gitweb.git
Merge branch 'jk/asciidoc-markup-fix'Junio C Hamano Fri, 22 May 2015 19:41:50 +0000 (12:41 -0700)

Merge branch 'jk/asciidoc-markup-fix'

Various documentation mark-up fixes to make the output more
consistent in general and also make AsciiDoctor (an alternative
formatter) happier.

* jk/asciidoc-markup-fix:
doc: convert AsciiDoc {?foo} to ifdef::foo[]
doc: put example URLs and emails inside literal backticks
doc: drop backslash quoting of some curly braces
doc: convert \--option to --option
doc/add: reformat `--edit` option
doc: fix length of underlined section-title
doc: fix hanging "+"-continuation
doc: fix unquoted use of "{type}"
doc: fix misrendering due to `single quote'

Merge branch 'jk/stripspace-asciidoctor-fix'Junio C Hamano Fri, 22 May 2015 19:41:49 +0000 (12:41 -0700)

Merge branch 'jk/stripspace-asciidoctor-fix'

A literal block in the tutorial had lines with unequal lengths to
delimit it from the rest of the document, which choke GitHub's
AsciiDoc renderer.

* jk/stripspace-asciidoctor-fix:
doc: fix unmatched code fences in git-stripspace

Merge branch 'ja/tutorial-asciidoctor-fix'Junio C Hamano Fri, 22 May 2015 19:41:48 +0000 (12:41 -0700)

Merge branch 'ja/tutorial-asciidoctor-fix'

A literal block in the tutorial had lines with unequal lengths to
delimit it from the rest of the document, which choke GitHub's
AsciiDoc renderer.

* ja/tutorial-asciidoctor-fix:
doc: fix unmatched code fences

Merge branch 'sg/help-subcommands'Junio C Hamano Fri, 22 May 2015 19:41:47 +0000 (12:41 -0700)

Merge branch 'sg/help-subcommands'

A preparatory clean-up step.

* sg/help-subcommands:
command-list.txt: fix whitespace inconsistency

Merge branch 'ps/bundle-verify-arg'Junio C Hamano Fri, 22 May 2015 19:41:46 +0000 (12:41 -0700)

Merge branch 'ps/bundle-verify-arg'

"git bundle verify" did not diagnose extra parameters on the
command line.

* ps/bundle-verify-arg:
bundle: verify arguments more strictly

Merge branch 'ls/http-ssl-cipher-list'Junio C Hamano Fri, 22 May 2015 19:41:45 +0000 (12:41 -0700)

Merge branch 'ls/http-ssl-cipher-list'

Introduce http.<url>.SSLCipherList configuration variable to tweak
the list of cipher suite to be used with libcURL when talking with
https:// sites.

* ls/http-ssl-cipher-list:
http: add support for specifying an SSL cipher list

Merge branch 'dl/subtree-avoid-tricky-echo'Junio C Hamano Fri, 22 May 2015 19:41:45 +0000 (12:41 -0700)

Merge branch 'dl/subtree-avoid-tricky-echo'

"git subtree" script (in contrib/) used "echo -n" to produce
progress messages in a non-portable way.

* dl/subtree-avoid-tricky-echo:
contrib/subtree: portability fix for string printing

Merge branch 'jk/skip-http-tests-under-no-curl'Junio C Hamano Fri, 22 May 2015 19:41:44 +0000 (12:41 -0700)

Merge branch 'jk/skip-http-tests-under-no-curl'

Test clean-up.

* jk/skip-http-tests-under-no-curl:
tests: skip dav http-push tests under NO_EXPAT=NoThanks
t/lib-httpd.sh: skip tests if NO_CURL is defined

Merge branch 'dl/subtree-push-no-squash'Junio C Hamano Fri, 22 May 2015 19:41:43 +0000 (12:41 -0700)

Merge branch 'dl/subtree-push-no-squash'

"git subtree" script (in contrib/) does not have --squash option
when pushing, but the documentation and help text pretended as if
it did.

* dl/subtree-push-no-squash:
contrib/subtree: there's no push --squash

Merge branch 'sg/completion-omit-credential-helpers'Junio C Hamano Fri, 22 May 2015 19:41:42 +0000 (12:41 -0700)

Merge branch 'sg/completion-omit-credential-helpers'

The Git subcommand completion (in contrib/) listed credential
helpers among candidates, which is not something the end user would
invoke interatively.

* sg/completion-omit-credential-helpers:
completion: remove credential helpers from porcelain commands

Merge branch 'dl/branch-error-message'Junio C Hamano Fri, 22 May 2015 19:41:41 +0000 (12:41 -0700)

Merge branch 'dl/branch-error-message'

Error messages from "git branch" called remote-tracking branches as
"remote branches".

* dl/branch-error-message:
branch: do not call a "remote-tracking branch" a "remote branch"

Third batch for 2.5 cycleJunio C Hamano Tue, 19 May 2015 20:24:08 +0000 (13:24 -0700)

Third batch for 2.5 cycle

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

Merge branch 'sb/ref-lock-lose-lock-fd'Junio C Hamano Tue, 19 May 2015 20:17:59 +0000 (13:17 -0700)

Merge branch 'sb/ref-lock-lose-lock-fd'

The refs API uses ref_lock struct which had its own "int fd", even
though the same file descriptor was in the lock struct it contains.
Clean-up the code to lose this redundant field.

* sb/ref-lock-lose-lock-fd:
refs.c: remove lock_fd from struct ref_lock

Merge branch 'kn/cat-file-literally'Junio C Hamano Tue, 19 May 2015 20:17:58 +0000 (13:17 -0700)

Merge branch 'kn/cat-file-literally'

Add the "--allow-unknown-type" option to "cat-file" to allow
inspecting loose objects of an experimental or a broken type.

