntax highlighting, but only
when the language is known.  "highlight" can however be told
to make the guess itself by giving it "--force" option, which
has been enabled.

* ik/gitweb-force-highlight:
  gitweb: use highlight's shebang detection
  gitweb: remove unused guess_file_syntax() parameter
2016-10-03 13:30:34 -07:00
Junio C Hamano
6406bdc0b9 Git 2.10.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-03 13:24:18 -07:00
Junio C Hamano
3d0049ea35 Merge branch 'jk/doc-cvs-update' into maint
Documentation around tools to import from CVS was fairly outdated.

* jk/doc-cvs-update:
  docs/cvs-migration: mention cvsimport caveats
  docs/cvs-migration: update link to cvsps homepage
  docs/cvsimport: prefer cvs-fast-export to parsecvs
2016-10-03 13:22:25 -07:00
Petr Stodulka
26a7b23429 http: control GSSAPI credential delegation
Delegation of credentials is disabled by default in libcurl since
version 7.21.7 due to security vulnerability CVE-2011-2192. Which
makes troubles with GSS/kerberos authentication when delegation
of credentials is required. This can be changed with option
CURLOPT_GSSAPI_DELEGATION in libcurl with set expected parameter
since libcurl version 7.22.0.

This patch provides new configuration variable http.delegation
which corresponds to curl parameter "--delegation" (see man 1 curl).

The following values are supported:

* none (default).
* policy
* always

Signed-off-by: Petr Stodulka <pstodulk@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-29 20:39:23 -07:00
Junio C Hamano
3ef7618e61 Sync with maint
* maint:
  Prepare for 2.10.1
2016-09-29 16:58:29 -07:00
Junio C Hamano
641b158a28 Sixth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-29 16:58:20 -07:00
Junio C Hamano
92d426662b Prepare for 2.10.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-29 16:52:15 -07:00
Junio C Hamano
bf3a55a21b Merge branch 'et/add-chmod-x' into maint
"git add --chmod=+x" added recently lacked documentation, which has
been corrected.

* et/add-chmod-x:
  add: document the chmod option
2016-09-29 16:49:46 -07:00
Junio C Hamano
d336b67568 Merge branch 'nd/checkout-disambiguation' into maint
"git checkout <word>" does not follow the usual disambiguation
rules when the <word> can be both a rev and a path, to allow
checking out a branch 'foo' in a project that happens to have a
file 'foo' in the working tree without having to disambiguate.
This was poorly documented and the check was incorrect when the
command was run from a subdirectory.

* nd/checkout-disambiguation:
  checkout: fix ambiguity check in subdir
  checkout.txt: document a common case that ignores ambiguation rules
  checkout: add some spaces between code and comment
2016-09-29 16:49:44 -07:00
Junio C Hamano
7106584137 Merge branch 'ep/doc-check-ref-format-example' into maint
A shell script example in check-ref-format documentation has been
fixed.

* ep/doc-check-ref-format-example:
  git-check-ref-format.txt: fixup documentation
2016-09-29 16:49:43 -07:00
Junio C Hamano
a74a3b7a0b Merge branch 'mm/config-color-ui-default-to-auto' into maint
Documentation for individual configuration variables to control use
of color (like `color.grep`) said that their default value is
'false', instead of saying their default is taken from `color.ui`.
When we updated the default value for color.ui from 'false' to
'auto' quite a while ago, all of them broke.  This has been
corrected.

* mm/config-color-ui-default-to-auto:
  Documentation/config: default for color.* is color.ui
2016-09-29 16:49:42 -07:00
Junio C Hamano
eb293ac8d6 Merge branch 'jk/reduce-gc-aggressive-depth' into maint
"git gc --aggressive" used to limit the delta-chain length to 250,
which is way too deep for gaining additional space savings and is
detrimental for runtime performance.  The limit has been reduced to
50.

* jk/reduce-gc-aggressive-depth:
  gc: default aggressive depth to 50
2016-09-29 16:49:42 -07:00
Pranit Bauva
04be69478f rev-list-options: clarify the usage of --reverse
Users often wonder if the oldest or the newest n commits are shown
by `log -n --reverse`.  Clarify that --reverse kicks in only after
deciding which commits are to be shown to unconfuse them.

