Commit Graph

4326 Commits

Author SHA1 Message Date
Junio C Hamano
8267cd11d6 Sync with 2.2.3 2015-09-04 10:29:28 -07:00
Jeff King
78f23bdf68 show-branch: use a strbuf for reflog descriptions
When we show "branch@{0}", we format into a fixed-size
buffer using sprintf. This can overflow if you have long
branch names. We can fix it by using a temporary strbuf.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-04 09:48:26 -07:00
Junio C Hamano
311e5ce2cc Merge branch 'dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update' into maint
When re-priming the cache-tree opportunistically while committing
the in-core index as-is, we mistakenly invalidated the in-core
index too aggressively, causing the experimental split-index code
to unnecessarily rewrite the on-disk index file(s).

* dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update:
  commit: don't rewrite shared index unnecessarily
2015-09-03 19:18:02 -07:00
Junio C Hamano
ae6ac8483b Merge branch 'jc/calloc-pathspec' into maint
Minor code cleanup.

* jc/calloc-pathspec:
  ps_matched: xcalloc() takes nmemb and then element size
2015-09-03 19:18:00 -07:00
Junio C Hamano
e654e3b574 Merge branch 'jk/rev-list-has-no-notes' into maint
"git rev-list" does not take "--notes" option, but did not complain
when one is given.

* jk/rev-list-has-no-notes:
  rev-list: make it obvious that we do not support notes
2015-09-03 19:17:53 -07:00
Junio C Hamano
03ea02771a Merge branch 'mh/get-remote-group-fix' into maint
An off-by-one error made "git remote" to mishandle a remote with a
single letter nickname.

* mh/get-remote-group-fix:
  get_remote_group(): use skip_prefix()
  get_remote_group(): eliminate superfluous call to strcspn()
  get_remote_group(): rename local variable "space" to "wordlen"
  get_remote_group(): handle remotes with single-character names
2015-09-03 19:17:48 -07:00
Jeff King
add00ba2de date: make "local" orthogonal to date format
Most of our "--date" modes are about the format of the date:
which items we show and in what order. But "--date=local" is
a bit of an oddball. It means "show the date in the normal
format, but using the local timezone". The timezone we use
is orthogonal to the actual format, and there is no reason
we could not have "localized iso8601", etc.

This patch adds a "local" boolean field to "struct
date_mode", and drops the DATE_LOCAL element from the
date_mode_type enum (it's now just DATE_NORMAL plus
local=1). The new feature is accessible to users by adding
"-local" to any date mode (e.g., "iso-local"), and we retain
"local" as an alias for "default-local" for backwards
compatibility.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-03 15:45:26 -07:00
Junio C Hamano
7662973ea3 Merge branch 'jk/am-rerere-lock-fix'
Recent "git am" introduced a double-locking failure when used with
the "--3way" option that invokes rerere machinery.

* jk/am-rerere-lock-fix:
  rerere: release lockfile in non-writing functions
2015-09-03 14:14:01 -07:00
Stefan Beller
0ea306ef17 submodule: rewrite module_name shell function in C
This implements the helper `name` in C instead of shell,
yielding a nice performance boost.

Before this patch, I measured a time (best out of three):

  $ time ./t7400-submodule-basic.sh  >/dev/null
    real	0m11.066s
    user	0m3.348s
    sys	0m8.534s

With this patch applied I measured (also best out of three)

  $ time ./t7400-submodule-basic.sh  >/dev/null
    real	0m10.063s
    user	0m3.044s
    sys	0m7.487s

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-03 14:12:40 -07:00
Stefan Beller
74703a1e4d submodule: rewrite module_list shell function in C
Most of the submodule operations work on a set of submodules.
Calculating and using this set is usually done via:

       module_list "$@" | {
           while read mode sha1 stage sm_path
           do
                # the actual operation
           done
       }

Currently the function `module_list` is implemented in the
git-submodule.sh as a shell script wrapping a perl script.
The rewrite is in C, such that it is faster and can later be
easily adapted when other functions are rewritten in C.

git-submodule.sh, similar to the builtin commands, will navigate
to the top-most directory of the repository and keep the
subdirectory as a variable. As the helper is called from
within the git-submodule.sh script, we are already navigated
to the root level, but the path arguments are still relative
to the subdirectory we were in when calling git-submodule.sh.
That's why there is a `--prefix` option pointing to an alternative
path which to anchor relative path arguments.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-03 14:12:40 -07:00
Junio C Hamano
81d0e33a22 Merge branch 'dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update'
When re-priming the cache-tree opportunistically while committing
the in-core index as-is, we mistakenly invalidated the in-core
index too aggressively, causing the experimental split-index code
to unnecessarily rewrite the on-disk index file(s).

* dt/commit-preserve-base-index-upon-opportunistic-cache-tree-update:
  commit: don't rewrite shared index unnecessarily
2015-09-01 16:31:29 -07:00
Junio C Hamano
bc1c6009c6 Merge branch 'ah/reflog-typofix-in-error'
Error string fix.

* ah/reflog-typofix-in-error:
  reflog: add missing single quote to error message
2015-09-01 16:31:18 -07:00
Junio C Hamano
0b20a4680b Merge branch 'ah/read-tree-usage-string'
Usage string fix.

* ah/read-tree-usage-string:
  read-tree: replace bracket set with parentheses to clarify usage
2015-09-01 16:31:16 -07:00
Junio C Hamano
8746e30541 Merge branch 'ah/pack-objects-usage-strings'
Usage string fix.

* ah/pack-objects-usage-strings:
  pack-objects: place angle brackets around placeholders in usage strings
2015-09-01 16:31:12 -07:00
Jeff King
9dd330e6ca rerere: release lockfile in non-writing functions
There's a bug in builtin/am.c in which we take a lock on
MERGE_RR recursively. But rather than fix am.c, this patch
fixes the confusing interface from rerere.c that caused the
bug. Read on for the gory details.

The setup_rerere() function both reads the existing MERGE_RR
file, and takes MERGE_RR.lock. In the rerere() and
rerere_forget() functions, we end up in write_rr(), which
will then commit the lock file.

But for functions like rerere_clear() that do not write to
MERGE_RR, we expect the caller to have handled
setup_rerere(). That caller would then need to release the
lockfile, but it can't; the lock struct is local to
rerere.c.

For builtin/rerere.c, this is OK. We run a single rerere
operation and then exit immediately, which has the side
effect of rolling back the lockfile.

But in builtin/am.c, this is actively wrong. If we run "git
am -3 --skip", we call setup-rerere twice without releasing
the lock:

  1. The "--skip" causes us to call am_rerere_clear(), which
     calls setup_rerere(), but never drops the lock.

  2. We then proceed to the next patch.

  3. The "--3way" may cause us to call rerere() to handle
     conflicts in that patch, but we are already holding the
     lock. The lockfile code dies with:

     BUG: prepare_tempfile_object called for active object

We could fix this by having rerere_clear() call
rollback_lock_file(). But it feels a bit odd for it to roll
back a lockfile that it did not itself take. So let's
simplify the interface further, and handle setup_rerere in
the function itself, taking away the question from the
caller over whether they need to do so.

We can give rerere_gc() the same treatment, as well (even
though it doesn't have any callers besides builtin/rerere.c
at this point). Note that these functions don't take flags
from their callers to pass along to setup_rerere; that's OK,
because the flags would not be meaningful for what they are
doing.

Both of those functions need to hold the lock because even
though they do not write to MERGE_RR, they are still writing
and should be protected from a simultaneous "rerere" run.
But rerere_remaining(), "rerere diff", and "rerere status"
are all read-only operations. They want to setup_rerere(),
but do not care about taking the lock in the first place.
Since our update of MERGE_RR is the usual atomic rename done
by commit_lock_file, they can just do a lockless read. For
that, we teach setup_rerere a READONLY flag to avoid the
lock.

As a bonus, this pushes builtin/rerere.c's setup_rerere call
closer to the functions that use it. Which means that "git
rerere totally-bogus-command" will no longer silently
exit(0) in a repository without rerere enabled.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-01 15:52:54 -07:00
Junio C Hamano
e95c3fb54f Merge branch 'sg/describe-contains'
"git describe" without argument defaulted to describe the HEAD
commit, but "git describe --contains" didn't.  Arguably, in a
repository used for active development, such defaulting would not
be very useful as the tip of branch is typically not tagged, but it
is better to be consistent.

* sg/describe-contains:
  describe --contains: default to HEAD when no commit-ish is given
2015-08-31 15:39:10 -07:00
Junio C Hamano
b21089db6a Merge branch 'db/push-sign-if-asked'
The client side codepaths in "git push" have been cleaned up
and the user can request to perform an optional "signed push",
i.e. sign only when the other end accepts signed push.

* db/push-sign-if-asked:
  push: add a config option push.gpgSign for default signed pushes
  push: support signing pushes iff the server supports it
  builtin/send-pack.c: use parse_options API
  config.c: rename git_config_maybe_bool_text and export it as git_parse_maybe_bool
  transport: remove git_transport_options.push_cert
  gitremote-helpers.txt: document pushcert option
  Documentation/git-send-pack.txt: document --signed
  Documentation/git-send-pack.txt: wrap long synopsis line
  Documentation/git-push.txt: document when --signed may fail
2015-08-31 15:39:08 -07:00
Junio C Hamano
5b6211aee1 Merge branch 'jk/notes-merge-config'
"git notes merge" can be told with "--strategy=<how>" option how to
automatically handle conflicts; this can now be configured by
setting notes.mergeStrategy configuration variable.

* jk/notes-merge-config:
  notes: teach git-notes about notes.<name>.mergeStrategy option
  notes: add notes.mergeStrategy option to select default strategy
  notes: add tests for --commit/--abort/--strategy exclusivity
  notes: extract parse_notes_merge_strategy to notes-utils
  notes: extract enum notes_merge_strategy to notes-utils.h
  notes: document cat_sort_uniq rewriteMode
2015-08-31 15:39:05 -07:00
Junio C Hamano
d75bb73bcf Merge branch 'jc/am-state-fix'
Recent reimplementation of "git am" changed the format of state
files kept in $GIT_DIR/rebase-apply/ without meaning to do so,
primarily because write_file() API was cumbersome to use and it was
easy to mistakenly make text files with incomplete lines.  Update
write_file() interface to make it harder to misuse.

* jc/am-state-fix:
  write_file(): drop caller-supplied LF from calls to create a one-liner file
  write_file_v(): do not leave incomplete line at the end
  write_file(): drop "fatal" parameter
  builtin/am: make sure state files are text
  builtin/am: introduce write_state_*() helper functions
2015-08-31 15:39:03 -07:00
Junio C Hamano
2ba6183b0b Merge branch 'jc/log-p-cc'
"git log --cc" did not show any patch, even though most of the time
the user meant "git log --cc -p -m" to see patch output for commits
with a single parent, and combined diff for merge commits.  The
command is taught to DWIM "--cc" (without "--raw" and other forms
of output specification) to "--cc -p -m".

* jc/log-p-cc:
  builtin/log.c: minor reformat
  log: show merge commit when --cc is given
  log: when --cc is given, default to -p unless told otherwise
  log: rename "tweak" helpers
2015-08-31 15:38:59 -07:00
Junio C Hamano
0bb71fb36d Merge branch 'jk/rev-list-has-no-notes'
"git rev-list" does not take "--notes" option, but did not complain
when one is given.

* jk/rev-list-has-no-notes:
  rev-list: make it obvious that we do not support notes
2015-08-31 15:38:55 -07:00
Junio C Hamano
5a4f07b322 Merge branch 'hv/submodule-config'
The gitmodules API accessed from the C code learned to cache stuff
lazily.

* hv/submodule-config:
  submodule: allow erroneous values for the fetchRecurseSubmodules option
  submodule: use new config API for worktree configurations
  submodule: extract functions for config set and lookup
  submodule: implement a config API for lookup of .gitmodules values
2015-08-31 15:38:52 -07:00
Junio C Hamano
fc9dfda1be Merge branch 'sg/config-name-only'
"git config --list" output was hard to parse when values consist of
multiple lines.  "--name-only" option is added to help this.

* sg/config-name-only:
  get_urlmatch: avoid useless strbuf write
  format_config: simplify buffer handling
  format_config: don't init strbuf
  config: restructure format_config() for better control flow
  completion: list variable names reliably with 'git config --name-only'
  config: add '--name-only' option to list only variable names
2015-08-31 15:38:50 -07:00
Alex Henrie
cc75addd23 show-ref: place angle brackets around variables in usage string
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31 09:33:53 -07:00
David Turner
475a34451f commit: don't rewrite shared index unnecessarily
Remove a cache invalidation which would cause the shared index to be
rewritten on as-is commits.

When the cache-tree has changed, we need to update it.  But we don't
necessarily need to update the shared index.  So setting
active_cache_changed to SOMETHING_CHANGED is unnecessary.  Instead, we
let update_main_cache_tree just update the CACHE_TREE_CHANGED bit.

In order to test this, make test-dump-split-index not segfault on
missing replace_bitmap/delete_bitmap.  This new codepath is not called
now that the test passes, but is necessary to avoid a segfault when the
new test is run with the old builtin/commit.c code.

Signed-off-by: David Turner <dturner@twopensource.com>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31 08:41:07 -07:00
Alex Henrie
9476c2c39e read-tree: replace bracket set with parentheses to clarify usage
-u and -i can only be given if -m, --reset, or --prefix is given.
Without parentheses, it looks like -u and -i can be used no matter
what, and the second pair of brackets is confusing.

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28 12:01:37 -07:00
Alex Henrie
b8c1d27577 pack-objects: place angle brackets around placeholders in usage strings
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28 11:59:10 -07:00
Alex Henrie
99885bc0ef reflog: add missing single quote to error message
The error message can be seen by running
`git config gc.reflogexpire foo` and then `git reflog expire`.

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-28 09:42:13 -07:00
Junio C Hamano
88bd19be2f Merge branch 'jc/calloc-pathspec'
* jc/calloc-pathspec:
  ps_matched: xcalloc() takes nmemb and then element size
2015-08-26 15:45:34 -07:00
Junio C Hamano
74702c3825 Merge branch 'pt/am-builtin'
Rewrite "am" in "C".

* pt/am-builtin:
  i18n: am: fix typo in description of -b option
2015-08-26 15:45:33 -07:00
Junio C Hamano
b7d2a15b9f Merge branch 'pt/am-builtin-abort-fix'
"git am" that was recently reimplemented in C had a performance
regression in "git am --abort" that goes back to the version before
an attempted (and failed) patch application.

* pt/am-builtin-abort-fix:
  am --skip/--abort: merge HEAD/ORIG_HEAD tree into index
2015-08-26 15:45:32 -07:00
Jiang Xin
1fb5a0ea96 i18n: am: fix typo in description of -b option
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-26 12:51:43 -07:00
Junio C Hamano
52f6893d35 Merge branch 'jk/guess-repo-name-regression-fix' into maint
"git clone $URL" in recent releases of Git contains a regression in
the code that invents a new repository name incorrectly based on
the $URL.  This has been corrected.

* jk/guess-repo-name-regression-fix:
  clone: use computed length in guess_dir_name
  clone: add tests for output directory
2015-08-25 16:09:17 -07:00
Junio C Hamano
db86e61cbb Merge branch 'mh/tempfile'
The "lockfile" API has been rebuilt on top of a new "tempfile" API.