* kn/cat-file-literally:
t1006: add tests for git cat-file --allow-unknown-type
cat-file: teach cat-file a '--allow-unknown-type' option
cat-file: make the options mutually exclusive
sha1_file: support reading from a loose object of unknown type

Merge branch 'nd/dwim-wildcards-as-pathspecs'Junio C Hamano Tue, 19 May 2015 20:17:57 +0000 (13:17 -0700)

Merge branch 'nd/dwim-wildcards-as-pathspecs'

A heuristic to help the "git <cmd> <revs> <pathspec>" command line
convention to catch mistyped paths is to make sure all the non-rev
parameters in the later part of the command line are names of the
files in the working tree, but that means "git grep $str -- \*.c"
must always be disambiguated with "--", because nobody sane will
create a file whose name literally is asterisk-dot-see. Loosen the
heuristic to declare that with a wildcard string the user likely
meant to give us a pathspec.

* nd/dwim-wildcards-as-pathspecs:
pathspec: avoid the need of "--" when wildcard is used

Merge branch 'jc/merge'Junio C Hamano Tue, 19 May 2015 20:17:57 +0000 (13:17 -0700)

Merge branch 'jc/merge'

"git merge FETCH_HEAD" learned that the previous "git fetch" could
be to create an Octopus merge, i.e. recording multiple branches
that are not marked as "not-for-merge"; this allows us to lose an
old style invocation "git merge <msg> HEAD $commits..." in the
implementation of "git pull" script; the old style syntax can now
be deprecated.

* jc/merge:
merge: deprecate 'git merge <message> HEAD <commit>' syntax
merge: handle FETCH_HEAD internally
merge: decide if we auto-generate the message early in collect_parents()
merge: make collect_parents() auto-generate the merge message
merge: extract prepare_merge_message() logic out
merge: narrow scope of merge_names
merge: split reduce_parents() out of collect_parents()
merge: clarify collect_parents() logic
merge: small leakfix and code simplification
merge: do not check argc to determine number of remote heads
merge: clarify "pulling into void" special case
t5520: test pulling an octopus into an unborn branch
t5520: style fixes
merge: simplify code flow
merge: test the top-level merge driver

Merge branch 'ph/rebase-i-redo'Junio C Hamano Tue, 19 May 2015 20:17:56 +0000 (13:17 -0700)

Merge branch 'ph/rebase-i-redo'

"git rebase -i" moved the "current" command from "todo" to "done" a
bit too prematurely, losing a step when a "pick" did not even start.

* ph/rebase-i-redo:
rebase -i: redo tasks that die during cherry-pick

Merge branch 'jc/test-prereq-validate'Junio C Hamano Tue, 19 May 2015 20:17:55 +0000 (13:17 -0700)

Merge branch 'jc/test-prereq-validate'

Help us to find broken test script that splits the body part of the
test by mistaken use of wrong kind of quotes.

* jc/test-prereq-validate:
test: validate prerequistes syntax

Merge branch 'bc/connect-plink'Junio C Hamano Tue, 19 May 2015 20:17:54 +0000 (13:17 -0700)

Merge branch 'bc/connect-plink'

The connection initiation code for "ssh" transport tried to absorb
differences between the stock "ssh" and Putty-supplied "plink" and
its derivatives, but the logic to tell that we are using "plink"
variants were too loose and falsely triggered when "plink" appeared
anywhere in the path (e.g. "/home/me/bin/uplink/ssh").

* bc/connect-plink:
connect: improve check for plink to reduce false positives
t5601: fix quotation error leading to skipped tests
connect: simplify SSH connection code path

Merge branch 'jk/test-chain-lint'Junio C Hamano Tue, 19 May 2015 20:17:54 +0000 (13:17 -0700)

Merge branch 'jk/test-chain-lint'

Developer support to automatically detect broken &&-chain in the
test scripts is now turned on by default.

* jk/test-chain-lint:
test-lib: turn on GIT_TEST_CHAIN_LINT by default
t7502-commit.sh: fix a broken and-chain

Merge branch 'fg/document-commit-message-stripping'Junio C Hamano Tue, 19 May 2015 20:17:53 +0000 (13:17 -0700)

Merge branch 'fg/document-commit-message-stripping'

* fg/document-commit-message-stripping:
Documentation: clarify how "git commit" cleans up the edited log message

Merge branch 'jk/stash-require-clean-index'Junio C Hamano Tue, 19 May 2015 20:17:52 +0000 (13:17 -0700)

Merge branch 'jk/stash-require-clean-index'

"git stash pop/apply" forgot to make sure that not just the working
tree is clean but also the index is clean. The latter is important
as a stash application can conflict and the index will be used for
conflict resolution.

* jk/stash-require-clean-index:
stash: require a clean index to apply
t3903: avoid applying onto dirty index
t3903: stop hard-coding commit sha1s

Merge branch 'jk/git-no-more-argv0-path-munging'Junio C Hamano Tue, 19 May 2015 20:17:52 +0000 (13:17 -0700)

Merge branch 'jk/git-no-more-argv0-path-munging'

We have prepended $GIT_EXEC_PATH and the path "git" is installed in
(typically "/usr/bin") to $PATH when invoking subprograms and hooks
for almost eternity, but the original use case the latter tried to
support was semi-bogus (i.e. install git to /opt/foo/git and run it
without having /opt/foo on $PATH), and more importantly it has
become less and less relevant as Git grew more mainstream (i.e. the
users would _want_ to have it on their $PATH). Stop prepending the
path in which "git" is installed to users' $PATH, as that would
interfere the command search order people depend on (e.g. they may
not like versions of programs that are unrelated to Git in /usr/bin
and want to override them by having different ones in /usr/local/bin
and have the latter directory earlier in their $PATH).

* jk/git-no-more-argv0-path-munging:
stop putting argv[0] dirname at front of PATH

Merge branch 'jc/gitignore-precedence'Junio C Hamano Tue, 19 May 2015 20:17:50 +0000 (13:17 -0700)

Merge branch 'jc/gitignore-precedence'

core.excludesfile (defaulting to $XDG_HOME/git/ignore) is supposed
to be overridden by repository-specific .git/info/exclude file, but
the order was swapped from the beginning. This belatedly fixes it.