Reported-by: Ruediger Meier <sweet_f_a@gmx.de>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-27 15:09:07 -07:00
Vegard Nossum
8779351dd7 revision: new rev^-n shorthand for rev^n..rev
"git log rev^..rev" is commonly used to show all work done on and merged
from a side branch. This patch introduces a shorthand "rev^-" for this
and additionally allows "rev^-$n" to mean "reachable from rev, excluding
what is reachable from the nth parent of rev". For example, for a
two-parent merge, you can use rev^-2 to get the set of commits which were
made to the main branch while the topic branch was prepared.

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-27 10:59:28 -07:00
Junio C Hamano
21f862b498 Fifth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-26 16:11:46 -07:00
Junio C Hamano
bd250ab5ce Merge branch 'jk/doc-cvs-update'
Documentation around tools to import from CVS was fairly outdated.

* jk/doc-cvs-update:
  docs/cvs-migration: mention cvsimport caveats
  docs/cvs-migration: update link to cvsps homepage
  docs/cvsimport: prefer cvs-fast-export to parsecvs
2016-09-26 16:09:22 -07:00
Junio C Hamano
31b83f361b Merge branch 'nd/checkout-disambiguation'
"git checkout <word>" does not follow the usual disambiguation
rules when the <word> can be both a rev and a path, to allow
checking out a branch 'foo' in a project that happens to have a
file 'foo' in the working tree without having to disambiguate.
This was poorly documented and the check was incorrect when the
command was run from a subdirectory.

* nd/checkout-disambiguation:
  checkout: fix ambiguity check in subdir
  checkout.txt: document a common case that ignores ambiguation rules
  checkout: add some spaces between code and comment
2016-09-26 16:09:18 -07:00
Junio C Hamano
e447d3182c Merge branch 'jt/format-patch-rfc'
In some projects, it is common to use "[RFC PATCH]" as the subject
prefix for a patch meant for discussion rather than application.  A
new option "--rfc" was a short-hand for "--subject-prefix=RFC PATCH"
to help the participants of such projects.

* jt/format-patch-rfc:
  format-patch: add "--rfc" for the common case of [RFC PATCH]
2016-09-26 16:09:17 -07:00
Junio C Hamano
2a1f3fe6e3 Merge branch 'ep/doc-check-ref-format-example'
A shell script example in check-ref-format documentation has been
fixed.

* ep/doc-check-ref-format-example:
  git-check-ref-format.txt: fixup documentation
2016-09-26 16:09:17 -07:00
Junio C Hamano
b7af6ae5cf Merge branch 'mh/diff-indent-heuristic'
Output from "git diff" can be made easier to read by selecting
which lines are common and which lines are added/deleted
intelligently when the lines before and after the changed section
are the same.  A command line option is added to help with the
experiment to find a good heuristics.

* mh/diff-indent-heuristic:
  blame: honor the diff heuristic options and config
  parse-options: add parse_opt_unknown_cb()
  diff: improve positioning of add/delete blocks in diffs
  xdl_change_compact(): introduce the concept of a change group
  recs_match(): take two xrecord_t pointers as arguments
  is_blank_line(): take a single xrecord_t as argument
  xdl_change_compact(): only use heuristic if group can't be matched
  xdl_change_compact(): fix compaction heuristic to adjust ixo
2016-09-26 16:09:16 -07:00
Junio C Hamano
7fcc056dfa Merge branch 'mm/config-color-ui-default-to-auto'
Documentation for individual configuration variables to control use
of color (like `color.grep`) said that their default value is
'false', instead of saying their default is taken from `color.ui`.
When we updated the default value for color.ui from 'false' to
'auto' quite a while ago, all of them broke.  This has been
corrected.

