Commit Graph

12910 Commits

Author SHA1 Message Date
Jonathan Tan
8ba18e6fa4 http: support omitting data from traces
GIT_TRACE_CURL provides a way to debug what is being sent and received
over HTTP, with automatic redaction of sensitive information. But it
also logs data transmissions, which significantly increases the log file
size, sometimes unnecessarily. Add an option "GIT_TRACE_CURL_NO_DATA" to
allow the user to omit such data transmissions.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 13:06:57 -08:00
Jonathan Tan
83411783c3 http: support cookie redaction when tracing
When using GIT_TRACE_CURL, Git already redacts the "Authorization:" and
"Proxy-Authorization:" HTTP headers. Extend this redaction to a
user-specified list of cookies, specified through the
"GIT_REDACT_COOKIES" environment variable.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-19 13:06:50 -08:00
Junio C Hamano
91ec08a078 Merge branch 'js/test-with-ws-in-path'
Hot fix to a test.

* js/test-with-ws-in-path:
  t3900: add some more quotes
2018-01-11 13:16:36 -08:00
Beat Bolli
36a6f49cc3 t3900: add some more quotes
In 89a70b80 ("t0302 & t3900: add forgotten quotes", 2018-01-03), quotes
were added to protect against spaces in $HOME. In the test_when_finished
command, two files are deleted which must be quoted individually.

[jc: with \$HOME in the test_when_finished command quoted, as
pointed out by j6t].

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-10 15:07:26 -08:00
Junio C Hamano
fac910641a Merge branch 'js/perl-path-workaround-in-tests'
* js/perl-path-workaround-in-tests:
  mingw: handle GITPERLLIB in t0021 in a Windows-compatible way
2018-01-10 14:01:31 -08:00
Junio C Hamano
a466ef018e Merge branch 'ew/empty-merge-with-dirty-index'
"git merge -s recursive" did not correctly abort when the index is
dirty, if the merged tree happened to be the same as the current
HEAD, which has been fixed.

* ew/empty-merge-with-dirty-index:
  merge-recursive: do not look at the index during recursive merge
2018-01-10 14:01:25 -08:00
Junio C Hamano
bc4efaf103 Merge branch 'js/fix-merge-arg-quoting-in-rebase-p'
"git rebase -p -X<option>" did not propagate the option properly
down to underlying merge strategy backend.

* js/fix-merge-arg-quoting-in-rebase-p:
  rebase -p: fix quoting when calling `git merge`
2018-01-10 14:01:24 -08:00
Johannes Schindelin
3306f6524d mingw: handle GITPERLLIB in t0021 in a Windows-compatible way
Git's assumption that all path lists are colon-separated is not only
wrong on Windows, it is not even an assumption that is compatible with
POSIX.

In the interest of time, let's not try to fix this properly but simply
work around the obvious breakage on Windows, where the MSYS2 Bash used
by Git for Windows to interpret the Git's Unix shell scripts will
automagically convert path lists in the environment to
semicolon-separated lists of Windows paths (with drive letter and the
corresponding colon and all that jazz).

In other words, we simply look whether there is a semicolon in
GITPERLLIB and split by semicolons if found instead of colons. This is
not fool-proof, of course, as the path list could consist of a single
path. But that is not the case in Git for Windows' test suite, there are
always two paths in GITPERLLIB.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-10 14:00:54 -08:00
Junio C Hamano
4e51984e82 Merge branch 'bw/protocol-v1'
Test fix for a topic already in 'master'.

* bw/protocol-v1:
  http: fix v1 protocol tests with apache httpd < 2.4
2018-01-09 14:32:56 -08:00
Junio C Hamano
d702d5c5bd Merge branch 'js/test-with-ws-in-path'
Test fixes.

* js/test-with-ws-in-path:
  t0302 & t3900: add forgotten quotes
  Allow the test suite to pass in a directory whose name contains spaces
2018-01-09 14:32:55 -08:00
Junio C Hamano
5b1c54ac99 Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index
* ew/empty-merge-with-dirty-index-maint:
  merge-recursive: do not look at the index during recursive merge
2018-01-09 10:41:37 -08:00
Junio C Hamano
f309e8e768 merge-recursive: do not look at the index during recursive merge
When merging another branch into ours, if their tree is the same as
the common ancestor's, we can declare that our tree represents the
result of three-way merge.  In such a case, the recursive merge
backend incorrectly used to create a commit out of our index, even
when the index has changes.

