Commit Graph

84 Commits

Author SHA1 Message Date
Jeff King
5d34d1ac06 revision: do not fallback to default when rev_input_given is set
If revs->def is set (as it is in "git log") and there are no
pending objects after parsing the user's input, then we show
whatever is in "def". But if the user _did_ ask for some
input that just happened to be empty (e.g., "--glob" that
does not match anything), showing the default revision is
confusing. We should just show nothing, as that is what the
user's request yielded.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-08-02 15:45:22 -07:00
Junio C Hamano
ae7e4d4fed Merge branch 'ab/pcre-v2'
Update "perl-compatible regular expression" support to enable JIT
and also allow linking with the newer PCRE v2 library.

* ab/pcre-v2:
  grep: add support for PCRE v2
  grep: un-break building with PCRE >= 8.32 without --enable-jit
  grep: un-break building with PCRE < 8.20
  grep: un-break building with PCRE < 8.32
  grep: add support for the PCRE v1 JIT API
  log: add -P as a synonym for --perl-regexp
  grep: skip pthreads overhead when using one thread
  grep: don't redundantly compile throwaway patterns under threading
2017-06-19 12:38:43 -07:00
Junio C Hamano
36dcb57337 Merge branch 'ab/grep-preparatory-cleanup'
The internal implementation of "git grep" has seen some clean-up.

* ab/grep-preparatory-cleanup: (31 commits)
  grep: assert that threading is enabled when calling grep_{lock,unlock}
  grep: given --threads with NO_PTHREADS=YesPlease, warn
  pack-objects: fix buggy warning about threads
  pack-objects & index-pack: add test for --threads warning
  test-lib: add a PTHREADS prerequisite
  grep: move is_fixed() earlier to avoid forward declaration
  grep: change internal *pcre* variable & function names to be *pcre1*
  grep: change the internal PCRE macro names to be PCRE1
  grep: factor test for \0 in grep patterns into a function
  grep: remove redundant regflags assignments
  grep: catch a missing enum in switch statement
  perf: add a comparison test of log --grep regex engines with -F
  perf: add a comparison test of log --grep regex engines
  perf: add a comparison test of grep regex engines with -F
  perf: add a comparison test of grep regex engines
  perf: emit progress output when unpacking & building
  perf: add a GIT_PERF_MAKE_COMMAND for when *_MAKE_OPTS won't do
  grep: add tests to fix blind spots with \0 patterns
  grep: prepare for testing binary regexes containing rx metacharacters
  grep: add a test helper function for less verbose -f \0 tests
  ...
2017-06-02 15:06:06 +09:00
Junio C Hamano
7ef0d04738 Merge branch 'jk/diff-blob'
The result from "git diff" that compares two blobs, e.g. "git diff
$commit1:$path $commit2:$path", used to be shown with the full
object name as given on the command line, but it is more natural to
use the $path in the output and use it to look up .gitattributes.

* jk/diff-blob:
  diff: use blob path for blob/file diffs
  diff: use pending "path" if it is available
  diff: use the word "path" instead of "name" for blobs
  diff: pass whole pending entry in blobinfo
  handle_revision_arg: record paths for pending objects
  handle_revision_arg: record modes for "a..b" endpoints
  t4063: add tests of direct blob diffs
  get_sha1_with_context: dynamically allocate oc->path
  get_sha1_with_context: always initialize oc->symlink_path
  sha1_name: consistently refer to object_context as "oc"
  handle_revision_arg: add handle_dotdot() helper
  handle_revision_arg: hoist ".." check out of range parsing
  handle_revision_arg: stop using "dotdot" as a generic pointer
  handle_revision_arg: simplify commit reference lookups
  handle_revision_arg: reset "dotdot" consistently
2017-06-02 15:06:05 +09:00
Junio C Hamano
78089b71da Merge branch 'jc/name-rev-lw-tag'
"git describe --contains" penalized light-weight tags so much that
they were almost never considered.  Instead, give them about the
same chance to be considered as an annotated tag that is the same
age as the underlying commit would.

* jc/name-rev-lw-tag:
  name-rev: favor describing with tags and use committer date to tiebreak
  name-rev: refactor logic to see if a new candidate is a better name
2017-05-30 11:16:40 +09:00
Ævar Arnfjörð Bjarmason
7531a2dd87 log: add -P as a synonym for --perl-regexp
Add a short -P option as a synonym for the longer --perl-regexp, for
consistency with the options the corresponding grep invocations
accept.

