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2018-08-29convert "oidcmp() != 0" to "!oideq()"Libravatar Jeff King1-4/+4
This is the flip side of the previous two patches: checking for a non-zero oidcmp() can be more strictly expressed as inequality. Like those patches, we write "!= 0" in the coccinelle transformation, which covers by isomorphism the more common: if (oidcmp(E1, E2)) As with the previous two patches, this patch can be achieved almost entirely by running "make coccicheck"; the only differences are manual line-wrap fixes to match the original code. There is one thing to note for anybody replicating this, though: coccinelle 1.0.4 seems to miss the case in builtin/tag.c, even though it's basically the same as all the others. Running with 1.0.7 does catch this, so presumably it's just a coccinelle bug that was fixed in the interim. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29convert "oidcmp() == 0" to oideq()Libravatar Jeff King1-16/+16
Using the more restrictive oideq() should, in the long run, give the compiler more opportunities to optimize these callsites. For now, this conversion should be a complete noop with respect to the generated code. The result is also perhaps a little more readable, as it avoids the "zero is equal" idiom. Since it's so prevalent in C, I think seasoned programmers tend not to even notice it anymore, but it can sometimes make for awkward double negations (e.g., we can drop a few !!oidcmp() instances here). This patch was generated almost entirely by the included coccinelle patch. This mechanical conversion should be completely safe, because we check explicitly for cases where oidcmp() is compared to 0, which is what oideq() is doing under the hood. Note that we don't have to catch "!oidcmp()" separately; coccinelle's standard isomorphisms make sure the two are treated equivalently. I say "almost" because I did hand-edit the coccinelle output to fix up a few style violations (it mostly keeps the original formatting, but sometimes unwraps long lines). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29coccinelle: use <...> for function exclusionLibravatar Jeff King1-1/+1
Sometimes we want to suppress a coccinelle transformation inside a particular function. For example, in finding conversions of hashcmp() to oidcmp(), we should not convert the call in oidcmp() itself, since that would cause infinite recursion. We write that like this: @@ identifier f != oidcmp; expression E1, E2; @@ f(...) {... - hashcmp(E1->hash, E2->hash) + oidcmp(E1, E2) ...} to match the interior of any function _except_ oidcmp(). Unfortunately, this doesn't catch all cases (e.g., the one in sequencer.c that this patch fixes). The problem, as explained by one of the Coccinelle developers in [1], is: For transformation, A ... B requires that B occur on every execution path starting with A, unless that execution path ends up in error handling code. (eg, if (...) { ... return; }). Here your A is the start of the function. So you need a call to hashcmp on every path through the function, which fails when you add ifs. [...] Another issue with A ... B is that by default A and B should not appear in the matched region. So your original rule matches only the case where every execution path contains exactly one call to hashcmp, not more than one. One way to solve this is to put the pattern inside an angle-bracket pattern like "<... P ...>", which allows zero or more matches of P. That works (and is what this patch does), but it has one drawback: it matches more than we care about, and Coccinelle uses extra CPU. Here are timings for "make coccicheck" before and after this patch: [before] real 1m27.122s user 7m34.451s sys 0m37.330s [after] real 2m18.040s user 10m58.310s sys 0m41.549s That's not ideal, but it's more important for this to be correct than to be fast. And coccicheck is already fairly slow (and people don't run it for every single patch). So it's an acceptable tradeoff. There _is_ a better way to do it, which is to record the position at which we find hashcmp(), and then check it against the forbidden function list. Like: @@ position p : script:python() { p[0].current_element != "oidcmp" }; expression E1,E2; @@ - hashcmp@p(E1->hash, E2->hash) + oidcmp(E1, E2) This is only a little slower than the current code, and does the right thing in all cases. Unfortunately, not all builds of Coccinelle include python support (including the ones in Debian). Requiring it may mean that fewer people can easily run the tool, which is worse than it simply being a little slower. We may want to revisit this decision in the future if: - builds with python become more common - we find more uses for python support that tip the cost-benefit analysis But for now this patch sticks with the angle-bracket solution, and converts all existing cocci patches. This fixes only one missed case in the current code, though it makes a much better difference for some new rules I'm adding (converting "!hashcmp()" to "hasheq()" misses over half the possible conversions using the old form). [1] https://public-inbox.org/git/alpine.DEB.2.21.1808240652370.2344@hadrien/ Helped-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-23i18n: fix mistakes in translated stringsLibravatar Jean-Noël Avila1-1/+1