A recent fix attempted to prevent this by adding a comparison
between "our" tree and the index, but forgot that this check must be
restricted only to the outermost merge.  Inner merges performed by
the recursive backend across merge bases are by definition made from
scratch without having any local changes added to the index.  The
call to index_has_changes() during an inner merge is working on the
index that has no relation to the merge being performed, preventing
legitimate merges from getting carried out.

Fix it by limiting the check to the outermost merge.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-09 10:39:30 -08:00
Junio C Hamano
bc27a2e2fc Merge branch 'jh/memihash-opt'
Squelch compiler warning.

* jh/memihash-opt:
  t/helper/test-lazy-name-hash: fix compilation
2018-01-05 13:28:11 -08:00
Junio C Hamano
e82bbcbf60 Merge branch 'tb/test-lint-wc-l'
Test update.

* tb/test-lint-wc-l:
  check-non-portable-shell.pl: `wc -l` may have leading WS
2018-01-05 13:28:11 -08:00
Junio C Hamano
a778ba1c71 Merge branch 'ld/p4-multiple-shelves'
"git p4" update.

* ld/p4-multiple-shelves:
  git-p4: update multiple shelved change lists
2018-01-05 13:28:10 -08:00
Junio C Hamano
843d94b3cd Merge branch 'ew/empty-merge-with-dirty-index'
"git merge -s recursive" did not correctly abort when the index is
dirty, if the merged tree happened to be the same as the current
HEAD, which has been fixed.

* ew/empty-merge-with-dirty-index:
  merge-recursive: avoid incorporating uncommitted changes in a merge
  move index_has_changes() from builtin/am.c to merge.c for reuse
  t6044: recursive can silently incorporate dirty changes in a merge
2018-01-05 13:28:09 -08:00
Junio C Hamano
07b747d324 Merge branch 'jk/test-suite-tracing'
Assorted fixes around running tests with "-x" tracing option.

* jk/test-suite-tracing:
  t/Makefile: introduce TEST_SHELL_PATH
  test-lib: make "-x" work with "--verbose-log"
  t5615: avoid re-using descriptor 4
  test-lib: silence "-x" cleanup under bash
2018-01-05 13:28:09 -08:00
Johannes Schindelin
dd6fb0053c rebase -p: fix quoting when calling git merge
It has been reported that strategy arguments are not passed to `git
merge` correctly when rebasing interactively, preserving merges.

The reason is that the strategy arguments are already quoted, and then
quoted again.

This fixes https://github.com/git-for-windows/git/issues/1321

Original-patch-by: Kim Gybels <kgybels@infogroep.be>
Also-reported-by: Matwey V. Kornilov <matwey.kornilov@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-05 12:26:01 -08:00
Todd Zullinger
a812952aab http: fix v1 protocol tests with apache httpd < 2.4
The apache config used by tests was updated to use the SetEnvIf
directive to set the Git-Protocol header in 19113a26b6 ("http: tell
server that the client understands v1", 2017-10-16).

Setting the Git-Protocol header is restricted to httpd >= 2.4, but
mod_setenvif and the SetEnvIf directive work with lower versions, at
least as far back as 2.0, according to the httpd documentation:

    https://httpd.apache.org/docs/2.0/mod/mod_setenvif.html

Drop the restriction.  Tested with httpd 2.2 and 2.4.

Signed-off-by: Todd Zullinger <tmz@pobox.com>
Acked-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-04 10:45:57 -08:00
Johannes Schindelin
89a70b80eb t0302 & t3900: add forgotten quotes
When cleaning up files in the $HOME directory, it really makes sense to
quote the path, especially in Git's test suite, where the HOME directory
is *guaranteed* to contain spaces in its name.

It would appear that those two tests pass even without cleaning up the
files, but really more by pure chance than by design (the cleanup seems
not actually to be necessary).

