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2017-08-11Merge branch 'jk/rev-list-empty-input'Libravatar Junio C Hamano1-1/+2
"git log --tag=no-such-tag" showed log starting from HEAD, which has been fixed---it now shows nothing. * jk/rev-list-empty-input: revision: do not fallback to default when rev_input_given is set rev-list: don't show usage when we see empty ref patterns revision: add rev_input_given flag t6018: flesh out empty input/output rev-list tests
2017-08-11Merge branch 'jk/reflog-walk'Libravatar Junio C Hamano1-20/+37
Numerous bugs in walking of reflogs via "log -g" and friends have been fixed. * jk/reflog-walk: reflog-walk: apply --since/--until to reflog dates reflog-walk: stop using fake parents rev-list: check reflog_info before showing usage get_revision_1(): replace do-while with an early return log: do not free parents when walking reflog log: clarify comment about reflog cycles revision: disallow reflog walking with revs->limited t1414: document some reflog-walk oddities
2017-08-11Merge branch 'bc/object-id'Libravatar Junio C Hamano1-8/+8
Conversion from uchar[20] to struct object_id continues. * bc/object-id: sha1_name: convert uses of 40 to GIT_SHA1_HEXSZ sha1_name: convert GET_SHA1* flags to GET_OID* sha1_name: convert get_sha1* to get_oid* Convert remaining callers of get_sha1 to get_oid. builtin/unpack-file: convert to struct object_id bisect: convert bisect_checkout to struct object_id builtin/update_ref: convert to struct object_id sequencer: convert to struct object_id remote: convert struct push_cas to struct object_id submodule: convert submodule config lookup to use object_id builtin/merge-tree: convert remaining caller of get_sha1 to object_id builtin/fsck: convert remaining caller of get_sha1 to object_id
2017-08-02revision: do not fallback to default when rev_input_given is setLibravatar Jeff King1-1/+1
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>
2017-08-02revision: add rev_input_given flagLibravatar Jeff King1-0/+1
Normally a caller that invokes setup_revisions() has to check rev.pending to see if anything was actually queued for the traversal. But they can't tell the difference between two cases: 1. The user gave us no tip from which to start a traversal. 2. The user tried to give us tips via --glob, --all, etc, but their patterns ended up being empty. Let's set a flag in the rev_info struct that callers can use to tell the difference. We can set this from the init_all_refs_cb() function. That's a little funny because it's not exactly about initializing the "cb" struct itself. But that function is the common setup place for doing pattern traversals that is used by --glob, --all, etc. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17sha1_name: convert GET_SHA1* flags to GET_OID*Libravatar brian m. carlson1-3/+3
Convert the flags for get_oid_with_context and friends to use "OID" instead of "SHA1" in their names. This transform was made by running the following one-liner on the affected files: perl -pi -e 's/GET_SHA1/GET_OID/g' Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17sha1_name: convert get_sha1* to get_oid*Libravatar brian m. carlson1-5/+5
Now that all the callers of get_sha1 directly or indirectly use struct object_id, rename the functions starting with get_sha1 to start with get_oid. Convert the internals in sha1_name.c to use struct object_id as well, and eliminate explicit length checks where possible. Convert a use of 40 in get_oid_basic to GIT_SHA1_HEXSZ. Outside of sha1_name.c and cache.h, this transition was made with the following semantic patch: @@ expression E1, E2; @@ - get_sha1(E1, E2.hash) + get_oid(E1, &E2) @@ expression E1, E2; @@ - get_sha1(E1, E2->hash) + get_oid(E1, E2) @@ expression E1, E2; @@ - get_sha1_committish(E1, E2.hash) + get_oid_committish(E1, &E2) @@ expression E1, E2; @@ - get_sha1_committish(E1, E2->hash) + get_oid_committish(E1, E2) @@ expression E1, E2; @@ - get_sha1_treeish(E1, E2.hash) + get_oid_treeish(E1, &E2) @@ expression E1, E2; @@ - get_sha1_treeish(E1, E2->hash) + get_oid_treeish(E1, E2) @@ expression E1, E2; @@ - get_sha1_commit(E1, E2.hash) + get_oid_commit(E1, &E2) @@ expression E1, E2; @@ - get_sha1_commit(E1, E2->hash) + get_oid_commit(E1, E2) @@ expression E1, E2; @@ - get_sha1_tree(E1, E2.hash) + get_oid_tree(E1, &E2) @@ expression E1, E2; @@ - get_sha1_tree(E1, E2->hash) + get_oid_tree(E1, E2) @@ expression E1, E2; @@ - get_sha1_blob(E1, E2.hash) + get_oid_blob(E1, &E2) @@ expression E1, E2; @@ - get_sha1_blob(E1, E2->hash) + get_oid_blob(E1, E2) @@ expression E1, E2, E3, E4; @@ - get_sha1_with_context(E1, E2, E3.hash, E4) + get_oid_with_context(E1, E2, &E3, E4) @@ expression E1, E2, E3, E4; @@ - get_sha1_with_context(E1, E2, E3->hash, E4) + get_oid_with_context(E1, E2, E3, E4) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-13Merge branch 'ab/grep-lose-opt-regflags'Libravatar Junio C Hamano1-2/+0