Fix typos and convert a question which does not expect to be replied to a simple advice. Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-20Merge branch 'pw/rebase-i-merge-segv-fix'Libravatar Junio C Hamano1-5/+19
"git rebase -i", when a 'merge <branch>' insn in its todo list fails, segfaulted, which has been (minimally) corrected. * pw/rebase-i-merge-segv-fix: rebase -i: fix SIGSEGV when 'merge <branch>' fails t3430: add conflicting commit
2018-08-20Merge branch 'pw/rebase-i-squash-number-fix'Libravatar Junio C Hamano1-2/+2
When "git rebase -i" is told to squash two or more commits into one, it labeled the log message for each commit with its number. It correctly called the first one "1st commit", but the next one was "commit #1", which was off-by-one. This has been corrected. * pw/rebase-i-squash-number-fix: rebase -i: fix numbering in squash message
2018-08-20Merge branch 'nd/no-the-index'Libravatar Junio C Hamano1-2/+2
The more library-ish parts of the codebase learned to work on the in-core index-state instance that is passed in by their callers, instead of always working on the singleton "the_index" instance. * nd/no-the-index: (24 commits) blame.c: remove implicit dependency on the_index apply.c: remove implicit dependency on the_index apply.c: make init_apply_state() take a struct repository apply.c: pass struct apply_state to more functions resolve-undo.c: use the right index instead of the_index archive-*.c: use the right repository archive.c: avoid access to the_index grep: use the right index instead of the_index attr: remove index from git_attr_set_direction() entry.c: use the right index instead of the_index submodule.c: use the right index instead of the_index pathspec.c: use the right index instead of the_index unpack-trees: avoid the_index in verify_absent() unpack-trees: convert clear_ce_flags* to avoid the_index unpack-trees: don't shadow global var the_index unpack-trees: add a note about path invalidation unpack-trees: remove 'extern' on function declaration ls-files: correct index argument to get_convert_attr_ascii() preload-index.c: use the right index instead of the_index dir.c: remove an implicit dependency on the_index in pathspec code ...
2018-08-20Merge branch 'js/rebase-merges-exec-fix'Libravatar Junio C Hamano1-11/+31
The "--exec" option to "git rebase --rebase-merges" placed the exec commands at wrong places, which has been corrected. * js/rebase-merges-exec-fix: rebase --exec: make it work with --rebase-merges t3430: demonstrate what -r, --autosquash & --exec should do
2018-08-17Merge branch 'es/rebase-i-author-script-fix'Libravatar Junio C Hamano1-15/+24
The "author-script" file "git rebase -i" creates got broken when we started to move the command away from shell script, which is getting fixed now. * es/rebase-i-author-script-fix: sequencer: don't die() on bogus user-edited timestamp sequencer: fix "rebase -i --root" corrupting author header timestamp sequencer: fix "rebase -i --root" corrupting author header timezone sequencer: fix "rebase -i --root" corrupting author header
2018-08-16rebase -i: fix SIGSEGV when 'merge <branch>' failsLibravatar Phillip Wood1-5/+19
If a merge command in the todo list specifies just a branch to merge with no -C/-c argument then item->commit is NULL. This means that if there are merge conflicts error_with_patch() is passed a NULL commit which causes a segmentation fault when make_patch() tries to look it up. This commit implements a minimal fix which fixes the crash and allows the user to successfully commit a conflict resolution with 'git rebase --continue'. It does not write .git/rebase-merge/patch, .git/rebase-merge/stopped-sha or update REBASE_HEAD. To sensibly get the hashes of the merge parents would require refactoring do_merge() to extract the code that parses the merge parents into a separate function which error_with_patch() could then use to write the parents into the stopped-sha file. To create meaningful output make_patch() and 'git rebase --show-current-patch' would also need to be modified to diff the merge parent and merge base in this case. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-15Merge branch 'nd/i18n'Libravatar Junio C Hamano1-13/+15
Many more strings are prepared for l10n. * nd/i18n: (23 commits) transport-helper.c: mark more strings for translation transport.c: mark more strings for translation sha1-file.c: mark more strings for translation sequencer.c: mark more strings for translation replace-object.c: mark more strings for translation refspec.c: mark more strings for translation refs.c: mark more strings for translation pkt-line.c: mark more strings for translation object.c: mark more strings for translation exec-cmd.c: mark more strings for translation environment.c: mark more strings for translation dir.c: mark more strings for translation convert.c: mark more strings for translation connect.c: mark more strings for translation config.c: mark more strings for translation commit-graph.c: mark more strings for translation builtin/replace.c: mark more strings for translation builtin/pack-objects.c: mark more strings for translation builtin/grep.c: mark strings for translation builtin/config.c: mark more strings for translation ...