* jc/gitignore-precedence:
ignore: info/exclude should trump core.excludesfile

Merge branch 'nd/diff-i-t-a'Junio C Hamano Tue, 19 May 2015 20:17:49 +0000 (13:17 -0700)

Merge branch 'nd/diff-i-t-a'

After "git add -N", the path appeared in output of "git diff HEAD"
and "git diff --cached HEAD", leading "git status" to classify it
as "Changes to be committed". Such a path, however, is not yet to
be scheduled to be committed. "git diff" showed the change to the
path as modification, not as a "new file", in the header of its
output.

Treat such paths as "yet to be added to the index but Git already
know about them"; "git diff HEAD" and "git diff --cached HEAD"
should not talk about them, and "git diff" should show them as new
files yet to be added to the index.

* nd/diff-i-t-a:
diff-lib.c: adjust position of i-t-a entries in diff

doc: convert AsciiDoc {?foo} to ifdef::foo[]Jeff King Thu, 14 May 2015 04:34:48 +0000 (00:34 -0400)

doc: convert AsciiDoc {?foo} to ifdef::foo[]

The former seems to just be syntactic sugar for the latter.
And as it's sugar that AsciiDoctor doesn't understand, it
would be nice to avoid it. Since there are only two spots,
and the resulting source is not significantly harder to
read, it's worth doing.

Note that this does slightly affect the generated HTML (it
has an extra newline), but the rendered result for both HTML
and docbook should be the same (since the newline is not
syntactically significant there).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Sync with 2.4.1Junio C Hamano Wed, 13 May 2015 21:34:46 +0000 (14:34 -0700)

Sync with 2.4.1

* maint:
Git 2.4.1

Git 2.4.1 v2.4.1Junio C Hamano Wed, 13 May 2015 21:11:43 +0000 (14:11 -0700)

Git 2.4.1

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

Merge branch 'sb/line-log-plug-pairdiff-leak' into... Junio C Hamano Wed, 13 May 2015 21:05:56 +0000 (14:05 -0700)

Merge branch 'sb/line-log-plug-pairdiff-leak' into maint

* sb/line-log-plug-pairdiff-leak:
line-log.c: fix a memleak

Merge branch 'sb/test-bitmap-free-at-end' into maintJunio C Hamano Wed, 13 May 2015 21:05:55 +0000 (14:05 -0700)

Merge branch 'sb/test-bitmap-free-at-end' into maint

* sb/test-bitmap-free-at-end:
pack-bitmap.c: fix a memleak

Merge branch 'nd/t1509-chroot-test' into maintJunio C Hamano Wed, 13 May 2015 21:05:55 +0000 (14:05 -0700)

Merge branch 'nd/t1509-chroot-test' into maint

Correct test bitrot.

* nd/t1509-chroot-test:
t1509: update prepare script to be able to run t1509 in chroot again

Merge branch 'jk/type-from-string-gently' into maintJunio C Hamano Wed, 13 May 2015 21:05:54 +0000 (14:05 -0700)

Merge branch 'jk/type-from-string-gently' into maint

"git cat-file bl $blob" failed to barf even though there is no
object type that is "bl".

* jk/type-from-string-gently:
type_from_string_gently: make sure length matches

Merge branch 'ep/fix-test-lib-functions-report' into... Junio C Hamano Wed, 13 May 2015 21:05:52 +0000 (14:05 -0700)

Merge branch 'ep/fix-test-lib-functions-report' into maint

* ep/fix-test-lib-functions-report:
test-lib-functions.sh: fix the second argument to some helper functions

Merge branch 'cn/bom-in-gitignore' into maintJunio C Hamano Wed, 13 May 2015 21:05:51 +0000 (14:05 -0700)

Merge branch 'cn/bom-in-gitignore' into maint

Teach the codepaths that read .gitignore and .gitattributes files
that these files encoded in UTF-8 may have UTF-8 BOM marker at the
beginning; this makes it in line with what we do for configuration
files already.

* cn/bom-in-gitignore:
attr: skip UTF8 BOM at the beginning of the input file
config: use utf8_bom[] from utf.[ch] in git_parse_source()
utf8-bom: introduce skip_utf8_bom() helper
add_excludes_from_file: clarify the bom skipping logic
dir: allow a BOM at the beginning of exclude files

Merge branch 'jk/prune-mtime' into maintJunio C Hamano Wed, 13 May 2015 21:05:50 +0000 (14:05 -0700)

Merge branch 'jk/prune-mtime' into maint

Access to objects in repositories that borrow from another one on a
slow NFS server unnecessarily got more expensive due to recent code
becoming more cautious in a naive way not to lose objects to pruning.

* jk/prune-mtime:
sha1_file: only freshen packs once per run
sha1_file: freshen pack objects before loose
reachable: only mark local objects as recent

Merge branch 'jk/init-core-worktree-at-root' into maintJunio C Hamano Wed, 13 May 2015 21:05:49 +0000 (14:05 -0700)

Merge branch 'jk/init-core-worktree-at-root' into maint

We avoid setting core.worktree when the repository location is the
".git" directory directly at the top level of the working tree, but
the code misdetected the case in which the working tree is at the
root level of the filesystem (which arguably is a silly thing to
do, but still valid).

