With the previous fix 895c5ba3 (revision: do not peel tags used in
range notation, 2013-09-19), handle_revision_arg() that processes
command line arguments for the "git log" family of commands no
longer directly places the object pointed by the tag in the pending
object array when it sees a tag object. We used to place pointee
there after copying the flag bits like UNINTERESTING and
SYMMETRIC_LEFT.
This change meant that any flag that is relevant to later history
traversal must now be propagated to the pointed objects (most often
these are commits) while starting the traversal, which is partly
done by handle_commit() that is called from prepare_revision_walk().
We did propagate UNINTERESTING, but did not do so for others, most
notably SYMMETRIC_LEFT. This caused "git log --left-right v1.0..."
(where "v1.0" is a tag) to start losing the "leftness" from the
commit the tag points at.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git rev-list --objects ^A^{tree} B^{tree}" ought to mean "I want a
list of objects inside B's tree, but please exclude the objects that
appear inside A's tree".
we see the top-level tree marked as uninteresting (i.e. ^A^{tree} in
the above example) and call mark_tree_uninteresting() on it; this
unfortunately prevents us from recursing into the tree and marking
the objects in the tree as uninteresting.
The reason why "git log ^A A" yields an empty set of commits,
i.e. we do not have a similar issue for commits, is because we call
mark_parents_uninteresting() after seeing an uninteresting commit.
The uninteresting-ness of the commit itself does not prevent its
parents from being marked as uninteresting.
Introduce mark_tree_contents_uninteresting() and structure the code
in handle_commit() in such a way that it makes it the responsibility
of the callchain leading to this function to mark commits, trees and
blobs as uninteresting, and also make it the responsibility of the
helpers called from this function to mark objects that are reachable
from them.
Note that this is a very old bug that probably dates back to the day
when "rev-list --objects" was introduced. The line to clear
tree->object.parsed at the end of mark_tree_contents_uninteresting()
can be removed when this fix is merged to the codebase after
6e454b9a (clear parsed flag when we free tree buffers, 2013-06-05).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A range notation "A..B" means exactly the same thing as what "^A B"
means, i.e. the set of commits that are reachable from B but not
from A. But the internal representation after the revision parser
parsed these two notations are subtly different.
- "rev-list ^A B" leaves A and B in the revs->pending.objects[]
array, with the former marked as UNINTERESTING and the revision
traversal machinery propagates the mark to underlying commit
objects A^0 and B^0.
- "rev-list A..B" peels tags and leaves A^0 (marked as
UNINTERESTING) and B^0 in revs->pending.objects[] array before
the traversal machinery kicks in.
This difference usually does not matter, but starts to matter when
the --objects option is used. For example, we see this:
$ git rev-list --objects v1.8.4^1..v1.8.4 | grep $(git rev-parse v1.8.4)
$ git rev-list --objects v1.8.4 ^v1.8.4^1 | grep $(git rev-parse v1.8.4)
04f013dc38 v1.8.4
With the former invocation, the revision traversal machinery never
hears about the tag v1.8.4 (it only sees the result of peeling it,
i.e. the commit v1.8.4^0), and the tag itself does not appear in the
output. The latter does send the tag object itself to the output.
Make the range notation keep the unpeeled objects and feed them to
the traversal machinery to fix this inconsistency.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
Instead of using the hand-rolled initialization sequence,
use grep_init() to populate the necessary bits. This opens
the door to allow the calling commands to optionally read
grep.* configuration variables via git_config() if they
want to.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Notes are shown after commit body. From user perspective it looks
pretty much like commit body and they may assume --grep would search
in that part too.
Make it so.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Similar to --author/--committer which filters commits by author and
committer header fields. --grep-reflog adds a fake "reflog" header to
commit and a grep filter to search on that line.
All rules to --author/--committer apply except no timestamp stripping.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix a long-standing bug in "git log --grep" when multiple "--grep"
are used together with "--all-match" and "--author" or "--committer".