Code cleanup. * ab/grep-lose-opt-regflags: grep: remove redundant REG_NEWLINE when compiling fixed regex grep: remove regflags from the public grep_opt API grep: remove redundant and verbose re-assignments to 0 grep: remove redundant "fixed" field re-assignment to 0 grep: adjust a redundant grep pattern type assignment grep: remove redundant double assignment to 0
2017-07-10Merge branch 'ab/wildmatch'Libravatar Junio C Hamano1-1/+1
Minor code cleanup. * ab/wildmatch: wildmatch: remove unused wildopts parameter
2017-07-09reflog-walk: apply --since/--until to reflog datesLibravatar Jeff King1-3/+16
When doing a reflog walk, we use the commit's date to do any date limiting. In earlier versions of Git, this could lead to nonsense results, since a skipped commit would truncate the traversal. So a sequence like: git commit ... git checkout week-old-branch git checkout - git log -g --since=1.day.ago would stop at the week-old-branch, even though the "git commit" entry further back is still interesting. As of the prior commit, which uses a parent-less traversal of the reflog, you get the whole reflog minus any commits whose dates do not match the specified options. This is arguably useful, as you could scan the reflogs for commits that originated in a certain range. But more likely a user doing a reflog walk wants to limit based on the reflog entries themselves. You can simulate --until with: git log -g @{1.day.ago} but there's no way to ask Git to traverse only back to a certain date. E.g.: # show me reflog entries from the past day git log -g --since=1.day.ago This patch teaches the revision machinery to prefer the reflog entry dates to the commit dates when doing a reflog walk. Technically this is a change in behavior that affects plumbing, but the previous behavior was so buggy that it's unlikely anyone was relying on it. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-09reflog-walk: stop using fake parentsLibravatar Jeff King1-12/+15
The reflog-walk system works by putting a ref's tip into the pending queue, and then "traversing" the reflog by pretending that the parent of each commit is the previous reflog entry. This causes a number of user-visible oddities, as documented in t1414 (and the commit message which introduced it). We can fix all of them in one go by replacing the fake-reflog system with a much simpler one: just keeping a list of reflogs to show, and walking through them entry by entry. The implementation is fairly straight-forward, but there are a few items to note: 1. We obviously must skip calling add_parents_to_list() when we are traversing reflogs, since we do not want to walk the original parents at all. As a result, we must call try_to_simplify_commit() ourselves. There are other parts of add_parents_to_list() we skip, as well, but none of them should matter for a reflog traversal: - We do not allow UNINTERESTING commits, nor symmetric ranges (and we bail when these are used with "-g"). - Using --source makes no sense, since we aren't traversing. The reflog selector shows the same information with more detail. - Using --first-parent is still sensible, since you may want to see the first-parent diff for each entry. But since we're not traversing, we don't need to cull the parent list here. 2. Since we now just walk the reflog entries themselves, rather than starting with the ref tip, we now look at the "new" field of each entry rather than the "old" (i.e., we are showing entries, not faking parents). This removes all of the tricky logic around skipping past root commits. But note that we have no way to show an entry with the null sha1 in its "new" field (because such a commit obviously does not exist). Normally this would not happen, since we delete reflogs along with refs, but there is one special case. When we rename the currently checked out branch, we write two reflog entries into the HEAD log: one where the commit goes away, and another where it comes back. Prior to this commit, we show both entries with identical reflog messages. After this commit, we show only the "comes back" entry. See the update in t3200 which demonstrates this. Arguably either is fine, as the whole double-entry thing is a bit hacky in the first place. And until a recent fix, we truncated the traversal in such a case anyway, which was _definitely_ wrong. 