* mm/config-color-ui-default-to-auto:
  Documentation/config: default for color.* is color.ui
2016-09-26 16:09:15 -07:00
Jeff King
16ddcd403b sha1_array: let callbacks interrupt iteration
The callbacks for iterating a sha1_array must have a void
return.  This is unlike our usual for_each semantics, where
a callback may interrupt iteration and have its value
propagated. Let's switch it to the usual form, which will
enable its use in more places (e.g., where we are replacing
an existing iteration with a different data structure).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-26 11:46:41 -07:00
Ian Kelling
779a206632 gitweb: use highlight's shebang detection
The "highlight" binary can, in some cases, determine the language type
by the means of file contents, for example the shebang in the first line
for some scripting languages.  Make use of this autodetection for files
which syntax is not known by gitweb.  In that case, pass the blob
contents to "highlight --force"; the parameter is needed to make it
always generate HTML output (which includes HTML-escaping).

Although we now run highlight on files which do not end up highlighted,
performance is virtually unaffected because when we call highlight, it
is used for escaping HTML.  In the case that highlight is used, gitweb
calls sanitize() instead of esc_html(), and the latter is significantly
slower (it does more, being roughly a superset of sanitize()).  Simple
benchmark comparing performance of 'blob' view of files without syntax
highlighting in gitweb before and after this change indicates ±1%
difference in request time for all file types.  Benchmark was performed
on local instance on Debian, using Apache/2.4.23 web server and CGI.

Document the feature and improve syntax highlight documentation, add
test to ensure gitweb doesn't crash when language detection is used.

Signed-off-by: Ian Kelling <ian@iankelling.org>
Acked-by: Jakub Narębski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-25 16:39:11 -07:00
Jeff King
106b672ade docs/cvs-migration: mention cvsimport caveats
Back when this guide was written, cvsimport was the only
game in town. These days it is probably not the best option.
Rather than go into details, let's point people to the note
at the top of cvsimport which gives other options.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-22 11:23:45 -07:00
Jeff King
72e0877a1d docs/cvs-migration: update link to cvsps homepage
The old page gives a 404 now. Searching for "cvsps" via
Google returns a GitHub project page as the top hit.

Reported-by: Dan Pritts
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-22 11:23:45 -07:00
Jeff King
1eba3e5147 docs/cvsimport: prefer cvs-fast-export to parsecvs
parsecvs maintenance was taken over by ESR, and the name
changed to cvs-fast-export as it learned to support that
output format. Let's point to cvs-fast-export, as it should
have additional bug-fixes and be more convenient to use.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-22 11:23:45 -07:00
Junio C Hamano
6fe1b1407e Fourth batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21 15:20:44 -07:00
Junio C Hamano
0952ca8a95 Merge branch 'jk/reduce-gc-aggressive-depth'
"git gc --aggressive" used to limit the delta-chain length to 250,
which is way too deep for gaining additional space savings and is
detrimental for runtime performance.  The limit has been reduced to
50.

* jk/reduce-gc-aggressive-depth:
  gc: default aggressive depth to 50
2016-09-21 15:15:30 -07:00
Junio C Hamano
a9817aaef8 Merge branch 'et/add-chmod-x'
"git add --chmod=+x" added recently lacked documentation, which has
been corrected.

* et/add-chmod-x:
  add: document the chmod option
2016-09-21 15:15:19 -07:00
Junio C Hamano
7889ed25ac Merge branch 'js/cat-file-filters'
Even though "git hash-objects", which is a tool to take an
on-filesystem data stream and put it into the Git object store,
allowed to perform the "outside-world-to-Git" conversions (e.g.
end-of-line conversions and application of the clean-filter), and
it had the feature on by default from very early days, its reverse
operation "git cat-file", which takes an object from the Git object
store and externalize for the consumption by the outside world,
lacked an equivalent mechanism to run the "Git-to-outside-world"
conversion.  The command learned the "--filters" option to do so.