This was intentionally omitted in commit 727b6fc3ed ("log --grep:
accept --basic-regexp and --perl-regexp", 2012-10-03) for unspecified
future use.

Make it consistent with "grep" rather than to keep it open for future
use, and to avoid the confusion of -P meaning different things for
grep & log, as is the case with the -G option.

As noted in the aforementioned commit the --basic-regexp option can't
have a corresponding -G argument, as the log command already uses that
for -G<regex>.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-26 12:59:05 +09:00
Jeff King
ed79b2cf03 handle_revision_arg: reset "dotdot" consistently
When we are parsing a range like "a..b", we write a
temporary NUL over the first ".", so that we can access the
names "a" and "b" as C strings. But our restoration of the
original "." is done at inconsistent times, which can lead
to confusing results.

For most calls, we restore the "." after we resolve the
names, but before we call verify_non_filename().  This means
that when we later call add_pending_object(), the name for
the left-hand "a" has been re-expanded to "a..b". You can
see this with:

  git log --source a...b

where "b" will be correctly marked with "b", but "a" will be
marked with "a...b". Likewise with "a..b" (though you need
to use --boundary to even see "a" at all in that case).

To top off the confusion, when the REVARG_CANNOT_BE_FILENAME
flag is set, we skip the non-filename check, and leave the
NUL in place.

That means we do report the correct name for "a" in the
pending array. But some code paths try to show the whole
"a...b" name in error messages, and these erroneously show
only "a" instead of "a...b". E.g.:

  $ git cherry-pick HEAD:foo...HEAD:foo
  error: object d95f3ad14dee633a758d2e331151e950dd13e4ed is a blob, not a commit
  error: object d95f3ad14dee633a758d2e331151e950dd13e4ed is a blob, not a commit
  fatal: Invalid symmetric difference expression HEAD:foo

(That last message should be "HEAD:foo...HEAD:foo"; I used
cherry-pick because it passes the CANNOT_BE_FILENAME flag).

As an interesting side note, cherry-pick actually looks at
and re-resolves the arguments from the pending->name fields.
So it would have been visibly broken by the first bug, but
the effect was canceled out by the second one.

This patch makes the whole function consistent by re-writing
the NUL immediately after calling verify_non_filename(), and
then restoring the "." as appropriate in some error-printing
and early-return code paths.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24 10:59:03 +09:00
Ævar Arnfjörð Bjarmason
9001c1920c grep: add a test asserting that --perl-regexp dies when !PCRE
Add a test asserting that when --perl-regexp (and -P for grep) is
given to git-grep & git-log that we die with an error.

In developing the PCRE v2 series I introduced a regression where -P
would (through control-flow fall-through) become synonymous with basic
POSIX matching. I.e. 'git grep -P '[\d]' would match "d" instead of
digits.

The entire test suite would still pass with this serious regression,
since everything that tested for --perl-regexp would be guarded by the
PCRE prerequisite, fix that blind-spot by adding tests under !PCRE
asserting that git must die when given --perl-regexp or -P.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-21 08:25:37 +09:00
Ævar Arnfjörð Bjarmason
9e3cbc59d5 log: make --regexp-ignore-case work with --perl-regexp
Make the --regexp-ignore-case option work with --perl-regexp. This
never worked, and there was no test for this. Fix the bug and add a
test.

When PCRE support was added in commit 63e7e9d8b6 ("git-grep: Learn
PCRE", 2011-05-09) compile_pcre_regexp() would only check
opt->ignore_case, but when the --perl-regexp option was added in
commit 727b6fc3ed ("log --grep: accept --basic-regexp and
--perl-regexp", 2012-10-03) the code didn't set the opt->ignore_case.

Change the test suite to test for -i and --invert-regexp with
basic/extended/perl patterns in addition to fixed, which was the only
patternType that was tested for before in combination with those
options.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-21 08:25:37 +09:00
Ævar Arnfjörð Bjarmason
9df46763ef log: add exhaustive tests for pattern style options & config
Add exhaustive tests for how the different grep.patternType options &
the corresponding command-line options affect git-log.

Before this change it was possible to patch revision.c so that the
--basic-regexp option was synonymous with --extended-regexp, and
--perl-regexp wasn't recognized at all, and still have 100% of the
test suite pass.

This was because the first test being modified here, added in commit
34a4ae55b2 ("log --grep: use the same helper to set -E/-F options as
"git grep"", 2012-10-03), didn't actually check whether we'd enabled
extended regular expressions as distinct from re-toggling non-fixed
string support.