* jk/init-core-worktree-at-root:
init: don't set core.worktree when initializing /.git

doc: put example URLs and emails inside literal backticksJeff King Wed, 13 May 2015 05:06:21 +0000 (01:06 -0400)

doc: put example URLs and emails inside literal backticks

This makes sure that AsciiDoc does not turn them into links.
Regular AsciiDoc does not catch these cases, but AsciiDoctor
does treat them as links.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: drop backslash quoting of some curly bracesJeff King Wed, 13 May 2015 05:02:22 +0000 (01:02 -0400)

doc: drop backslash quoting of some curly braces

Text like "{foo}" triggers an AsciiDoc attribute; we have to
write "\{foo}" to suppress this. But when the "foo" is not a
syntactically valid attribute, we can skip the quoting. This
makes the source nicer to read, and looks better under
Asciidoctor. With AsciiDoc itself, this patch produces no
changes.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: convert \--option to --optionJeff King Wed, 13 May 2015 05:01:38 +0000 (01:01 -0400)

doc: convert \--option to --option

Older versions of AsciiDoc would convert the "--" in
"--option" into an emdash. According to 565e135
(Documentation: quote double-dash for AsciiDoc, 2011-06-29),
this is fixed in AsciiDoc 8.3.0. According to bf17126, we
don't support anything older than 8.4.1 anyway, so we no
longer need to worry about quoting.

Even though this does not change the output at all, there
are a few good reasons to drop the quoting:

1. It makes the source prettier to read.

2. We don't quote consistently, which may be confusing when
reading the source.

3. Asciidoctor does not like the quoting, and renders a
literal backslash.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc/add: reformat `--edit` optionJeff King Wed, 13 May 2015 04:58:51 +0000 (00:58 -0400)

doc/add: reformat `--edit` option

All of the other options in the list put short and long as
two separate headings.

We can also drop the backslashing of `--`. It isn't used
elsewhere and is unnecessary for modern asciidoc (plus it
confuses asciidoctor).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix length of underlined section-titleJeff King Wed, 13 May 2015 04:58:29 +0000 (00:58 -0400)

doc: fix length of underlined section-title

In AsciiDoc, it is OK to say:

this is my title
-------------------------

but AsciiDoctor is more strict. Let's match the underline to
the title (which also makes the source prettier to read).
The output from AsciiDoc is the same either way.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix hanging "+"-continuationJeff King Wed, 13 May 2015 04:58:16 +0000 (00:58 -0400)

doc: fix hanging "+"-continuation

In list content that wants to continue to a second
paragraph, the "+" continuation and subsequent paragraph
need to be left-aligned. Otherwise AsciiDoc seems to insert
only a linebreak.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix unquoted use of "{type}"Jeff King Wed, 13 May 2015 04:58:06 +0000 (00:58 -0400)

doc: fix unquoted use of "{type}"

Curly braces open an "attribute" in AsciiDoc; if there's no
such attribute, strange things may happen. In this case, the
unquoted "{type}" causes AsciiDoc to omit an entire line of
text from the output. We can fix it by putting the whole
phrase inside literal backticks (which also lets us get rid
of ugly backslash escaping).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix misrendering due to `single quote'Jeff King Wed, 13 May 2015 04:57:54 +0000 (00:57 -0400)

doc: fix misrendering due to `single quote'

AsciiDoc misparses some text that contains a `literal`
word followed by a fancy `single quote' word, and treats
everything from the start of the literal to the end of the
quote as a single-quoted phrase.

We can work around this by switching the latter to be a
literal, as well. In the first case, this is perhaps what
was intended anyway, as it makes us consistent with the the
earlier literals in the same paragraph. In the second, the
output is arguably better, as we will format our commit
references as <code> blocks.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix unmatched code fences in git-stripspaceJeff King Wed, 13 May 2015 02:15:56 +0000 (22:15 -0400)

doc: fix unmatched code fences in git-stripspace

The asciidoctor renderer is more picky than classic asciidoc,
and insists that the start and end of a code fence be the
same size.

Found with this hacky perl script:

foreach my $fn (@ARGV) {
open(my $fh, '<', $fn);
my ($fence, $fence_lineno, $prev);
while (<$fh>) {
chomp;
if (/^----+$/) {
if ($fence_lineno) {
if ($_ ne $fence) {
print "$fn:$fence_lineno:mismatched fence: ",
length($fence), " != ", length($_), "\n";
}
$fence_lineno = undef;
}
# hacky check to avoid title-underlining
elsif ($prev eq '' || $prev eq '+') {
$fence = $_;
$fence_lineno = $.;
}
}
$prev = $_;
}
}

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

doc: fix unmatched code fencesJean-Noel Avila Tue, 12 May 2015 17:23:20 +0000 (19:23 +0200)

doc: fix unmatched code fences

This mismatch upsets the renderer on git-scm.com.

Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Merge branch 'maint'Junio C Hamano Mon, 11 May 2015 21:39:39 +0000 (14:39 -0700)

Merge branch 'maint'

* maint:
Git 2.3.8

Sync with 2.3.8Junio C Hamano Mon, 11 May 2015 21:39:28 +0000 (14:39 -0700)

Sync with 2.3.8

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

Git 2.3.8 v2.3.8Junio C Hamano Mon, 11 May 2015 21:36:31 +0000 (14:36 -0700)

Git 2.3.8

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

Merge branch 'mm/usage-log-l-can-take-regex' into maint-2.3Junio C Hamano Mon, 11 May 2015 21:34:01 +0000 (14:34 -0700)

Merge branch 'mm/usage-log-l-can-take-regex' into maint-2.3

Documentation fix.

* mm/usage-log-l-can-take-regex:
log -L: improve error message on malformed argument
Documentation: change -L:<regex> to -L:<funcname>

Merge branch 'jc/diff-no-index-d-f' into maint-2.3Junio C Hamano Mon, 11 May 2015 21:34:00 +0000 (14:34 -0700)

Merge branch 'jc/diff-no-index-d-f' into maint-2.3

The usual "git diff" when seeing a file turning into a directory
showed a patchset to remove the file and create all files in the
directory, but "git diff --no-index" simply refused to work. Also,
when asked to compare a file and a directory, imitate POSIX "diff"
and compare the file with the file with the same name in the
directory, instead of refusing to run.

