ls-refs performs a single revision walk over the whole ref namespace,
and sends ones that match with one of the given ref prefixes down to the
user.
This can be expensive if there are many refs overall, but the portion of
them covered by the given prefixes is small by comparison.
To attempt to reduce the difference between the number of refs
traversed, and the number of refs sent, only traverse references which
are in the longest common prefix of the given prefixes. This is very
reminiscent of the approach taken in b31e2680c4 (ref-filter.c: find
disjoint pattern prefixes, 2019-06-26) which does an analogous thing for
multi-patterned 'git for-each-ref' invocations.
The callback 'send_ref' is resilient to ignore extra patterns by
discarding any arguments which do not begin with at least one of the
specified prefixes.
Similarly, the code introduced in b31e2680c4 is resilient to stop early
at metacharacters, but we only pass strict prefixes here. At worst we
would return too many results, but the double checking done by send_ref
will throw away anything that doesn't start with something in the prefix
list.
Finally, if no prefixes were provided, then implicitly add the empty
string (which will match all references) since this matches the existing
behavior (see the "no restrictions" comment in "ls-refs.c:ref_match()").
Original-patch-by: Jacob Vosmaer <jacob@gitlab.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Correctly initialize the "prefixes" strvec using strvec_init() instead
of simply zeroing it via the earlier memset().
There's no way to trigger a crash, since the first 'ref-prefix' command
will initialize the strvec via the 'ALLOC_GROW' in 'strvec_push_nodup()'
(the alloc and nr variables are already zero'd, so the call to
ALLOC_GROW is valid).
If no "ref-prefix" command was given, then the call to
'ls-refs.c:ref_match()' will abort early after it reads the zero in
'prefixes->nr'. Likewise, strvec_clear() will only call free() on the
array, which is NULL, so we're safe there, too.
But, all of this is dangerous and requires more reasoning than it would
if we simply called 'strvec_init()', so do that.
Signed-off-by: Jacob Vosmaer <jacob@gitlab.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This function was used in the ref-filter.c code to find the longest
common prefix of among a set of refspecs, and then to iterate all of the
references that descend from that prefix.
A future patch will want to use that same code from ls-refs.c, so
prepare by exposing and moving it to refs.c. Since there is nothing
specific to the ref-filter code here (other than that it was previously
the only caller of this function), this really belongs in the more
generic refs.h header.
The code moved in this patch is identical before and after, with the one
exception of renaming some arguments to be consistent with other
functions exposed in refs.h.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Hotfix for a topic of this cycle.
* ma/maintenance-crontab-fix:
t7900-maintenance: test for magic markers
gc: fix handling of crontab magic markers
git-maintenance.txt: add missing word
Test coverage fix.
* js/no-more-prepare-for-main-in-test:
tests: drop the `PREPARE_FOR_MAIN_BRANCH` prereq
t9902: use `main` as initial branch name
t6302: use `main` as initial branch name
t5703: use `main` as initial branch name
t5510: use `main` as initial branch name
t5505: finalize transitioning to using the branch name `main`
t3205: finalize transitioning to using the branch name `main`
t3203: complete the transition to using the branch name `main`
t3201: finalize transitioning to using the branch name `main`
t3200: finish transitioning to the initial branch name `main`
t1400: use `main` as initial branch name
"git pack-redandant" when there is only one packfile used to crash,
which has been corrected.
* jx/pack-redundant-on-single-pack:
pack-redundant: fix crash when one packfile in repo
The 'linkgit' Asciidoc macro is misspelled as 'linkit' in the
description of 'GIT_SEQUENCE_EDITOR' since the addition of that variable
to git(1) in 902a126eca (doc: mention GIT_SEQUENCE_EDITOR and
'sequence.editor' more, 2020-08-31). Also, it uses two colons instead of
one.
Fix that.
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Comment did not adequately explain how the two loops work
together to achieve the goal of querying for matching of any
negative refspec.
Signed-off-by: Nipunn Koorapati <nipunn@dropbox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The logic added to check for negative pathspec match by c0192df630
(refspec: add support for negative refspecs, 2020-09-30) looks at
refspec->src assuming it is never NULL, however when
remote.origin.push is set to ":", then refspec->src is NULL,
causing a segfault within strcmp.