* mh/tempfile:
  credential-cache--daemon: use tempfile module
  credential-cache--daemon: delete socket from main()
  gc: use tempfile module to handle gc.pid file
  lock_repo_for_gc(): compute the path to "gc.pid" only once
  diff: use tempfile module
  setup_temporary_shallow(): use tempfile module
  write_shared_index(): use tempfile module
  register_tempfile(): new function to handle an existing temporary file
  tempfile: add several functions for creating temporary files
  prepare_tempfile_object(): new function, extracted from create_tempfile()
  tempfile: a new module for handling temporary files
  commit_lock_file(): use get_locked_file_path()
  lockfile: add accessor get_lock_file_path()
  lockfile: add accessors get_lock_file_fd() and get_lock_file_fp()
  create_bundle(): duplicate file descriptor to avoid closing it twice
  lockfile: move documentation to lockfile.h and lockfile.c
2015-08-25 14:57:09 -07:00
Junio C Hamano
424f89f098 Merge branch 'pt/am-builtin-options'
After "git am --opt1" stops, running "git am --opt2" pays attention
to "--opt2" only for the patch that caused the original invocation
to stop.

* pt/am-builtin-options:
  am: let --signoff override --no-signoff
  am: let command-line options override saved options
  test_terminal: redirect child process' stdin to a pty
2015-08-25 14:57:08 -07:00
Junio C Hamano
32561f5dd3 Merge branch 'dt/notes-multiple'
When linked worktree is used, simultaneous "notes merge" instances
for the same ref in refs/notes/* are prevented from stomping on
each other.

* dt/notes-multiple:
  notes: handle multiple worktrees
  worktrees: add find_shared_symref
2015-08-25 14:57:08 -07:00
Junio C Hamano
3acf8dd887 builtin/log.c: minor reformat
Two logical lines that were not overly long was split in the middle,
which made them read worse.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-25 13:11:21 -07:00
Junio C Hamano
1f76a10b2d write_file(): drop caller-supplied LF from calls to create a one-liner file
All of the callsites covered by this change call write_file() or
write_file_gently() to create a one-liner file.  Drop the caller
supplied LF and let these callees to append it as necessary.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-25 12:49:19 -07:00
Junio C Hamano
e7ffa38c6e write_file_v(): do not leave incomplete line at the end
All existing callers to this function use it to produce a text file
or an empty file, and a new callsite that mimick them must end their
payload with a LF.  If they forget to do so, the resulting file will
end with an incomplete line.

Teach write_file_v() to complete the incomplete line, if exists, so
that the callers do not have to.

With this, the caller-side fix in builtin/am.c becomes unnecessary.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-25 12:48:39 -07:00
SZEDER Gábor
2bd07065c3 describe --contains: default to HEAD when no commit-ish is given
'git describe --contains' doesn't default to HEAD when no commit is
given, and it doesn't produce any output, not even an error:

  ~/src/git ((v2.5.0))$ ./git describe --contains
  ~/src/git ((v2.5.0))$ ./git describe --contains HEAD
  v2.5.0^0

Unlike other 'git describe' options, the '--contains' code path is
implemented by calling 'name-rev' with a bunch of options plus all the
commit-ishes that were passed to 'git describe'.  If no commit-ish was
present, then 'name-rev' got invoked with none, which then leads to the
behavior illustrated above.

Porcelain commands usually default to HEAD when no commit-ish is given,
and 'git describe' already does so in all other cases, so it should do
so with '--contains' as well.

Pass HEAD to 'name-rev' when no commit-ish is given on the command line
to make '--contains' behave consistently with other 'git describe'
options.  While at it, use argv_array_pushv() instead of the loop to
pass commit-ishes to 'git name-rev'.

'git describe's short help already indicates that the commit-ish is
optional, but the synopsis in the man page doesn't, so update it
accordingly as well.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-25 09:35:13 -07:00
Junio C Hamano
7b8419f094 Merge 'jk/git-path' into kn/for-each-tag
* jk/git-path:
  memoize common git-path "constant" files
  get_repo_path: refactor path-allocation
  find_hook: keep our own static buffer
  refs.c: remove_empty_directories can take a strbuf
  refs.c: avoid git_path assignment in lock_ref_sha1_basic
  refs.c: avoid repeated git_path calls in rename_tmp_log
  refs.c: simplify strbufs in reflog setup and writing
  path.c: drop git_path_submodule
  refs.c: remove extra git_path calls from read_loose_refs
  remote.c: drop extraneous local variable from migrate_file
  prefer mkpathdup to mkpath in assignments
  prefer git_pathdup to git_path in some possibly-dangerous cases
  add_to_alternates_file: don't add duplicate entries
  t5700: modernize style
  cache.h: complete set of git_path_submodule helpers
  cache.h: clarify documentation for git_path, et al
2015-08-24 15:30:43 -07:00
Junio C Hamano
a123b19eec Merge 'kn/for-each-tag-branch' into kn/for-each-tag
* kn/for-each-tag-branch:
  for-each-ref: add '--contains' option
  ref-filter: implement '--contains' option
  parse-options.h: add macros for '--contains' option
  parse-option: rename parse_opt_with_commit()
  for-each-ref: add '--merged' and '--no-merged' options
  ref-filter: implement '--merged' and '--no-merged' options
  ref-filter: add parse_opt_merge_filter()
  for-each-ref: add '--points-at' option
  ref-filter: implement '--points-at' option
  tag: libify parse_opt_points_at()
  t6302: for-each-ref tests for ref-filter APIs
2015-08-24 15:30:29 -07:00
Junio C Hamano
12d6ce1dba write_file(): drop "fatal" parameter
All callers except three passed 1 for the "fatal" parameter to ask
this function to die upon error, but to a casual reader of the code,
it was not all obvious what that 1 meant.  Instead, split the
function into two based on a common write_file_v() that takes the
flag, introduce write_file_gently() as a new way to attempt creating
a file without dying on error, and make three callers to call it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-24 13:09:02 -07:00
Junio C Hamano
57c867efe4 builtin/am: make sure state files are text
We forgot to terminate the payload given to write_file() with LF,
resulting in files that end with an incomplete line.  Teach the
wrappers builtin/am uses to make sure it adds LF at the end as
necessary.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-24 13:01:59 -07:00
Junio C Hamano
25b763ba7a builtin/am: introduce write_state_*() helper functions
There are many calls to write_file() that repeat the same pattern in
the implementation of the builtin version of "am".  They all share
the same traits, i.e they

 - produce a text file with a single string in it;

 - have enough information to produce the entire contents of that
   file;

 - generate the pathname of the file by making a call to am_path(); and

 - they ask write_file() to die() upon failure.

The slight differences among the call sites throw them into roughly
three categories:

 - many write either "t" or "f" based on a boolean value to a file;

 - some write the integer value in decimal text;

 - some others write more general string, e.g. an object name in
   hex, an empty string (i.e. the presense of the file itself serves
   as a flag), etc.

Introduce three helpers, write_state_bool(), write_state_count() and
write_state_text(), to reduce direct calls to write_file().

This is a preparatory step for the next step to ensure that no
"state" file this command leaves in $GIT_DIR is with an incomplete
line at the end.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-24 11:18:59 -07:00
Jeff King
2aea7a51a1 rev-list: make it obvious that we do not support notes
The rev-list command does not have the internal
infrastructure to display notes. Running:

  git rev-list --notes HEAD

will silently ignore the "--notes" option. Running:

  git rev-list --notes --grep=. HEAD

will crash on an assert. Running:

  git rev-list --format=%N HEAD

will place a literal "%N" in the output (it does not even
expand to an empty string).

Let's have rev-list tell the user that it cannot fill the
user's request, rather than silently producing wrong data.
Likewise, let's remove mention of the notes options from the
rev-list documentation.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-24 10:33:15 -07:00
Junio C Hamano
82dee4160c log: show merge commit when --cc is given
We defaulted to ignoring merge diffs because long long ago, in a
galaxy far away, we didn't have a great way to show the diffs.  The
whole "--cc" option goes back to January '06 and commit d8f4790e6f
("diff-tree --cc: denser combined diff output for a merge commit").
And before that option - so for about 8 months - we had no good way
to show the diffs of merges in a good dense way.  So the whole
"don't show diffs for merges by default" actually made a lot of
sense originally, because our merge diffs were not very useful.

And this was carried forward to this day.  "git log --cc" still
ignores merge commits, and you need to say "git log -m --cc" to view
a sensible rendition of merge and non-merge commits, even with the
previous change to make "--cc" imply "-p".

Teach "git log" that "--cc" means the user wants to see interesting
changes in merge commits by turning "-m" on.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 15:06:04 -07:00
Junio C Hamano
c7eaf8b4c3 log: when --cc is given, default to -p unless told otherwise
The "--cc" option to "git log" is clearly a request to show some
sort of combined diff (be it --patch or --raw), but traditionally
we required the command line to explicitly ask for "git log -p --cc".

Teach the command line parser to treat a lone "--cc" as if the user
specified "-p --cc".  Formats that do ask for other forms of diff
output, e.g. "log --raw --cc", are not overriden.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 15:03:57 -07:00
Junio C Hamano
b130c706ec log: rename "tweak" helpers
The revision walking API allows the callers to tweak its
configuration at the last minute, immediately after all the revision
and pathspec parameters are parsed from the command line but before
the default actions are decided based on them, by defining a "tweak"
callback function when calling setup_revisions().  Traditionally,
this facility was used by "git show" to turn on the patch output
"-p" by default when no diff output option (e.g.  "--raw" or "-s" to
squelch the output altogether) is given on the command line, and
further give dense combined diffs "--cc" for merge commits when no
option to countermand it (e.g. "-m" to show pairwise patches).

Recently, "git log" started using the same facility, but we named
the callback function "default_follow_tweak()", as if the only kind
of tweaking we would want for "git log" will forever be limited to
turning "--follow" on by default when told by a configuration
variable.  That was myopic.

Rename it to more generic name "log_setup_revisions_tweak()", and
match the one used by show "show_setup_revisions_tweak()".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 14:23:05 -07:00
Jeff King
a92330d21c get_urlmatch: avoid useless strbuf write
We create a strbuf only to insert a single string, pass the
resulting buffer to a function (which does not modify the
string), and then free it. We can just pass the original
string instead.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 13:16:50 -07:00
Jeff King
f225987753 format_config: simplify buffer handling
When formatting a config value into a strbuf, we may end
up stringifying it into a fixed-size buffer using sprintf,
and then copying that buffer into the strbuf. We can
eliminate the middle-man (and drop some calls to sprintf!)
by writing directly to the strbuf.

The reason it was written this way in the first place is
that we need to know before writing the value whether to
insert a delimiter. Instead of delaying the write of the
value, we speculatively write the delimiter, and roll it
back in the single case that cares.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 13:16:50 -07:00
Jeff King
9f1429df17 format_config: don't init strbuf
It's unusual for a function which writes to a passed-in
strbuf to call strbuf_init; that will throw away anything
already there, leaking memory. In this case, there are
exactly two callers; one relies on this initialization and
the other passes in an already-initialized buffer.

There's no leak, as the initialized buffer doesn't have
anything in it. But let's bump the strbuf_init out to the
one caller who needs it, making format_config more
idiomatic.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 13:16:50 -07:00
SZEDER Gábor
ebca2d4957 config: restructure format_config() for better control flow
Commit 578625fa91 (config: add '--name-only' option to list only
variable names, 2015-08-10) modified format_config() such that it
returned from the middle of the function when showing only keys,
resulting in ugly code structure.

Reorganize the if statements and dealing with the key-value delimiter to
make the function easier to read.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 13:15:17 -07:00
Junio C Hamano
8b54c23437 ps_matched: xcalloc() takes nmemb and then element size
Even though multiplication is commutative, the order of arguments
should be xcalloc(nmemb, size).  ps_matched is an array of 1-byte
element whose size is the same as the number of pathspec elements.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-20 09:57:38 -07:00
Junio C Hamano
8c9155e031 Merge branch 'jk/git-path'
git_path() and mkpath() are handy helper functions but it is easy
to misuse, as the callers need to be careful to keep the number of
active results below 4.  Their uses have been reduced.

* jk/git-path:
  memoize common git-path "constant" files
  get_repo_path: refactor path-allocation
  find_hook: keep our own static buffer
  refs.c: remove_empty_directories can take a strbuf
  refs.c: avoid git_path assignment in lock_ref_sha1_basic
  refs.c: avoid repeated git_path calls in rename_tmp_log
  refs.c: simplify strbufs in reflog setup and writing
  path.c: drop git_path_submodule
  refs.c: remove extra git_path calls from read_loose_refs
  remote.c: drop extraneous local variable from migrate_file
  prefer mkpathdup to mkpath in assignments
  prefer git_pathdup to git_path in some possibly-dangerous cases
  add_to_alternates_file: don't add duplicate entries
  t5700: modernize style
  cache.h: complete set of git_path_submodule helpers
  cache.h: clarify documentation for git_path, et al
2015-08-19 14:48:56 -07:00
Junio C Hamano
51a22ce147 Merge branch 'jc/finalize-temp-file'
Long overdue micro clean-up.

* jc/finalize-temp-file:
  sha1_file.c: rename move_temp_to_file() to finalize_object_file()
2015-08-19 14:48:55 -07:00
Junio C Hamano
4bfab58ce2 Merge branch 'ps/guess-repo-name-at-root'
"git clone $URL", when cloning from a site whose sole purpose is to
host a single repository (hence, no path after <scheme>://<site>/),
tried to use the site name as the new repository name, but did not
remove username or password when <site> part was of the form
<user>@<pass>:<host>.  The code is taught to redact these.

* ps/guess-repo-name-at-root:
  clone: abort if no dir name could be guessed
  clone: do not use port number as dir name
  clone: do not include authentication data in guessed dir
2015-08-19 14:48:54 -07:00
Junio C Hamano
8259da5ea3 Merge branch 'jk/guess-repo-name-regression-fix'
"git clone $URL" in recent releases of Git contains a regression in
the code that invents a new repository name incorrectly based on
the $URL.  This has been corrected.

* jk/guess-repo-name-regression-fix:
  clone: use computed length in guess_dir_name
  clone: add tests for output directory
2015-08-19 14:48:54 -07:00
Junio C Hamano
223b55a577 Merge branch 'sb/remove-unused-var-from-builtin-add' into maint
* sb/remove-unused-var-from-builtin-add:
  add: remove dead code
2015-08-19 14:41:33 -07:00
Junio C Hamano
d3ac359841 Merge branch 'ib/scripted-parse-opt-better-hint-string' into maint
The "rev-parse --parseopt" mode parsed the option specification
and the argument hint in a strange way to allow '=' and other
special characters in the option name while forbidding them from
the argument hint.  This made it impossible to define an option
like "--pair <key>=<value>" with "pair=key=value" specification,
which instead would have defined a "--pair=key <value>" option.

* ib/scripted-parse-opt-better-hint-string:
  rev-parse --parseopt: allow [*=?!] in argument hints
2015-08-19 14:41:29 -07:00
Junio C Hamano
7e7ce32f7a Merge branch 'db/send-pack-user-signingkey' into maint
The low-level "git send-pack" did not honor 'user.signingkey'
configuration variable when sending a signed-push.