* jc/diff-no-index-d-f:
diff-no-index: align D/F handling with that of normal Git
diff-no-index: DWIM "diff D F" into "diff D/F F"

Merge branch 'oh/fix-config-default-user-name-section... Junio C Hamano Mon, 11 May 2015 21:33:59 +0000 (14:33 -0700)

Merge branch 'oh/fix-config-default-user-name-section' into maint-2.3

The default $HOME/.gitconfig file created upon "git config --global"
that edits it had incorrectly spelled user.name and user.email
entries in it.

* oh/fix-config-default-user-name-section:
config: fix settings in default_user_config template

Merge branch 'jc/epochtime-wo-tz' into maint-2.3Junio C Hamano Mon, 11 May 2015 21:33:58 +0000 (14:33 -0700)

Merge branch 'jc/epochtime-wo-tz' into maint-2.3

"git commit --date=now" or anything that relies on approxidate lost
the daylight-saving-time offset.

* jc/epochtime-wo-tz:
parse_date_basic(): let the system handle DST conversion
parse_date_basic(): return early when given a bogus timestamp

Second batch for 2.5 cycleJunio C Hamano Mon, 11 May 2015 21:31:28 +0000 (14:31 -0700)

Second batch for 2.5 cycle

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

Merge branch 'pt/xdg-config-path'Junio C Hamano Mon, 11 May 2015 21:24:01 +0000 (14:24 -0700)

Merge branch 'pt/xdg-config-path'

Code clean-up for xdg configuration path support.

* pt/xdg-config-path:
path.c: remove home_config_paths()
git-config: replace use of home_config_paths()
git-commit: replace use of home_config_paths()
credential-store.c: replace home_config_paths() with xdg_config_home()
dir.c: replace home_config_paths() with xdg_config_home()
attr.c: replace home_config_paths() with xdg_config_home()
path.c: implement xdg_config_home()

Merge branch 'ep/do-not-feed-a-pointer-to-array-size'Junio C Hamano Mon, 11 May 2015 21:24:00 +0000 (14:24 -0700)

Merge branch 'ep/do-not-feed-a-pointer-to-array-size'

Catch a programmer mistake to feed a pointer not an array to
ARRAY_SIZE() macro, by using a couple of GCC extensions.

* ep/do-not-feed-a-pointer-to-array-size:
git-compat-util.h: implement a different ARRAY_SIZE macro for for safely deriving the size of array

Merge branch 'jc/hash-object'Junio C Hamano Mon, 11 May 2015 21:23:59 +0000 (14:23 -0700)

Merge branch 'jc/hash-object'

"hash-object --literally" introduced in v2.2 was not prepared to
take a really long object type name.

* jc/hash-object:
write_sha1_file(): do not use a separate sha1[] array
t1007: add hash-object --literally tests
hash-object --literally: fix buffer overrun with extra-long object type
git-hash-object.txt: document --literally option

Merge branch 'sb/prefix-path-free-results'Junio C Hamano Mon, 11 May 2015 21:23:57 +0000 (14:23 -0700)

Merge branch 'sb/prefix-path-free-results'

Code clean-up (not a leak-fix).

* sb/prefix-path-free-results:
prefix_path(): unconditionally free results in the callers

Merge branch 'sg/completion-no-redundant-all-command... Junio C Hamano Mon, 11 May 2015 21:23:57 +0000 (14:23 -0700)

Merge branch 'sg/completion-no-redundant-all-command-list'

Code simplification.

* sg/completion-no-redundant-all-command-list:
completion: remove redundant __git_compute_all_commands() call

Merge branch 'sg/complete-decorate-full-not-long'Junio C Hamano Mon, 11 May 2015 21:23:55 +0000 (14:23 -0700)

Merge branch 'sg/complete-decorate-full-not-long'

The completion for "log --decorate=" parameter value was incorrect.

* sg/complete-decorate-full-not-long:
completion: fix and update 'git log --decorate=' options

Merge branch 'jk/filter-branch-use-of-sed-on-incomplete... Junio C Hamano Mon, 11 May 2015 21:23:54 +0000 (14:23 -0700)

Merge branch 'jk/filter-branch-use-of-sed-on-incomplete-line'

"filter-branch" corrupted commit log message that ends with an
incomplete line on platforms with some "sed" implementations that
munge such a line. Work it around by avoiding to use "sed".

* jk/filter-branch-use-of-sed-on-incomplete-line:
filter-branch: avoid passing commit message through sed

Merge branch 'jc/daemon-no-ipv6-for-2.4.1'Junio C Hamano Mon, 11 May 2015 21:23:53 +0000 (14:23 -0700)

Merge branch 'jc/daemon-no-ipv6-for-2.4.1'

"git daemon" fails to build from the source under NO_IPV6
configuration (regression in 2.4).

* jc/daemon-no-ipv6-for-2.4.1:
daemon: unbreak NO_IPV6 build regression

Merge branch 'jn/clean-use-error-not-fprintf-on-stderr'Junio C Hamano Mon, 11 May 2015 21:23:52 +0000 (14:23 -0700)

Merge branch 'jn/clean-use-error-not-fprintf-on-stderr'

Some error messages in "git config" were emitted without calling
the usual error() facility.

* jn/clean-use-error-not-fprintf-on-stderr:
config: use error() instead of fprintf(stderr, ...)

Merge branch 'tb/blame-resurrect-convert-to-git'Junio C Hamano Mon, 11 May 2015 21:23:52 +0000 (14:23 -0700)

Merge branch 'tb/blame-resurrect-convert-to-git'

Some time ago, "git blame" (incorrectly) lost the convert_to_git()
call when synthesizing a fake "tip" commit that represents the
state in the working tree, which broke folks who record the history
with LF line ending to make their project portabile across
platforms while terminating lines in their working tree files with
CRLF for their platform.