Fix that by changing the pattern to a pattern that'll only match if
--extended-regexp option is provided, but won't match under the
default --basic-regexp option.

Other potential regressions were possible since there were no tests
for the rest of the combinations of grep.patternType configuration
toggles & corresponding git-log command-line options. Add exhaustive
tests for those.

The patterns being passed to fixed/basic/extended/PCRE are carefully
crafted to return the wrong thing if the grep engine were to pick any
other matching method than the one it's told to use.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-21 08:25:37 +09:00
brian m. carlson
c74271aae7 builtin/log: honor log.decorate
The recent change that introduced autodecorating of refs accidentally
broke the ability of users to set log.decorate = false to override it.
When the git_log_config was traversed a second time with an option other
than log.decorate, the decoration style would be set to the automatic
style, even if the user had already overridden it.  Instead of setting
the option in config parsing, set it in init_log_defaults instead.

Add a test for this case.  The actual additional config option doesn't
matter, but it needs to be something not already set in the
configuration file.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Acked-by: Alex Henrie <alexhenrie24@gmail.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-15 11:33:19 +09:00
Junio C Hamano
ef1e74065c name-rev: favor describing with tags and use committer date to tiebreak
"git name-rev" assigned a phony "far in the future" date to tips of
refs that are not pointing at tag objects, and favored names based
on a ref with the oldest date.  This made it almost impossible for
an unannotated tags and branches to be counted as a viable base,
which was especially problematic when the command is run with the
"--tags" option.  If an unannotated tag that points at an ancient
commit and an annotated tag that points at a much newer commit
reaches the commit that is being named, the old unannotated tag was
ignored.

Update the "taggerdate" field of the rev-name structure, which is
initialized from the tip of ref, to have the committer date if the
object at the tip of ref is a commit, not a tag, so that we can
optionally take it into account when doing "is this name better?"
comparison logic.

When "name-rev" is run without the "--tags" option, the general
expectation is still to name the commit based on a tag if possible,
but use non-tag refs as fallback, and tiebreak among these non-tag
refs by favoring names with shorter hops from the tip.  The use of a
phony "far in the future" date in the original code was an effective
way to ensure this expectation is held: a non-tag tip gets the same
"far in the future" timestamp, giving precedence to tags, and among
non-tag tips, names with shorter hops are preferred over longer
hops, without taking the "taggerdate" into account.  As we are
taking over the "taggerdate" field to store the committer date for
tips with commits:

 (1) keep the original logic when comparing names based on two refs
     both of which are from refs/tags/;

 (2) favoring a name based on a ref in refs/tags/ hierarchy over
     a ref outside the hierarchy;

 (3) between two names based on a ref both outside refs/tags/, give
     precedence to a name with shorter hops and use "taggerdate"
     only to tie-break.

A change to t4202 is a natural consequence.  The test creates a
commit on a branch "side" and points at it with an unannotated tag
"refs/tags/side-2".  The original code couldn't decide which one to
favor at all, and gave a name based on a branch (simply because
refs/heads/side sorts earlier than refs/tags/side-2).  Because the
updated logic is taught to favor refs in refs/tags/ hierarchy, the
the test is updated to expect to see tags/side-2 instead.

[mjg: open-coded the comparisons in is_better_name(), dropping a
helper macro used in the original]

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael J Gruber <git@grubix.eu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-29 10:53:35 -07:00
Alex Henrie
940a911f8e log: if --decorate is not given, default to --decorate=auto
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-24 10:38:43 -07:00
Junio C Hamano
e53c7f8731 Merge branch 'jk/log-graph-name-only'
"git log --graph" did not work well with "--name-only", even though
other forms of "diff" output were handled correctly.

* jk/log-graph-name-only:
  diff: print line prefix for --name-only output
2017-02-10 12:52:27 -08:00
Jeff King
f5022b5fed diff: print line prefix for --name-only output
If you run "git log --graph --name-only", the pathnames are
not indented to go along with their matching commits (unlike
all of the other diff formats). We need to output the line
prefix for each item before writing it.

The tests cover both --name-status and --name-only. The
former actually gets this right already, because it builds
on the --raw format functions. It's only --name-only which
uses its own code (and this fix mirrors the code in
diff_flush_raw()).

Note that the tests don't follow our usual style of setting
up the "expect" output inside the test block. This matches
the surrounding style, but more importantly it is easier to
read: we don't have to worry about embedded single-quotes,
and the leading indentation is more obvious.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-08 13:39:57 -08:00
Junio C Hamano
85279e8649 Merge branch 'nd/log-graph-configurable-colors'
Some people feel the default set of colors used by "git log --graph"
rather limiting.  A mechanism to customize the set of colors has
been introduced.