* db/send-pack-user-signingkey:
  builtin/send-pack.c: respect user.signingkey
2015-08-19 14:41:26 -07:00
Junio C Hamano
17850efa5f Merge branch 'jx/do-not-crash-receive-pack-wo-head' into maint
An attempt to delete a ref by pushing into a repositorywhose HEAD
symbolic reference points at an unborn branch that cannot be
created due to ref D/F conflict (e.g. refs/heads/a/b exists, HEAD
points at refs/heads/a) failed.

* jx/do-not-crash-receive-pack-wo-head:
  receive-pack: crash when checking with non-exist HEAD
2015-08-19 14:41:26 -07:00
Dave Borowitz
68c757f219 push: add a config option push.gpgSign for default signed pushes
Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 12:58:58 -07:00
Dave Borowitz
30261094b1 push: support signing pushes iff the server supports it
Add a new flag --sign=true (or --sign=false), which means the same
thing as the original --signed (or --no-signed).  Give it a third
value --sign=if-asked to tell push and send-pack to send a push
certificate if and only if the server advertised a push cert nonce.

If not, warn the user that their push may not be as secure as they
thought.

Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 12:58:45 -07:00
Dave Borowitz
068c77a518 builtin/send-pack.c: use parse_options API
The old option parsing code in this plumbing command predates this
API, so option parsing was done more manually. Using the new API
brings send-pack more in line with push, and accepts new variants
like --no-* for negating options.

Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 12:45:28 -07:00
Junio C Hamano
5a1ba6b48a Merge 'hv/submodule-config' to 'sb/submodule-helper'
* hv/submodule-config:
  submodule: allow erroneous values for the fetchRecurseSubmodules option
  submodule: use new config API for worktree configurations
  submodule: extract functions for config set and lookup
  submodule: implement a config API for lookup of .gitmodules values
2015-08-19 11:45:08 -07:00
Heiko Voigt
027771fcb1 submodule: allow erroneous values for the fetchRecurseSubmodules option
We should not die when reading the submodule config cache since the
user might not be able to get out of that situation when the
configuration is part of the history.

We should handle this condition later when the value is about to be
used.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 11:43:10 -07:00
Heiko Voigt
851e18c385 submodule: use new config API for worktree configurations
We remove the extracted functions and directly parse into and read out
of the cache. This allows us to have one unified way of accessing
submodule configuration values specific to single submodules. Regardless
whether we need to access a configuration from history or from the
worktree.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 11:43:10 -07:00
Paul Tan
3ecc7040ef am --skip/--abort: merge HEAD/ORIG_HEAD tree into index
After running "git am --abort", and then running "git reset --hard",
files that were not modified would still be re-checked out.

This is because clean_index() in builtin/am.c mistakenly called the
read_tree() function, which overwrites all entries in the index,
including the stat info.

"git am --skip" did not seem to have this issue because am_skip() called
am_run(), which called refresh_cache() to update the stat info. However,
there's still a performance penalty as the lack of stat info meant that
refresh_cache() would have to scan all files for changes.

Fix this by using unpack_trees() instead to merge the tree into the
index, so that the stat info from the index is kept.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-19 10:51:39 -07:00
Jacob Keller
4f655e22b7 notes: teach git-notes about notes.<name>.mergeStrategy option
Teach notes about a new "notes.<name>.mergeStrategy" option for
configuring the notes merge strategy when merging into
refs/notes/<name>. This option allows for the selection of merge
strategy for particular notes refs, rather than all notes ref merges, as
user may not want cat_sort_uniq for all refs, but only some. Note that
the <name> is the local reference we are merging into, not the remote
ref we merged from. The assumption is that users will mostly want to
configure separate local ref merge strategies rather than strategies
depending on which remote ref they merge from.

notes.<name>.mergeStrategy overrides the general behavior as it is more
specific.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-17 15:39:13 -07:00
Jacob Keller
d2d68d9975 notes: add notes.mergeStrategy option to select default strategy
Teach git-notes about "notes.mergeStrategy" to select a general strategy
for all notes merges. This enables a user to always get expected merge
strategy such as "cat_sort_uniq" without having to pass the "-s" option
manually.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-17 15:38:54 -07:00
Jacob Keller
93efcad317 notes: extract parse_notes_merge_strategy to notes-utils
Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-17 15:38:32 -07:00
Junio C Hamano
66873d4065 Merge branch 'mh/get-remote-group-fix'
An off-by-one error made "git remote" to mishandle a remote with a
single letter nickname.

* mh/get-remote-group-fix:
  get_remote_group(): use skip_prefix()
  get_remote_group(): eliminate superfluous call to strcspn()
  get_remote_group(): rename local variable "space" to "wordlen"
  get_remote_group(): handle remotes with single-character names
2015-08-17 15:07:51 -07:00
Junio C Hamano
e69b408280 Merge branch 'kd/pull-rebase-autostash'
"git pull --rebase" has been taught to pay attention to
rebase.autostash configuration.

* kd/pull-rebase-autostash:
  pull: allow dirty tree when rebase.autostash enabled
2015-08-17 15:07:50 -07:00
Junio C Hamano
0a489b0680 prepare_packed_git(): refactor garbage reporting in pack directory
The hook to report "garbage" files in $GIT_OBJECT_DIRECTORY/pack/
could be generic but is too specific to count-object's needs.

Move the part to produce human-readable messages to count-objects,
and refine the interface to callback with the "bits" with values
defined in the cache.h header file, so that other callers (e.g.
prune) can later use the same mechanism to enumerate different
kinds of garbage files and do something intelligent about them,
other than reporting in textual messages.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-17 09:14:59 -07:00
Michael Haggerty
ebebeaea0a gc: use tempfile module to handle gc.pid file
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-12 14:50:11 -07:00
Michael Haggerty
00539cef39 lock_repo_for_gc(): compute the path to "gc.pid" only once
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-12 14:50:11 -07:00
Junio C Hamano
fde61a0f72 Merge branch 'sb/remove-unused-var-from-builtin-add'
* sb/remove-unused-var-from-builtin-add:
  add: remove dead code
2015-08-12 14:09:58 -07:00
Junio C Hamano
53860f0392 Merge branch 'es/worktree-add-cleanup'
The "new-worktree-mode" hack in "checkout" that was added in
nd/multiple-work-trees topic has been removed by updating the
implementation of new "worktree add".

* es/worktree-add-cleanup: (25 commits)
  Documentation/git-worktree: fix duplicated 'from'
  Documentation/config: mention "now" and "never" for 'expire' settings
  Documentation/git-worktree: fix broken 'linkgit' invocation
  checkout: drop intimate knowledge of newly created worktree
  worktree: populate via "git reset --hard" rather than "git checkout"
  worktree: avoid resolving HEAD unnecessarily
  worktree: make setup of new HEAD distinct from worktree population
  worktree: detect branch-name/detached and error conditions locally
  worktree: add_worktree: construct worktree-population command locally
  worktree: elucidate environment variables intended for child processes
  worktree: make branch creation distinct from worktree population
  worktree: add: suppress auto-vivication with --detach and no <branch>
  worktree: make --detach mutually exclusive with -b/-B
  worktree: introduce options container
  worktree: simplify new branch (-b/-B) option checking
  worktree: improve worktree setup message
  branch: publish die_if_checked_out()
  checkout: teach check_linked_checkout() about symbolic link HEAD
  checkout: check_linked_checkout: simplify symref parsing
  checkout: check_linked_checkout: improve "already checked out" aesthetic
  ...
2015-08-12 14:09:56 -07:00
Junio C Hamano
7aa2da6162 Merge branch 'pt/am-builtin'
Rewrite "am" in "C".

* pt/am-builtin: (46 commits)
  git-am: add am.threeWay config variable
  builtin-am: remove redirection to git-am.sh
  builtin-am: check for valid committer ident
  builtin-am: implement legacy -b/--binary option
  builtin-am: implement -i/--interactive
  builtin-am: support and auto-detect mercurial patches
  builtin-am: support and auto-detect StGit series files
  builtin-am: support and auto-detect StGit patches
  builtin-am: rerere support
  builtin-am: invoke post-applypatch hook
  builtin-am: invoke pre-applypatch hook
  builtin-am: invoke applypatch-msg hook
  builtin-am: support automatic notes copying
  builtin-am: invoke post-rewrite hook
  builtin-am: implement -S/--gpg-sign, commit.gpgsign
  builtin-am: implement --committer-date-is-author-date
  builtin-am: implement --ignore-date
  builtin-am: pass git-apply's options to git-apply
  builtin-am: implement --[no-]scissors
  builtin-am: support --keep-cr, am.keepcr
  ...
2015-08-12 14:09:55 -07:00
Junio C Hamano
c1e5ca90db Merge branch 'es/worktree-add'
Remove remaining cruft from  "git checkout --to", which
transitioned to "git worktree add".

* es/worktree-add:
  config: rename "gc.pruneWorktreesExpire" to "gc.worktreePruneExpire"
  Documentation/git-worktree: wordsmith worktree-related manpages
  Documentation/config: fix stale "git prune --worktree" reference
  Documentation/git-worktree: fix incorrect reference to file "locked"
  Documentation/git-worktree: consistently use term "linked working tree"
2015-08-12 14:09:55 -07:00
Paul Tan
b5e823594c am: let --signoff override --no-signoff
After resolving a conflicting patch, a user may wish to sign off the
patch to declare that the patch has been modified. As such, the user
will expect that running "git am --signoff --continue" will append the
signoff to the commit message.

However, the --signoff option is only taken into account during the
mail-parsing stage. If the --signoff option is set, then the signoff
will be appended to the commit message. Since the mail-parsing stage
comes before the patch application stage, the --signoff option, if
provided on the command-line when resuming, will have no effect at all.

We cannot move the append_signoff() call to the patch application stage
as the applypatch-msg hook and interactive mode, which run before patch
application, may expect the signoff to be there.

Fix this by taking note if the user explictly set the --signoff option
on the command-line, and append the signoff to the commit message when
resuming if so.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-12 10:33:47 -07:00
Paul Tan
852a171018 am: let command-line options override saved options
When resuming, git-am mistakenly ignores command-line options.

For instance, when a patch fails to apply with "git am patch",
subsequently running "git am --3way" would not cause git-am to fall
back on attempting a threeway merge.  This occurs because by default
the --3way option is saved as "false", and the saved am options are
loaded after the command-line options are parsed, thus overwriting
the command-line options when resuming.

Fix this by moving the am_load() function call before parse_options(),
so that command-line options will override the saved am options.

The purpose of supporting this use case is to enable users to "wiggle"
that one conflicting patch. As such, it is expected that the
command-line options do not affect subsequent applied patches. Implement
this by calling am_load() once we apply the conflicting patch
successfully.

Noticed-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-12 10:33:47 -07:00
David Turner
b02e8595e2 notes: handle multiple worktrees
Before creating NOTES_MERGE_REF, check NOTES_MERGE_REF using
find_shared_symref and die if we find one.  This prevents simultaneous
merges to the same notes branch from different worktrees.

Signed-off-by: David Turner <dturner@twopensource.com>
Reviewed-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-11 13:52:27 -07:00
Jeff King
f932729cc7 memoize common git-path "constant" files
One of the most common uses of git_path() is to pass a
constant, like git_path("MERGE_MSG"). This has two
drawbacks:

  1. The return value is a static buffer, and the lifetime
     is dependent on other calls to git_path, etc.

  2. There's no compile-time checking of the pathname. This
     is OK for a one-off (after all, we have to spell it
     correctly at least once), but many of these constant
     strings appear throughout the code.

This patch introduces a series of functions to "memoize"
these strings, which are essentially globals for the
lifetime of the program. We compute the value once, take
ownership of the buffer, and return the cached value for
subsequent calls.  cache.h provides a helper macro for
defining these functions as one-liners, and defines a few
common ones for global use.

Using a macro is a little bit gross, but it does nicely
document the purpose of the functions. If we need to touch
them all later (e.g., because we learned how to change the
git_dir variable at runtime, and need to invalidate all of
the stored values), it will be much easier to have the
complete list.

Note that the shared-global functions have separate, manual
declarations. We could do something clever with the macros
(e.g., expand it to a declaration in some places, and a
declaration _and_ a definition in path.c). But there aren't
that many, and it's probably better to stay away from
too-magical macros.

Likewise, if we abandon the C preprocessor in favor of
generating these with a script, we could get much fancier.
E.g., normalizing "FOO/BAR-BAZ" into "git_path_foo_bar_baz".
But the small amount of saved typing is probably not worth
the resulting confusion to readers who want to grep for the
function's definition.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 15:37:14 -07:00
Jeff King
0ea68e4296 get_repo_path: refactor path-allocation
The get_repo_path function calls mkpath() and then does some
non-trivial operations on it, like calling
is_git_directory() and read_gitfile(). These are actually
OK (they do not use more pathname static buffers
themselves), but it takes a fair bit of work to verify.

Let's use our own strbuf to store the path, and we can
simply reuse it for each iteration of the loop (we can even
avoid rewriting the beginning part, since we are trying a
series of suffixes).

To make the strbuf cleanup easier, we split out a thin
wrapper. As a bonus, this wrapper can factor out the
canonicalization that happens in all of the early-return
code paths.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 15:37:14 -07:00
Jeff King
b21a5d6605 remote.c: drop extraneous local variable from migrate_file
It's an anti-pattern to assign the result of git_path to a
variable, since other calls may reuse our buffer. In this
case, we feed the result to unlink_or_warn immediately
afterwards, so it's OK. However, it's nice to avoid
assignment entirely, which makes it more obvious that
there's no bug.

We can just pass the result directly to unlink_or_warn,
which is a known-simple function. As a bonus, the code flow
is a little more obvious, as we eliminate an extra
conditional (a reader does not have to wonder any more
"under which circumstances is 'path' set?").

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 15:37:12 -07:00
Jeff King
e3cf230324 prefer mkpathdup to mkpath in assignments
As with the previous commit to git_path, assigning the
result of mkpath is suspicious, since it is not clear
whether we will still depend on the value after it may have
been overwritten by subsequent calls. This patch converts
low-hanging fruit to use mkpathdup instead of mkpath (with
the downside that we must remember to free the result).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 15:37:12 -07:00
Jeff King
fcd12db6af prefer git_pathdup to git_path in some possibly-dangerous cases
Because git_path uses a static buffer that is shared with
calls to git_path, mkpath, etc, it can be dangerous to
assign the result to a variable or pass it to a non-trivial
function. The value may change unexpectedly due to other
calls.

None of the cases changed here has a known bug, but they're
worth converting away from git_path because:

  1. It's easy to use git_pathdup in these cases.

  2. They use constructs (like assignment) that make it
     hard to tell whether they're safe or not.

The extra malloc overhead should be trivial, as an
allocation should be an order of magnitude cheaper than a
system call (which we are clearly about to make, since we
are constructing a filename). The real cost is that we must
remember to free the result.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 15:37:12 -07:00
Michael Haggerty
b4fb09e4da lockfile: add accessor get_lock_file_path()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 12:57:14 -07:00
Junio C Hamano
cb5add5868 sha1_file.c: rename move_temp_to_file() to finalize_object_file()
Since 5a688fe4 ("core.sharedrepository = 0mode" should set, not
loosen, 2009-03-25), we kept reminding ourselves:

    NEEDSWORK: this should be renamed to finalize_temp_file() as
    "moving" is only a part of what it does, when no patch between
    master to pu changes the call sites of this function.

without doing anything about it.  Let's do so.

