The test script t4202-log.sh is already pretty long, and it is a good
idea to test --output with a more obscure option, anyway. So let's
test it in conjunction with line-log.

The most important part of this test, of course, is to ensure that the
file is not closed after writing the diff, but only at the very end
of the log output. That is the entire reason why the test tries to
generate a log that covers more than one commit.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Thanks to the diff option parsing, we already know about this option.
We just have to make use of it.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Earlier, we freopen()ed stdout in order to write patches to files.
That forced us to duplicate stdout (naming it "realstdout") because we
*still* wanted to be able to report the file names.

As we do not abuse stdout that way anymore, we no longer need to
duplicate stdout, either.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We just taught the relevant functions to respect the diffopt.file field,
to allow writing somewhere else than stdout. Let's make use of it.

Technically, we do not need to avoid that call in a builtin: we assume
that builtins (as opposed to library functions) are stand-alone programs
that may do with their (global) state. Yet, we want to be able to reuse
that code in properly lib-ified code, e.g. when converting scripts into
builtins.

Further, while we did not *have* to touch the cmd_show() and cmd_cherry()
code paths (because they do not want to write anywhere but stdout as of
yet), it just makes sense to be consistent, making it easier and safer to
move the code later.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The --color=auto handling is done by seeing if file descriptor 1
(the standard output) is connected to a terminal.  format-patch
used freopen() to reuse the standard output stream even when sending
its output to an on-disk file, and this check is appropriate.

In the next step, however, we will stop reusing "FILE *stdout", and
instead start using arbitrary file descriptor obtained by doing an
fopen(3) ourselves.  The check --color=auto does will become useless,
as we no longer are writing to the standard output stream.

But then, we do not need to guess to begin with. As argued in the commit
message of 7787570c (format-patch: ignore ui.color, 2011-09-13), we do not
allow the ui.color setting to affect format-patch's output. The only time,
therefore, that we allow color sequences to be written to the output files
is when the user specified the --color=always command-line option explicitly.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

This will be needed to avoid freopen() in `git format-patch`.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

When the caller overrides diffopt.file (which defaults to stdout),
the diff machinery already redirects its output, and the graph display
should also write to that file.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The diff machinery can optionally output to a file stream other than
stdout, by overriding diffopt.file. In such a case, the rest of the
log tree machinery should also write to that stream.

Currently, there is no user of the line level log that wants to
redirect output to a file. Therefore, one might argue that it is
superfluous to support that now. However, it is better to be
consistent now, rather than to face hard-to-debug problems later.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The diff options already know how to print the output anywhere else
than stdout. The same is needed for log output in general, e.g.
when writing patches to files in `git format-patch`. Let's allow
users to use log_tree_commit() *without* changing global state via
freopen().
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

We are about to teach the log-tree machinery to reuse the diffopt.file
field to output to a file stream other than stdout, in line with the
diff machinery already writing to diffopt.file.

However, we might want to write something after the diff in
log_tree_commit() (e.g. with the --show-linear-break option), therefore
we must not let the diff machinery close the file (as per
diffopt.close_file.

This means that log_tree_commit() itself must override the
diffopt.close_file flag and close the file, and if log_tree_commit() is
called in a loop, the caller is responsible to do the same.

Note: format-patch has an `--output-directory` option. Due to the fact
that format-patch's options are parsed first, and that the parse-options
machinery accepts uniquely abbreviated options, the diff options
`--output` (and `-o`) are shadowed. Therefore close_file is not set to 1
so that cmd_format_patch() does *not* need to handle the close_file flag
differently, even if it calls log_tree_commit() in a loop.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

"git show -W" (extend hunks to cover the entire function, delimited
by lines that match the "funcname" pattern) used to show the entire
file when a change added an entire function at the end of the file,
which has been fixed.

* rs/xdiff-hunk-with-func-line:
  xdiff: fix merging of appended hunk with -W
  grep: -W: don't extend context to trailing empty lines
  t7810: add test for grep -W and trailing empty context lines
  xdiff: don't trim common tail with -W
  xdiff: -W: don't include common trailing empty lines in context
  xdiff: ignore empty lines before added functions with -W
  xdiff: handle appended chunks better with -W
  xdiff: factor out match_func_rec()
  t4051: rewrite, add more tests

"git rev-list --count" whose walk-length is limited with "-n"
option did not work well with the counting optimized to look at the
bitmap index.

* jk/rev-list-count-with-bitmap:
  rev-list: disable bitmaps when "-n" is used with listing objects
  rev-list: "adjust" results of "--count --use-bitmap-index -n"

Update the funcname definition to support css files.

* wd/userdiff-css:
  userdiff: add built-in pattern for CSS

We usually call a function that clears the contents a data
structure X without freeing the structure itself clear_X(), and
call a function that does clear_X() and also frees it free_X().
free_pathspec() function has been renamed to clear_pathspec()
to avoid confusion.

* jc/clear-pathspec:
  pathspec: rename free_pathspec() to clear_pathspec()

"git upload-pack" command has been updated to use the parse-options
API.