However, if anybody would have a left-over `trash/` directory in Git's
`t/` directory, these tests would fail, because they would all of a
sudden try to delete that directory, but without the `-r` (recursive)
flag. That is how this issue was found.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 15:55:50 -08:00
Johannes Schindelin
567c53d00f Allow the test suite to pass in a directory whose name contains spaces
It is totally legitimate to clone Git's source code anywhere, including
into, say, directories whose name (or the name of its absolute path)
contains spaces.

However, a couple of tests failed to anticipate this, for lack of
quoting (or in one instance, for failure to expect more than one space
in the absolute path of the TEST_DIRECTORY). This can be easily verified
by calling these commands in your current clone:

	git clone . with\ spaces
	cd with\ spaces
	make -j15 test

Let's fix this.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-01-03 15:55:48 -08:00
Junio C Hamano
556de1a8e3 Merge branch 'sb/describe-blob'
"git describe" was taught to dig trees deeper to find a
<commit-ish>:<path> that refers to a given blob object.

* sb/describe-blob:
  builtin/describe.c: describe a blob
  builtin/describe.c: factor out describe_commit
  builtin/describe.c: print debug statements earlier
  builtin/describe.c: rename `oid` to avoid variable shadowing
  revision.h: introduce blob/tree walking in order of the commits
  list-objects.c: factor out traverse_trees_and_blobs
  t6120: fix typo in test name
2017-12-28 14:08:50 -08:00
Junio C Hamano
0433d533f1 Merge branch 'hi/merge-verify-sig-config'
"git merge" learned to pay attention to merge.verifySignatures
configuration variable and pretend as if '--verify-signatures'
option was given from the command line.

* hi/merge-verify-sig-config:
  t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
  t: add tests for pull --verify-signatures
  merge: add config option for verifySignatures
2017-12-28 14:08:50 -08:00
Junio C Hamano
8e777af273 Merge branch 'bp/fsmonitor'
Test fix.

* bp/fsmonitor:
  p7519: improve check for prerequisite WATCHMAN
2017-12-28 14:08:48 -08:00
Junio C Hamano
deeb2fce08 Merge branch 'tz/lib-git-svn-svnserve-tests'
* tz/lib-git-svn-svnserve-tests:
  t/lib-git-svn.sh: improve svnserve tests with parallel make test
  t/lib-git-svn: cleanup inconsistent tab/space usage
2017-12-28 14:08:46 -08:00
Junio C Hamano
63dd544897 Merge branch 'ew/svn-crlf'
"git svn" has been updated to strip CRs in the commit messages, as
recent versions of Subversion rejects them.

* ew/svn-crlf:
  git-svn: convert CRLF to LF in commit message to SVN
2017-12-28 14:08:46 -08:00
Junio C Hamano
f427b94985 Merge branch 'cc/skip-to-optional-val'
Introduce a helper to simplify code to parse a common pattern that
expects either "--key" or "--key=<something>".

* cc/skip-to-optional-val:
  t4045: reindent to make helpers readable
  diff: add tests for --relative without optional prefix value
  diff: use skip_to_optional_arg_default() in parsing --relative
  diff: use skip_to_optional_arg_default()
  diff: use skip_to_optional_arg()
  index-pack: use skip_to_optional_arg()
  git-compat-util: introduce skip_to_optional_arg()
2017-12-28 14:08:46 -08:00
Junio C Hamano
06358125b8 Merge branch 'sb/test-helper-excludes'
Simplify the ignore rules for t/helper directory.

* sb/test-helper-excludes:
  t/helper: ignore everything but sources
2017-12-27 11:16:29 -08:00
Junio C Hamano
237aa99cd2 Merge branch 'es/clone-shared-worktree'
"git clone --shared" to borrow from a (secondary) worktree did not
work, even though "git clone --local" did.  Both are now accepted.

* es/clone-shared-worktree:
  clone: support 'clone --shared' from a worktree
2017-12-27 11:16:28 -08:00
Junio C Hamano
eacf669cec Merge branch 'jt/decorate-api'
A few structures and variables that are implementation details of
the decorate API have been renamed and then the API got documented
better.

* jt/decorate-api:
  decorate: clean up and document API
2017-12-27 11:16:26 -08:00
Junio C Hamano
e87f9fc9d4 Merge branch 'es/worktree-checkout-hook'
"git worktree add" learned to run the post-checkout hook, just like
"git checkout" does, after the initial checkout.