3. We show individual reflogs in order, but choose which reflog to show at each stage based on which has the most recent timestamp. This interleaves the output from multiple reflogs based on date order, which is probably what you'd want with limiting like "-n 30". Note that the implementation aims for simplicity. It does a linear walk over the reflog queue for each commit it pulls, which may perform badly if you interleave an enormous number of reflogs. That seems like an unlikely use case; if we did want to handle it, we could probably keep a priority queue of reflogs, ordered by the timestamp of their current tip entry. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-09get_revision_1(): replace do-while with an early returnLibravatar Jeff King1-6/+5
The get_revision_1() function tries to avoid entering its main loop at all when there are no commits to look at. But it's perfectly safe to call pop_commit() on an empty list (in which case it will return NULL). Switching to an early return from the loop lets us skip repeating the loop condition before we enter the do-while. That will get more important when we start pulling reflog-walk commits from a source besides the revs->commits queue, as that condition will get much more complicated. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-07revision: disallow reflog walking with revs->limitedLibravatar Jeff King1-0/+2
The reflog-walk code doesn't work with limit_list(). That function traverses down the real history graph, not the fake reflog history that get_revision() returns. So it's not going to actually examine all of the commits we're going to show, because we'd add them to the pending list only during the actual traversal. In practice this limitation doesn't really matter, because the options that require list-limiting generally need UNINTERESTING endpoints or symmetric ranges, which already are forbidden for reflog walks. Still, there are likely some corner cases that would behave oddly. We're better off to warn the user that we can't fulfill their request than to generate potentially wrong output. This will also make it easier to refactor the reflog-walking code, because it eliminates a whole area of corner cases we'd have to consider (that already don't work anyway). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-30grep: remove regflags from the public grep_opt APILibravatar Ævar Arnfjörð Bjarmason1-2/+0
Refactor calls to the grep machinery to always pass opt.ignore_case & opt.extended_regexp_option instead of setting the equivalent regflags bits. The bug fixed when making -i work with -P in commit 9e3cbc59d5 ("log: make --regexp-ignore-case work with --perl-regexp", 2017-05-20) was really just plastering over the code smell which this change fixes. The reason for adding the extensive commentary here is that I discovered some subtle complexity in implementing this that really should be called out explicitly to future readers. Before this change we'd rely on the difference between `extended_regexp_option` and `regflags` to serve as a membrane between our preliminary parsing of grep.extendedRegexp and grep.patternType, and what we decided to do internally. Now that those two are the same thing, it's necessary to unset `extended_regexp_option` just before we commit in cases where both of those config variables are set. See 84befcd0a4 ("grep: add a grep.patternType configuration setting", 2012-08-03) for the code and documentation related to that. The explanation of why the if/else branches in grep_commit_pattern_type() are ordered the way they are exists in that commit message, but I think it's worth calling this subtlety out explicitly with a comment for future readers. Even though grep_commit_pattern_type() is the only caller of grep_set_pattern_type_option() it's simpler to reset the extended_regexp_option flag in the latter, since 2/3 branches in the former would otherwise need to reset it, this way we can do it in one place. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-26Merge branch 'mh/packed-ref-store-prep'Libravatar Junio C Hamano1-1/+1
Bugfix for a topic that is (only) in 'master'. * mh/packed-ref-store-prep: for_each_bisect_ref(): don't trim refnames lock_packed_refs(): fix cache validity check
2017-06-23wildmatch: remove unused wildopts parameterLibravatar Ævar Arnfjörð Bjarmason1-1/+1