* js/cat-file-filters:
  cat-file: support --textconv/--filters in batch mode
  cat-file --textconv/--filters: allow specifying the path separately
  cat-file: introduce the --filters option
  cat-file: fix a grammo in the man page
2016-09-21 15:15:19 -07:00
Elia Pinto
92dece7024 git-check-ref-format.txt: fixup documentation
die is not a standard shell function. Use
a different shell code for the example.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21 11:12:41 -07:00
Josh Triplett
68e83a5b82 format-patch: add "--rfc" for the common case of [RFC PATCH]
Add an alias for --subject-prefix='RFC PATCH', which is used
commonly in some development communities to deserve such a
short-hand.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21 08:58:10 -07:00
Nguyễn Thái Ngọc Duy
19e5656345 checkout.txt: document a common case that ignores ambiguation rules
Normally we err on the safe side: if something can be seen as both an
SHA1 and a pathspec, we stop and scream. In checkout, there is one
exception added in 859fdab (git-checkout: improve error messages, detect
ambiguities. - 2008-07-23), to allow the common case "git checkout
branch". Let's document this exception.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-21 08:44:41 -07:00
Junio C Hamano
f6727b0509 Sync with maint
* maint:
  Start preparing for 2.10.1
2016-09-19 13:55:18 -07:00
Junio C Hamano
7c0304af62 Start preparing for 2.10.1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-19 13:54:50 -07:00
Junio C Hamano
f0b2db228b Merge branch 'po/range-doc' into maint
Clarify various ways to specify the "revision ranges" in the
documentation.

* po/range-doc:
  doc: revisions: sort examples and fix alignment of the unchanged
  doc: revisions: show revision expansion in examples
  doc: revisions - clarify reachability examples
  doc: revisions - define `reachable`
  doc: gitrevisions - clarify 'latter case' is revision walk
  doc: gitrevisions - use 'reachable' in page description
  doc: revisions: single vs multi-parent notation comparison
  doc: revisions: extra clarification of <rev>^! notation effects
  doc: revisions: give headings for the two and three dot notations
  doc: show the actual left, right, and boundary marks
  doc: revisions - name the left and right sides
  doc: use 'symmetric difference' consistently
2016-09-19 13:51:38 -07:00
Junio C Hamano
2118cdc7d3 Third batch for 2.11
This round they are somewhat bigger topics.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-19 13:48:25 -07:00
Michael Haggerty
5b162879e9 blame: honor the diff heuristic options and config
Teach "git blame" and "git annotate" the --compaction-heuristic and
--indent-heuristic options that are now supported by "git diff".

Also teach them to honor the `diff.compactionHeuristic` and
`diff.indentHeuristic` configuration options.

It would be conceivable to introduce separate configuration options for
"blame" and "annotate"; for example `blame.compactionHeuristic` and
`blame.indentHeuristic`. But it would be confusing to users if blame
output is inconsistent with diff output, so it makes more sense for them
to respect the same configuration.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-19 10:25:11 -07:00
Michael Haggerty
433860f3d0 diff: improve positioning of add/delete blocks in diffs
Some groups of added/deleted lines in diffs can be slid up or down,
because lines at the edges of the group are not unique. Picking good
shifts for such groups is not a matter of correctness but definitely has
a big effect on aesthetics. For example, consider the following two
diffs. The first is what standard Git emits:

    --- a/9c572b21dd090a1e5c5bb397053bf8043ffe7fb4:git-send-email.perl
    +++ b/6dcfa306f2b67b733a7eb2d7ded1bc9987809edb:git-send-email.perl
    @@ -231,6 +231,9 @@ if (!defined $initial_reply_to && $prompting) {
     }

     if (!$smtp_server) {
    +       $smtp_server = $repo->config('sendemail.smtpserver');
    +}
    +if (!$smtp_server) {
            foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
                    if (-x $_) {
                            $smtp_server = $_;

The following diff is equivalent, but is obviously preferable from an
aesthetic point of view:

    --- a/9c572b21dd090a1e5c5bb397053bf8043ffe7fb4:git-send-email.perl
    +++ b/6dcfa306f2b67b733a7eb2d7ded1bc9987809edb:git-send-email.perl
    @@ -230,6 +230,9 @@ if (!defined $initial_reply_to && $prompting) {
            $initial_reply_to =~ s/(^\s+|\s+$)//g;
     }

    +if (!$smtp_server) {
    +       $smtp_server = $repo->config('sendemail.smtpserver');
    +}
     if (!$smtp_server) {
            foreach (qw( /usr/sbin/sendmail /usr/lib/sendmail )) {
                    if (-x $_) {

This patch teaches Git to pick better positions for such "diff sliders"
using heuristics that take the positions of nearby blank lines and the
indentation of nearby lines into account.