* jc/maint-log-grep-all-match:
t7810-grep: test --all-match with multiple --grep and --author options
t7810-grep: test interaction of multiple --grep and --author options
t7810-grep: test multiple --author with --all-match
t7810-grep: test multiple --grep with and without --all-match
t7810-grep: bring log --grep tests in common form
grep.c: mark private file-scope symbols as static
log: document use of multiple commit limiting options
log --grep/--author: honor --all-match honored for multiple --grep patterns
grep: show --debug output only once
grep: teach --debug option to dump the parse tree
Our "grep" allows complex boolean expressions to be formed to match
each individual line with operators like --and, '(', ')' and --not.
Introduce the "--debug" option to show the parse tree to help people
who want to debug and enhance it.
Also "log" learns "--grep-debug" option to do the same. The command
line parser to the log family is a lot more limited than the general
"git grep" parser, but it has special handling for header matching
(e.g. "--author"), and a parse tree is valuable when working on it.
Note that "--all-match" is *not* any individual node in the parse
tree. It is an instruction to the evaluator to check all the nodes
in the top-level backbone have matched and reject a document as
non-matching otherwise.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"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
"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
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>
We do not want a link to 0{40} object stored anywhere in our objects.
* jk/maint-null-in-trees:
fsck: detect null sha1 in tree entries
do not write null sha1s to on-disk index
diff: do not use null sha1 as a sentinel value
Either end of revision range operator can be omitted to default to HEAD,
as in "origin.." (what did I do since I forked) or "..origin" (what did
they do since I forked). But the current parser interprets ".." as an
empty range "HEAD..HEAD", and worse yet, because ".." does exist on the
filesystem, we get this annoying output:
$ cd Documentation/howto
$ git log .. ;# give me recent commits that touch Documentation/ area.
fatal: ambiguous argument '..': both revision and filename
Use '--' to separate filenames from revisions
Surely we could say "git log ../" or even "git log -- .." to disambiguate,
but we shouldn't have to.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff_setup_done() has historically returned an error code, but lost
the last nonzero return in 943d5b7 (allow diff.renamelimit to be set
regardless of -M/-C, 2006-08-09). The callers were in a pretty
confused state: some actually checked for the return code, and some
did not.
Let it return void, and patch all callers to take this into account.
This conveniently also gets rid of a handful of different(!) error
messages that could never be triggered anyway.
Note that the function can still die().
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The diff code represents paths using the diff_filespec
struct. This struct has a sha1 to represent the sha1 of the
content at that path, as well as a sha1_valid member which
indicates whether its sha1 field is actually useful. If
sha1_valid is not true, then the filespec represents a
working tree file (e.g., for the no-index case, or for when
the index is not up-to-date).
The diff_filespec is only used internally, though. At the
interfaces to the diff subsystem, callers feed the sha1
directly, and we create a diff_filespec from it. It's at
that point that we look at the sha1 and decide whether it is
valid or not; callers may pass the null sha1 as a sentinel
value to indicate that it is not.
We should not typically see the null sha1 coming from any
other source (e.g., in the index itself, or from a tree).
However, a corrupt tree might have a null sha1, which would
cause "diff --patch" to accidentally diff the working tree
version of a file instead of treating it as a blob.
This patch extends the edges of the diff interface to accept
a "sha1_valid" flag whenever we accept a sha1, and to use
that flag when creating a filespec. In some cases, this
means passing the flag through several layers, making the
code change larger than would be desirable.
One alternative would be to simply die() upon seeing
corrupted trees with null sha1s. However, this fix more
directly addresses the problem (while bogus sha1s in a tree
are probably a bad thing, it is really the sentinel
confusion sending us down the wrong code path that is what
makes it devastating). And it means that git is more capable
of examining and debugging these corrupted trees. For
example, you can still "diff --raw" such a tree to find out
when the bogus entry was introduced; you just cannot do a
"--patch" diff (just as you could not with any other
corrupted tree, as we do not have any content to diff).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git log -n 1 -- rarely-touched-path" was spending unnecessary
cycles after showing the first change to find the next one, only to
discard it.