Remove the unused wildopts placeholder struct from being passed to all wildmatch() invocations, or rather remove all the boilerplate NULL parameters. This parameter was added back in commit 9b3497cab9 ("wildmatch: rename constants and update prototype", 2013-01-01) as a placeholder for future use. Over 4 years later nothing has made use of it, let's just remove it. It can be added in the future if we find some reason to start using such a parameter. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-22Merge branch 'sg/revision-parser-skip-prefix'Libravatar Junio C Hamano1-46/+41
Code clean-up. * sg/revision-parser-skip-prefix: revision.c: use skip_prefix() in handle_revision_pseudo_opt() revision.c: use skip_prefix() in handle_revision_opt() revision.c: stricter parsing of '--early-output' revision.c: stricter parsing of '--no-{min,max}-parents' revision.h: turn rev_info.early_output back into an unsigned int
2017-06-19Merge branch 'bw/object-id'Libravatar Junio C Hamano1-8/+8
Conversion from uchar[20] to struct object_id continues. * bw/object-id: (33 commits) diff: rename diff_fill_sha1_info to diff_fill_oid_info diffcore-rename: use is_empty_blob_oid tree-diff: convert path_appendnew to object_id tree-diff: convert diff_tree_paths to struct object_id tree-diff: convert try_to_follow_renames to struct object_id builtin/diff-tree: cleanup references to sha1 diff-tree: convert diff_tree_sha1 to struct object_id notes-merge: convert write_note_to_worktree to struct object_id notes-merge: convert verify_notes_filepair to struct object_id notes-merge: convert find_notes_merge_pair_ps to struct object_id notes-merge: convert merge_from_diffs to struct object_id notes-merge: convert notes_merge* to struct object_id tree-diff: convert diff_root_tree_sha1 to struct object_id combine-diff: convert find_paths_* to struct object_id combine-diff: convert diff_tree_combined to struct object_id diff: convert diff_flush_patch_id to struct object_id patch-ids: convert to struct object_id diff: finish conversion for prepare_temp_file to struct object_id diff: convert reuse_worktree_file to struct object_id diff: convert fill_filespec to struct object_id ...
2017-06-19Merge branch 'ab/pcre-v2'Libravatar Junio C Hamano1-1/+1
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
2017-06-18for_each_bisect_ref(): don't trim refnamesLibravatar Michael Haggerty1-1/+1
`for_each_bisect_ref()` is called by `for_each_bad_bisect_ref()` with a term "bad". This used to make it call `for_each_ref_in_submodule()` with a prefix "refs/bisect/bad". But the latter is the name of the reference that is being sought, so the empty string was being passed to the callback as the trimmed refname. Moreover, this questionable practice was turned into an error by b9c8e7f2fb prefix_ref_iterator: don't trim too much, 2017-05-22 It makes more sense (and agrees better with the documentation of `--bisect`) for the callers to receive the full reference names. So * Add a new function, `for_each_fullref_in_submodule()`, to the refs API. This plugs a gap in the existing functionality, analogous to `for_each_fullref_in()` but accepting a `submodule` argument. * Change `for_each_bad_bisect_ref()` to call the new function rather than `for_each_ref_in_submodule()`. * Add a test. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-12revision.c: use skip_prefix() in handle_revision_pseudo_opt()Libravatar SZEDER Gábor1-9/+9
Instead of starts_with() and a bunch of magic numbers. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-12revision.c: use skip_prefix() in handle_revision_opt()Libravatar SZEDER Gábor1-25/+23
Instead of starts_with() and a bunch of magic numbers. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-12revision.c: stricter parsing of '--early-output'Libravatar SZEDER Gábor1-10/+7
The parsing of '--early-output' with or without its optional integer argument allowed bogus options like '--early-output-foobarbaz' to slip through and be ignored. Fix it by parsing '--early-output' in the same way as other options with an optional argument are parsed. Furthermore, use strtoul_ui() to parse the optional integer argument and to refuse negative numbers. While at it, use skip_prefix() instead of starts_with() and magic numbers. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-12revision.c: stricter parsing of '--no-{min,max}-parents'Libravatar SZEDER Gábor1-2/+2
These two options are parsed using starts_with(), allowing things like 'git log --no-min-parents-foobarbaz' to succeed. Use strcmp() instead. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-05diff-tree: convert diff_tree_sha1 to struct object_idLibravatar Brandon Williams1-2/+2
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02Merge branch 'ab/grep-preparatory-cleanup'Libravatar Junio C Hamano1-0/+1
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 ...