The existing Git code basically always shifts such "sliders" as far down
in the file as possible. The only exception is when the slider can be
aligned with a group of changed lines in the other file, in which case
Git favors depicting the change as one add+delete block rather than one
add and a slightly offset delete block. This naive algorithm often
yields ugly diffs.

Commit d634d61ed6 improved the situation somewhat by preferring to
position add/delete groups to make their last line a blank line, when
that is possible. This heuristic does more good than harm, but (1) it
can only help if there are blank lines in the right places, and (2)
always picks the last blank line, even if there are others that might be
better. The end result is that it makes perhaps 1/3 as many errors as
the default Git algorithm, but that still leaves a lot of ugly diffs.

This commit implements a new and much better heuristic for picking
optimal "slider" positions using the following approach: First observe
that each hypothetical positioning of a diff slider introduces two
splits: one between the context lines preceding the group and the first
added/deleted line, and the other between the last added/deleted line
and the first line of context following it. It tries to find the
positioning that creates the least bad splits.

Splits are evaluated based only on the presence and locations of nearby
blank lines, and the indentation of lines near the split. Basically, it
prefers to introduce splits adjacent to blank lines, between lines that
are indented less, and between lines with the same level of indentation.
In more detail:

1. It measures the following characteristics of a proposed splitting
   position in a `struct split_measurement`:

   * the number of blank lines above the proposed split
   * whether the line directly after the split is blank
   * the number of blank lines following that line
   * the indentation of the nearest non-blank line above the split
   * the indentation of the line directly below the split
   * the indentation of the nearest non-blank line after that line

2. It combines the measured attributes using a bunch of
   empirically-optimized weighting factors to derive a `struct
   split_score` that measures the "badness" of splitting the text at
   that position.

3. It combines the `split_score` for the top and the bottom of the
   slider at each of its possible positions, and selects the position
   that has the best `split_score`.

I determined the initial set of weighting factors by collecting a corpus
of Git histories from 29 open-source software projects in various
programming languages. I generated many diffs from this corpus, and
determined the best positioning "by eye" for about 6600 diff sliders. I
used about half of the repositories in the corpus (corresponding to
about 2/3 of the sliders) as a training set, and optimized the weights
against this corpus using a crude automated search of the parameter
space to get the best agreement with the manually-determined values.
Then I tested the resulting heuristic against the full corpus. The
results are summarized in the following table, in column `indent-1`:

| repository            | count |      Git 2.9.0 |     compaction | compaction-fixed |       indent-1 |       indent-2 |
| --------------------- | ----- | -------------- | -------------- | ---------------- | -------------- | -------------- |
| afnetworking          |   109 |    89  (81.7%) |    37  (33.9%) |      37  (33.9%) |     2   (1.8%) |     2   (1.8%) |
| alamofire             |    30 |    18  (60.0%) |    14  (46.7%) |      15  (50.0%) |     0   (0.0%) |     0   (0.0%) |
| angular               |   184 |   127  (69.0%) |    39  (21.2%) |      23  (12.5%) |     5   (2.7%) |     5   (2.7%) |
| animate               |   313 |     2   (0.6%) |     2   (0.6%) |       2   (0.6%) |     2   (0.6%) |     2   (0.6%) |
| ant                   |   380 |   356  (93.7%) |   152  (40.0%) |     148  (38.9%) |    15   (3.9%) |    15   (3.9%) | *
| bugzilla              |   306 |   263  (85.9%) |   109  (35.6%) |      99  (32.4%) |    14   (4.6%) |    15   (4.9%) | *
| corefx                |   126 |    91  (72.2%) |    22  (17.5%) |      21  (16.7%) |     6   (4.8%) |     6   (4.8%) |
| couchdb               |    78 |    44  (56.4%) |    26  (33.3%) |      28  (35.9%) |     6   (7.7%) |     6   (7.7%) | *
| cpython               |   937 |   158  (16.9%) |    50   (5.3%) |      49   (5.2%) |     5   (0.5%) |     5   (0.5%) | *
| discourse             |   160 |    95  (59.4%) |    42  (26.2%) |      36  (22.5%) |    18  (11.2%) |    13   (8.1%) |
| docker                |   307 |   194  (63.2%) |   198  (64.5%) |     253  (82.4%) |     8   (2.6%) |     8   (2.6%) | *
| electron              |   163 |   132  (81.0%) |    38  (23.3%) |      39  (23.9%) |     6   (3.7%) |     6   (3.7%) |
| git                   |   536 |   470  (87.7%) |    73  (13.6%) |      78  (14.6%) |    16   (3.0%) |    16   (3.0%) | *
| gitflow               |   127 |     0   (0.0%) |     0   (0.0%) |       0   (0.0%) |     0   (0.0%) |     0   (0.0%) |
| ionic                 |   133 |    89  (66.9%) |    29  (21.8%) |      38  (28.6%) |     1   (0.8%) |     1   (0.8%) |
| ipython               |   482 |   362  (75.1%) |   167  (34.6%) |     169  (35.1%) |    11   (2.3%) |    11   (2.3%) | *
| junit                 |   161 |   147  (91.3%) |    67  (41.6%) |      66  (41.0%) |     1   (0.6%) |     1   (0.6%) | *
| lighttable            |    15 |     5  (33.3%) |     0   (0.0%) |       2  (13.3%) |     0   (0.0%) |     0   (0.0%) |
| magit                 |    88 |    75  (85.2%) |    11  (12.5%) |       9  (10.2%) |     1   (1.1%) |     0   (0.0%) |
| neural-style          |    28 |     0   (0.0%) |     0   (0.0%) |       0   (0.0%) |     0   (0.0%) |     0   (0.0%) |
| nodejs                |   781 |   649  (83.1%) |   118  (15.1%) |     111  (14.2%) |     4   (0.5%) |     5   (0.6%) | *
| phpmyadmin            |   491 |   481  (98.0%) |    75  (15.3%) |      48   (9.8%) |     2   (0.4%) |     2   (0.4%) | *
| react-native          |   168 |   130  (77.4%) |    79  (47.0%) |      81  (48.2%) |     0   (0.0%) |     0   (0.0%) |
| rust                  |   171 |   128  (74.9%) |    30  (17.5%) |      27  (15.8%) |    16   (9.4%) |    14   (8.2%) |
| spark                 |   186 |   149  (80.1%) |    52  (28.0%) |      52  (28.0%) |     2   (1.1%) |     2   (1.1%) |
| tensorflow            |   115 |    66  (57.4%) |    48  (41.7%) |      48  (41.7%) |     5   (4.3%) |     5   (4.3%) |
| test-more             |    19 |    15  (78.9%) |     2  (10.5%) |       2  (10.5%) |     1   (5.3%) |     1   (5.3%) | *
| test-unit             |    51 |    34  (66.7%) |    14  (27.5%) |       8  (15.7%) |     2   (3.9%) |     2   (3.9%) | *
| xmonad                |    23 |    22  (95.7%) |     2   (8.7%) |       2   (8.7%) |     1   (4.3%) |     1   (4.3%) | *
| --------------------- | ----- | -------------- | -------------- | ---------------- | -------------- | -------------- |
| totals                |  6668 |  4391  (65.9%) |  1496  (22.4%) |    1491  (22.4%) |   150   (2.2%) |   144   (2.2%) |
| totals (training set) |  4552 |  3195  (70.2%) |  1053  (23.1%) |    1061  (23.3%) |    86   (1.9%) |    88   (1.9%) |
| totals (test set)     |  2116 |  1196  (56.5%) |   443  (20.9%) |     430  (20.3%) |    64   (3.0%) |    56   (2.6%) |

In this table, the numbers are the count and percentage of human-rated
sliders that the corresponding algorithm got *wrong*. The columns are

* "repository" - the name of the repository used. I used the diffs
  between successive non-merge commits on the HEAD branch of the
  corresponding repository.