* jk/revision-walk-stop-at-max-count:
revision: avoid work after --max-count is reached
Teaches the object name parser things like a "git describe" output
is always a commit object, "A" in "git log A" must be a committish,
and "A" and "B" in "git log A...B" both must be committish, etc., to
prolong the lifetime of abbreviated object names.
* jc/sha1-name-more: (27 commits)
t1512: match the "other" object names
t1512: ignore whitespaces in wc -l output
rev-parse --disambiguate=<prefix>
rev-parse: A and B in "rev-parse A..B" refer to committish
reset: the command takes committish
commit-tree: the command wants a tree and commits
apply: --build-fake-ancestor expects blobs
sha1_name.c: add support for disambiguating other types
revision.c: the "log" family, except for "show", takes committish
revision.c: allow handle_revision_arg() to take other flags
sha1_name.c: introduce get_sha1_committish()
sha1_name.c: teach lookup context to get_sha1_with_context()
sha1_name.c: many short names can only be committish
sha1_name.c: get_sha1_1() takes lookup flags
sha1_name.c: get_describe_name() by definition groks only commits
sha1_name.c: teach get_short_sha1() a commit-only option
sha1_name.c: allow get_short_sha1() to take other flags
get_sha1(): fix error status regression
sha1_name.c: restructure disambiguation of short names
sha1_name.c: correct misnamed "canonical" and "res"
...
During a revision traversal in which --max-count has been
specified, we decrement a counter for each revision returned
by get_revision. When it hits 0, we typically return NULL
(the exception being if we still have boundary commits to
show).
However, before we check the counter, we call get_revision_1
to get the next commit. This might involve looking at a
large number of commits if we have restricted the traversal
(e.g., we might traverse until we find the next commit whose
diff actually matches a pathspec).
There's no need to make this get_revision_1 call when our
counter runs out. If we are not in --boundary mode, we will
just throw away the result and immediately return NULL. If
we are in --boundary mode, then we will still throw away the
result, and then start showing the boundary commits.
However, as git_revision_1 does not impact the boundary
list, it should not have an impact.
In most cases, avoiding this work will not be especially
noticeable. However, in some cases, it can make a big
difference:
[before]
$ time git rev-list -1 origin Documentation/RelNotes/1.7.11.2.txt
8d141a1d56
real 0m0.301s
user 0m0.280s
sys 0m0.016s
[after]
$ time git rev-list -1 origin Documentation/RelNotes/1.7.11.2.txt
8d141a1d56
real 0m0.010s
user 0m0.008s
sys 0m0.000s
Note that the output is produced almost instantaneously in
the first case, and then git uselessly spends a long time
looking for the next commit to touch that file (but there
isn't one, and we traverse all the way down to the roots).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When "git log" gets "--simplify-merges/by-decoration" together with
"--first-parent", the combination of these options makes the
simplification logic to use in-core commit objects that haven't been
examined for relevance, either producing incorrect result or taking
too long to produce any output. Teach the simplification logic to
ignore commits that the first-parent traversal logic ignored when
both are in effect to work around the issue.
* jc/rev-list-simplify-merges-first-parent:
revision: ignore side parents while running simplify-merges
revision: note the lack of free() in simplify_merges()
revision: "simplify" options imply topo-order sort
"git diff COPYING HEAD:COPYING" gave a nonsense error message that
claimed that the treeish HEAD did not have COPYING in it.
* mm/verify-filename-fix:
verify_filename(): ask the caller to chose the kind of diagnosis
sha1_name: do not trigger detailed diagnosis for file arguments
Add a field to setup_revision_opt structure and allow these callers
to tell the setup_revisions command parsing machinery that short SHA1
it encounters are meant to name committish.
