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2020-10-05Merge branch 'ma/worktree-cleanups'Junio C Hamano
Code clean-up. * ma/worktree-cleanups: worktree: use skip_prefix to parse target worktree: rename copy-pasted variable worktree: update renamed variable in comment worktree: inline `worktree_ref()` into its only caller wt-status: introduce wt_status_state_free_buffers() wt-status: print to s->fp, not stdout wt-status: replace sha1 mentions with oid
2020-09-27wt-status: introduce wt_status_state_free_buffers()Martin Ågren
When we have a `struct wt_status_state`, we manually free its `branch`, `onto` and `detached_from`, or sometimes just one or two of them. Provide a function `wt_status_state_free_buffers()` which does the freeing. The callers are still aware of these fields, e.g., they check whether `branch` was populated or not. But this way, they don't need to know about *all* of them, and if `struct wt_status_state` gets more fields, they will not need to learn to free them. Users of `struct wt_status` (which contains a `wt_status_state`) already have `wt_status_collect_free_buffers()` (corresponding to `wt_status_collect()`) which we can also teach to use this new helper. Finally, note that we're currently leaving dangling pointers behind. Some callers work on a stack-allocated struct, where this is obviously ok. But for the users of `run_status()` in builtin/commit.c, there are ample opportunities for someone to mistakenly use those dangling pointers. We seem to be ok for now, but it's a use-after-free waiting to happen. Let's leave NULL-pointers behind instead. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-26ref-filter: plug memory leak in reach_filter()René Scharfe
21bf933928 (ref-filter: allow merged and no-merged filters, 2020-09-15) added an early return to reach_filter(). Avoid leaking the memory of a then unused array by postponing its allocation until we know we need it. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-18ref-filter: make internal reachable-filter API more preciseAaron Lipman
The internal reachable-filter API is a bit loose and imprecise; it also bleeds unnecessarily into the public header. Tighten the API by: * renaming do_merge_filter() to reach_filter() * separating parameters to explicitly identify what data is used by the function instead of passing an entire ref_filter_cbdata struct * renaming and moving internal constants from header to source file Signed-off-by: Aaron Lipman <alipman88@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-16ref-filter: allow merged and no-merged filtersAaron Lipman
Enable ref-filter to process multiple merged and no-merged filters, and extend functionality to git branch, git tag and git for-each-ref. This provides an easy way to check for branches that are "graduation candidates:" $ git branch --no-merged master --merged next If passed more than one merged (or more than one no-merged) filter, refs must be reachable from any one of the merged commits, and reachable from none of the no-merged commits. Signed-off-by: Aaron Lipman <alipman88@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-09Merge branch 'hv/ref-filter-misc'Junio C Hamano
The "--format=" option to the "for-each-ref" command and friends learned a few more tricks, e.g. the ":short" suffix that applies to "objectname" now also can be used for "parent", "tree", etc. * hv/ref-filter-misc: ref-filter: add `sanitize` option for 'subject' atom pretty: refactor `format_sanitized_subject()` ref-filter: add `short` modifier to 'parent' atom ref-filter: add `short` modifier to 'tree' atom ref-filter: rename `objectname` related functions and fields ref-filter: modify error messages in `grab_objectname()` ref-filter: refactor `grab_objectname()` ref-filter: support different email formats
2020-08-31Merge branch 'hv/ref-filter-trailers-atom-parsing-fix'Junio C Hamano
The parser for "git for-each-ref --format=..." was too loose when parsing the "%(trailers...)" atom, and forgot that "trailers" and "trailers:<modifiers>" are the only two allowed forms, which has been corrected. * hv/ref-filter-trailers-atom-parsing-fix: ref-filter: 'contents:trailers' show error if `:` is missing t6300: unify %(trailers) and %(contents:trailers) tests
2020-08-28ref-filter: add `sanitize` option for 'subject' atomHariom Verma
Currently, subject does not take any arguments. This commit introduce `sanitize` formatting option to 'subject' atom. `subject:sanitize` - print sanitized subject line, suitable for a filename. e.g. %(subject): "the subject line" %(subject:sanitize): "the-subject-line" Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: add `short` modifier to 'parent' atomHariom Verma