* "count" - the number of sliders that were human-rated. I chose most,
  but not all, sliders to rate from those among which the various
  algorithms gave different answers.

* "Git 2.9.0" - the default algorithm used by `git diff` in Git 2.9.0.

* "compaction" - the heuristic used by `git diff --compaction-heuristic`
  in Git 2.9.0.

* "compaction-fixed" - the heuristic used by `git diff
  --compaction-heuristic` after the fixes from earlier in this patch
  series. Note that the results are not dramatically different than
  those for "compaction". Both produce non-ideal diffs only about 1/3 as
  often as the default `git diff`.

* "indent-1" - the new `--indent-heuristic` algorithm, using the first
  set of weighting factors, determined as described above.

* "indent-2" - the new `--indent-heuristic` algorithm, using the final
  set of weighting factors, determined as described below.

* `*` - indicates that repo was part of training set used to determine
  the first set of weighting factors.

The fact that the heuristic performed nearly as well on the test set as
on the training set in column "indent-1" is a good indication that the
heuristic was not over-trained. Given that fact, I ran a second round of
optimization, using the entire corpus as the training set. The resulting
set of weights gave the results in column "indent-2". These are the
weights included in this patch.

The final result gives consistently and significantly better results
across the whole corpus than either `git diff` or `git diff
--compaction-heuristic`. It makes only about 1/30 as many errors as the
former and about 1/10 as many errors as the latter. (And a good fraction
of the remaining errors are for diffs that involve weirdly-formatted
code, sometimes apparently machine-generated.)

The tools that were used to do this optimization and analysis, along
with the human-generated data values, are recorded in a separate project
[1].

This patch adds a new command-line option `--indent-heuristic`, and a
new configuration setting `diff.indentHeuristic`, that activate this
heuristic. This interface is only meant for testing purposes, and should
be finalized before including this change in any release.

[1] https://github.com/mhagger/diff-slider-tools

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-19 10:25:11 -07:00
Matthieu Moy
14d16e2b35 Documentation/config: default for color.* is color.ui
Since 4c7f181 (make color.ui default to 'auto', 2013-06-10), the
default for color.* when nothing is set is 'auto' and we still claimed
that the default was 'false'. Be more precise by saying explicitly
that the default is to follow color.ui, and recall that the default is
'auto' to avoid one indirection for the reader.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-16 12:34:14 -07:00
Junio C Hamano
e510a86c81 Second batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-15 14:13:06 -07:00
Junio C Hamano
75d03ac84b First batch for 2.11
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-12 15:35:05 -07:00
Junio C Hamano
305d7f1339 Merge branch 'jk/diff-submodule-diff-inline'
The "git diff --submodule={short,log}" mechanism has been enhanced
to allow "--submodule=diff" to show the patch between the submodule
commits bound to the superproject.

* jk/diff-submodule-diff-inline:
  diff: teach diff to display submodule difference with an inline diff
  submodule: refactor show_submodule_summary with helper function
  submodule: convert show_submodule_summary to use struct object_id *
  allow do_submodule_path to work even if submodule isn't checked out
  diff: prepare for additional submodule formats
  graph: add support for --line-prefix on all graph-aware output
  diff.c: remove output_prefix_length field
  cache: add empty_tree_oid object and helper function
2016-09-12 15:34:31 -07:00
Thomas Gummerer
7ef7903e60 add: document the chmod option
The git add --chmod option was introduced in 4e55ed3 ("add: add
--chmod=+x / --chmod=-x options", 2016-05-31), but was never
documented.  Document the feature.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-12 15:03:32 -07:00
Johannes Schindelin
321459439e cat-file: support --textconv/--filters in batch mode
With this patch, --batch can be combined with --textconv or --filters.
For this to work, the input needs to have the form

	<object name><single white space><path>

so that the filters can be chosen appropriately.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-11 14:48:15 -07:00
Johannes Schindelin
7bcf341453 cat-file --textconv/--filters: allow specifying the path separately
There are circumstances when it is relatively easy to figure out the
object name for a given path, but not the name of the containing tree.
For example, when looking at a diff generated by Git, the object names
are recorded, but not the revision. As a matter of fact, the revisions
from which the diff was generated may not even exist locally.