* tb/blame-resurrect-convert-to-git:
blame: CRLF in the working tree and LF in the repo

Merge branch 'va/fix-git-p4-tests'Junio C Hamano Mon, 11 May 2015 21:23:51 +0000 (14:23 -0700)

Merge branch 'va/fix-git-p4-tests'

* va/fix-git-p4-tests:
git-p4: t9814: prevent --chain-lint failure

Merge branch 'ld/p4-case-fold'Junio C Hamano Mon, 11 May 2015 21:23:50 +0000 (14:23 -0700)

Merge branch 'ld/p4-case-fold'

* ld/p4-case-fold:
git-p4: add failing tests for case-folding p4d

Merge branch 'jk/rebase-quiet-noop'Junio C Hamano Mon, 11 May 2015 21:23:49 +0000 (14:23 -0700)

Merge branch 'jk/rebase-quiet-noop'

"git rebase --quiet" was not quite quiet when there is nothing to
do.

* jk/rebase-quiet-noop:
rebase: silence "git checkout" for noop rebase

Merge branch 'va/p4-client-path'Junio C Hamano Mon, 11 May 2015 21:23:48 +0000 (14:23 -0700)

Merge branch 'va/p4-client-path'

git p4 attempts to better handle branches in Perforce.

* va/p4-client-path:
git-p4: improve client path detection when branches are used
t9801: check git-p4's branch detection with client spec enabled

Merge branch 'mm/add-p-split-error'Junio C Hamano Mon, 11 May 2015 21:23:47 +0000 (14:23 -0700)

Merge branch 'mm/add-p-split-error'

When "add--interactive" splits a hunk into two overlapping hunks
and then let the user choose only one, it sometimes feeds an
incorrect patch text to "git apply". Add tests to demonstrate
this.

I have a slight suspicion that this may be $gmane/87202 coming back
and biting us (I seem to have said "let's run with this and see
what happens" back then).

* mm/add-p-split-error:
stash -p: demonstrate failure of split with mixed y/n
t3904-stash-patch: factor PERL prereq at the top of the file
t3904-stash-patch: fix test description
add -p: demonstrate failure when running 'edit' after a split
t3701-add-interactive: simplify code

Merge branch 'tb/t0027-crlf'Junio C Hamano Mon, 11 May 2015 21:23:47 +0000 (14:23 -0700)

Merge branch 'tb/t0027-crlf'

More line-ending tests.

* tb/t0027-crlf:
t0027: Add repoMIX and LF_nul
t0027: support NATIVE_CRLF platforms
t0027: cleanup: rename functions; avoid non-leading TABs

Merge branch 'ls/p4-changes-block-size'Junio C Hamano Mon, 11 May 2015 21:23:46 +0000 (14:23 -0700)

Merge branch 'ls/p4-changes-block-size'

"git p4" learned "--changes-block-size <n>" to read the changes in
chunks from Perforce, instead of making one call to "p4 changes"
that may trigger "too many rows scanned" error from Perforce.

* ls/p4-changes-block-size:
git-p4: use -m when running p4 changes

Merge branch 'jc/plug-fmt-merge-msg-leak'Junio C Hamano Mon, 11 May 2015 21:23:45 +0000 (14:23 -0700)

Merge branch 'jc/plug-fmt-merge-msg-leak'

* jc/plug-fmt-merge-msg-leak:
fmt-merge-msg: plug small leak of commit buffer

Merge branch 'nd/slim-index-pack-memory-usage'Junio C Hamano Mon, 11 May 2015 21:23:44 +0000 (14:23 -0700)

Merge branch 'nd/slim-index-pack-memory-usage'

Memory usage of "git index-pack" has been trimmed by tens of
per-cent.

* nd/slim-index-pack-memory-usage:
index-pack: kill union delta_base to save memory
index-pack: reduce object_entry size to save memory

Merge branch 'jk/still-interesting'Junio C Hamano Mon, 11 May 2015 21:23:43 +0000 (14:23 -0700)

Merge branch 'jk/still-interesting'

"git rev-list --objects $old --not --all" to see if everything that
is reachable from $old is already connected to the existing refs
was very inefficient.

* jk/still-interesting:
limit_list: avoid quadratic behavior from still_interesting

Merge branch 'jk/reading-packed-refs'Junio C Hamano Mon, 11 May 2015 21:23:42 +0000 (14:23 -0700)

Merge branch 'jk/reading-packed-refs'

An earlier rewrite to use strbuf_getwholeline() instead of fgets(3)
to read packed-refs file revealed that the former is unacceptably
inefficient.

* jk/reading-packed-refs:
t1430: add another refs-escape test
read_packed_refs: avoid double-checking sane refs
strbuf_getwholeline: use getdelim if it is available
strbuf_getwholeline: avoid calling strbuf_grow
strbuf_addch: avoid calling strbuf_grow
config: use getc_unlocked when reading from file
strbuf_getwholeline: use getc_unlocked
git-compat-util: add fallbacks for unlocked stdio
strbuf_getwholeline: use getc macro

Merge branch 'lm/squelch-bg-progress'Junio C Hamano Mon, 11 May 2015 21:23:42 +0000 (14:23 -0700)

Merge branch 'lm/squelch-bg-progress'

Many long-running operations show progress eye-candy, even when
they are later backgrounded. Hide the eye-candy when the process
is sent to the background instead.

* lm/squelch-bg-progress:
compat/mingw: stubs for getpgid() and tcgetpgrp()
progress: no progress in background

Merge branch 'jk/sha1-file-reduce-useless-warnings'Junio C Hamano Mon, 11 May 2015 21:23:40 +0000 (14:23 -0700)

Merge branch 'jk/sha1-file-reduce-useless-warnings'

* jk/sha1-file-reduce-useless-warnings:
sha1_file: squelch "packfile cannot be accessed" warnings

Merge branch 'nd/multiple-work-trees'Junio C Hamano Mon, 11 May 2015 21:23:39 +0000 (14:23 -0700)

Merge branch 'nd/multiple-work-trees'

A replacement for contrib/workdir/git-new-workdir that does not
rely on symbolic links and make sharing of objects and refs safer
by making the borrowee and borrowers aware of each other.