Sometimes while using 'parent' atom, user might want to see abbrev hash instead of full 40 character hash. Just like 'objectname', it might be convenient for users to have the `:short` and `:short=<length>` option for printing 'parent' hash. Let's introduce `short` option to 'parent' atom. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: add `short` modifier to 'tree' atomHariom Verma
Sometimes while using 'tree' atom, user might want to see abbrev hash instead of full 40 character hash. Just like 'objectname', it might be convenient for users to have the `:short` and `:short=<length>` option for printing 'tree' hash. Let's introduce `short` option to 'tree' atom. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: rename `objectname` related functions and fieldsHariom Verma
In previous commits, we prepared some `objectname` related functions for more generic usage, so that these functions can be used for `tree` and `parent` atom. But the name of some functions and fields may mislead someone. For ex: function `objectname_atom_parser()` implies that it is for atom `objectname`. Let's rename all such functions and fields. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: modify error messages in `grab_objectname()`Hariom Verma
As we plan to use `grab_objectname()` for `tree` and `parent` atom, it's better to parameterize the error messages in the function `grab_objectname()` where "objectname" is hard coded. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: refactor `grab_objectname()`Hariom Verma
Prepares `grab_objectname()` for more generic usage. This change will allow us to reuse `grab_objectname()` for the `tree` and `parent` atoms in a following commit. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-28ref-filter: support different email formatsHariom Verma
Currently, ref-filter only supports printing email with angle brackets. Let's add support for two more email options. - trim : for email without angle brackets. - localpart : for the part before the @ sign out of trimmed email Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-21ref-filter: 'contents:trailers' show error if `:` is missingHariom Verma
The 'contents' atom does not show any error if used with 'trailers' atom and colon is missing before trailers arguments. e.g %(contents:trailersonly) works, while it shouldn't. It is definitely not an expected behavior. Let's fix this bug. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Heba Waly <heba.waly@gmail.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-10Merge branch 'jk/strvec'Junio C Hamano
The argv_array API is useful for not just managing argv but any "vector" (NULL-terminated array) of strings, and has seen adoption to a certain degree. It has been renamed to "strvec" to reduce the barrier to adoption. * jk/strvec: strvec: rename struct fields strvec: drop argv_array compatibility layer strvec: update documention to avoid argv_array strvec: fix indentation in renamed calls strvec: convert remaining callers away from argv_array name strvec: convert more callers away from argv_array name strvec: convert builtin/ callers away from argv_array name quote: rename sq_dequote_to_argv_array to mention strvec strvec: rename files from argv-array to strvec argv-array: rename to strvec argv-array: use size_t for count and alloc
2020-07-31Merge branch 'sk/typofixes' into masterJunio C Hamano
* sk/typofixes: comment: fix spelling mistakes inside comments
2020-07-31strvec: rename struct fieldsJeff King
The "argc" and "argv" names made sense when the struct was argv_array, but now they're just confusing. Let's rename them to "nr" (which we use for counts elsewhere) and "v" (which is rather terse, but reads well when combined with typical variable names like "args.v"). Note that we have to update all of the callers immediately. Playing tricks with the preprocessor is hard here, because we wouldn't want to rewrite unrelated tokens. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-29comment: fix spelling mistakes inside commentsSteve Kemp
This commit fixes a couple of minor spelling mistakes inside comments. Signed-off-by: Steve Kemp <steve@steve.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: convert remaining callers away from argv_array nameJeff King
We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts all of the remaining files, as the resulting diff is reasonably sized. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: rename files from argv-array to strvecJeff King