The purpose of this function was not to move but to finalize.  The
detail of the primarily implementation of finalizing was to link the
temporary file to its final name and then to unlink, which wasn't
even "moving".  The alternative implementation did "move" by calling
rename(2), which is a fun tangent.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 11:10:37 -07:00
Patrick Steinhardt
adef9561f0 clone: abort if no dir name could be guessed
Due to various components of the URI being stripped off it may
happen that we fail to guess a directory name. We currently error
out with a message that it is impossible to create the working
tree '' in such cases. Instead, error out early with a sensible
error message hinting that a directory name should be specified
manually on the command line.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 11:02:11 -07:00
Patrick Steinhardt
92722efec0 clone: do not use port number as dir name
If the URI contains a port number and the URI's path component is
empty we fail to guess a sensible directory name. E.g. cloning a
repository 'ssh://example.com:2222/' we guess a directory name
'2222' where we would want the hostname only, e.g. 'example.com'.

We need to take care to not drop trailing port-like numbers in
certain cases. E.g. when cloning a repository 'foo/bar:2222.git'
we want to guess the directory name '2222' instead of 'bar'.
Thus, we have to first check the stripped URI for path separators
and only strip port numbers if there are path separators present.
This heuristic breaks when cloning a repository 'bar:2222.git',
though.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 11:02:07 -07:00
Patrick Steinhardt
e895986727 clone: do not include authentication data in guessed dir
If the URI contains authentication data and the URI's path
component is empty, we fail to guess a sensible directory name.
E.g. cloning a repository 'ssh://user:password@example.com/' we
guess a directory name 'password@example.com' where we would want
the hostname only, e.g. 'example.com'.

The naive way of just adding '@' as a path separator would break
cloning repositories like 'foo/bar@baz.git' (which would
currently become 'bar@baz' but would then become 'baz' only).
Instead fix this by first dropping the scheme and then greedily
scanning for an '@' sign until we find the first path separator.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 11:01:08 -07:00
Jeff King
db2e220447 clone: use computed length in guess_dir_name
Commit 7e837c6 (clone: simplify string handling in
guess_dir_name(), 2015-07-09) changed clone to use
strip_suffix instead of hand-rolled pointer manipulation.
However, strip_suffix will strip from the end of a
NUL-terminated string, and we may have already stripped some
characters (like directory separators, or "/.git"). This
leads to commands like:

  git clone host:foo.git/

failing to strip the ".git".

We must instead convert our pointer arithmetic into a
computed length and feed that to strip_suffix_mem, which will
then reduce the length further for us.

It would be nicer if we could drop the pointer manipulation
entirely, and just continually strip using strip_suffix. But
that doesn't quite work for two reasons:

  1. The early suffixes we're stripping are not constant; we
     need to look for is_dir_sep, which could be one of
     several characters.

  2. Mid-way through the stripping we compute the pointer
     "start", which shows us the beginning of the pathname.
     Which really give us two lengths to work with: the
     offset from the start of the string, and from the start
     of the path. By using pointers for the early part, we
     can just compute the length from "start" when we need
     it.

Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 11:01:05 -07:00
SZEDER Gábor
578625fa91 config: add '--name-only' option to list only variable names
'git config' can only show values or name-value pairs, so if a shell
script needs the names of set config variables it has to run 'git config
--list' or '--get-regexp' and parse the output to separate config
variable names from their values.  However, such a parsing can't cope
with multi-line values.  Though 'git config' can produce null-terminated
output for newline-safe parsing, that's of no use in such a case, becase
shells can't cope with null characters.

Even our own bash completion script suffers from these issues.

Help the completion script, and shell scripts in general, by introducing
the '--name-only' option to modify the output of '--list' and
'--get-regexp' to list only the names of config variables, so they don't
have to perform error-prone post processing to separate variable names
from their values anymore.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-10 10:33:58 -07:00
Remi Lespinet
e97a5e765d git-am: add am.threeWay config variable
Add the am.threeWay configuration variable to use the -3 or --3way
option of git am by default. When am.threeway is set and not desired
for a specific git am command, the --no-3way option can be used to
override it.

Signed-off-by: Remi Lespinet <remi.lespinet@ensimag.grenoble-inp.fr>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
783d7e865e builtin-am: remove redirection to git-am.sh
At the beginning of the rewrite of git-am.sh to C, in order to not break
existing test scripts that depended on a functional git-am, a
redirection to git-am.sh was introduced that would activate if the
environment variable _GIT_USE_BUILTIN_AM was not defined.

Now that all of git-am.sh's functionality has been re-implemented in
builtin/am.c, remove this redirection, and retire git-am.sh into
contrib/examples/.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
5e4f9cff3c builtin-am: check for valid committer ident
When commit_tree() is called, if the user does not have an explicit
committer ident configured, it will attempt to construct a default
committer ident based on the user's and system's info (e.g. gecos field,
hostname etc.) However, if a default committer ident is unable to be
constructed, commit_tree() will die(), but at this point of git-am's
execution, there will already be changes made to the index and work
tree.

This can be confusing to new users, and as such since d64e6b0 (Keep
Porcelainish from failing by broken ident after making changes.,
2006-02-18) git-am.sh will check to see if the committer ident has been
configured, or a default one can be constructed, before even starting to
apply patches.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
c2676cde9f builtin-am: implement legacy -b/--binary option
The -b/--binary option was initially implemented in 087b674 (git-am:
--binary; document --resume and --binary., 2005-11-16). The option will
pass the --binary flag to git-apply to allow it to apply binary patches.

However, in 2b6eef9 (Make apply --binary a no-op., 2006-09-06), --binary
was been made a no-op in git-apply. Following that, since cb3a160
(git-am: ignore --binary option, 2008-08-09), the --binary option in
git-am is ignored as well.

In 6c15a1c (am: officially deprecate -b/--binary option, 2012-03-13),
the --binary option was tweaked to its present behavior: when set, the
message:

	The -b/--binary option has been a no-op for long time, and it
	will be removed. Please do not use it anymore.

will be printed.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
7ff2683253 builtin-am: implement -i/--interactive
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh supported the --interactive mode. After parsing the patch mail
and extracting the patch, commit message and authorship info, an
interactive session will begin that allows the user to choose between:

* applying the patch

* applying the patch and all subsequent patches (by disabling
  interactive mode in subsequent patches)

* skipping the patch

* editing the commit message

Since f89ad67 (Add [v]iew patch in git-am interactive., 2005-10-25),
git-am.sh --interactive also supported viewing the patch to be applied.

When --resolved-ing in --interactive mode, we need to take care to
update the patch with the contents of the index, such that the correct
patch will be displayed when the patch is viewed in interactive mode.

Re-implement the above in builtin/am.c

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
94cd175cff builtin-am: support and auto-detect mercurial patches
Since 0cfd112 (am: preliminary support for hg patches, 2011-08-29),
git-am.sh could convert mercurial patches to an RFC2822 mail patch
suitable for parsing with git-mailinfo, and queue them in the state
directory for application.

Since 15ced75 (git-am foreign patch support: autodetect some patch
formats, 2009-05-27), git-am.sh was able to auto-detect mercurial
patches by checking if the file begins with the line:

	# HG changeset patch

Re-implement the above in builtin/am.c.

Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
336108c156 builtin-am: support and auto-detect StGit series files
Since c574e68 (git-am foreign patch support: StGIT support, 2009-05-27),
git-am.sh is able to read a single StGit series file and, for each StGit
patch listed in the file, convert the StGit patch into a RFC2822 mail
patch suitable for parsing with git-mailinfo, and queue them in the
state directory for applying.

Since 15ced75 (git-am foreign patch support: autodetect some patch
formats, 2009-05-27), git-am.sh is able to auto-detect StGit series
files by checking to see if the file starts with the string:

	# This series applies on GIT commit

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
5ae41c79b8 builtin-am: support and auto-detect StGit patches
Since c574e68 (git-am foreign patch support: StGIT support, 2009-05-27),
git-am.sh supported converting StGit patches into RFC2822 mail patches
that can be parsed with git-mailinfo.

Implement this by introducing two functions in builtin/am.c:
stgit_patch_to_mail() and split_mail_conv().

stgit_patch_to_mail() is a callback function for split_mail_conv(), and
contains the logic for converting an StGit patch into an RFC2822 mail
patch.

split_mail_conv() implements the logic to go through each file in the
`paths` list, reading from stdin where specified, and calls the callback
function to write the converted patch to the corresponding output file
in the state directory. This interface should be generic enough to
support other foreign patch formats in the future.

Since 15ced75 (git-am foreign patch support: autodetect some patch
formats, 2009-05-27), git-am.sh is able to auto-detect StGit patches.
Re-implement this in builtin/am.c.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
f1cb96d687 builtin-am: rerere support
git-am.sh will call git-rerere at the following events:

* "git rerere" when a three-way merge fails to record the conflicted
  automerge results. Since 8389b52 (git-rerere: reuse recorded resolve.,
  2006-01-28)

  * Since cb6020b (Teach --[no-]rerere-autoupdate option to merge,
    revert and friends, 2009-12-04), git-am.sh supports the
    --[no-]rerere-autoupdate option as well, and would pass it to
    git-rerere.

* "git rerere" when --resolved, to record the hand resolution. Since
  f131dd4 (rerere: record (or avoid misrecording) resolved, skipped or
  aborted rebase/am, 2006-12-08)

* "git rerere clear" when --skip-ing. Since f131dd4 (rerere: record (or
  avoid misrecording) resolved, skipped or aborted rebase/am,
  2006-12-08)

* "git rerere clear" when --abort-ing. Since 3e5057a (git am --abort,
  2008-07-16)

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
7088f8078a builtin-am: invoke post-applypatch hook
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh will invoke the post-applypatch hook after the patch is
applied and a commit is made. The exit code of the hook is ignored.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
6c24c5c0a5 builtin-am: invoke pre-applypatch hook
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sg will invoke the pre-applypatch hook after applying the patch
to the index, but before a commit is made. Should the hook exit with a
non-zero status, git am will exit.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
b8803d8f8c builtin-am: invoke applypatch-msg hook
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh will invoke the applypatch-msg hooks just after extracting the
patch message. If the applypatch-msg hook exits with a non-zero status,
git-am.sh abort before even applying the patch to the index.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
88b291fe9d builtin-am: support automatic notes copying
Since eb2151b (rebase: support automatic notes copying, 2010-03-12),
git-am.sh supported automatic notes copying in --rebasing mode by
invoking "git notes copy" once it has finished applying all the patches.

Re-implement this feature in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
13b97ea5f0 builtin-am: invoke post-rewrite hook
Since 96e1948 (rebase: invoke post-rewrite hook, 2010-03-12), git-am.sh
will invoke the post-rewrite hook after it successfully finishes
applying all the queued patches.

To do this, when parsing a mail to extract its patch and metadata, in
--rebasing mode git-am.sh will also store the original commit ID in the
$state_dir/original-commit file. Once it applies and commits the patch,
the original commit ID, and the new commit ID, will be appended to the
$state_dir/rewritten file.

Once all of the queued mail have been processed, git-am.sh will then
invoke the post-rewrite hook with the contents of the
$state_dir/rewritten file.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
7e35dacbe3 builtin-am: implement -S/--gpg-sign, commit.gpgsign
Since 3b4e395 (am: add the --gpg-sign option, 2014-02-01), git-am.sh
supported the --gpg-sign option, and would pass it to git-commit-tree,
thus GPG-signing the commit object.

Re-implement this option in builtin/am.c.

git-commit-tree would also sign the commit by default if the
commit.gpgsign setting is true. Since we do not run commit-tree, we
re-implement this behavior by handling the commit.gpgsign setting
ourselves.

Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
0cd4bcba67 builtin-am: implement --committer-date-is-author-date
Since 3f01ad6 (am: Add --committer-date-is-author-date option,
2009-01-22), git-am.sh implemented the --committer-date-is-author-date
option, which tells git-am to use the timestamp recorded in the email
message as both author and committer date.

Re-implement this option in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
f07adb62f2 builtin-am: implement --ignore-date
Since a79ec62 (git-am: Add --ignore-date option, 2009-01-24), git-am.sh
supported the --ignore-date option, and would use the current timestamp
instead of the one provided in the patch if the option was set.

Re-implement this option in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
257e8cecc1 builtin-am: pass git-apply's options to git-apply
git-am.sh recognizes some of git-apply's options, and would pass them to
git-apply:

* --whitespace, since 8c31cb8 (git-am: --whitespace=x option.,
  2006-02-28)

* -C, since 67dad68 (add -C[NUM] to git-am, 2007-02-08)

* -p, since 2092a1f (Teach git-am to pass -p option down to git-apply,
  2007-02-11)

* --directory, since b47dfe9 (git-am: add --directory=<dir> option,
  2009-01-11)

* --reject, since b80da42 (git-am: implement --reject option passed to
  git-apply, 2009-01-23)

* --ignore-space-change, --ignore-whitespace, since 86c91f9 (git apply:
  option to ignore whitespace differences, 2009-08-04)

* --exclude, since 77e9e49 (am: pass exclude down to apply, 2011-08-03)

* --include, since 58725ef (am: support --include option, 2012-03-28)

* --reject, since b80da42 (git-am: implement --reject option passed to
  git-apply, 2009-01-23)

Re-implement support for these options in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
9b646617b8 builtin-am: implement --[no-]scissors
Since 017678b (am/mailinfo: Disable scissors processing by default,
2009-08-26), git-am supported the --[no-]scissors option, passing it to
git-mailinfo.

Re-implement support for this option in builtin/am.c.

Since the default setting of --scissors in git-mailinfo can be
configured with mailinfo.scissors (and perhaps through other settings in
the future), to be safe we make an explicit distinction between
SCISSORS_UNSET, SCISSORS_TRUE and SCISSORS_FALSE.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
5d123a4017 builtin-am: support --keep-cr, am.keepcr
Since ad2c928 (git-am: Add command line parameter `--keep-cr` passing it
to git-mailsplit, 2010-02-27), git-am.sh supported the --keep-cr option
and would pass it to git-mailsplit.

Since e80d4cb (git-am: Add am.keepcr and --no-keep-cr to override it,
2010-02-27), git-am.sh supported the am.keepcr config setting, which
controls whether --keep-cr is on by default.

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
702cbaad61 builtin-am: implement --[no-]message-id, am.messageid
Since a078f73 (git-am: add --message-id/--no-message-id, 2014-11-25),
git-am.sh supported the --[no-]message-id options, and the
"am.messageid" setting which specifies the default option.

--[no-]message-id tells git-am whether or not the -m option should be
passed to git-mailinfo.

Re-implement this option in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
4f1b696175 builtin-am: implement -k/--keep, --keep-non-patch
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh supported the -k/--keep option to pass the -k option to
git-mailsplit.

Since f7e5ea1 (am: learn passing -b to mailinfo, 2012-01-16), git-am.sh
supported the --keep-non-patch option to pass the -b option to
git-mailsplit.