* aq/upload-pack-use-parse-options:
  upload-pack.c: use parse-options API

"git worktree add" learned that '-' can be used as a short-hand for
"@{-1}", the previous branch.

* jg/dash-is-last-branch-in-worktree-add:
  worktree: allow "-" short-hand for @{-1} in add command

The commands in `git log` family take %C(auto) in a custom format
string.  This unconditionally turned the color on, ignoring
--no-color or with --color=auto when the output is not connected to
a tty; this was corrected to make the format truly behave as
"auto".

* et/pretty-format-c-auto:
  format_commit_message: honor `color=auto` for `%C(auto)`

An upstream project can make a recommendation to shallowly clone
some submodules in the .gitmodules file it ships.

* sb/submodule-recommend-shallowness:
  submodule update: learn `--[no-]recommend-shallow` option
  submodule-config: keep shallow recommendation around

Minor simplification.

* sb/submodule-misc-cleanups:
  submodule update: make use of the existing fetch_in_submodule function

When "git daemon" is run without --[init-]timeout specified, a
connection from a client that silently goes offline can hang around
for a long time, wasting resources.  The socket-level KEEPALIVE has
been enabled to allow the OS to notice such failed connections.

* ew/daemon-socket-keepalive:
  daemon: enable SO_KEEPALIVE for all sockets

"git pull --rebase --verify-signature" learned to warn the user
that "--verify-signature" is a no-op when rebasing.

* ah/no-verify-signature-with-pull-rebase:
  pull: warn on --verify-signatures with --rebase

"git fast-import" learned the same performance trick to avoid
creating too small a packfile as "git fetch" and "git push" have,
using *.unpackLimit configuration.

* ew/fast-import-unpack-limit:
  fast-import: invalidate pack_id references after loosening
  fast-import: implement unpack limit

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

l10n-2.9.0-rc0

* tag 'l10n-2.9.0-rc0' of git://github.com/git-l10n/git-po:
  l10n: ko.po: Update Korean translation
  l10n: ru.po: update Russian translation
  l10n: de.po: translate 104 new messages
  l10n: zh_CN: review for git v2.9.0 l10n round 1
  l10n: zh_CN: for git v2.9.0 l10n round 1
  l10n: pt_PT: update Portuguese translation
  l10n: pt_PT: update according to git-gui glossary
  l10n: pt_PT: merge git.pot file
  l10n: Updated Bulgarian translation of git (2597t,0f,0u)
  l10n: sv.po: Update Swedish translation (2597t0f0u)
  l10n: fr.po v2.9.0rnd1
  l10n: Updated Vietnamese translation (2597t)
  l10n: git.pot: v2.9.0 round 1 (104 new, 37 removed)
  l10n: fr.po Fixed grammar mistake

* 'russian-l10n' of https://github.com/DJm00n/git-po-ru:
  l10n: ru.po: update Russian translation

Signed-off-by: NDimitriy Ryazantcev <dimitriy.ryazantcev@gmail.com>

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

It turns out that the earlier effort to update the heuristics may
want to use a bit more time to mature.  Turn it off by default.

* jk/diff-compact-heuristic:
  diff: disable compaction heuristic for now

test fixes.

* jk/shell-portability:
  t5500 & t7403: lose bash-ism "local"
  test-lib: add in-shell "env" replacement

A test fix.

* jc/t2300-setup:
  t2300: run git-sh-setup in an environment that better mimics the real life

http://lkml.kernel.org/g/20160610075043.GA13411@sigill.intra.peff.net
reports that a change to add a new "function" with common ending
with the existing one at the end of the file is shown like this:

    def foo
      do_foo_stuff()

   +  common_ending()
   +end
   +
   +def bar
   +  do_bar_stuff()
   +
      common_ending()
    end

when the new heuristic is in use.  In reality, the change is to add
the blank line before "def bar" and everything below, which is what
the code without the new heuristic shows.

Disable the heuristics by default, and resurrect the documentation
for the option and the configuration variables, while clearly
marking the feature as still experimental.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Translate 104 new messages came from git.pot update in f517e50d
(l10n: git.pot: v2.9.0 round 1 (104 new, 37 removed)).
Signed-off-by: NRalf Thielow <ralf.thielow@gmail.com>

When -W is given we search the lines between the end of the current
context and the next change for a function line.  If there is none then
we merge those two hunks as they must be part of the same function.

If the next change is an appended chunk we abort the search early in
get_func_line(), however, because its line number is out of range.  Fix
that by searching from the end of the pre-image in that case instead.
Reported-by: NJunio C Hamano <gitster@pobox.com>
Signed-off-by: NRene Scharfe <l.s.r@web.de>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Signed-off-by: NRay Chen <oldsharp@gmail.com>
Signed-off-by: NJiang Xin <worldhello.net@gmail.com>

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* maint:
  Git 2.8.4

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

The "are we talking with TTY, doing an interactive session?"
detection has been updated to work better for "Git for Windows".

* kb/msys2-tty:
  mingw: make isatty() recognize MSYS2's pseudo terminals (/dev/pty*)