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-16ref-filter: add support for %(contents:size)Christian Couder
It's useful and efficient to be able to get the size of the contents directly without having to pipe through `wc -c`. Also the result of the following: `git for-each-ref --format='%(contents)' refs/heads/my-branch | wc -c` is off by one as `git for-each-ref` appends a newline character after the contents, which can be seen by comparing its output with the output from `git cat-file`. As with %(contents), %(contents:size) is silently ignored, if a ref points to something other than a commit or a tag: ``` $ git update-ref refs/mytrees/first HEAD^{tree} $ git for-each-ref --format='%(contents)' refs/mytrees/first $ git for-each-ref --format='%(contents:size)' refs/mytrees/first ``` Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-07Merge branch 'es/get-worktrees-unsort'Junio C Hamano
API cleanup for get_worktrees() * es/get-worktrees-unsort: worktree: drop get_worktrees() unused 'flags' argument worktree: drop get_worktrees() special-purpose sorting option
2020-06-22worktree: drop get_worktrees() unused 'flags' argumentEric Sunshine
get_worktrees() accepts a 'flags' argument, however, there are no existing flags (the lone flag GWT_SORT_LINKED was recently retired) and no behavior which can be tweaked. Therefore, drop the 'flags' argument. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-08Merge branch 'jk/for-each-ref-multi-key-sort-fix'Junio C Hamano
"git branch" and other "for-each-ref" variants accepted multiple --sort=<key> options in the increasing order of precedence, but it had a few breakages around "--ignore-case" handling, and tie-breaking with the refname, which have been fixed. * jk/for-each-ref-multi-key-sort-fix: ref-filter: apply fallback refname sort only after all user sorts ref-filter: apply --ignore-case to all sorting keys
2020-05-04ref-filter: apply fallback refname sort only after all user sortsJeff King
Commit 9e468334b4 (ref-filter: fallback on alphabetical comparison, 2015-10-30) taught ref-filter's sort to fallback to comparing refnames. But it did it at the wrong level, overriding the comparison result for a single "--sort" key from the user, rather than after all sort keys have been exhausted. This worked correctly for a single "--sort" option, but not for multiple ones. We'd break any ties in the first key with the refname and never evaluate the second key at all. To make matters even more interesting, we only applied this fallback sometimes! For a field like "taggeremail" which requires a string comparison, we'd truly return the result of strcmp(), even if it was 0. But for numerical "value" fields like "taggerdate", we did apply the fallback. And that's why our multiple-sort test missed this: it uses taggeremail as the main comparison. So let's start by adding a much more rigorous test. We'll have a set of commits expressing every combination of two tagger emails, dates, and refnames. Then we can confirm that our sort is applied with the correct precedence, and we'll be hitting both the string and value comparators. That does show the bug, and the fix is simple: moving the fallback to the outer compare_refs() function, after all ref_sorting keys have been exhausted. Note that in the outer function we don't have an "ignore_case" flag, as it's part of each individual ref_sorting element. It's debatable what such a fallback should do, since we didn't use the user's keys to match. But until now we have been trying to respect that flag, so the least-invasive thing is to try to continue to do so. Since all callers in the current code either set the flag for all keys or for none, we can just pull the flag from the first key. In a hypothetical world where the user really can flip the case-insensitivity of keys separately, we may want to extend the code to distinguish that case from a blanket "--ignore-case". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-05-04ref-filter: apply --ignore-case to all sorting keysJeff King