In such a case, the user would have to generate a fake revision just to
be able to use --textconv or --filters.

Let's simplify this dramatically, because we do not really need that
revision at all: all we care about is that we know the path. In the
scenario described above, we do know the path, and we just want to
specify it separately from the object name.

Example usage:

	git cat-file --textconv --path=main.c 0f1937fd

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-11 14:48:15 -07:00
Johannes Schindelin
b9e62f6011 cat-file: introduce the --filters option
The --filters option applies the convert_to_working_tree() filter for
the path when showing the contents of a regular file blob object;
the contents are written out as-is for other types of objects.

This feature comes in handy when a 3rd-party tool wants to work with
the contents of files from past revisions as if they had been checked
out, but without detouring via temporary files.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-11 14:47:46 -07:00
Junio C Hamano
cda1bbd474 Sync with maint
* maint:
  Prepare for 2.9.4
2016-09-08 22:00:53 -07:00
Junio C Hamano
95b18556aa Start the 2.11 cycle
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-09-08 22:00:35 -07:00
Junio C Hamano
d012326d48 Merge branch 'hv/doc-commit-reference-style'
A small doc update.

* hv/doc-commit-reference-style:
  SubmittingPatches: use gitk's "Copy commit summary" format
2016-09-08 21:49:51 -07:00
Junio C Hamano
02c6c14d6c Merge branch 'sb/submodule-clone-rr'
"git clone --resurse-submodules --reference $path $URL" is a way to
reduce network transfer cost by borrowing objects in an existing
$path repository when cloning the superproject from $URL; it
learned to also peek into $path for presense of corresponding
repositories of submodules and borrow objects from there when able.

* sb/submodule-clone-rr:
  clone: recursive and reference option triggers submodule alternates
  clone: implement optional references
  clone: clarify option_reference as required
  clone: factor out checking for an alternate path
  submodule--helper update-clone: allow multiple references
  submodule--helper module-clone: allow multiple references
  t7408: merge short tests, factor out testing method
  t7408: modernize style
2016-09-08 21:49:50 -07:00
Junio C Hamano
00d27937bf Merge branch 'jh/status-v2-porcelain'
Enhance "git status --porcelain" output by collecting more data on
the state of the index and the working tree files, which may
further be used to teach git-prompt (in contrib/) to make fewer
calls to git.

* jh/status-v2-porcelain:
  status: unit tests for --porcelain=v2
  test-lib-functions.sh: add lf_to_nul helper
  git-status.txt: describe --porcelain=v2 format
  status: print branch info with --porcelain=v2 --branch
  status: print per-file porcelain v2 status data
  status: collect per-file data for --porcelain=v2
  status: support --porcelain[=<version>]
  status: cleanup API to wt_status_print
  status: rename long-format print routines
2016-09-08 21:49:50 -07:00
Junio C Hamano
d0b61dc65f Merge branch 'po/range-doc'
Clarify various ways to specify the "revision ranges" in the
documentation.

* po/range-doc:
  doc: revisions: sort examples and fix alignment of the unchanged
  doc: revisions: show revision expansion in examples
  doc: revisions - clarify reachability examples
  doc: revisions - define `reachable`
  doc: gitrevisions - clarify 'latter case' is revision walk
  doc: gitrevisions - use 'reachable' in page description
  doc: revisions: single vs multi-parent notation comparison
  doc: revisions: extra clarification of <rev>^! notation effects
  doc: revisions: give headings for the two and three dot notations
  doc: show the actual left, right, and boundary marks
  doc: revisions - name the left and right sides
  doc: use 'symmetric difference' consistently
2016-09-08 21:49:49 -07:00