* es/worktree-checkout-hook:
  worktree: invoke post-checkout hook (unless --no-checkout)
2017-12-27 11:16:21 -08:00
Junio C Hamano
0da2ba4880 Merge branch 'lb/rebase-i-short-command-names'
With a configuration variable rebase.abbreviateCommands set,
"git rebase -i" produces the todo list with a single-letter
command names.

* lb/rebase-i-short-command-names:
  sequencer.c: drop 'const' from function return type
  t3404: add test case for abbreviated commands
  rebase -i: learn to abbreviate command names
  rebase -i -x: add exec commands via the rebase--helper
  rebase -i: update functions to use a flags parameter
  rebase -i: replace reference to sha1 with oid
  rebase -i: refactor transform_todo_ids
  rebase -i: set commit to null in exec commands
  Documentation: use preferred name for the 'todo list' script
  Documentation: move rebase.* configs to new file
2017-12-27 11:16:21 -08:00
Junio C Hamano
720b1764de Merge branch 'tb/check-crlf-for-safe-crlf'
The "safe crlf" check incorrectly triggered for contents that does
not use CRLF as line endings, which has been corrected.

* tb/check-crlf-for-safe-crlf:
  t0027: Adapt the new MIX tests to Windows
  convert: tighten the safe autocrlf handling
2017-12-27 11:16:21 -08:00
Junio C Hamano
61061abba7 Merge branch 'jh/object-filtering'
In preparation for implementing narrow/partial clone, the object
walking machinery has been taught a way to tell it to "filter" some
objects from enumeration.

* jh/object-filtering:
  rev-list: support --no-filter argument
  list-objects-filter-options: support --no-filter
  list-objects-filter-options: fix 'keword' typo in comment
  pack-objects: add list-objects filtering
  rev-list: add list-objects filtering support
  list-objects: filter objects in traverse_commit_list
  oidset: add iterator methods to oidset
  oidmap: add oidmap iterator methods
  dir: allow exclusions from blob in addition to file
2017-12-27 11:16:21 -08:00
Luke Diamand
8cf422dbf1 git-p4: update multiple shelved change lists
--update-shelve can now be specified multiple times on the
command-line, to update multiple shelved changelists in a single
submit.

This then means that a git patch series can be mirrored to a
sequence of shelved changelists, and (relatively easily) kept in
sync as changes are made in git.

Note that Perforce does not really support overlapping shelved
changelists where one change touches the files modified by
another. Trying to do this will result in merge conflicts.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:30:52 -08:00
Torsten Bögershausen
7dbe8c8003 check-non-portable-shell.pl: wc -l may have leading WS
Test scripts count number of lines in an output and check it againt
its expectation.  fb3340a6 ("test-lib: introduce test_line_count to
measure files", 2010-10-31) introduced a helper to show a failure in
such a test in a more readable way than comparing `wc -l` output with
a number.

Besides, on some platforms, "$(wc -l <file)" is padded with leading
whitespace on the left, so

	test "$(wc -l <file)" = 4

would not work (most notably on macosX); the users of test_line_count
helper would not suffer from such a portability glitch.

Add a check in check-non-portable-shell.pl to find '"' between
`wc -l` and '=' and hint the user about test_line_count().

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 13:00:51 -08:00
Junio C Hamano
b6825b5c8e Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index
* ew/empty-merge-with-dirty-index-maint:
  merge-recursive: avoid incorporating uncommitted changes in a merge
  move index_has_changes() from builtin/am.c to merge.c for reuse
  t6044: recursive can silently incorporate dirty changes in a merge
2017-12-22 12:48:38 -08:00
Elijah Newren
65170c07d4 merge-recursive: avoid incorporating uncommitted changes in a merge
builtin/merge.c contains this important requirement for merge strategies:
	/*
	 * At this point, we need a real merge.  No matter what strategy
	 * we use, it would operate on the index, possibly affecting the
	 * working tree, and when resolved cleanly, have the desired
	 * tree in the index -- this means that the index must be in
	 * sync with the head commit.  The strategies are responsible
	 * to ensure this.
	 */

merge-recursive does not do this check directly, instead it relies on
unpack_trees() to do it.  However, merge_trees() has a special check for
the merge branch exactly matching the merge base; when it detects that
situation, it returns early without calling unpack_trees(), because it
knows that the HEAD commit already has the correct result.  Unfortunately,
it didn't check that the index matched HEAD, so after it returned, the
outer logic ended up creating a merge commit that included something
other than HEAD.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 12:20:38 -08:00
Elijah Newren
eab3f2850e t6044: recursive can silently incorporate dirty changes in a merge
The recursive merge strategy has some special handling when the tree for
the merge branch exactly matches the merge base, but that code path is
missing checks for the index having changes relative to HEAD.  Add a
testcase covering this scenario.