2017-06-02Merge branch 'jk/diff-blob'Libravatar Junio C Hamano1-104/+139
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
2017-06-02diff: convert diff_change to struct object_idLibravatar Brandon Williams1-3/+3
Convert diff_change to take a struct object_id. In addition convert the function pointer type 'change_fn_t' to also take a struct object_id. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02diff: convert diff_addremove to struct object_idLibravatar Brandon Williams1-2/+2
Convert diff_addremove to take a struct object_id. In addtion convert the function pointer type 'add_remove_fn_t' to also take a struct object_id. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02notes: convert format_display_notes to struct object_idLibravatar brian m. carlson1-1/+1
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-29Merge branch 'jk/ignore-broken-tags-when-ignoring-missing-links'Libravatar Junio C Hamano1-1/+1
Tag objects, which are not reachable from any ref, that point at missing objects were mishandled by "git gc" and friends (they should silently be ignored instead) * jk/ignore-broken-tags-when-ignoring-missing-links: revision.c: ignore broken tags with ignore_missing_links
2017-05-29Merge branch 'bc/object-id'Libravatar Junio C Hamano1-38/+38
Conversion from uchar[20] to struct object_id continues. * bc/object-id: (53 commits) object: convert parse_object* to take struct object_id tree: convert parse_tree_indirect to struct object_id sequencer: convert do_recursive_merge to struct object_id diff-lib: convert do_diff_cache to struct object_id builtin/ls-tree: convert to struct object_id merge: convert checkout_fast_forward to struct object_id sequencer: convert fast_forward_to to struct object_id builtin/ls-files: convert overlay_tree_on_cache to object_id builtin/read-tree: convert to struct object_id sha1_name: convert internals of peel_onion to object_id upload-pack: convert remaining parse_object callers to object_id revision: convert remaining parse_object callers to object_id revision: rename add_pending_sha1 to add_pending_oid http-push: convert process_ls_object and descendants to object_id refs/files-backend: convert many internals to struct object_id refs: convert struct ref_update to use struct object_id ref-filter: convert some static functions to struct object_id Convert struct ref_array_item to struct object_id Convert the verify_pack callback to struct object_id Convert lookup_tag to struct object_id ...
2017-05-26log: add -P as a synonym for --perl-regexpLibravatar Ævar Arnfjörð Bjarmason1-1/+1
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>
2017-05-24handle_revision_arg: record paths for pending objectsLibravatar Jeff King1-11/+21
If the revision parser sees an argument like tree:path, we parse it down to the correct blob (or tree), but throw away the "path" portion. Let's ask get_sha1_with_context() to record it, and pass it along in the pending array. This will let programs like git-diff which rely on the revision-parser show more accurate paths. Note that the implementation is a little tricky; we have to make sure we free oc.path in all code paths. For handle_dotdot(), we can piggy-back on the existing cleanup-wrapper pattern. The real work happens in handle_dotdot_1(), but the handle_dotdot() wrapper makes sure that the path is freed no matter how we exit the function (and for that reason we make sure that the object_context struct is zero'd, so if we fail to even get to the get_sha1_with_context() call, we just end up calling free(NULL)). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: record modes for "a..b" endpointsLibravatar Jeff King1-4/+6
The "a..b" revision syntax was designed to handle commits, so it doesn't bother to record any mode we find while traversing a "tree:path" endpoint. These days "git diff" can diff blobs using either "a:path..b:path" (with dots) or "a:path b:path" (without), but the two behave inconsistently, as the with-dots version fails to notice the mode. Let's teach the dot-dot range parser to record modes; it doesn't cost us anything, and it makes this case work. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: add handle_dotdot() helperLibravatar Jeff King1-75/+102