All of the ref-filter users (for-each-ref, branch, and tag) take an --ignore-case option which makes filtering and sorting case-insensitive. However, this option was applied only to the first element of the ref_sorting list. So: git for-each-ref --ignore-case --sort=refname would do what you expect, but: git for-each-ref --ignore-case --sort=refname --sort=taggername would sort the primary key (taggername) case-insensitively, but sort the refname case-sensitively. We have two options here: - teach callers to set ignore_case on the whole list - replace the ref_sorting list with a struct that contains both the list of sorting keys, as well as options that apply to _all_ keys I went with the first one here, as it gives more flexibility if we later want to let the users set the flag per-key (presumably through some special syntax when defining the key; for now it's all or nothing through --ignore-case). The new test covers this by sorting on both tagger and subject case-insensitively, which should compare "a" and "A" identically, but still sort them before "b" and "B". We'll break ties by sorting on the refname to give ourselves a stable output (this is actually supposed to be done automatically, but there's another bug which will be fixed in the next commit). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-30ref-filter: stop referring to "sha1 array"Jeff King
A comment refers to the "sha1s in the given sha1 array". But this became an oid_array along with everywhere else in 910650d2f8 (Rename sha1_array to oid_array, 2017-03-31). Plus there's an extra line of leftover editing cruft we can drop. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-11Merge branch 'dr/push-remote-ref-update'Junio C Hamano
Code clean-up. * dr/push-remote-ref-update: remote: drop "explicit" parameter from remote_ref_for_branch()
2020-03-03remote: drop "explicit" parameter from remote_ref_for_branch()Jeff King
Commit 9700fae5ee (for-each-ref: let upstream/push report the remote ref name, 2017-11-07) added a remote_ref_for_branch() helper, which is modeled after remote_for_branch(). This includes providing an "explicit" out-parameter that tells the caller whether the remote was configured by the user, or whether we picked a default name like "origin". But unlike remote names, there is no default name when the user didn't configure one. The only way the "explicit" parameter is used by the caller is to use the value returned from the helper when it is set, and use an empty string otherwise, ignoring the returned value from the helper. Let's drop the "explicit" out-parameter, and return NULL when the returned value from the helper should be ignored, to simplify the function interface. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Damien Robert <damien.olivier.robert+git@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-24packed_object_info(): use object_id for returning delta baseJeff King
If a caller sets the object_info.delta_base_sha1 to a non-NULL pointer, we'll write the oid of the object's delta base to it. But we can increase our type safety by switching this to a real object_id struct. All of our callers are just pointing into the hash member of an object_id anyway, so there's no inconvenience. Note that we do still keep it as a pointer-to-struct, because the NULL sentinel value tells us whether the caller is even interested in the information. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-15Merge branch 'ew/hashmap'Junio C Hamano
Code clean-up of the hashmap API, both users and implementation. * ew/hashmap: hashmap_entry: remove first member requirement from docs hashmap: remove type arg from hashmap_{get,put,remove}_entry OFFSETOF_VAR macro to simplify hashmap iterators hashmap: introduce hashmap_free_entries hashmap: hashmap_{put,remove} return hashmap_entry * hashmap: use *_entry APIs for iteration hashmap_cmp_fn takes hashmap_entry params hashmap_get{,_from_hash} return "struct hashmap_entry *" hashmap: use *_entry APIs to wrap container_of hashmap_get_next returns "struct hashmap_entry *" introduce container_of macro hashmap_put takes "struct hashmap_entry *" hashmap_remove takes "const struct hashmap_entry *" hashmap_get takes "const struct hashmap_entry *" hashmap_add takes "struct hashmap_entry *" hashmap_get_next takes "const struct hashmap_entry *" hashmap_entry_init takes "struct hashmap_entry *" packfile: use hashmap_entry in delta_base_cache_entry coccicheck: detect hashmap_entry.hash assignment diff: use hashmap_entry_init on moved_entry.ent
2019-10-07hashmap_entry: remove first member requirement from docsEric Wong
Comments stating that "struct hashmap_entry" must be the first member in a struct are no longer valid. Suggested-by: Phillip Wood <phillip.wood123@gmail.com> Signed-off-by: Eric Wong <e@80x24.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07hashmap: introduce hashmap_free_entriesEric Wong