Re-implement these two options in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
ef7ee16d75 builtin-am: implement -u/--utf8
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh supported the -u,--utf8 option. If set, the -u option will be
passed to git-mailinfo to re-code the commit log message and authorship
in the charset specified by i18n.commitencoding. If unset, the -n option
will be passed to git-mailinfo, which disables the re-encoding.

Since d84029b (--utf8 is now default for 'git-am', 2007-01-08), --utf8
is specified by default in git-am.sh.

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
6d42ac2941 builtin-am: handle stray state directory
Should git-am terminate unexpectedly between the point where the state
directory is created, but the "next" and "last" files are not written
yet, a stray state directory will be left behind.

As such, since b141f3c (am: handle stray $dotest directory, 2013-06-15),
git-am.sh explicitly recognizes such a stray directory, and allows the
user to remove it with am --abort.

Re-implement this feature in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
df2760a576 builtin-am: bypass git-mailinfo when --rebasing
Since 5e835ca (rebase: do not munge commit log message, 2008-04-16),
git am --rebasing no longer gets the commit log message from the patch,
but reads it directly from the commit identified by the "From " header
line.

Since 43c2325 (am: use get_author_ident_from_commit instead of mailinfo
when rebasing, 2010-06-16), git am --rebasing also gets the author name,
email and date directly from the commit.

Since 0fbb95d (am: don't call mailinfo if $rebasing, 2012-06-26), git am
--rebasing does not use git-mailinfo to get the patch body, but rather
generates it directly from the commit itself.

The above 3 commits introduced a separate parse_mail() code path in
git-am.sh's --rebasing mode that bypasses git-mailinfo. Re-implement
this code path in builtin/am.c as parse_mail_rebase().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
35bdcc59f6 builtin-am: implement --rebasing mode
Since 3041c32 (am: --rebasing, 2008-03-04), git-am.sh supported the
--rebasing option, which is used internally by git-rebase to tell git-am
that it is being used for its purpose. It would create the empty file
$state_dir/rebasing to help "completion" scripts tell if the ongoing
operation is am or rebase.

As of 0fbb95d (am: don't call mailinfo if $rebasing, 2012-06-26),
--rebasing also implies --3way as well.

Since a1549e1 (am: return control to caller, for housekeeping,
2013-05-12), git-am.sh would only clean up the state directory when it
is not --rebasing, instead deferring cleanup to git-rebase.sh.

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
84f3de28ba builtin-am: implement --3way
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07),
git-am.sh supported the --3way option, and if set, would attempt to do a
3-way merge if the initial patch application fails.

Since 5d86861 (am -3: list the paths that needed 3-way fallback,
2012-03-28), in a 3-way merge git-am.sh would list the paths that needed
3-way fallback, so that the user can review them more carefully to spot
mismerges.

Re-implement the above in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
eb898b83f2 builtin-am: implement -s/--signoff
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07), git-am
supported the --signoff option which will append a signoff at the end of
the commit messsage. Re-implement this feature in parse_mail() by
calling append_signoff() if the option is set.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
2d83109aab builtin-am: exit with user friendly message on failure
Since ced9456 (Give the user a hint for how to continue in the case that
git-am fails because it requires user intervention, 2006-05-02), git-am
prints additional information on how the user can re-invoke git-am to
resume patch application after resolving the failure. Re-implement this
through the die_user_resolve() function.

Since cc12005 (Make git rebase interactive help match documentation.,
2006-05-13), git-am supports the --resolvemsg option which is used by
git-rebase to override the message printed out when git-am fails.
Re-implement this option.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
5d28cf7819 builtin-am: implement -q/--quiet
Since 0e987a1 (am, rebase: teach quiet option, 2009-06-16), git-am
supported the --quiet option, and when told to be quiet, would only
speak on failure. Re-implement this by introducing the say() function,
which works like fprintf_ln(), but would only write to the stream when
state->quiet is false.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
8d18550318 builtin-am: reject patches when there's a session in progress
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07), git-am
would error out if the user gave it mbox(s) on the command-line, but
there was a session in progress.

Since c95b138 (Fix git-am safety checks, 2006-09-15), git-am would
detect if the user attempted to feed it a mbox via stdin, by checking if
stdin is not a tty and there is no resume command given.

Re-implement the above two safety checks.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
33388a71d2 builtin-am: implement --abort
Since 3e5057a (git am --abort, 2008-07-16), git-am supported the --abort
option that will rewind HEAD back to the original commit. Re-implement
this through am_abort().

Since 7b3b7e3 (am --abort: keep unrelated commits since the last failure
and warn, 2010-12-21), to prevent commits made since the last failure
from being lost, git-am will not rewind HEAD back to the original
commit if HEAD moved since the last failure. Re-implement this through
safe_to_abort().

Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
9990080c9d builtin-am: implement --skip
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07), git-am
supported resuming from a failed patch application by skipping the
current patch. Re-implement this feature by introducing am_skip().

Helped-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
8c7b1563ee builtin-am: don't parse mail when resuming
Since 271440e (git-am: make it easier after fixing up an unapplicable
patch., 2005-10-25), when "git am" is run again after being paused, the
current mail message will not be re-parsed, but instead the contents of
the state directory's patch, msg and author-script files will be used
as-is instead.

Re-implement this in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
240bfd2de9 builtin-am: implement --resolved/--continue
Since 0c15cc9 (git-am: --resolved., 2005-11-16), git-am supported
resuming from a failed patch application. The user will manually apply
the patch, and the run git am --resolved which will then commit the
resulting index. Re-implement this feature by introducing am_resolve().

Since it makes no sense for the user to run am --resolved when there is
no session in progress, we error out in this case.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
32a5fcbfe9 builtin-am: refuse to apply patches if index is dirty
Since d1c5f2a (Add git-am, applymbox replacement., 2005-10-07), git-am
will refuse to apply patches if the index is dirty. Re-implement this
behavior in builtin/am.c.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
c9e8d960b6 builtin-am: implement committing applied patch
Implement do_commit(), which commits the index which contains the
results of applying the patch, along with the extracted commit message
and authorship information.

Since 29b6754 (am: remove rebase-apply directory before gc, 2010-02-22),
git gc --auto is also invoked to pack the loose objects that are created
from making the commits.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
38a824fe05 builtin-am: apply patch with git-apply
Implement applying the patch to the index using git-apply.

If a file is unchanged but stat-dirty, git-apply may erroneously fail to
apply patches, thinking that they conflict with a dirty working tree.

As such, since 2a6f08a (am: refresh the index at start and --resolved,
2011-08-15), git-am will refresh the index before applying patches.
Re-implement this behavior.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
3e20dcf367 builtin-am: extract patch and commit info with git-mailinfo
For the purpose of applying the patch and committing the results,
implement extracting the patch data, commit message and authorship from
an e-mail message using git-mailinfo.

git-mailinfo is run as a separate process, but ideally in the future,
we should be be able to access its functionality directly without
spawning a new process.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Jeff King <peff@peff.net>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
c29807b27d builtin-am: auto-detect mbox patches
Since 15ced75 (git-am foreign patch support: autodetect some patch
formats, 2009-05-27), git-am.sh is able to autodetect mbox, stgit and
mercurial patches through heuristics.

Re-implement support for autodetecting mbox/maildir files in
builtin/am.c.

RFC 2822 requires that lines are terminated by "\r\n". To support this,
implement strbuf_getline_crlf(), which will remove both '\n' and "\r\n"
from the end of the line.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
11c2177f2c builtin-am: split out mbox/maildir patches with git-mailsplit
git-am.sh supports mbox, stgit and mercurial patches. Re-implement
support for splitting out mbox/maildirs using git-mailsplit, while also
implementing the framework required to support other patch formats in
the future.

Re-implement support for the --patch-format option (since a5a6755
(git-am foreign patch support: introduce patch_format, 2009-05-27)) to
allow the user to choose between the different patch formats.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
8c3bd9e288 builtin-am: implement patch queue mechanism
git-am applies a series of patches. If the process terminates
abnormally, we want to be able to resume applying the series of patches.
This requires the session state to be saved in a persistent location.

Implement the mechanism of a "patch queue", represented by 2 integers --
the index of the current patch we are applying and the index of the last
patch, as well as its lifecycle through the following functions:

* am_setup(), which will set up the state directory
  $GIT_DIR/rebase-apply. As such, even if the process exits abnormally,
  the last-known state will still persist.

* am_load(), which is called if there is an am session in
  progress, to load the last known state from the state directory so we
  can resume applying patches.

* am_run(), which will do the actual patch application. After applying a
  patch, it calls am_next() to increment the current patch index. The
  logic for applying and committing a patch is not implemented yet.

* am_destroy(), which is finally called when we successfully applied all
  the patches in the queue, to clean up by removing the state directory
  and its contents.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Stefan Beller <sbeller@google.com>
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Paul Tan
73c2779f42 builtin-am: implement skeletal builtin am
For the purpose of rewriting git-am.sh into a C builtin, implement a
skeletal builtin/am.c that redirects to $GIT_EXEC_PATH/git-am if the
environment variable _GIT_USE_BUILTIN_AM is not defined. Since in the
Makefile git-am.sh takes precedence over builtin/am.c,
$GIT_EXEC_PATH/git-am will contain the shell script git-am.sh, and thus
this allows us to fall back on the functional git-am.sh when running the
test suite for tests that depend on a working git-am implementation.

Since git-am.sh cannot handle any environment modifications by
setup_git_directory(), "am" is declared with no setup flags in git.c. On
the other hand, to re-implement git-am.sh in builtin/am.c, we need to
run all the git dir and work tree setup logic that git.c typically does
for us. As such, we work around this temporarily by copying the logic in
git.c's run_builtin(), which is roughly:

	prefix = setup_git_directory();
	trace_repo_setup(prefix);
	setup_work_tree();

This redirection should be removed when all the features of git-am.sh
have been re-implemented in builtin/am.c.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-04 22:02:11 -07:00
Junio C Hamano
0baebca51e Merge branch 'jx/do-not-crash-receive-pack-wo-head'
An attempt to delete a ref by pushing into a repositorywhose HEAD
symbolic reference points at an unborn branch that cannot be
created due to ref D/F conflict (e.g. refs/heads/a/b exists, HEAD
points at refs/heads/a) failed.

* jx/do-not-crash-receive-pack-wo-head:
  receive-pack: crash when checking with non-exist HEAD
2015-08-03 11:01:31 -07:00
Junio C Hamano
0c54706528 Merge branch 'db/send-pack-user-signingkey'
The low-level "git send-pack" did not honor 'user.signingkey'
configuration variable when sending a signed-push.

* db/send-pack-user-signingkey:
  builtin/send-pack.c: respect user.signingkey
2015-08-03 11:01:30 -07:00
Junio C Hamano
b6d323f164 Merge branch 'dt/refs-backend-preamble'
In preparation for allowing different "backends" to store the refs
in a way different from the traditional "one ref per file in $GIT_DIR
or in a $GIT_DIR/packed-refs file" filesystem storage, reduce
direct filesystem access to ref-like things like CHERRY_PICK_HEAD
from scripts and programs.

* dt/refs-backend-preamble:
  git-stash: use update-ref --create-reflog instead of creating files
  update-ref and tag: add --create-reflog arg
  refs: add REF_FORCE_CREATE_REFLOG flag
  git-reflog: add exists command
  refs: new public ref function: safe_create_reflog
  refs: break out check for reflog autocreation
  refs.c: add err arguments to reflog functions
2015-08-03 11:01:29 -07:00
Junio C Hamano
d939af12bd Merge branch 'jk/date-mode-format'
Teach "git log" and friends a new "--date=format:..." option to
format timestamps using system's strftime(3).

* jk/date-mode-format:
  strbuf: make strbuf_addftime more robust
  introduce "format" date-mode
  convert "enum date_mode" into a struct
  show-branch: use DATE_RELATIVE instead of magic number
2015-08-03 11:01:27 -07:00
Junio C Hamano
2bf2d819e1 Merge branch 'ib/scripted-parse-opt-better-hint-string'
The "rev-parse --parseopt" mode parsed the option specification
and the argument hint in a strange way to allow '=' and other
special characters in the option name while forbidding them from
the argument hint.  This made it impossible to define an option
like "--pair <key>=<value>" with "pair=key=value" specification,
which instead would have defined a "--pair=key <value>" option.

* ib/scripted-parse-opt-better-hint-string:
  rev-parse --parseopt: allow [*=?!] in argument hints
2015-08-03 11:01:24 -07:00
Junio C Hamano
2dded96052 Merge branch 'dt/log-follow-config'
Add a new configuration variable to enable "--follow" automatically
when "git log" is run with one pathspec argument.

* dt/log-follow-config:
  log: add "log.follow" configuration variable
2015-08-03 11:01:20 -07:00
Junio C Hamano
d2c3464fef Merge branch 'jk/cat-file-batch-all'
"cat-file" learned "--batch-all-objects" option to enumerate all
available objects in the repository more quickly than "rev-list
--all --objects" (the output includes unreachable objects, though).

* jk/cat-file-batch-all:
  cat-file: sort and de-dup output of --batch-all-objects
  cat-file: add --batch-all-objects option
  cat-file: split batch_one_object into two stages
  cat-file: stop returning value from batch_one_object
  cat-file: add --buffer option
  cat-file: move batch_options definition to top of file
  cat-file: minor style fix in options list
2015-08-03 11:01:19 -07:00
Junio C Hamano
b2f44feba5 Merge branch 'js/fsck-opt'
Allow ignoring fsck errors on specific set of known-to-be-bad
objects, and also tweaking warning level of various kinds of non
critical breakages reported.

* js/fsck-opt:
  fsck: support ignoring objects in `git fsck` via fsck.skiplist
  fsck: git receive-pack: support excluding objects from fsck'ing
  fsck: introduce `git fsck --connectivity-only`
  fsck: support demoting errors to warnings
  fsck: document the new receive.fsck.<msg-id> options
  fsck: allow upgrading fsck warnings to errors
  fsck: optionally ignore specific fsck issues completely
  fsck: disallow demoting grave fsck errors to warnings
  fsck: add a simple test for receive.fsck.<msg-id>
  fsck: make fsck_tag() warn-friendly
  fsck: handle multiple authors in commits specially
  fsck: make fsck_commit() warn-friendly
  fsck: make fsck_ident() warn-friendly
  fsck: report the ID of the error/warning
  fsck (receive-pack): allow demoting errors to warnings
  fsck: offer a function to demote fsck errors to warnings
  fsck: provide a function to parse fsck message IDs
  fsck: introduce identifiers for fsck messages
  fsck: introduce fsck options
2015-08-03 11:01:18 -07:00
Junio C Hamano
be9cb560e3 Merge branch 'mh/init-delete-refs-api'
Clean up refs API and make "git clone" less intimate with the
implementation detail.