* nd/multiple-work-trees: (41 commits)
prune --worktrees: fix expire vs worktree existence condition
t1501: fix test with split index
t2026: fix broken &&-chain
t2026 needs procondition SANITY
git-checkout.txt: a note about multiple checkout support for submodules
checkout: add --ignore-other-wortrees
checkout: pass whole struct to parse_branchname_arg instead of individual flags
git-common-dir: make "modules/" per-working-directory directory
checkout: do not fail if target is an empty directory
t2025: add a test to make sure grafts is working from a linked checkout
checkout: don't require a work tree when checking out into a new one
git_path(): keep "info/sparse-checkout" per work-tree
count-objects: report unused files in $GIT_DIR/worktrees/...
gc: support prune --worktrees
gc: factor out gc.pruneexpire parsing code
gc: style change -- no SP before closing parenthesis
checkout: clean up half-prepared directories in --to mode
checkout: reject if the branch is already checked out elsewhere
prune: strategies for linked checkouts
checkout: support checking out into a new working directory
...

Merge branch 'pt/credential-xdg'Junio C Hamano Mon, 11 May 2015 21:23:38 +0000 (14:23 -0700)

Merge branch 'pt/credential-xdg'

Tweak the sample "store" backend of the credential helper to honor
XDG configuration file locations when specified.

* pt/credential-xdg:
t0302: "unreadable" test needs POSIXPERM
t0302: test credential-store support for XDG_CONFIG_HOME
git-credential-store: support XDG_CONFIG_HOME
git-credential-store: support multiple credential files

refs.c: remove lock_fd from struct ref_lockStefan Beller Thu, 16 Apr 2015 23:17:37 +0000 (16:17 -0700)

refs.c: remove lock_fd from struct ref_lock

The 'lock_fd' is the same as 'lk->fd'. No need to store it twice so remove
it.

No functional changes intended.

Signed-off-by: Stefan Beller <sbeller@google.com>
Reviewed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

command-list.txt: fix whitespace inconsistencySébastien Guimmara Fri, 8 May 2015 19:29:35 +0000 (21:29 +0200)

command-list.txt: fix whitespace inconsistency

The overwhelming majority of lines were single space aligned,
except a few ones aligned by tabs. Fix inconsistency by using
single space everywhere.

Signed-off-by: Sébastien Guimmara <sebastien.guimmara@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: portability fix for string printingDanny Lin Fri, 8 May 2015 00:56:59 +0000 (08:56 +0800)

contrib/subtree: portability fix for string printing

'echo -n' is not portable, but this script used it as a way to give
a string followed by a carriage return for progress messages.
Introduce a new helper shell function "progress" and use printf as a
more portable way to do this. As a side effect, this makes it
unnecessary to have a raw CR in our source, which can be munged in
some shells. For example, MsysGit trims CR before executing a shell
script file in order to make it work right on Windows even if it
uses CRLF as linefeeds.

While at it, replace "echo" using printf in debug() and say() to
eliminate the temptation of reintroducing the same bug.

Signed-off-by: Danny Lin <danny0838@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http: add support for specifying an SSL cipher listLars Kellogg-Stedman Fri, 8 May 2015 13:22:15 +0000 (09:22 -0400)

http: add support for specifying an SSL cipher list

Teach git about a new option, "http.sslCipherList", which permits one to
specify a list of ciphers to use when negotiating SSL connections. The
setting can be overwridden by the GIT_SSL_CIPHER_LIST environment
variable.

Signed-off-by: Lars Kellogg-Stedman <lars@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

bundle: verify arguments more strictlyPatrick Steinhardt Fri, 8 May 2015 08:02:00 +0000 (10:02 +0200)

bundle: verify arguments more strictly

The `verify` and `create` subcommands of the bundle builtin do
not properly verify the command line arguments that have been
passed in. While the `verify` subcommand accepts an arbitrary
amount of ignored arguments the `create` subcommand does not
complain about being passed too few arguments, resulting in a
bogus call to `git rev-list`. Fix these errors by verifying that
the correct amount of arguments has been passed in.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/subtree: there's no push --squashDanny Lin Thu, 7 May 2015 07:52:33 +0000 (15:52 +0800)

contrib/subtree: there's no push --squash

The documentation says that --squash is for 'add', 'merge',
'pull' and 'push', while --squash actually doesn't change
the behavior of 'push'. Correct the documentation.

Signed-off-by: Danny Lin <danny0838@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

tests: skip dav http-push tests under NO_EXPAT=NoThanksJunio C Hamano Thu, 7 May 2015 16:06:14 +0000 (09:06 -0700)

tests: skip dav http-push tests under NO_EXPAT=NoThanks

When built with NO_EXPAT=NoThanks, we will not have a working http-push
over webdav.

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

t/lib-httpd.sh: skip tests if NO_CURL is definedJeff King Wed, 6 May 2015 17:42:29 +0000 (13:42 -0400)

t/lib-httpd.sh: skip tests if NO_CURL is defined

If we built git without curl, we can't actually test against
an http server. In fact, all of the test scripts which
include lib-httpd.sh already perform this check, with one
exception: t5540. For those scripts, this is a noop, and for
t5540, this is a bugfix (it used to fail when built with
NO_CURL, though it could go unnoticed if you had a stale
git-remote-https in your build directory).

Noticed-by: Junio C Hamano <junio@pobox.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

completion: remove credential helpers from porcelain... SZEDER Gábor Tue, 5 May 2015 16:33:13 +0000 (18:33 +0200)

completion: remove credential helpers from porcelain commands

Don't offer the "main" 'git credential' command or any of the credential
helpers from contrib/credential/ when completing git commands.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t1006: add tests for git cat-file --allow-unknown-typeKarthik Nayak Sun, 3 May 2015 14:30:02 +0000 (20:00 +0530)

t1006: add tests for git cat-file --allow-unknown-type

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cat-file: teach cat-file a '--allow-unknown-type' optionKarthik Nayak Sun, 3 May 2015 14:30:01 +0000 (20:00 +0530)

cat-file: teach cat-file a '--allow-unknown-type' option

'git cat-file' throws an error while trying to print the type or
size of a broken/corrupt object. This is because these objects are
usually of unknown types.