* nd/log-graph-configurable-colors:
  document behavior of empty color name
  color_parse_mem: allow empty color spec
  log --graph: customize the graph lines with config log.graphColors
  color.c: trim leading spaces in color_parse_mem()
  color.c: fix color_parse_mem() with value_len == 0
2017-02-02 13:36:58 -08:00
Jeff King
55cccf4bb3 color_parse_mem: allow empty color spec
Prior to c2f41bf52 (color.c: fix color_parse_mem() with
value_len == 0, 2017-01-19), the empty string was
interpreted as a color "reset". This was an accidental
outcome, and that commit turned it into an error.

However, scripts may pass the empty string as a default
value to "git config --get-color" to disable color when the
value is not defined. The git-add--interactive script does
this. As a result, the script is unusable since c2f41bf52
unless you have color.diff.plain defined (if it is defined,
then we don't parse the empty default at all).

Our test scripts didn't notice the recent breakage because
they run without a terminal, and thus without color. They
never hit this code path at all. And nobody noticed the
original buggy "reset" behavior, because it was effectively
a noop.

Let's fix the code to have an empty color name produce an
empty sequence of color codes. The tests need a few fixups:

  - we'll add a new test in t4026 to cover this case. But
    note that we need to tweak the color() helper. While
    we're there, let's factor out the literal ANSI ESC
    character. Otherwise it makes the diff quite hard to
    read.

  - we'll add a basic sanity-check in t4026 that "git add
    -p" works at all when color is enabled. That would have
    caught this bug, as well as any others that are specific
    to the color code paths.

  - 73c727d69 (log --graph: customize the graph lines with
    config log.graphColors, 2017-01-19) added a test to
    t4202 that checks some "invalid" graph color config.
    Since ",, blue" before yielded only "blue" as valid, and
    now yields "empty, empty, blue", we don't match the
    expected output.

    One way to fix this would be to change the expectation
    to the empty color strings. But that makes the test much
    less interesting, since we show only two graph lines,
    both of which would be colorless.

    Since the empty-string case is now covered by t4026,
    let's remove them entirely here. They're just in the way
    of the primary thing the test is supposed to be
    checking.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-31 21:02:04 -08:00
Nguyễn Thái Ngọc Duy
73c727d69f log --graph: customize the graph lines with config log.graphColors
If you have a 256 colors terminal (or one with true color support), then
the predefined 12 colors seem limited. On the other hand, you don't want
to draw graph lines with every single color in this mode because the two
colors could look extremely similar. This option allows you to hand pick
the colors you want.

Even with standard terminal, if your background color is neither black
or white, then the graph line may match your background and become
hidden. You can exclude your background color (or simply the colors you
hate) with this.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-23 18:32:11 -08:00
Jacob Keller
660e113ce1 graph: add support for --line-prefix on all graph-aware output
Add an extension to git-diff and git-log (and any other graph-aware
displayable output) such that "--line-prefix=<string>" will print the
additional line-prefix on every line of output.

To make this work, we have to fix a few bugs in the graph API that force
graph_show_commit_msg to be used only when you have a valid graph.
Additionally, we extend the default_diff_output_prefix handler to work
even when no graph is enabled.

This is somewhat of a hack on top of the graph API, but I think it
should be acceptable here.

This will be used by a future extension of submodule display which
displays the submodule diff as the actual diff between the pre and post
commit in the submodule project.

Add some tests for both git-log and git-diff to ensure that the prefix
is honored correctly.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-31 18:07:09 -07:00
Junio C Hamano
7b163e9187 Merge branch 'jc/grep-commandline-vs-configuration' into maint
"git -c grep.patternType=extended log --basic-regexp" misbehaved
because the internal API to access the grep machinery was not
designed well.

* jc/grep-commandline-vs-configuration:
  grep: further simplify setting the pattern type
2016-08-10 11:55:29 -07:00
Junio C Hamano
b422d99658 Merge branch 'jc/grep-commandline-vs-configuration'
"git -c grep.patternType=extended log --basic-regexp" misbehaved
because the internal API to access the grep machinery was not
designed well.