Reported-by: Andreas Krey <a.krey@gmx.de>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 12:14:16 -08:00
Stefan Beller
74dea0e13c t/helper/test-lazy-name-hash: fix compilation
I was compiling origin/master today with DEVELOPER compiler flags
and was greeted by:

t/helper/test-lazy-init-name-hash.c: In function ‘cmd_main’:
t/helper/test-lazy-init-name-hash.c:172:5: error: ‘nr_threads_used’ may be used uninitilized in this function [-Werror=maybe-uninitialized]
     printf("avg [size %8d] [single %f] %c [multi %f %d]\n",
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         nr,
         ~~~
         (double)avg_single/1000000000,
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         (avg_single < avg_multi ? '<' : '>'),
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         (double)avg_multi/1000000000,
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         nr_threads_used);
         ~~~~~~~~~~~~~~~~
t/helper/test-lazy-init-name-hash.c:115:6: note: ‘nr_threads_used’ was declared here
  int nr_threads_used;
      ^~~~~~~~~~~~~~~

I do not see how we can arrive at that line without having `nr_threads_used`
initialized, as we'd have `count > 1`  (which asserts that we ran the
loop above at least once, such that it *should* be initialized).

Just clear the variable at the beginning of the function to squelch
the warning.

Signed-off-by: Stefan Beller <sbeller@google.com>
Acked-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-22 10:42:04 -08:00
Junio C Hamano
fb2afea366 t5573, t7612: clean up after unexpected success of 'pull' and 'merge'
The previous steps added test_when_finished to tests that run 'git
pull' or 'git merge' with expectation of success, so that the test
after them can start from a known state even when their 'git pull'
invocation unexpectedly fails.  However, tests that run 'git pull'
or 'git merge' expecting it not to succeed forgot to protect later
tests the same way---if they unexpectedly succeed, the test after
them would start from an unexpected state.

Reset and checkout the initial commit after all these tests, whether
they expect their invocations to succeed or fail.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-19 12:58:57 -08:00
Junio C Hamano
8d7fefaac4 Merge branch 'ar/unconfuse-three-dots'
Ancient part of codebase still shows dots after an abbreviated
object name just to show that it is not a full object name, but
these ellipses are confusing to people who newly discovered Git
who are used to seeing abbreviated object names and find them
confusing with the range syntax.

* ar/unconfuse-three-dots:
  t2020: test variations that matter
  t4013: test new output from diff --abbrev --raw
  diff: diff_aligned_abbrev: remove ellipsis after abbreviated SHA-1 value
  t4013: prepare for upcoming "diff --raw --abbrev" output format change
  checkout: describe_detached_head: remove ellipsis after committish
  print_sha1_ellipsis: introduce helper
  Documentation: user-manual: limit usage of ellipsis
  Documentation: revisions: fix typo: "three dot" ---> "three-dot" (in line with "two-dot").
2017-12-19 11:33:58 -08:00
Junio C Hamano
66d3f19324 Merge branch 'tg/worktree-create-tracking'
The way "git worktree add" determines what branch to create from
where and checkout in the new worktree has been updated a bit.

* tg/worktree-create-tracking:
  add worktree.guessRemote config option
  worktree: add --guess-remote flag to add subcommand
  worktree: make add <path> <branch> dwim
  worktree: add --[no-]track option to the add subcommand
  worktree: add can be created from any commit-ish
  checkout: factor out functions to new lib file
2017-12-19 11:33:57 -08:00
Junio C Hamano
6f3a0b6da5 Merge branch 'bw/submodule-config-cleanup'
Recent update to the submodule configuration code broke "diff-tree"
by accidentally stopping to read from the index upfront.