This step does not go all the way to connect the setup_revisions()
to sha1_name.c yet.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The existing "cant_be_filename" that tells the function that the
caller knows the arg is not a path (hence it does not have to be
checked for absense of the file whose name matches it) is made into
a bit in the flag word.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many callers know that the user meant to name a committish by
syntactical positions where the object name appears. Calling this
function allows the machinery to disambiguate shorter-than-unique
abbreviated object names between committish and others.
Note that this does NOT error out when the named object is not a
committish. It is merely to give a hint to the disambiguation
machinery.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The function takes user input string and returns the object name
(binary SHA-1) with mode bits and path when the object was looked
up in a tree.
Additionally give hints to help disambiguation of abbreviated object
names when the caller knows what it is looking for.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There are only two callers, and they will benefit from being able to
pass disambiguation hints to underlying get_sha1_with_context() API
once it happens.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When "--simplify-merges/by-decoration" is given together with
"--first-parent" to "git log", the combination of these options
makes the simplification logic to use in-core commit objects that
haven't been examined for relevance, either producing incorrect
result or taking too long to produce any output. Teach the
simplification logic to ignore commits that the first-parent
traversal logic ignored when both are in effect to work around the
issue.
verify_filename() can be called in two different contexts. Either we
just tried to interpret a string as an object name, and it fails, so
we try looking for a working tree file (i.e. we finished looking at
revs that come earlier on the command line, and the next argument
must be a pathname), or we _know_ that we are looking for a
pathname, and shouldn't even try interpreting the string as an
object name.
For example, with this change, we get:
$ git log COPYING HEAD:inexistant
fatal: HEAD:inexistant: no such path in the working tree.
Use '-- <path>...' to specify paths that do not exist locally.
$ git log HEAD:inexistant
fatal: Path 'inexistant' does not exist in 'HEAD'
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The simplify_merges() function needs to look at all history chain to
find the closest ancestor that is relevant after the simplification,
but after --first-parent traversal, side parents haven't been marked
for relevance (they are irrelevant by definition due to the nature
of first-parent-only traversal) nor culled from the parents list of
resulting commits.
We cannot simply remove these side parents from the parents list, as
the output phase still wants to see the parents. Instead, teach
simplify_one() and its callees to ignore the later parents.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Among the three similar-looking loops that walk singly linked
commit_list, the first one is only peeking and the same list is
later used for real work. Leave a comment not to mistakenly
free its elements there.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code internally runs sort_in_topo_order() already; it is more clear
to spell it out in the option parsing phase, instead of adding a special
case in simplify_merges() function.
There is no need for "commit_list_reverse()" function that only invites
inefficient code.
By René Scharfe
* rs/commit-list-append:
commit: remove commit_list_reverse()
revision: append to list instead of insert and reverse
sequencer: export commit_list_append()
The command line parser choked "git cherry-pick $name" when $name can be
both revision name and a pathname, even though $name can never be a path
in the context of the command.
The issue the patch addresses is real, but the way it is implemented felt
unnecessarily invasive a bit. It may be cleaner for this caller to add
the "--" to the end of the argv_array it passes to setup_revisions().
By Clemens Buchacher
* cb/cherry-pick-rev-path-confusion:
cherry-pick: do not expect file arguments
By using commit_list_insert(), we added new items to the top of the
list and, since this is not the order we want, reversed it afterwards.
Simplify this process by adding new items at the bottom instead,
getting rid of the reversal step.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git push --recurse-submodules" learns to optionally look into the
histories of submodules bound to the superproject and push them out.
By Heiko Voigt
* hv/submodule-recurse-push:
push: teach --recurse-submodules the on-demand option
Refactor submodule push check to use string list instead of integer
Teach revision walking machinery to walk multiple times sequencially
Setting up a revision traversal with many starting points was inefficient
as these were placed in a date-order priority queue one-by-one.
By René Scharfe (3) and Junio C Hamano (1)
* rs/commit-list-sort-in-batch:
mergesort: rename it to llist_mergesort()
revision: insert unsorted, then sort in prepare_revision_walk()
commit: use mergesort() in commit_list_sort_by_date()
add mergesort() for linked lists
If a commit-ish passed to cherry-pick or revert happens to have a file
of the same name, git complains that the argument is ambiguous and
advises to use '--'. To make things worse, the '--' argument is removed
by parse_options, und so passing '--' has no effect.