Teach git cat-file a '--allow-unknown-type' option where it prints
the type or size of a broken/corrupt object without throwing
an error.

Modify '-t' and '-s' options to call sha1_object_info_extended()
directly to support the '--allow-unknown-type' option.

Add documentation for 'cat-file --allow-unknown-type'.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
cat-file: add documentation for '--allow-unknown-type' option.

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cat-file: make the options mutually exclusiveKarthik Nayak Sun, 3 May 2015 14:30:00 +0000 (20:00 +0530)

cat-file: make the options mutually exclusive

We only parse the options if 2 or 3 arguments are specified.
Update 'struct option options[]' to use OPT_CMDMODE rather than
OPT_SET_INT to allow only one mutually exclusive option and avoid the
need for checking number of arguments. This was written by Junio C Hamano,
tested by me.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

sha1_file: support reading from a loose object of unkno... Karthik Nayak Sun, 3 May 2015 14:29:59 +0000 (19:59 +0530)

sha1_file: support reading from a loose object of unknown type

Update sha1_loose_object_info() to optionally allow it to read
from a loose object file of unknown/bogus type; as the function
usually returns the type of the object it read in the form of enum
for known types, add an optional "typename" field to receive the
name of the type in textual form and a flag to indicate the reading
of a loose object file of unknown/bogus type.

Add parse_sha1_header_extended() which acts as a wrapper around
parse_sha1_header() allowing more information to be obtained.

Add unpack_sha1_header_to_strbuf() to unpack sha1 headers of
unknown/corrupt objects which have a unknown sha1 header size to
a strbuf structure. This was written by Junio C Hamano but tested
by me.

Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Hepled-by: Jeff King <peff@peff.net>
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

branch: do not call a "remote-tracking branch" a "remot... Danny Lin Wed, 6 May 2015 19:01:55 +0000 (03:01 +0800)

branch: do not call a "remote-tracking branch" a "remote branch"

"git branch -r -d" mentions "delete remote branch", which should be
"remote-tracking branch".

Signed-off-by: Danny Lin <danny0838@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

path.c: remove home_config_paths()Paul Tan Wed, 6 May 2015 08:01:04 +0000 (16:01 +0800)

path.c: remove home_config_paths()

home_config_paths() combines distinct functionality already implemented
by expand_user_path() and xdg_config_home(), and it also hard-codes the
path ~/.gitconfig, which makes it unsuitable to use for other home
config file paths. Since its use will just add unnecessary complexity to
the code, remove it.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-config: replace use of home_config_paths()Paul Tan Wed, 6 May 2015 08:01:03 +0000 (16:01 +0800)

git-config: replace use of home_config_paths()

Since home_config_paths() combines distinct functionality already
implemented by expand_user_path() and xdg_config_home(), and hides the
home config file path ~/.gitconfig. Make the code more explicit by
replacing the use of home_config_paths() with expand_user_path() and
xdg_config_home().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-commit: replace use of home_config_paths()Paul Tan Wed, 6 May 2015 08:01:02 +0000 (16:01 +0800)

git-commit: replace use of home_config_paths()

Since home_config_paths() combines two distinct functionality already
implemented by expand_user_path() and xdg_config_home(), and hides the
home config file path ~/.gitconfig. Make the code more explicit by
replacing the use of home_config_paths() with expand_user_path() and
xdg_config_home().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

credential-store.c: replace home_config_paths() with... Paul Tan Wed, 6 May 2015 08:01:01 +0000 (16:01 +0800)

credential-store.c: replace home_config_paths() with xdg_config_home()

Since only the xdg credentials file path is required, and
home_config_paths() is unable to construct the path ~/.git-credentials,
simplify the code by replacing home_config_paths() with
xdg_config_home().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

dir.c: replace home_config_paths() with xdg_config_home()Paul Tan Wed, 6 May 2015 08:01:00 +0000 (16:01 +0800)

dir.c: replace home_config_paths() with xdg_config_home()

Since only the xdg excludes file path is required, simplify the code by
replacing use of home_config_paths() with xdg_config_home().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

attr.c: replace home_config_paths() with xdg_config_home()Paul Tan Wed, 6 May 2015 08:00:59 +0000 (16:00 +0800)

attr.c: replace home_config_paths() with xdg_config_home()

Since only the xdg attributes file path is required, simplify the code
by using xdg_config_home() instead of home_config_paths().

Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

path.c: implement xdg_config_home()Paul Tan Tue, 21 Apr 2015 04:06:27 +0000 (12:06 +0800)

path.c: implement xdg_config_home()

The XDG base dir spec[1] specifies that configuration files be stored in
a subdirectory in $XDG_CONFIG_HOME. To construct such a configuration
file path, home_config_paths() can be used. However, home_config_paths()
combines distinct functionality:

1. Retrieve the home git config file path ~/.gitconfig

2. Construct the XDG config path of the file specified by `file`.

This function was introduced in commit 21cf3227 ("read (but not write)
from $XDG_CONFIG_HOME/git/config file"). While the intention of the
function was to allow the home directory configuration file path and the
xdg directory configuration file path to be retrieved with one function
call, the hard-coding of the path ~/.gitconfig prevents it from being
used for other configuration files. Furthermore, retrieving a file path
relative to the user's home directory can be done with
expand_user_path(). Hence, it can be seen that home_config_paths()
introduces unnecessary complexity, especially if a user just wants to
retrieve the xdg config file path.

As such, implement a simpler function xdg_config_home() for constructing
the XDG base dir spec configuration file path. This function, together
with expand_user_path(), can replace all uses of home_config_paths().

[1] http://standards.freedesktop.org/basedir-spec/basedir-spec-0.7.html

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>