* mh/init-delete-refs-api:
  delete_ref(): use the usual convention for old_sha1
  cmd_update_ref(): make logic more straightforward
  update_ref(): don't read old reference value before delete
  check_branch_commit(): make first parameter const
  refs.h: add some parameter names to function declarations
  refs: move the remaining ref module declarations to refs.h
  initial_ref_transaction_commit(): check for ref D/F conflicts
  initial_ref_transaction_commit(): check for duplicate refs
  refs: remove some functions from the module's public interface
  initial_ref_transaction_commit(): function for initial ref creation
  repack_without_refs(): make function private
  prune_refs(): use delete_refs()
  prune_remote(): use delete_refs()
  delete_refs(): bail early if the packed-refs file cannot be rewritten
  delete_refs(): make error message more generic
  delete_refs(): new function for the refs API
  delete_ref(): handle special case more explicitly
  remove_branches(): remove temporary
  delete_ref(): move declaration to refs.h
2015-08-03 11:01:17 -07:00
Junio C Hamano
5f02274e4c Merge branch 'pt/pull-builtin'
Reimplement 'git pull' in C.

* pt/pull-builtin:
  pull: remove redirection to git-pull.sh
  pull --rebase: error on no merge candidate cases
  pull --rebase: exit early when the working directory is dirty
  pull: configure --rebase via branch.<name>.rebase or pull.rebase
  pull: teach git pull about --rebase
  pull: set reflog message
  pull: implement pulling into an unborn branch
  pull: fast-forward working tree if head is updated
  pull: check if in unresolved merge state
  pull: support pull.ff config
  pull: error on no merge candidates
  pull: pass git-fetch's options to git-fetch
  pull: pass git-merge's options to git-merge
  pull: pass verbosity, --progress flags to fetch and merge
  pull: implement fetch + merge
  pull: implement skeletal builtin pull
  argv-array: implement argv_array_pushv()
  parse-options-cb: implement parse_opt_passthru_argv()
  parse-options-cb: implement parse_opt_passthru()
2015-08-03 11:01:17 -07:00
Junio C Hamano
54d673f25d Merge branch 'ee/clean-remove-dirs'
Replace "is this subdirectory a separate repository that should not
be touched?" check "git clean" does by checking if it has .git/HEAD
using the submodule-related code with a more optimized check.

* ee/clean-remove-dirs:
  read_gitfile_gently: fix use-after-free
  clean: improve performance when removing lots of directories
  p7300: add performance tests for clean
  t7300: add tests to document behavior of clean and nested git
  setup: sanity check file size in read_gitfile_gently
  setup: add gentle version of read_gitfile
2015-08-03 11:01:13 -07:00
Junio C Hamano
e12b51e4d6 Merge branch 'cb/parse-magnitude'
Move machinery to parse human-readable scaled numbers like 1k, 4M,
and 2G as an option parameter's value from pack-objects to
parse-options API, to make it available to other codepaths.

* cb/parse-magnitude:
  parse-options: move unsigned long option parsing out of pack-objects.c
  test-parse-options: update to handle negative ints
2015-08-03 11:01:13 -07:00
Junio C Hamano
ba12cb299f Merge branch 'bc/gpg-verify-raw'
"git verify-tag" and "git verify-commit" have been taught to share
more code, and then learned to optionally show the verification
message from the underlying GPG implementation.

* bc/gpg-verify-raw:
  verify-tag: add option to print raw gpg status information
  verify-commit: add option to print raw gpg status information
  gpg: centralize printing signature buffers
  gpg: centralize signature check
  verify-commit: add test for exit status on untrusted signature
  verify-tag: share code with verify-commit
  verify-tag: add tests
2015-08-03 11:01:12 -07:00
Junio C Hamano
7ebc8cbedd Merge branch 'kn/for-each-ref'
GSoC project to rebuild ref listing by branch and tag based on the
for-each-ref machinery.  This is its first part.

* kn/for-each-ref:
  ref-filter: make 'ref_array_item' use a FLEX_ARRAY for refname
  for-each-ref: introduce filter_refs()
  ref-filter: move code from 'for-each-ref'
  ref-filter: add 'ref-filter.h'
  for-each-ref: rename variables called sort to sorting
  for-each-ref: rename some functions and make them public
  for-each-ref: introduce 'ref_array_clear()'
  for-each-ref: introduce new structures for better organisation
  for-each-ref: rename 'refinfo' to 'ref_array_item'
  for-each-ref: clean up code
  for-each-ref: extract helper functions out of grab_single_ref()
2015-08-03 11:01:11 -07:00
Junio C Hamano
31a0ad5456 Merge branch 'mh/replace-refs'
Add an environment variable to tell Git to look into refs hierarchy
other than refs/replace/ for the object replacement data.

* mh/replace-refs:
  Allow to control where the replace refs are looked for
2015-08-03 11:01:10 -07:00
Junio C Hamano
de67af4a8f Merge branch 'ss/clone-guess-dir-name-simplify' into maint
Code simplification.

* ss/clone-guess-dir-name-simplify:
  clone: simplify string handling in guess_dir_name()
2015-08-03 10:41:33 -07:00
Junio C Hamano
0533a9b70c Merge branch 'mh/reporting-broken-refs-from-for-each-ref' into maint
"git for-each-ref" reported "missing object" for 0{40} when it
encounters a broken ref.  The lack of object whose name is 0{40} is
not the problem; the ref being broken is.

* mh/reporting-broken-refs-from-for-each-ref:
  read_loose_refs(): treat NULL_SHA1 loose references as broken
  read_loose_refs(): simplify function logic
  for-each-ref: report broken references correctly
  t6301: new tests of for-each-ref error handling
2015-08-03 10:41:31 -07:00
Karthik Nayak
4a71109aa4 for-each-ref: add '--contains' option
Add the '--contains' option provided by 'ref-filter'. The '--contains'
option lists only refs which contain the mentioned commit (HEAD if no
commit is explicitly given).

Add documentation and tests 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>
2015-08-03 10:25:28 -07:00
Karthik Nayak
ee2bd06b0f ref-filter: implement '--contains' option
'tag -l' and 'branch -l' have two different ways of finding
out if a certain ref contains a commit. Implement both these
methods in ref-filter and give the caller of ref-filter API
the option to pick which implementation to be used.

'branch -l' uses 'is_descendant_of()' from commit.c which is
left as the default implementation to be used.

'tag -l' uses a more specific algorithm since ffc4b80. This
implementation is used whenever the 'with_commit_tag_algo' bit
is set in 'struct ref_filter'.

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>
2015-08-03 10:25:28 -07:00
Karthik Nayak
f266c9163b parse-options.h: add macros for '--contains' option
Add a macro for using the '--contains' option in parse-options.h
also include an optional '--with' option macro which performs the
same action as '--contains'.

Make tag.c and branch.c use this new macro.

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>
2015-08-03 10:25:28 -07:00
Karthik Nayak
9d306b5a60 parse-option: rename parse_opt_with_commit()
Rename parse_opt_with_commit() to parse_opt_commits() to show
that it can be used to obtain a list of commits and is not
constricted to usage of '--contains' option.

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>
2015-08-03 10:25:28 -07:00
Karthik Nayak
7c32834813 for-each-ref: add '--merged' and '--no-merged' options
Add the '--merged' and '--no-merged' options provided by 'ref-filter'.
The '--merged' option lets the user to only list refs merged into the
named commit. The '--no-merged' option lets the user to only list refs
not merged into the named commit.

Add documentation and tests for the same.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:28 -07:00
Karthik Nayak
35257aa012 ref-filter: implement '--merged' and '--no-merged' options
In 'branch -l' we have '--merged' option which only lists refs (branches)
merged into the named commit and '--no-merged' option which only lists
refs (branches) not merged into the named commit. Implement these two
options in ref-filter.{c,h} so that other commands can benefit from this.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:28 -07:00
Karthik Nayak
5afcb90560 ref-filter: add parse_opt_merge_filter()
Add 'parse_opt_merge_filter()' to parse '--merged' and '--no-merged'
options and write macros for the same.

This is copied from 'builtin/branch.c' which will eventually be removed
when we port 'branch.c' to use ref-filter APIs.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:28 -07:00
Karthik Nayak
d325406ef2 for-each-ref: add '--points-at' option
Add the '--points-at' option provided by 'ref-filter'. The
option lets the user to list only refs which points at the
given object.

Add documentation and tests for the same.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:28 -07:00
Karthik Nayak
68411046b5 ref-filter: implement '--points-at' option
In 'tag -l' we have '--points-at' option which lets users
list only tags of a given object. Implement this option in
'ref-filter.{c,h}' so that other commands can benefit from this.

This is duplicated from tag.c, we will eventually remove that
when we port tag.c to use ref-filter APIs.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:27 -07:00
Karthik Nayak
b2172fdf70 tag: libify parse_opt_points_at()
Rename 'parse_opt_points_at()' to 'parse_opt_object_name()' and
move it from 'tag.c' to 'parse-options'. This now acts as a common
parse_opt function which accepts an objectname and stores it into
a sha1_array.

Based-on-patch-by: Jeff King <peff@peff.net>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:25:27 -07:00
Karthik Nayak
14de7fba34 for-each-ref: introduce filter_refs()
Introduce filter_refs() which will act as an API for filtering
a set of refs. Based on the type of refs the user has requested,
we iterate through those refs and apply filters as per the
given ref_filter structure and finally store the filtered refs
in the ref_array structure.

Currently this will wrap around ref_filter_handler(). Hence,
ref_filter_handler is made file scope static.

As users of this API will no longer send a ref_filter_cbdata
structure directly, we make the elements of ref_filter_cbdata
pointers. We can now use the information given by the users
to obtain our own ref_filter_cbdata structure. Changes are made to
support the change in ref_filter_cbdata structure.

Make 'for-each-ref' use this API.

Helped-by: Junio C Hamano <gitster@pobox.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:24:07 -07:00
Karthik Nayak
c95b758587 ref-filter: move code from 'for-each-ref'
Move most of the code from 'for-each-ref' to 'ref-filter' to make
it publicly available to other commands, this is to unify the code
of 'tag -l', 'branch -l' and 'for-each-ref' so that they can share
their implementations with each other.

Add 'ref-filter' to the Makefile, this completes the movement of code
from 'for-each-ref' to 'ref-filter'.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-03 10:24:07 -07:00
Stefan Beller
45abdee662 add: remove dead code
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-31 08:49:33 -07:00
Michael Haggerty
bc598c32ae get_remote_group(): use skip_prefix()
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-28 14:39:26 -07:00
Michael Haggerty
5f65499fa2 get_remote_group(): eliminate superfluous call to strcspn()
There is no need to call it if value is the empty string. This also
eliminates code duplication.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-28 14:39:24 -07:00
Michael Haggerty
e286542de0 get_remote_group(): rename local variable "space" to "wordlen"
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-28 14:39:21 -07:00
Michael Haggerty
c26f7d7b26 get_remote_group(): handle remotes with single-character names
The code for splitting a whitespace-separated list of values in
"remotes.<name>" had an off-by-one error that caused it to skip over
remotes whose names consist of a single character.

Also remove unnecessary braces.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-28 14:39:10 -07:00
Junio C Hamano
3afcec9057 Merge branch 'ls/hint-rev-list-count' into maint
* ls/hint-rev-list-count:
  rev-list: add --count to usage guide
2015-07-27 12:21:47 -07:00
Junio C Hamano
726359be47 Merge branch 'jk/rev-list-no-bitmap-while-pruning' into maint
A minor bugfix when pack bitmap is used with "rev-list --count".

* jk/rev-list-no-bitmap-while-pruning:
  rev-list: disable --use-bitmap-index when pruning commits
2015-07-27 12:21:42 -07:00
Junio C Hamano
de62fe8c42 Merge branch 'jk/index-pack-reduce-recheck' into maint
Disable "have we lost a race with competing repack?" check while
receiving a huge object transfer that runs index-pack.

* jk/index-pack-reduce-recheck:
  index-pack: avoid excessive re-reading of pack directory
2015-07-27 12:21:38 -07:00
Junio C Hamano
1d51eced10 rerere: use "struct rerere_id" instead of "char *" for conflict ID
This gives a thin abstraction between the conflict ID that is a hash
value obtained by inspecting the conflicts and the name of the
directory under $GIT_DIR/rr-cache/, in which the previous resolution
is recorded to be replayed.  The plan is to make sure that the
presence of the directory does not imply the presense of a previous
resolution and vice-versa, and later allow us to have more than one
pair of <preimage, postimage> for a given conflict ID.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-24 16:05:26 -07:00
Junio C Hamano
18bb99342f rerere: call conflict-ids IDs
Most places we call conflict IDs "name" and some others we call them
"hex"; update all of them to "id".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-24 16:04:41 -07:00
Jiang Xin
b112b14d78 receive-pack: crash when checking with non-exist HEAD
If HEAD of a repository points to a conflict reference, such as:

* There exist a reference named 'refs/heads/jx/feature1', but HEAD
  points to 'refs/heads/jx', or

* There exist a reference named 'refs/heads/feature', but HEAD points
  to 'refs/heads/feature/bad'.

When we push to delete a reference for this repo, such as:

        git push /path/to/bad-head-repo.git :some/good/reference

The git-receive-pack process will crash.

This is because if HEAD points to a conflict reference, the function
`resolve_refdup("HEAD", ...)` does not return a valid reference name,
but a null buffer.  Later matching the delete reference against the null
buffer will cause git-receive-pack crash.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-22 14:18:22 -07:00
Kevin Daudt
53c76dc05e pull: allow dirty tree when rebase.autostash enabled
rebase learned to stash changes when it encounters a dirty work tree,
but git pull --rebase does not.

Only verify if the working tree is dirty when rebase.autostash is not
enabled.

Signed-off-by: Kevin Daudt <me@ikke.info>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-22 12:56:30 -07:00
Junio C Hamano
d830d395a1 builtin/send-pack.c: respect user.signingkey
When git-send-pack is exec'ed, as is done by git-remote-http, it
does not read the config, and configured value of user.signingkey is
ignored. Thus it was impossible to specify a signing key over HTTP,
other than the default key in the keyring having a User ID matching
the "Name <email>" format.

This patch at least partially fixes the problem by reading in the GPG
config from within send-pack. It does not address the related problem
of plumbing a value for this configuration option using
`git -c user.signingkey push ...`.

Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-21 15:24:27 -07:00
David Turner
144c76fa39 update-ref and tag: add --create-reflog arg
Allow the creation of a ref (e.g. stash) with a reflog already in
place. For most refs (e.g. those under refs/heads), this happens
automatically, but for others, we need this option.

Currently, git does this by pre-creating the reflog, but alternate ref
backends might store reflogs somewhere other than .git/logs.  Code
that now directly manipulates .git/logs should instead use git
plumbing commands.

I also added --create-reflog to git tag, just for completeness.

In a moment, we will use this argument to make git stash work with
alternate ref backends.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-21 14:08:35 -07:00
David Turner
afcb2e7a3b git-reflog: add exists command
This is necessary because alternate ref backends might store reflogs
somewhere other than .git/logs.  Code that now directly manipulates
.git/logs should instead go through git-reflog.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-21 14:08:14 -07:00
David Turner
abd0cd3a30 refs: new public ref function: safe_create_reflog
The safe_create_reflog function creates a reflog, if it does not
already exist.

The log_ref_setup function becomes private and gains a force_create
parameter to force the creation of a reflog even if log_all_ref_updates
is false or the refname is not one of the special refnames.

The new parameter also reduces the need to store, modify, and restore
the log_all_ref_updates global before reflog creation.