* jc/grep-commandline-vs-configuration:
  grep: further simplify setting the pattern type
2016-08-04 14:39:18 -07:00
Junio C Hamano
8465541e8c grep: further simplify setting the pattern type
When c5c31d33 (grep: move pattern-type bits support to top-level
grep.[ch], 2012-10-03) introduced grep_commit_pattern_type() helper
function, the intention was to allow the users of grep API to having
to fiddle only with .pattern_type_option (which can be set to "fixed",
"basic", "extended", and "pcre"), and then immediately before compiling
the pattern strings for use, call grep_commit_pattern_type() to have
it prepare various bits in the grep_opt structure (like .fixed,
.regflags, etc.).

However, grep_set_pattern_type_option() helper function the grep API
internally uses were left as an external function by mistake.  This
function shouldn't have been made callable by the users of the API.

Later when the grep API was used in revision traversal machinery,
the caller then mistakenly started calling the function around
34a4ae55 (log --grep: use the same helper to set -E/-F options as
"git grep", 2012-10-03), instead of setting the .pattern_type_option
field and letting the grep_commit_pattern_type() to take care of the
details.

This caused an unnecessary bug that made a configured
grep.patternType take precedence over the command line options
(e.g. --basic-regexp, --fixed-strings) in "git log" family of
commands.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-07-25 09:16:18 -07:00
Mehul Jain
fce04c3ca6 log: add log.showSignature configuration variable
Users may want to always use "--show-signature" while using git-log and
related commands.

When log.showSignature is set to true, git-log and related commands will
behave as if "--show-signature" was given to them.

Note that this config variable is meant to affect git-log, git-show,
git-whatchanged and git-reflog. Other commands like git-format-patch,
git-rev-list are not to be affected by this config variable.

Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-24 13:01:13 -07:00
Mehul Jain
aa3799996c log: add "--no-show-signature" command line option
If an user creates an alias with "--show-signature" early in command
line, e.g.
	[alias] logss = log --show-signature

then there is no way to countermand it through command line.

Teach git-log and related commands about "--no-show-signature" command
line option. This will make "git logss --no-show-signature" run
without showing GPG signature.

Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-24 13:01:13 -07:00
Mehul Jain
aefc81ad38 t4202: refactor test
Subsequent patches will want to reuse the 'signed' branch that the
'log --graph --show-signature' test creates and uses.

Split the set-up part into a test of its own, and make the existing
test into a separate one that only inspects the history on the 'signed'
branch. This way, it becomes clearer that tests added by subsequent
patches reuse the 'signed' branch in the same way.

Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-24 13:00:39 -07:00
Matthieu Moy
5404c116aa diff: activate diff.renames by default
Rename detection is a very convenient feature, and new users shouldn't
have to dig in the documentation to benefit from it.

Potential objections to activating rename detection are that it
sometimes fail, and it is sometimes slow. But rename detection is
already activated by default in several cases like "git status" and "git
merge", so activating diff.renames does not fundamentally change the
situation. When the rename detection fails, it now fails consistently
between "git diff" and "git status".

This setting does not affect plumbing commands, hence well-written
scripts will not be affected.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-02-25 11:31:02 -08:00
Junio C Hamano
71957339da Merge branch 'jk/pending-keep-tag-name'
History traversal with "git log --source" that starts with an
annotated tag failed to report the tag as "source", due to an
old regression in the command line parser back in v2.2 days.

* jk/pending-keep-tag-name:
  revision.c: propagate tag names from pending array
2015-12-28 13:58:04 -08:00
Jeff King
728350b76a revision.c: propagate tag names from pending array
When we unwrap a tag to find its commit for a traversal, we
do not propagate the "name" field of the tag in the pending
array (i.e., the ref name the user gave us in the first
place) to the commit (instead, we use an empty string). This
means that "git log --source" will never show the tag-name
for commits we reach through it.

This was broken in 2073949 (traverse_commit_list: support
pending blobs/trees with paths, 2014-10-15). That commit
tried to be careful and avoid propagating the path
information for a tag (which would be nonsensical) to trees
and blobs. But it should not have cut off the "name" field,
which should carry forward to children.

Note that this does mean that the "name" field will carry
forward to blobs and trees, too. Whereas prior to 2073949,
we always gave them an empty string. This is the right thing
to do, but in practice no callers probably use it (since now
we have an explicit separate "path" field, which was the
point of 2073949).

We add tests here not only for the broken case, but also a
basic sanity test of "log --source" in general, which did
not have any coverage in the test suite.

Reported-by: Raymundo <gypark@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-12-17 10:47:56 -08:00
Junio C Hamano
699a0f3748 Merge branch 'jk/log-missing-default-HEAD'
"git init empty && git -C empty log" said "bad default revision 'HEAD'",
which was found to be a bit confusing to new users.