The handle_revision_arg function is rather long, and a big chunk of it is handling the range operators. Let's pull that out to a separate helper. While we're doing so, we can clean up a few of the rough edges that made the flow hard to follow: - instead of manually restoring *dotdot (that we overwrote with a NUL), do the real work in a sub-helper, which makes it clear that the munge/restore lines are a matched pair - eliminate a goto which wasn't actually used for control flow, but only to avoid duplicating a few lines (instead, those lines are pushed into another helper function) - use early returns instead of deep nesting - consistently name all variables for the left-hand side of the range as "a" (rather than "this" or "from") and the right-hand side as "b" (rather than "next", or using the unadorned "sha1" or "flags" from the main function). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: hoist ".." check out of range parsingLibravatar Jeff King1-14/+10
Since 003c84f6d (specifying ranges: we did not mean to make ".." an empty set, 2011-05-02), we treat the argument ".." specially. We detect it by noticing that both sides of the range are empty, and that this is a non-symmetric two-dot range. While correct, this makes the code overly complicated. We can just detect ".." up front before we try to do further parsing. This avoids having to de-munge the NUL from dotdot, and lets us eliminate an extra const array (which we needed only to do direct pointer comparisons). It also removes the one code path from the range-parsing conditional that requires us to return -1. That will make it simpler to pull the dotdot parsing out into its own function. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: stop using "dotdot" as a generic pointerLibravatar Jeff King1-14/+15
The handle_revision_arg() function has a "dotdot" variable that it uses to find a ".." or "..." in the argument. If we don't find one, we look for other marks, like "^!". But we just keep re-using the "dotdot" variable, which is confusing. Let's introduce a separate "mark" variable that can be used for these other marks. They still reuse the same variable, but at least the name is no longer actively misleading. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: simplify commit reference lookupsLibravatar Jeff King1-6/+2
The "dotdot" range parser avoids calling lookup_commit_reference() if we are directly fed two commits. But its casts are unnecessarily complex; that function will just return a commit we pass into it. Just calling the function all the time is much simpler, and doesn't do any significant extra work (the object is already parsed, and deref_tag() on a non-tag is a noop; we do incur one extra lookup_object() call, but that's fairly trivial). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-24handle_revision_arg: reset "dotdot" consistentlyLibravatar Jeff King1-0/+3
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>
2017-05-23Merge branch 'bc/object-id'Libravatar Junio C Hamano1-38/+38
* bc/object-id: (53 commits) object: convert parse_object* to take struct object_id tree: convert parse_tree_indirect to struct object_id sequencer: convert do_recursive_merge to struct object_id diff-lib: convert do_diff_cache to struct object_id builtin/ls-tree: convert to struct object_id merge: convert checkout_fast_forward to struct object_id sequencer: convert fast_forward_to to struct object_id builtin/ls-files: convert overlay_tree_on_cache to object_id builtin/read-tree: convert to struct object_id sha1_name: convert internals of peel_onion to object_id upload-pack: convert remaining parse_object callers to object_id revision: convert remaining parse_object callers to object_id revision: rename add_pending_sha1 to add_pending_oid http-push: convert process_ls_object and descendants to object_id refs/files-backend: convert many internals to struct object_id refs: convert struct ref_update to use struct object_id ref-filter: convert some static functions to struct object_id Convert struct ref_array_item to struct object_id Convert the verify_pack callback to struct object_id Convert lookup_tag to struct object_id ...