Tell git to handle matching refspec by adding the needle to the
set of positively matched refspecs, since matching ":" refspecs
match anything as src.
Add test for matching refspec pushes fetch-negative-refspec
both individually and in combination with a negative refspec.
Signed-off-by: Nipunn Koorapati <nipunn@dropbox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we insert our "BEGIN" and "END" markers into the cron table, it's
so that a Git version from many years into the future would be able to
identify this region in the cron table. Let's add a test to make sure
that these markers don't ever change.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
On `git maintenance start`, we add a few entries to the user's cron
table. We wrap our entries using two magic markers, "# BEGIN GIT
MAINTENANCE SCHEDULE" and "# END GIT MAINTENANCE SCHEDULE". At a later
`git maintenance stop`, we will go through the table and remove these
lines. Or rather, we will remove the "BEGIN" marker, the "END" marker
and everything between them.
Alas, we have a bug in how we detect the "END" marker: we don't. As we
loop through all the lines of the crontab, if we are in the "old
region", i.e., the region we're aiming to remove, we make an early
`continue` and don't get as far as checking for the "END" marker. Thus,
once we've seen our "BEGIN", we remove everything until the end of the
file.
Rewrite the logic for identifying these markers. There are four cases
that are mutually exclusive: The current line starts a region or it ends
it, or it's firmly within the region, or it's outside of it (and should
be printed).
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a missing "a" before "bunch".
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes a segmentation fault.
The bug is caused by dereferencing `new_branch_info->commit` when it is
`NULL`, which is the case when the tree-ish argument is actually a tree,
not a commit-ish. This was introduced in 5602b500c3 (builtin/checkout:
fix `git checkout -p HEAD...` bug, 2020-10-07), where we tried to ensure
that the special tree-ish `HEAD...` is handled correctly.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* github/master: (42 commits)
Git 2.30-rc1
git-gui: use gray background for inactive text widgets
Another batch before 2.30-rc1
git-gui: Fix selected text colors
Makefile: conditionally include GIT-VERSION-FILE
git-gui: fix colored label backgrounds when using themed widgets
config.mak.uname: remove old NonStop compatibility settings
diff: correct interaction between --exit-code and -I<pattern>
t/perf: fix test_export() failure with BSD `sed`
style: do not "break" in switch() after "return"
compat-util: pretend that stub setitimer() always succeeds
strmap: make callers of strmap_remove() to call it in void context
doc: mention Python 3.x supports
index-format.txt: document v2 format of file system monitor extension
docs: multi-pack-index: remove note about future 'verify' work
init: provide useful advice about init.defaultBranch
get_default_branch_name(): prepare for showing some advice
branch -m: allow renaming a yet-unborn branch
init: document `init.defaultBranch` better
t7900: use --fixed-value in git-maintenance tests
...
"git diff -I<pattern> -exit-code" should exit with 0 status when
all the changes match the ignored pattern, but it didn't.
* jc/diff-I-status-fix:
diff: correct interaction between --exit-code and -I<pattern>
Our users are going to be trained to prepare for future change of
init.defaultBranch configuration variable.
* js/init-defaultbranch-advice:
init: provide useful advice about init.defaultBranch
get_default_branch_name(): prepare for showing some advice
branch -m: allow renaming a yet-unborn branch
init: document `init.defaultBranch` better
* https://github.com/prati0100/git-gui:
git-gui: use gray background for inactive text widgets
git-gui: Fix selected text colors
Makefile: conditionally include GIT-VERSION-FILE
git-gui: fix colored label backgrounds when using themed widgets
git-gui: ssh-askpass: add a checkbox to show the input text
git-gui: update Russian translation
git-gui: use commit message template
git-gui: Only touch GITGUI_MSG when needed
Set a different background color for selections in inactive widgets.
This inactive color is calculated from the current theme colors to make
sure it works for all themes.
* sh/inactive-background:
git-gui: use gray background for inactive text widgets
This makes it easier to see at a glance which of the four main views has the
keyboard focus.
Signed-off-by: Stefan Haller <stefan@haller-berlin.de>
Signed-off-by: Pratyush Yadav <me@yadavpratyush.com>