* jk/log-missing-default-HEAD:
  log: diagnose empty HEAD more clearly
2015-09-02 12:50:10 -07:00
Jeff King
ce11360467 log: diagnose empty HEAD more clearly
If you init or clone an empty repository, the initial
message from running "git log" is not very friendly:

  $ git init
  Initialized empty Git repository in /home/peff/foo/.git/
  $ git log
  fatal: bad default revision 'HEAD'

Let's detect this situation and write a more friendly
message:

  $ git log
  fatal: your current branch 'master' does not have any commits yet

We also detect the case that 'HEAD' points to a broken ref;
this should be even less common, but is easy to see. Note
that we do not diagnose all possible cases. We rely on
resolve_ref, which means we do not get information about
complex cases. E.g., "--default master" would use dwim_ref
to find "refs/heads/master", but we notice only that
"master" does not exist. Similarly, a complex sha1
expression like "--default HEAD^2" will not resolve as a
ref.

But that's OK. We fall back to a generic error message in
those cases, and they are unlikely to be used anyway.
Catching an empty or broken "HEAD" improves the common case,
and the other cases are not regressed.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-08-31 09:34:20 -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
Junio C Hamano
30db51a3fe Merge branch 'jk/test-chain-lint'
People often forget to chain the commands in their test together
with &&, leaving a failure from an earlier command in the test go
unnoticed.  The new GIT_TEST_CHAIN_LINT mechanism allows you to
catch such a mistake more easily.

* jk/test-chain-lint: (36 commits)
  t9001: drop save_confirm helper
  t0020: use test_* helpers instead of hand-rolled messages
  t: simplify loop exit-code status variables
  t: fix some trivial cases of ignored exit codes in loops
  t7701: fix ignored exit code inside loop
  t3305: fix ignored exit code inside loop
  t0020: fix ignored exit code inside loops
  perf-lib: fix ignored exit code inside loop
  t6039: fix broken && chain
  t9158, t9161: fix broken &&-chain in git-svn tests
  t9104: fix test for following larger parents
  t4104: drop hand-rolled error reporting
  t0005: fix broken &&-chains
  t7004: fix embedded single-quotes
  t0050: appease --chain-lint
  t9001: use test_when_finished
  t4117: use modern test_* helpers
  t6034: use modern test_* helpers
  t1301: use modern test_* helpers
  t0020: use modern test_* helpers
  ...
2015-03-26 11:57:14 -07:00
Junio C Hamano
dbd04eba01 Merge branch 'dj/log-graph-with-no-walk'
"git log --graph --no-walk A B..." is a otcnflicting request that
asks nonsense; no-walk tells us show discrete points in the
history, while graph asks to draw connections between these
discrete points. Forbid the combination.

* dj/log-graph-with-no-walk:
  revision: forbid combining --graph and --no-walk
2015-03-25 12:54:22 -07:00
Jeff King
a167ece0c8 t: use verbose instead of hand-rolled errors
Many tests that predate the "verbose" helper function use a
pattern like:

  test ... || {
	  echo ...
	  false
  }

to give more verbose output. Using the helper, we can do
this with a single line, and avoid a || which interacts
badly with &&-chaining (besides fooling --chain-lint, we hit
the error block no matter which command in the chain failed,
so we may often show useless results).

In most cases, the messages printed by "verbose" are equally
good (in some cases better; t6006 accidentally redirects the
message to a file!). The exception is t7001, whose output
suffers slightly. However, it's still enough to show the
user which part failed, given that we will have just printed
the test script to stderr.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-20 10:20:15 -07:00
Jeff King
8fb268720e t: fix severe &&-chain breakage
These are tests which are missing a link in their &&-chain,
in a location which causes a significant portion of the test
to be missed (e.g., the test effectively does nothing, or
consists of a long string of actions and output comparisons,
and we throw away the exit code of at least one part of the
string).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-20 10:20:13 -07:00
Dongcan Jiang
695985f483 revision: forbid combining --graph and --no-walk
Because "--graph" is about connected history while --no-walk is
about discrete points, it does not make sense to allow these two
options at the same time. [1]

This change makes a few calls to "show --graph" fail in t4052, but
asking to show one commit with graph is a nonsensical thing to do.
Thus, tests on "show --graph" in t4052 have been removed [2,3].
Same tests on "show" without --graph option have already been tested
in 4052.

3 testcases have been added to test this patch.