2017-05-21log: make --regexp-ignore-case work with --perl-regexpLibravatar Ævar Arnfjörð Bjarmason1-0/+1
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>
2017-05-20revision.c: ignore broken tags with ignore_missing_linksLibravatar Jeff King1-1/+1
When peeling a tag for prepare_revision_walk(), we do not respect the ignore_missing_links flag. This can lead to a bogus error when pack-objects walks the possibly-broken unreachable-but-recent part of the object graph. The other link-following all happens via traverse_commit_list(), which explains why this case was missed. And our tests covered only broken links from commits. Let's be more comprehensive and cover broken tree entries (which do work) and tags (which shows off this bug). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08object: convert parse_object* to take struct object_idLibravatar brian m. carlson1-6/+6
Make parse_object, parse_object_or_die, and parse_object_buffer take a pointer to struct object_id. Remove the temporary variables inserted earlier, since they are no longer necessary. Transform all of the callers using the following semantic patch: @@ expression E1; @@ - parse_object(E1.hash) + parse_object(&E1) @@ expression E1; @@ - parse_object(E1->hash) + parse_object(E1) @@ expression E1, E2; @@ - parse_object_or_die(E1.hash, E2) + parse_object_or_die(&E1, E2) @@ expression E1, E2; @@ - parse_object_or_die(E1->hash, E2) + parse_object_or_die(E1, E2) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1.hash, E2, E3, E4, E5) + parse_object_buffer(&E1, E2, E3, E4, E5) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1->hash, E2, E3, E4, E5) + parse_object_buffer(E1, E2, E3, E4, E5) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08revision: convert remaining parse_object callers to object_idLibravatar brian m. carlson1-22/+22
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08revision: rename add_pending_sha1 to add_pending_oidLibravatar brian m. carlson1-4/+4
Rename this function and convert it to take a pointer to struct object_id. This is a prerequisite for converting get_reference, which is needed to convert parse_object. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08Convert lookup_tree to struct object_idLibravatar brian m. carlson1-2/+2
Convert the lookup_tree function to take a pointer to struct object_id. The commit was created with manual changes to tree.c, tree.h, and object.c, plus the following semantic patch: @@ @@ - lookup_tree(EMPTY_TREE_SHA1_BIN) + lookup_tree(&empty_tree_oid) @@ expression E1; @@ - lookup_tree(E1.hash) + lookup_tree(&E1) @@ expression E1; @@ - lookup_tree(E1->hash) + lookup_tree(E1) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08Convert lookup_blob to struct object_idLibravatar brian m. carlson1-2/+2
Convert lookup_blob to take a pointer to struct object_id. The commit was created with manual changes to blob.c and blob.h, plus the following semantic patch: @@ expression E1; @@ - lookup_blob(E1.hash) + lookup_blob(&E1) @@ expression E1; @@ - lookup_blob(E1->hash) + lookup_blob(E1) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08Convert lookup_commit* to struct object_idLibravatar brian m. carlson1-4/+4
Convert lookup_commit, lookup_commit_or_die, lookup_commit_reference, and lookup_commit_reference_gently to take struct object_id arguments. Introduce a temporary in parse_object buffer in order to convert this function. This is required since in order to convert parse_object and parse_object_buffer, lookup_commit_reference_gently and lookup_commit_or_die would need to be converted. Not introducing a temporary would therefore require that lookup_commit_or_die take a struct object_id *, but lookup_commit would take unsigned char *, leaving a confusing and hard-to-use interface. parse_object_buffer will lose this temporary in a later patch. This commit was created with manual changes to commit.c, commit.h, and object.c, plus the following semantic patch: @@ expression E1, E2; @@ - lookup_commit_reference_gently(E1.hash, E2) + lookup_commit_reference_gently(&E1, E2) @@ expression E1, E2; @@ - lookup_commit_reference_gently(E1->hash, E2) + lookup_commit_reference_gently(E1, E2) @@ expression E1; @@ - lookup_commit_reference(E1.hash) + lookup_commit_reference(&E1) @@ expression E1; @@ - lookup_commit_reference(E1->hash) + lookup_commit_reference(E1) @@ expression E1; @@ - lookup_commit(E1.hash) + lookup_commit(&E1) @@ expression E1; @@ - lookup_commit(E1->hash) + lookup_commit(E1) @@ expression E1, E2; @@ - lookup_commit_or_die(E1.hash, E2) + lookup_commit_or_die(&E1, E2) @@ expression E1, E2; @@ - lookup_commit_or_die(E1->hash, E2) + lookup_commit_or_die(E1, E2) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08revision: convert prepare_show_merge to struct object_idLibravatar brian m. carlson1-5/+5
This is a caller of lookup_commit_or_die, which we will convert later on. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>