* bw/submodule-config-cleanup:
  diff-tree: read the index so attribute checks work in bare repositories
2017-12-19 11:33:57 -08:00
Junio C Hamano
f4f233e13d Merge branch 'bw/pathspec-match-submodule-boundary'
An v2.12-era regression in pathspec match logic, which made it look
into submodule tree even when it is not desired, has been fixed.

* bw/pathspec-match-submodule-boundary:
  pathspec: only match across submodule boundaries when requested
2017-12-19 11:33:56 -08:00
Junio C Hamano
d7c6c2369a Merge branch 'jt/diff-anchored-patience'
"git diff" learned a variant of the "--patience" algorithm, to
which the user can specify which 'unique' line to be used as
anchoring points.

* jt/diff-anchored-patience:
  diff: support anchoring line(s)
2017-12-19 11:33:56 -08:00
Junio C Hamano
646685460c Merge branch 'en/rename-progress'
Historically, the diff machinery for rename detection had a
hardcoded limit of 32k paths; this is being lifted to allow users
trade cycles with a (possibly) easier to read result.

* en/rename-progress:
  diffcore-rename: make diff-tree -l0 mean -l<large>
  sequencer: show rename progress during cherry picks
  diff: remove silent clamp of renameLimit
  progress: fix progress meters when dealing with lots of work
  sequencer: warn when internal merge may be suboptimal due to renameLimit
2017-12-19 11:33:55 -08:00
Stefan Beller
644eb60bd0 builtin/describe.c: describe a blob
Sometimes users are given a hash of an object and they want to
identify it further (ex.: Use verify-pack to find the largest blobs,
but what are these? or [1])

When describing commits, we try to anchor them to tags or refs, as these
are conceptually on a higher level than the commit. And if there is no ref
or tag that matches exactly, we're out of luck.  So we employ a heuristic
to make up a name for the commit. These names are ambiguous, there might
be different tags or refs to anchor to, and there might be different
path in the DAG to travel to arrive at the commit precisely.

When describing a blob, we want to describe the blob from a higher layer
as well, which is a tuple of (commit, deep/path) as the tree objects
involved are rather uninteresting.  The same blob can be referenced by
multiple commits, so how we decide which commit to use?  This patch
implements a rather naive approach on this: As there are no back pointers
from blobs to commits in which the blob occurs, we'll start walking from
any tips available, listing the blobs in-order of the commit and once we
found the blob, we'll take the first commit that listed the blob. For
example

  git describe --tags v0.99:Makefile
  conversion-901-g7672db20c2:Makefile

tells us the Makefile as it was in v0.99 was introduced in commit 7672db20.

The walking is performed in reverse order to show the introduction of a
blob rather than its last occurrence.

[1] https://stackoverflow.com/questions/223678/which-commit-has-this-blob

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-19 11:17:16 -08:00
René Scharfe
b4f61b7fa4 p7519: improve check for prerequisite WATCHMAN
The return code of command -v with a non-existing command is 1 in bash
and 127 in dash.  Use that return code directly to allow the script to
work with dash and without watchman (e.g. on Debian).

While at it stop redirecting the output.  stderr is redirected to
/dev/null by test_lazy_prereq already, and stdout can actually be
useful -- the path of the found watchman executable is sent there, but
it's shown only if the script was run with --verbose.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Acked-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-12-18 14:00:45 -08:00
Todd Zullinger
bf9d7df950 t/lib-git-svn.sh: improve svnserve tests with parallel make test
Setting SVNSERVE_PORT enables several tests which require a local
svnserve daemon to be run (in t9113 & t9126).  The tests share setup of
the local svnserve via `start_svnserve()`.  The function uses svnserve's
`--listen-once` option, which causes svnserve to accept one connection
on the port, serve it, and exit.  When running the tests in parallel
this fails if one test tries to start svnserve while the other is still
running.

Use the test number as the svnserve port (similar to httpd tests) to
avoid port conflicts.  Developers can set GIT_TEST_SVNSERVE to any value
other than 'false' or 'auto' to enable these tests.

Acked-by: Eric Wong <e@80x24.org>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Todd Zullinger <tmz@pobox.com>
2017-12-14 10:41:55 -08:00