`hashmap_free_entries' behaves like `container_of' and passes the offset of the hashmap_entry struct to the internal `hashmap_free_' function, allowing the function to free any struct pointer regardless of where the hashmap_entry field is located. `hashmap_free' no longer takes any arguments aside from the hashmap itself. Signed-off-by: Eric Wong <e@80x24.org> Reviewed-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07hashmap_cmp_fn takes hashmap_entry paramsEric Wong
Another step in eliminating the requirement of hashmap_entry being the first member of a struct. Signed-off-by: Eric Wong <e@80x24.org> Reviewed-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07hashmap_get{,_from_hash} return "struct hashmap_entry *"Eric Wong
Update callers to use hashmap_get_entry, hashmap_get_entry_from_hash or container_of as appropriate. This is another step towards eliminating the requirement of hashmap_entry being the first field in a struct. Signed-off-by: Eric Wong <e@80x24.org> Reviewed-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07hashmap_add takes "struct hashmap_entry *"Eric Wong
This is less error-prone than "void *" as the compiler now detects invalid types being passed. Signed-off-by: Eric Wong <e@80x24.org> Reviewed-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-07hashmap_entry_init takes "struct hashmap_entry *"Eric Wong
C compilers do type checking to make life easier for us. So rely on that and update all hashmap_entry_init callers to take "struct hashmap_entry *" to avoid future bugs while improving safety and readability. Signed-off-by: Eric Wong <e@80x24.org> Reviewed-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-30Merge branch 'rs/get-tagged-oid'Junio C Hamano
Code cleanup. * rs/get-tagged-oid: use get_tagged_oid() tag: factor out get_tagged_oid()
2019-09-09Merge branch 'mp/for-each-ref-missing-name-or-email'Junio C Hamano
"for-each-ref" and friends that shows refs did not protect themselves against ancient tags that did not record tagger names when asked to show "%(taggername)", which have been corrected. * mp/for-each-ref-missing-name-or-email: ref-filter: initialize empty name or email fields
2019-09-05use get_tagged_oid()René Scharfe
Avoid derefencing ->tagged without checking for NULL by using the convenience wrapper for getting the ID of the tagged object. It die()s when encountering a broken tag instead of segfaulting. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-22ref-filter: initialize empty name or email fieldsMischa POSLAWSKY
Formatting $(taggername) on headerless tags such as v0.99 in Git causes a SIGABRT with error "munmap_chunk(): invalid pointer", because of an oversight in commit f0062d3b74 (ref-filter: free item->value and item->value->s, 2018-10-19). Signed-off-by: Mischa POSLAWSKY <git@shiar.nl> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-19Merge branch 'ma/ref-filter-leakfix'Junio C Hamano
Leakfix. * ma/ref-filter-leakfix: ref-filter: fix memory leak in `free_array_item()`
2019-07-19Merge branch 'tb/ref-filter-multiple-patterns'Junio C Hamano
"git for-each-ref" with multiple patterns have been optimized. * tb/ref-filter-multiple-patterns: ref-filter.c: find disjoint pattern prefixes
2019-07-10ref-filter: fix memory leak in `free_array_item()`Martin Ågren
We treat the `value` pointer as a pointer to a struct and free its `s` field. But `value` is in fact an array of structs. As a result, we only free the first `s` out of `used_atom_cnt`-many and leak the rest. Make sure we free all items in `value`. In the caller, `ref_array_clear()`, this means we need to be careful not to zero `used_atom_cnt` until after we've called `free_array_item()`. We could move just a single line, but let's keep related things close together instead, by first handling `array`, then `used_atom`. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-09Merge branch 'md/sort-detached-head-first'Junio C Hamano
"git branch --list" learned to always output the detached HEAD as the first item (when the HEAD is detached, of course), regardless of the locale. * md/sort-detached-head-first: ref-filter: sort detached HEAD lines firstly
2019-07-09Merge branch 'nb/branch-show-other-worktrees-head'Junio C Hamano
"git branch --list" learned to show branches that are checked out in other worktrees connected to the same repository prefixed with '+', similar to the way the currently checked out branch is shown with '*' in front. * nb/branch-show-other-worktrees-head: branch: add worktree info on verbose output branch: update output to include worktree info ref-filter: add worktreepath atom
2019-06-27ref-filter.c: find disjoint pattern prefixesTaylor Blau