In a moment, we will use this to add reflog creation commands to
git-reflog.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-21 14:07:59 -07:00
David Turner
a4c653dfcd refs.c: add err arguments to reflog functions
Add an err argument to log_ref_setup that can explain the reason
for a failure. This then eliminates the need to manage errno through
this function since we can just add strerror(errno) to the err string
when meaningful. No callers relied on errno from this function for
anything else than the error message.

Also add err arguments to private functions write_ref_to_lockfile,
log_ref_write_1, commit_ref_update. This again eliminates the need to
manage errno in these functions.

Some error messages are slightly reordered.

Update of a patch by Ronnie Sahlberg.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-21 14:07:28 -07:00
Eric Sunshine
272be14a85 checkout: drop intimate knowledge of newly created worktree
Now that git-worktree no longer relies upon git-checkout for new branch
creation, new worktree HEAD set up, or initial worktree population,
git-checkout no longer needs intimate knowledge that it may be operating
in a newly created worktree. Therefore, drop 'new_worktree_mode' and the
private GIT_CHECKOUT_NEW_WORKTREE environment variable by which
git-worktree communicated to git-checkout that it was being invoked to
manipulate a new worktree.

This reverts the remaining changes to checkout.c by 529fef2 (checkout:
support checking out into a new working directory, 2014-11-30).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
1c56190aec worktree: populate via "git reset --hard" rather than "git checkout"
Now that git-worktree handles all functionality (--force, --detach,
-b/-B) previously delegated to git-checkout, actual population of the
new worktree can be accomplished more directly and lightweight with
"git reset --hard" in place of "git checkout".

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
ed197a6ab9 worktree: avoid resolving HEAD unnecessarily
Now that git-worktree sets HEAD explicitly to its final value via either
git-symbolic-ref or git-update-ref, rather than relying upon
git-checkout to do so, the "hack" for pacifying is_git_directory() with
a temporary HEAD, though still necessary, can be simplified.

Since the real HEAD is now populated with its proper final value, the
value of the temporary HEAD truly no longer matters, and any value which
looks like an object ID is good enough to satisfy is_git_directory().
Therefore, just set the temporary HEAD to a literal value rather than
going through the effort of resolving the current branch's HEAD.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
7f44e3d1de worktree: make setup of new HEAD distinct from worktree population
git-worktree currently conflates setting of HEAD in the new worktree and
initial worktree population into a single git-checkout invocation which
requires git-checkout to have special knowledge that it is operating on
a newly created worktree. The eventual goal is to rid git-checkout of
that overly-intimate knowledge.

Once these operations are separate, git-worktree will no longer be able
to delegate to git-branch the setting of the new worktree's HEAD to the
desired branch (or commit, if detached). Therefore, make git-worktree
itself responsible for setting up HEAD as either a symbolic reference,
if associated with a branch, or detached, if not.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
f7c9dac1b0 worktree: detect branch-name/detached and error conditions locally
git-worktree currently conflates setting of HEAD in the new worktree
with initial worktree population via a single git-checkout invocation,
which requires git-checkout to have special knowledge that it is
operating in a newly created worktree. The eventual goal is to separate
these operations and rid git-checkout of that overly-intimate knowledge.

Once these operations are separate, git-worktree will no longer be able
to rely upon git-branch to determine the state of the worktree (branch
name or detached), or to check for error conditions, such as the
requested branch already checked out elsewhere, or an invalid reference.
Therefore, imbue git-worktree with the intelligence to determine a
branch name or detached state locally, and to perform error checking on
its own.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
80a0548f6c worktree: add_worktree: construct worktree-population command locally
The caller of add_worktree() provides it with a command to invoke to
populate the new worktree. This was a useful abstraction during the
conversion of "git checkout --to" functionality to "git worktree add"
since git-checkout and git-worktree constructed the population command
differently. However, now that "git checkout --to" has been retired, and
add_worktree() has access to the options given to "worktree add", this
extra indirection is no longer useful and makes the code a bit
convoluted.

Moreover, the eventual goal is for git-worktree to make setting of HEAD
and worktree population distinct operations, whereas they are currently
conflated into a single git-checkout invocation. As such, add_worktree()
will eventually invoke other commands in addition to the worktree
population command, so it will be doing command construction itself
anyhow.

Therefore, relocate construction of the worktree population command from
add() to add_worktree().

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:52 -07:00
Eric Sunshine
ae2a38271f worktree: elucidate environment variables intended for child processes
Take advantage of 'struct child_process.env' to make it obvious that
environment variables set by add_worktree() are intended specifically
for sub-commands it invokes to operate in the new worktree.

We assign a local 'struct argv_array' to child_process.env, rather than
utilizing the child_process.env_array 'struct argv_array', because
future patches will make add_worktree() invoke additional sub-commands,
and it's simpler to populate the environment array just once, whereas
child_process.env_array gets cleared after each invocation, thus would
require re-population for each sub-command.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:51 -07:00
Eric Sunshine
c2842439a3 worktree: make branch creation distinct from worktree population
git-worktree currently conflates branch creation, setting of HEAD in the
new worktree, and worktree population into a single sub-invocation of
git-checkout, which requires git-checkout to be specially aware that it
is operating in a newly-created worktree. The goal is to free
git-checkout of that special knowledge, and to do so, git-worktree will
eventually perform those operations separately. Thus, as a first step,
rather than piggybacking on git-checkout's -b/-B ability to create a new
branch at checkout time, make git-worktree responsible for branch
creation itself.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:51 -07:00
Eric Sunshine
5c942570fe worktree: add: suppress auto-vivication with --detach and no <branch>
Fix oversight where branch auto-vivication incorrectly kicks in when
--detach is specified and <branch> omitted. Instead, treat:

    git worktree add --detach <path>

as shorthand for:

    git worktree add --detach <path> HEAD

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:51 -07:00
Eric Sunshine
ab0b2c53ed worktree: make --detach mutually exclusive with -b/-B
Be consistent with git-checkout which disallows this (not particularly
meaningful) combination.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
5dd6e234a7 worktree: introduce options container
add_worktree() will eventually need to deal with some options itself, so
introduce a structure into which options can be conveniently bundled,
and pass it along to add_worktree().

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
eef005dcb3 worktree: simplify new branch (-b/-B) option checking
Make 'new_branch' be the name of the new branch for both forced and
non-forced cases; and add boolean 'force_new_branch' to indicate forced
branch creation. This will simplify logic later on when git-worktree
handles branch creation locally rather than delegating it to
git-checkout as part of the worktree population phase.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
cd2f471311 worktree: improve worktree setup message
When git-worktree creates a new worktree, it reports:

    Enter "<path>" (identifier <tag>)

which misleadingly implies that it is setting <path> as the working
directory (as if "cd <path>" had been invoked), whereas it's actually
preparing the new worktree by creating its administrative files, setting
HEAD, and populating it. Make this more clear by instead saying:

    Preparing "<path>" (identifier <tag>)

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
ed89f84b3c branch: publish die_if_checked_out()
git-worktree currently conflates new branch creation, setting of HEAD in
the new wortkree, and worktree population into a single sub-invocation
of git-checkout. However, these operations will eventually be separated,
and git-worktree itself will need to be able to detect if the branch is
already checked out elsewhere, rather than relying upon git-branch to
make this determination, so publish die_if_checked_out().

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
746bbdc64f checkout: teach check_linked_checkout() about symbolic link HEAD
check_linked_checkout() only understands symref-style HEAD (i.e. "ref:
refs/heads/master"), however, HEAD may also be a an actual symbolic link
(on platforms which support it). To accurately detect if a branch is
checked out elsewhere, it needs to handle symbolic link HEAD, as well.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
33aef83666 checkout: check_linked_checkout: simplify symref parsing
check_linked_checkout() only understands symref-style HEAD (i.e. "ref:
refs/heads/master"), however, HEAD may also be a an actual symbolic link
(on platforms which support it), thus it will need to check that style
HEAD, as well (via readlink()). As a preparatory step, simplify parsing
of symref-style HEAD so the actual branch check can be re-used easily
for symbolic links (in an upcoming patch).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
39e69e1519 checkout: check_linked_checkout: improve "already checked out" aesthetic
When check_linked_checkout() discovers that the branch is already
checked out elsewhere, it emits the diagnostic:

    'blorp' is already checked out at '/some/path/.git'

which is misleading since "checked out at" implies the working tree, but
".git" is the location of the repository administrative files. Fix by
dropping ".git" from the message.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
4341460d92 checkout: generalize die_if_checked_out() branch name argument
The plan is to publish die_if_checked_out() so that callers other than
git-checkout can take advantage of it, however, those callers won't have
access to git-checkout's "struct branch_info". Therefore, change it to
accept the full name of the branch as a simple string instead.

While here, also give the argument a more meaningful name ("branch"
instead of "new").

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
4e07815dba checkout: die_if_checked_out: simplify strbuf management
There is no reason to keep the strbuf active long after its last use.
By releasing it as early as possible, resource management is simplified
and there is less worry about future changes resulting in a leak.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
aaad2c948f checkout: improve die_if_checked_out() robustness
die_if_checked_out() is intended to check if the branch about to be
checked out is already checked out either in the main worktree or in a
linked worktree. However, if .git/worktrees directory does not exist,
then it never bothers checking the main worktree, even though the
specified branch might indeed be checked out there, which is fragile
behavior.

This hasn't been a problem in practice since the current implementation
of "git worktree add" (and, earlier, "git checkout --to") always creates
.git/worktrees before die_if_checked_out() is called by the child "git
checkout" invocation which populates the new worktree.

However, git-worktree will eventually want to call die_if_checked_out()
itself rather than only doing so indirectly as a side-effect of invoking
git-checkout, and reliance upon order of operations (creating
.git/worktrees before checking if a branch is already checked out) is
fragile. As a general function, callers should not be expected to abide
by this undocumented and unwarranted restriction. Therefore, make
die_if_checked_out() more robust by checking the main worktree whether
.git/worktrees exists or not.

While here, also move a comment explaining why die_if_checked_out()'s
helper parses HEAD manually. Such information resides more naturally
with the helper itself rather than at its first point of call.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
e13d37094e checkout: name check_linked_checkouts() more meaningfully
check_linked_checkouts() doesn't just "check" linked checkouts for
"something"; specifically, it aborts the operation if the branch about
to be checked out is already checked out elsewhere. Therefore, rename it
to die_if_checked_out() to give a better indication of its function.
The more meaningful name will be particularly important when this
function is later published for use by other callers.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
c265c533cf checkout: avoid resolving HEAD unnecessarily
When --ignore-other-worktree is specified, we unconditionally skip the
check to see if the requested branch is already checked out in a linked
worktree. Since we know that we will be skipping that check, there is no
need to resolve HEAD in order to detect other conditions under which we
may skip the check.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:29:24 -07:00
Eric Sunshine
114ff8881a config: rename "gc.pruneWorktreesExpire" to "gc.worktreePruneExpire"
As of df0b6cf (worktree: new place for "git prune --worktrees",
2015-06-29), linked worktree pruning functionality moved from
"git prune --worktrees" to "git worktree prune". Rename the
associated configuration variable accordingly.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-20 11:09:06 -07:00
Junio C Hamano
697f67ac9f Merge branch 'mh/fsck-reflog-entries' into maint
"git fsck" used to ignore missing or invalid objects recorded in reflog.

* mh/fsck-reflog-entries:
  fsck: report errors if reflog entries point at invalid objects
  fsck_handle_reflog_sha1(): new function
2015-07-15 11:41:19 -07:00
Junio C Hamano
93eba05b4f Merge branch 'jc/do-not-feed-tags-to-clear-commit-marks' into maint
"git format-patch --ignore-if-upstream A..B" did not like to be fed
tags as boundary commits.

* jc/do-not-feed-tags-to-clear-commit-marks:
  format-patch: do not feed tags to clear_commit_marks()
2015-07-15 11:41:16 -07:00
Ilya Bobyr
2d893dff4c rev-parse --parseopt: allow [*=?!] in argument hints
A line in the input to "rev-parse --parseopt" describes an option by
listing a short and/or long name, optional flags [*=?!], argument hint,
and then whitespace and help string.

We did not allow any of the [*=?!] characters in the argument hints.
The following input

    pair=key=value  equals sign in the hint

used to generate a help line like this:

    --pair=key <value>   equals sign in the hint

and used to expect "pair=key" as the argument name.

That is not very helpful as we generally do not want any of the [*=?!]
characters in the argument names.  But we do want to use at least the
equals sign in the argument hints.

Update the parser to make long argument names stop at the first [*=?!]
character.

Add test case with equals sign in the argument hint and update the test
to perform all the operations in test_expect_success matching the
t/README requirements and allowing commands like

    ./t1502-rev-parse-parseopt.sh --run=1-2

to stop at the test case 2 without any further modification of the test
state area.

Signed-off-by: Ilya Bobyr <ilya.bobyr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-15 10:30:54 -07:00
Junio C Hamano
799767cc98 Merge branch 'es/worktree-add'
Update to the "linked checkout" in 2.5.0-rc1.

Instead of "checkout --to" that does not do what "checkout"
normally does, move the functionality to "git worktree add".

* es/worktree-add: (24 commits)
  Revert "checkout: retire --ignore-other-worktrees in favor of --force"
  checkout: retire --ignore-other-worktrees in favor of --force
  worktree: add: auto-vivify new branch when <branch> is omitted
  worktree: add: make -b/-B default to HEAD when <branch> is omitted
  worktree: extract basename computation to new function
  checkout: require worktree unconditionally
  checkout: retire --to option
  tests: worktree: retrofit "checkout --to" tests for "worktree add"
  worktree: add -b/-B options
  worktree: add --detach option
  worktree: add --force option
  worktree: introduce "add" command
  checkout: drop 'checkout_opts' dependency from prepare_linked_checkout
  checkout: make --to unconditionally verbose
  checkout: prepare_linked_checkout: drop now-unused 'new' argument
  checkout: relocate --to's "no branch specified" check
  checkout: fix bug with --to and relative HEAD
  Documentation/git-worktree: add EXAMPLES section
  Documentation/git-worktree: add high-level 'lock' overview
  Documentation/git-worktree: split technical info from general description
  ...
2015-07-13 14:02:19 -07:00
Junio C Hamano
7783eb2e59 Merge branch 'nd/multiple-work-trees'
"git checkout [<tree-ish>] <paths>" spent unnecessary cycles
checking if the current branch was checked out elsewhere, when we
know we are not switching the branches ourselves.

* nd/multiple-work-trees:
  worktree: new place for "git prune --worktrees"
  checkout: don't check worktrees when not necessary
2015-07-13 14:02:02 -07:00
Junio C Hamano
721f5bb896 Merge branch 'ss/clone-guess-dir-name-simplify'
Code simplification.

* ss/clone-guess-dir-name-simplify:
  clone: simplify string handling in guess_dir_name()
2015-07-13 14:00:28 -07:00
Junio C Hamano
c925fe2368 Revert "checkout: retire --ignore-other-worktrees in favor of --force"
This reverts commit 0d1a151783.

When trying to switch to a different branch, that happens to be
checked out in another working tree, the user shouldn't have to
give up the other safety measures (like protecting the local changes
that overlap the difference between the branches) while defeating
the "no two checkouts of the same branch" safety.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-12 09:38:21 -07:00
Junio C Hamano
b3a30f6e0c Merge branch 'ls/hint-rev-list-count'
* ls/hint-rev-list-count:
  rev-list: add --count to usage guide
2015-07-10 14:26:13 -07:00
Junio C Hamano
ace6325ddf Merge branch 'jk/rev-list-no-bitmap-while-pruning'
A minor bugfix when pack bitmap is used with "rev-list --count".