[1]: http://article.gmane.org/gmane.comp.version-control.git/216083
[2]: http://article.gmane.org/gmane.comp.version-control.git/264950
[3]: http://article.gmane.org/gmane.comp.version-control.git/265107

Helped-By: Eric Sunshine <sunshine@sunshineco.com>
Helped-By: René Scharfe <l.s.r@web.de>
Helped-By: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Dongcan Jiang <dongcan.jiang@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-19 11:07:51 -07:00
Christoph Junghans
22dfa8a23d log: teach --invert-grep option
"git log --grep=<string>" shows only commits with messages that
match the given string, but sometimes it is useful to be able to
show only commits that do *not* have certain messages (e.g. "show
me ones that are not FIXUP commits").

Originally, we had the invert-grep flag in grep_opt, but because
"git grep --invert-grep" does not make sense except in conjunction
with "--files-with-matches", which is already covered by
"--files-without-matches", it was moved it to revisions structure.
To have the flag there expresses the function to the feature better.

When the newly inserted two tests run, the history would have commits
with messages "initial", "second", "third", "fourth", "fifth", "sixth"
and "Second", committed in this order.  The commits that does not match
either "th" or "Sec" is "second" and "initial". For the case insensitive
case only "initial" matches.

Signed-off-by: Christoph Junghans <ottxor@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-01-13 10:20:32 -08:00
Zoltan Klinger
cf3983d1ff log: fix indentation for --graph --show-signature
The git log --graph --show-signature command incorrectly indents the gpg
information about signed commits and merged signed tags. It does not
follow the level of indentation of the current commit.

Example of garbled output:
$ git log --show-signature --graph
*   commit 258e0a237cb69aaa587b0a4fb528bb0316b1b776
|\  gpg: Signature made Mon, Jun 30, 2014 13:22:33 EDT using RSA key ID DA08
gpg: Good signature from "Jason Pyeron <jpye...@pdinc.us>"
Merge: 727c355 1ca13ed
| | Author: Jason Pyeron <jpye...@pdinc.us>
| | Date:   Mon Jun 30 13:22:29 2014 -0400
| |
| |     Merge of 1ca13ed2271d60ba9 branch - rebranding
| |
| * commit 1ca13ed2271d60ba93d40bcc8db17ced8545f172
| | gpg: Signature made Mon, Jun 23, 2014  9:45:47 EDT using RSA key ID DD37
gpg: Good signature from "Stephen Robert Guglielmo <s...@guglielmo.us>"
gpg:                 aka "Stephen Robert Guglielmo <srguglie...@gmail.com>"
Author: Stephen R Guglielmo <s...@guglielmo.us>
| | Date:   Mon Jun 23 09:45:27 2014 -0400
| |
| |     Minor URL updates

In log-tree.c modify show_sig_lines() function to call graph_show_oneline()
after each line of gpg information it has printed in order to preserve
the level of indentation for the next output line.

Reported-by: Jason Pyeron <jpyeron@pdinc.us>
Signed-off-by: Zoltan Klinger <zoltan.klinger@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-07-09 09:37:43 -07:00
Junio C Hamano
a1ddd11452 Merge branch 'cb/log-follow-with-combined'
* cb/log-follow-with-combined:
  fix segfault with git log -c --follow
2013-06-11 13:30:36 -07:00
Clemens Buchacher
46ec510ac0 fix segfault with git log -c --follow
In diff_tree_combined we make a copy of diffopts. In
try_to_follow_renames, called via diff_tree_sha1, we free and
re-initialize diffopts->pathspec->items. Since we did not make a deep
copy of diffopts in diff_tree_combined, the original diffopts does not
get the update. By the time we return from diff_tree_combined,
rev->diffopt->pathspec->items points to an invalid memory address. We
get a segfault next time we try to access that pathspec.

Instead, along with the copy of diffopts, make a copy pathspec->items as
well.

We would also have to make a copy of pathspec->raw to keep it consistent
with pathspec->items, but nobody seems to rely on that.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-28 11:26:24 -07:00
Yann Droneaud
90e76b7029 t4202: use test_config/test_unconfig to set/unset git config variables
Instead of using construct such as:
    test_when_finished "git config --unset <key>"
    git config <key> <value>
uses
    test_config <key> <value>
The latter takes care of removing <key> at the end of the test.

Additionally, instead of
     git config <key> ""
or
     git config --unset <key>
uses
     test_unconfig <key>
The latter doesn't failed if <key> is not defined.

Tests are modified to assume correct (default) configuration at entry,
and to reset the modified configuration variables at the end.

Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-25 08:50:53 -07:00
Junio C Hamano
6cf0a9e9fc Merge branch 'mk/maint-graph-infinity-loop' into maint
* mk/maint-graph-infinity-loop:
  graph.c: infinite loop in git whatchanged --graph -m
2013-01-14 07:32:18 -08:00
Junio C Hamano
4b32367ddc Merge branch 'mk/maint-graph-infinity-loop'
The --graph code fell into infinite loop when asked to do what the
code did not expect.

* mk/maint-graph-infinity-loop:
  graph.c: infinite loop in git whatchanged --graph -m
2013-01-02 10:39:09 -08:00
Jeff King
64b22a5894 Merge branch 'js/format-2047'
Fixes many rfc2047 quoting issues in the output from format-patch.

* js/format-2047:
  format-patch tests: check quoting/encoding in To: and Cc: headers
  format-patch: fix rfc2047 address encoding with respect to rfc822 specials
  format-patch: make rfc2047 encoding more strict
  format-patch: introduce helper function last_line_length()
  format-patch: do not wrap rfc2047 encoded headers too late
  format-patch: do not wrap non-rfc2047 headers too early
  utf8: fix off-by-one wrapping of text
2012-11-09 12:42:32 -05:00
Jan H. Schönherr
14e1a4e1ff utf8: fix off-by-one wrapping of text
The wrapping logic in strbuf_add_wrapped_text() does currently not allow
lines that entirely fill the allowed width, instead it wraps the line one
character too early.

For example, the text "This is the sixth commit." formatted via
"%w(11,1,2)" (wrap at 11 characters, 1 char indent of first line, 2 char
indent of following lines) results in four lines: " This is", "  the",
"  sixth", "  commit." This is wrong, because "  the sixth" is exactly
11 characters long, and thus allowed.

Fix this by allowing the (width+1) character of a line to be a valid
wrapping point if it is a whitespace character.

Signed-off-by: Jan H. Schönherr <schnhrr@cs.tu-berlin.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-18 14:20:49 -07:00
Junio C Hamano
34a4ae55b2 log --grep: use the same helper to set -E/-F options as "git grep"
The command line option parser for "git log -F -E --grep='<ere>'"
did not flip the "fixed" bit, violating the general "last option
wins" principle among conflicting options.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-09 23:21:29 -07:00
Michał Kiedrowicz
656197ad38 graph.c: infinite loop in git whatchanged --graph -m
Running "whatchanged --graph -m" on a simple two-head merges
can fall into infinite loop.

Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-25 11:07:15 -07:00
Junio C Hamano
c2b927932d Merge branch 'mz/cherry-pick-cmdline-order'
"git cherry-pick A C B" used to replay changes in A and then B and
then C if these three commits had committer timestamps in that
order, which is not what the user who said "A C B" naturally expects.

* mz/cherry-pick-cmdline-order:
  cherry-pick/revert: respect order of revisions to pick
  demonstrate broken 'git cherry-pick three one two'
  teach log --no-walk=unsorted, which avoids sorting
2012-09-10 15:42:55 -07:00
Junio C Hamano
7764a3b35c Merge branch 'jc/dotdot-is-parent-directory'
"git log .." errored out saying it is both rev range and a path when
there is no disambiguating "--" is on the command line.  Update the
command line parser to interpret ".." as a path in such a case.

* jc/dotdot-is-parent-directory:
  specifying ranges: we did not mean to make ".." an empty set
2012-09-07 11:09:18 -07:00
Martin von Zweigbergk
ca92e59e30 teach log --no-walk=unsorted, which avoids sorting
When 'git log' is passed the --no-walk option, no revision walk takes
place, naturally. Perhaps somewhat surprisingly, however, the provided
revisions still get sorted by commit date. So e.g 'git log --no-walk
HEAD HEAD~1' and 'git log --no-walk HEAD~1 HEAD' give the same result
(unless the two revisions share the commit date, in which case they
will retain the order given on the command line). As the commit that
introduced --no-walk (8e64006 (Teach revision machinery about
--no-walk, 2007-07-24)) points out, the sorting is intentional, to
allow things like

 git log --abbrev-commit --pretty=oneline --decorate --all --no-walk

to show all refs in order by commit date.

But there are also other cases where the sorting is not wanted, such
as

 <command producing revisions in order> |
       git log --oneline --no-walk --stdin

To accomodate both cases, leave the decision of whether or not to sort
up to the caller, by allowing --no-walk={sorted,unsorted}, defaulting
to 'sorted' for backward-compatibility reasons.

Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-08-30 12:26:50 -07:00