Instead, always interpret cherry-pick/revert arguments as revisions.
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Speed up prepare_revision_walk() by adding commits without sorting
to the commit_list and at the end sort the list in one go. Thanks
to mergesort() working behind the scenes, this is a lot faster for
large numbers of commits than the current insert sort.
Also introduce and use commit_list_reverse(), to keep the ordering
of commits sharing the same commit date unchanged. That's because
commit_list_insert_by_date() sorts commits with descending date,
but adds later entries with the same date entries last, while
commit_list_insert() always inserts entries at the top. The
following commit_list_sort_by_date() keeps the order of entries
sharing the same date.
Jeff's test case, in a repo with lots of refs, was to run:
# make a new commit on top of HEAD, but not yet referenced
sha1=`git commit-tree HEAD^{tree} -p HEAD </dev/null`
# now do the same "connected" test that receive-pack would do
git rev-list --objects $sha1 --not --all
With a git.git with a ref for each revision, master needs (best of
five):
real 0m2.210s
user 0m2.188s
sys 0m0.016s
And with this patch:
real 0m0.480s
user 0m0.456s
sys 0m0.020s
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Previously it was not possible to iterate revisions twice using the
revision walking api. We add a reset_revision_walk() which clears the
used flags. This allows us to do multiple sequencial revision walks.
We add the appropriate calls to the existing submodule machinery doing
revision walks. This is done to avoid surprises if future code wants to
call these functions more than once during the processes lifetime.
Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By Junio C Hamano (2) and Ramsay Jones (1)
* jc/pickaxe-ignore-case:
ctype.c: Fix a sparse warning
pickaxe: allow -i to search in patch case-insensitively
grep: use static trans-case table
"git log -S<string>" is a useful way to find the last commit in the
codebase that touched the <string>. As it was designed to be used by a
porcelain script to dig the history starting from a block of text that
appear in the starting commit, it never had to look for anything but an
exact match.
When used by an end user who wants to look for the last commit that
removed a string (e.g. name of a variable) that he vaguely remembers,
however, it is useful to support case insensitive match.
When given the "--regexp-ignore-case" (or "-i") option, which originally
was designed to affect case sensitivity of the search done in the commit
log part, e.g. "log --grep", the matches made with -S/-G pickaxe search is
done case insensitively now.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jk/grep-binary-attribute:
grep: pre-load userdiff drivers when threaded
grep: load file data after checking binary-ness
grep: respect diff attributes for binary-ness
grep: cache userdiff_driver in grep_source
grep: drop grep_buffer's "name" parameter
convert git-grep to use grep_source interface
grep: refactor the concept of "grep source" into an object
grep: move sha1-reading mutex into low-level code
grep: make locking flag global
* jk/grep-binary-attribute:
grep: pre-load userdiff drivers when threaded
grep: load file data after checking binary-ness
grep: respect diff attributes for binary-ness
grep: cache userdiff_driver in grep_source
grep: drop grep_buffer's "name" parameter
convert git-grep to use grep_source interface
grep: refactor the concept of "grep source" into an object
grep: move sha1-reading mutex into low-level code
grep: make locking flag global
Before the grep_source interface existed, grep_buffer was
used by two types of callers:
1. Ones which pulled a file into a buffer, and then wanted
to supply the file's name for the output (i.e.,
git grep).
2. Ones which really just wanted to grep a buffer (i.e.,
git log --grep).
Callers in set (1) should now be using grep_source. Callers
in set (2) always pass NULL for the "name" parameter of
grep_buffer. We can therefore get rid of this now-useless
parameter.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* nd/index-pack-no-recurse:
index-pack: eliminate unlimited recursion in get_base_data()
index-pack: eliminate recursion in find_unresolved_deltas
Eliminate recursion in setting/clearing marks in commit list