Since cfe004a5a9 (ref-filter: limit traversal to prefix, 2017-05-22), the ref-filter code has sought to limit the traversals to a prefix of the given patterns. That code stopped short of handling more than one pattern, because it means invoking 'for_each_ref_in' multiple times. If we're not careful about which patterns overlap, we will output the same refs multiple times. For instance, consider the set of patterns 'refs/heads/a/*', 'refs/heads/a/b/c', and 'refs/tags/v1.0.0'. If we naïvely ran: for_each_ref_in("refs/heads/a/*", ...); for_each_ref_in("refs/heads/a/b/c", ...); for_each_ref_in("refs/tags/v1.0.0", ...); we would see 'refs/heads/a/b/c' (and everything underneath it) twice. Instead, we want to partition the patterns into disjoint sets, where we know that no ref will be matched by any two patterns in different sets. In the above, these are: - {'refs/heads/a/*', 'refs/heads/a/b/c'}, and - {'refs/tags/v1.0.0'} Given one of these disjoint sets, what is a suitable pattern to pass to 'for_each_ref_in'? One approach is to compute the longest common prefix over all elements in that disjoint set, and let the caller cull out the refs they didn't want. Computing the longest prefix means that in most cases, we won't match too many things the caller would like to ignore. The longest common prefixes of the above are: - {'refs/heads/a/*', 'refs/heads/a/b/c'} -> refs/heads/a/* - {'refs/tags/v1.0.0'} -> refs/tags/v1.0.0 We instead invoke: for_each_ref_in("refs/heads/a/*", ...); for_each_ref_in("refs/tags/v1.0.0", ...); Which provides us with the refs we were looking for with a minimal amount of extra cruft, but never a duplicate of the ref we asked for. Implemented here is an algorithm which accomplishes the above, which works as follows: 1. Lexicographically sort the given list of patterns. 2. Initialize 'prefix' to the empty string, where our goal is to build each element in the above set of longest common prefixes. 3. Consider each pattern in the given set, and emit 'prefix' if it reaches the end of a pattern, or touches a wildcard character. The end of a string is treated as if it precedes a wildcard. (Note that there is some room for future work to detect that, e.g., 'a?b' and 'abc' are disjoint). 4. Otherwise, recurse on step (3) with the slice of the list corresponding to our current prefix (i.e., the subset of patterns that have our prefix as a literal string prefix.) This algorithm is 'O(kn + n log(n))', where 'k' is max(len(pattern)) for each pattern in the list, and 'n' is len(patterns). By discovering this set of interesting patterns, we reduce the runtime of multi-pattern 'git for-each-ref' (and other ref traversals) from O(N) to O(n log(N)), where 'N' is the total number of packed references. Running 'git for-each-ref refs/tags/a refs/tags/b' on a repository with 10,000,000 refs in 'refs/tags/huge-N', my best-of-five times drop from: real 0m5.805s user 0m5.188s sys 0m0.468s to: real 0m0.001s user 0m0.000s sys 0m0.000s On linux.git, the times to dig out two of the latest -rc tags drops from 0.002s to 0.001s, so the change on repositories with fewer tags is much less noticeable. Co-authored-by: Jeff King <peff@peff.net> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-19ref-filter: sort detached HEAD lines firstlyMatthew DeVore
Before this patch, "git branch" would put "(HEAD detached...)" and "(no branch, rebasing...)" lines before all the other branches *in most cases* except for when using Chinese-language messages. zh_CN generally uses a full-width "(" symbol (codepoint FF08) to match the full-width proportions of Chinese characters, and the translated strings we had did use them. This meant that the detached HEAD line would appear after all local refs and even after the remote refs if there were any. AFAIK, it is sometimes not jarring to see the half-width parenthesis in "full-width" text as in the CJK languages, for instance when there are no characters preceding or following the parenthesized text fragment. By removing the parenthesis from the localizable text, we can share strings with wt-status.c and remove a cautionary comment to translators. Remove the ( from the localizable portion of messages so the sorting happens properly regardless of locale. Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-05-08Merge branch 'dr/ref-filter-push-track-fix'Junio C Hamano
%(push:track) token used in the --format option to "git for-each-ref" and friends was not showing the right branch, which has been fixed. * dr/ref-filter-push-track-fix: ref-filter: use correct branch for %(push:track)