* jk/rev-list-no-bitmap-while-pruning:
  rev-list: disable --use-bitmap-index when pruning commits
2015-07-10 14:26:12 -07:00
Junio C Hamano
0bf46af089 Merge branch 'jc/fix-alloc-sortbuf-in-index-pack'
A hotfix for what is in 2.5-rc but not in 2.4.

* jc/fix-alloc-sortbuf-in-index-pack:
  index-pack: fix allocation of sorted_by_pos array
2015-07-09 14:31:42 -07:00
Sebastian Schuberth
7e837c6477 clone: simplify string handling in guess_dir_name()
Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-09 14:21:29 -07:00
David Turner
076c98372e log: add "log.follow" configuration variable
People who work on projects with mostly linear history with frequent
whole file renames may want to always use "git log --follow" when
inspecting the life of the content that live in a single path.

Teach the command to behave as if "--follow" was given from the
command line when log.follow configuration variable is set *and*
there is one (and only one) path on the command line.

Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-09 10:24:23 -07:00
Eric Sunshine
0d1a151783 checkout: retire --ignore-other-worktrees in favor of --force
As a safeguard, checking out a branch already checked out by a different
worktree is disallowed. This behavior can be overridden with
--ignore-other-worktrees, however, this option is neither obvious nor
particularly discoverable. As a common safeguard override, --force is
more likely to come to mind. Therefore, overload it to also suppress the
check for a branch already checked out elsewhere.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-07 14:34:46 -07:00
Eric Sunshine
1eb07d829f worktree: add: auto-vivify new branch when <branch> is omitted
As a convenience, when <branch> is omitted from "git worktree <path>
<branch>" and neither -b nor -B is used, automatically create a new
branch named after <path>, as if "-b $(basename <path>)" was specified.
Thus, "git worktree add ../hotfix" creates a new branch named "hotfix"
and associates it with new worktree "../hotfix".

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-07 14:34:32 -07:00
Eric Sunshine
0f4af3b9ea worktree: add: make -b/-B default to HEAD when <branch> is omitted
As a convenience, like "git branch" and "git checkout -b", make
"git worktree add -b <newbranch> <path> <branch>" default to HEAD when
<branch> is omitted.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:48 -07:00
Eric Sunshine
f5682b2a86 worktree: extract basename computation to new function
A subsequent patch will also need to compute the basename of the new
worktree, so factor out this logic into a new function.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:48 -07:00
Eric Sunshine
0ca560cb97 checkout: require worktree unconditionally
In order to allow linked worktree creation via "git checkout --to" from
a bare repository, 3473ad0 (checkout: don't require a work tree when
checking out into a new one, 2014-11-30) dropped git-checkout's
unconditional NEED_WORK_TREE requirement and instead performed worktree
setup conditionally based upon presence or absence of the --to option.
Now that --to has been retired and git-checkout is no longer responsible
for linked worktree creation, the NEED_WORK_TREE requirement can be
re-instated.

This effectively reverts 3473ad0, except for the tests it added which
now check bare repository behavior of "git worktree add" instead.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:48 -07:00
Eric Sunshine
b979d95027 checkout: retire --to option
Now that "git worktree add" has achieved user-facing feature-parity with
"git checkout --to", retire the latter.

Move the actual linked worktree creation functionality,
prepare_linked_checkout() and its helpers, verbatim from checkout.c to
worktree.c.

This effectively reverts changes to checkout.c by 529fef2 (checkout:
support checking out into a new working directory, 2014-11-30) with the
exception of merge_working_tree() and switch_branches() which still
require specialized knowledge that a the checkout is occurring in a
newly-created linked worktree (signaled to them by the private
GIT_CHECKOUT_NEW_WORKTREE environment variable).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:47 -07:00
Eric Sunshine
cbdf60fa18 worktree: add -b/-B options
One of git-worktree's roles is to populate the new worktree, much like
git-checkout, and thus, for convenience, ought to support several of the
same shortcuts. Toward this goal, add -b/-B options to create a new
branch and check it out in the new worktree.

(For brevity, only -b is mentioned in the synopsis; -B is omitted.)

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:47 -07:00
Eric Sunshine
39ecb27436 worktree: add --detach option
One of git-worktree's roles is to populate the new worktree, much like
git-checkout, and thus, for convenience, ought to support several of the
same shortcuts. Toward this goal, add a --detach option to detach HEAD
in the new worktree.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:46 -07:00
Eric Sunshine
f43254440d worktree: add --force option
By default, "git worktree add" refuses to create a new worktree when
the requested branch is already checked out elsewhere. Add a --force
option to override this safeguard.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:46 -07:00
Eric Sunshine
fc56361f58 worktree: introduce "add" command
The plan is to relocate "git checkout --to" functionality to "git
worktree add". As a first step, introduce a bare-bones git-worktree
"add" command along with documentation. At this stage, "git worktree
add" merely invokes "git checkout --to" behind the scenes, but an
upcoming patch will move the actual functionality
(checkout.c:prepare_linked_checkout() and its helpers) to worktree.c.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:45 -07:00
Eric Sunshine
bdf0f375b9 checkout: drop 'checkout_opts' dependency from prepare_linked_checkout
The plan is to relocate "git checkout --to" functionality to "git
worktree add", however, worktree.c won't have access to the 'struct
checkout_opts' passed to prepare_linked_worktree(), which it consults
for the pathname of the new worktree and the argv[] of the command it
should run to populate the new worktree. Facilitate relocation of
prepare_linked_worktree() by instead having it accept the pathname and
argv[] directly, thus eliminating the final references to 'struct
checkout_opts'.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:45 -07:00
Eric Sunshine
338dfd0da4 checkout: make --to unconditionally verbose
prepare_linked_checkout() respects git-checkout's --quiet flag, however,
the plan is to relocate "git checkout --to" functionality to "git
worktree add", and git-worktree does not (yet) have a --quiet flag.
Consequently, make prepare_linked_checkout() unconditionally verbose to
ease eventual code movement to worktree.c.

(A --quiet flag can be added to git-worktree later if there is demand
for it.)

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:45 -07:00
Eric Sunshine
3c3e7f5b57 checkout: prepare_linked_checkout: drop now-unused 'new' argument
The only references to 'new' were folded out by the last two patches.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:44 -07:00
Eric Sunshine
9559ce8368 checkout: relocate --to's "no branch specified" check
The plan is to relocate "git checkout --to" functionality to "git
worktree add", however, this check expects a 'struct branch_info' which
git-worktree won't have at hand. It will, however, have access to its
own command-line from which it can pick up the branch name. Therefore,
as a preparatory step, rather than having prepare_linked_checkout()
perform this check, make it the caller's responsibility.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:44 -07:00
Eric Sunshine
c990a4c11d checkout: fix bug with --to and relative HEAD
Given "git checkout --to <path> HEAD~1", the new worktree's HEAD should
begin life at the current branch's HEAD~1, however, it actually ends up
at HEAD~2. This happens because:

    1. git-checkout resolves HEAD~1

    2. to satisfy is_git_directory(), prepare_linked_worktree() creates
       a HEAD for the new worktree with the value of the resolved HEAD~1

    3. git-checkout re-invokes itself with the same arguments within the
       new worktree to populate the worktree

    4. the sub git-checkout resolves HEAD~1 relative to its own HEAD,
       which is the resolved HEAD~1 from the original invocation,
       resulting unexpectedly and incorrectly in HEAD~2 (relative to the
       original)

Fix this by unconditionally assigning the current worktree's HEAD as the
value of the new worktree's HEAD.

As a side-effect, this change also eliminates a dependence within
prepare_linked_checkout() upon 'struct branch_info'. The plan is to
eventually relocate "git checkout --to" functionality to "git worktree
add", and worktree.c won't have knowledge of 'struct branch_info', so
removal of this dependency is a step toward that goal.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-06 11:07:44 -07:00
Junio C Hamano
781d93067d index-pack: fix allocation of sorted_by_pos array
When c6458e60 (index-pack: kill union delta_base to save memory,
2015-04-18) attempted to reduce the memory footprint of index-pack,
one of the key thing it did was to keep track of ref-deltas and
ofs-deltas separately.

In fix_unresolved_deltas(), however it forgot that it now wants to
look only at ref deltas in one place.  The code allocated an array
for nr_unresolved, which is sum of number of ref- and ofs-deltas
minus nr_resolved, which may be larger or smaller than the number
ref-deltas.  Depending on nr_resolved, this was either under or over
allocating.

Also, the old code before this change had to use 'i' and 'n' because
some of the things we see in the (old) deltas[] array we scanned
with 'i' would not make it into the sorted_by_pos[] array in the old
world order, but now because you have only ref delta in a separate
ref_deltas[] array, they increment lock&step.  We no longer need
separate variables.  And most importantly, we shouldn't pass the
nr_unresolved parameter, as this number does not play a role in the
working of this helper function.

Helped-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-04 15:26:03 -07:00
Jeff King
c8a70d3509 rev-list: disable --use-bitmap-index when pruning commits
The reachability bitmaps do not have enough information to
tell us which commits might have changed path "foo", so the
current code produces wrong answers for:

  git rev-list --use-bitmap-index --count HEAD -- foo

(it silently ignores the "foo" limiter). Instead, we should
fall back to doing a normal traversal (it is OK to fall
back rather than complain, because --use-bitmap-index is a
pure optimization, and might not kick in for other reasons,
such as there being no bitmaps in the repository).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-01 12:00:50 -07:00
Lawrence Siebert
75d2e5a7b0 rev-list: add --count to usage guide
--count should be mentioned in the usage guide, this updates code and
documentation.

Signed-off-by: Lawrence Siebert <lawrencesiebert@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-01 09:29:11 -07:00
Jeff King
aa1462cc3d introduce "format" date-mode
This feeds the format directly to strftime. Besides being a
little more flexible, the main advantage is that your system
strftime may know more about your locale's preferred format
(e.g., how to spell the days of the week).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29 11:39:10 -07:00
Jeff King
a5481a6c94 convert "enum date_mode" into a struct
In preparation for adding date modes that may carry extra
information beyond the mode itself, this patch converts the
date_mode enum into a struct.

Most of the conversion is fairly straightforward; we pass
the struct as a pointer and dereference the type field where
necessary. Locations that declare a date_mode can use a "{}"
constructor.  However, the tricky case is where we use the
enum labels as constants, like:

  show_date(t, tz, DATE_NORMAL);

Ideally we could say:

  show_date(t, tz, &{ DATE_NORMAL });

but of course C does not allow that. Likewise, we cannot
cast the constant to a struct, because we need to pass an
actual address. Our options are basically:

  1. Manually add a "struct date_mode d = { DATE_NORMAL }"
     definition to each caller, and pass "&d". This makes
     the callers uglier, because they sometimes do not even
     have their own scope (e.g., they are inside a switch
     statement).

  2. Provide a pre-made global "date_normal" struct that can
     be passed by address. We'd also need "date_rfc2822",
     "date_iso8601", and so forth. But at least the ugliness
     is defined in one place.

  3. Provide a wrapper that generates the correct struct on
     the fly. The big downside is that we end up pointing to
     a single global, which makes our wrapper non-reentrant.
     But show_date is already not reentrant, so it does not
     matter.

This patch implements 3, along with a minor macro to keep
the size of the callers sane.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29 11:39:07 -07:00
Jeff King
b7c1e11dc4 show-branch: use DATE_RELATIVE instead of magic number
This is more readable, and won't break if we ever change the
order of the date_mode enum.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29 11:39:04 -07:00
Nguyễn Thái Ngọc Duy
df0b6cfbda worktree: new place for "git prune --worktrees"
Commit 23af91d (prune: strategies for linked checkouts - 2014-11-30)
adds "--worktrees" to "git prune" without realizing that "git prune" is
for object database only. This patch moves the same functionality to a
new command "git worktree".

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
2015-06-29 08:48:44 -07:00
Jeff King
3115ee45c8 cat-file: sort and de-dup output of --batch-all-objects
The sorting we could probably live without, but printing
duplicates is just a hassle for the user, who must then
de-dup themselves (or risk a wrong answer if they are doing
something like counting objects with a particular property).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-26 09:24:42 -07:00
Junio C Hamano
b5496cbd22 Merge branch 'nd/diff-i-t-a'
* nd/diff-i-t-a:
  Revert "diff-lib.c: adjust position of i-t-a entries in diff"
2015-06-25 10:47:46 -07:00
Jeff King
067fbd4105 introduce "preciousObjects" repository extension
If this extension is used in a repository, then no
operations should run which may drop objects from the object
storage. This can be useful if you are sharing that storage
with other repositories whose refs you cannot see.

For instance, if you do:

  $ git clone -s parent child
  $ git -C parent config extensions.preciousObjects true
  $ git -C parent config core.repositoryformatversion 1

you now have additional safety when running git in the
parent repository. Prunes and repacks will bail with an
error, and `git gc` will skip those operations (it will
continue to pack refs and do other non-object operations).
Older versions of git, when run in the repository, will
fail on every operation.

Note that we do not set the preciousObjects extension by
default when doing a "clone -s", as doing so breaks
backwards compatibility. It is a decision the user should
make explicitly.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-24 17:09:35 -07:00
Junio C Hamano
712b351bd3 Merge branch 'jk/index-pack-reduce-recheck'
Disable "have we lost a race with competing repack?" check while
receiving a huge object transfer that runs index-pack.

* jk/index-pack-reduce-recheck:
  index-pack: avoid excessive re-reading of pack directory
2015-06-24 12:21:54 -07:00
Junio C Hamano
9d71c5f408 Merge branch 'mh/reporting-broken-refs-from-for-each-ref'
"git for-each-ref" reported "missing object" for 0{40} when it
encounters a broken ref.  The lack of object whose name is 0{40} is
not the problem; the ref being broken is.

* mh/reporting-broken-refs-from-for-each-ref:
  read_loose_refs(): treat NULL_SHA1 loose references as broken
  read_loose_refs(): simplify function logic
  for-each-ref: report broken references correctly
  t6301: new tests of for-each-ref error handling
2015-06-24 12:21:52 -07:00
Junio C Hamano
8f61ccf15d Merge branch 'mh/fsck-reflog-entries'
"git fsck" used to ignore missing or invalid objects recorded in reflog.

* mh/fsck-reflog-entries:
  fsck: report errors if reflog entries point at invalid objects
  fsck_handle_reflog_sha1(): new function
2015-06-24 12:21:48 -07:00
Junio C Hamano
20d16da5ca Merge branch 'qn/blame-show-email'
"git blame" learned blame.showEmail configuration variable.

* qn/blame-show-email:
  blame: add blame.showEmail configuration
2015-06-24 12:21:41 -07:00
Junio C Hamano
de04706e31 Merge branch 'jc/do-not-feed-tags-to-clear-commit-marks'
"git format-patch --ignore-if-upstream A..B" did not like to be fed
tags as boundary commits.

* jc/do-not-feed-tags-to-clear-commit-marks:
  format-patch: do not feed tags to clear_commit_marks()
2015-06-24 12:21:40 -07:00