2018-08-15rebase -i: fix numbering in squash messageLibravatar Phillip Wood1-2/+2
Commit e12a7ef597 ("rebase -i: Handle "combination of <n> commits" with GETTEXT_POISON", 2018-04-27) changed the way that individual commit messages are labelled when squashing commits together. In doing so a regression was introduced where the numbering of the messages is off by one. This commit fixes that and adds a test for the numbering. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-13cache-tree: wrap the_index based wrappers with #ifdefLibravatar Nguyễn Thái Ngọc Duy1-2/+2
This puts update_main_cache_tree() and write_cache_as_tree() in the same group of "index compat" functions that assume the_index implicitly, which should only be used within builtin/ or t/helper. sequencer.c is also updated to not use these functions. As of now, no files outside builtin/ use these functions anymore. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-09rebase --exec: make it work with --rebase-mergesLibravatar Johannes Schindelin1-11/+31
The idea of `--exec` is to append an `exec` call after each `pick`. Since the introduction of fixup!/squash! commits, this idea was extended to apply to "pick, possibly followed by a fixup/squash chain", i.e. an exec would not be inserted between a `pick` and any of its corresponding `fixup` or `squash` lines. The current implementation uses a dirty trick to achieve that: it assumes that there are only pick/fixup/squash commands, and then *inserts* the `exec` lines before any `pick` but the first, and appends a final one. With the todo lists generated by `git rebase --rebase-merges`, this simple implementation shows its problems: it produces the exact wrong thing when there are `label`, `reset` and `merge` commands. Let's change the implementation to do exactly what we want: look for `pick` lines, skip any fixup/squash chains, and then insert the `exec` line. Lather, rinse, repeat. Note: we take pains to insert *before* comment lines whenever possible, as empty commits are represented by commented-out pick lines (and we want to insert a preceding pick's exec line *before* such a line, not afterward). While at it, also add `exec` lines after `merge` commands, because they are similar in spirit to `pick` commands: they add new commits. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-02Merge branch 'bc/sequencer-export-work-tree-as-well'Libravatar Junio C Hamano1-0/+2
"git rebase" started exporting GIT_DIR environment variable and exposing it to hook scripts when part of it got rewritten in C. Instead of matching the old scripted Porcelains' behaviour, compensate by also exporting GIT_WORK_TREE environment as well to lessen the damage. This can harm existing hooks that want to operate on different repository, but the current behaviour is already broken for them anyway. * bc/sequencer-export-work-tree-as-well: sequencer: pass absolute GIT_WORK_TREE to exec commands
2018-08-02Merge branch 'js/rebase-merge-octopus'Libravatar Junio C Hamano1-43/+125
"git rebase --rebase-merges" mode now handles octopus merges as well. * js/rebase-merge-octopus: rebase --rebase-merges: adjust man page for octopus support rebase --rebase-merges: add support for octopus merges merge: allow reading the merge commit message from a file
2018-08-02Merge branch 'sb/object-store-lookup'Libravatar Junio C Hamano1-7/+7
lookup_commit_reference() and friends have been updated to find in-core object for a specific in-core repository instance. * sb/object-store-lookup: (32 commits) commit.c: allow lookup_commit_reference to handle arbitrary repositories commit.c: allow lookup_commit_reference_gently to handle arbitrary repositories tag.c: allow deref_tag to handle arbitrary repositories object.c: allow parse_object to handle arbitrary repositories object.c: allow parse_object_buffer to handle arbitrary repositories commit.c: allow get_cached_commit_buffer to handle arbitrary repositories commit.c: allow set_commit_buffer to handle arbitrary repositories commit.c: migrate the commit buffer to the parsed object store commit-slabs: remove realloc counter outside of slab struct commit.c: allow parse_commit_buffer to handle arbitrary repositories tag: allow parse_tag_buffer to handle arbitrary repositories tag: allow lookup_tag to handle arbitrary repositories commit: allow lookup_commit to handle arbitrary repositories tree: allow lookup_tree to handle arbitrary repositories blob: allow lookup_blob to handle arbitrary repositories object: allow lookup_object to handle arbitrary repositories object: allow object_as_type to handle arbitrary repositories tag: add repository argument to deref_tag tag: add repository argument to parse_tag_buffer tag: add repository argument to lookup_tag ...
2018-07-31sequencer: don't die() on bogus user-edited timestampLibravatar Eric Sunshine1-0/+9
read_author_ident() is careful to handle errors "gently" when parsing "rebase-merge/author-script" by printing a suitable warning and returning NULL; it never die()'s. One possible reason that parsing might fail is that "rebase-merge/author-script" has been hand-edited in such a way which corrupts it or the information it contains. However, read_author_ident() invokes fmt_ident() which is not so careful about failing "gently". It will die() if it encounters a malformed timestamp. Since read_author_ident() doesn't want to die() and since it's dealing with possibly hand-edited data, take care to avoid passing a bogus timestamp to fmt_ident(). A more "correctly engineered" fix would be to add a "gentle" version of fmt_ident(), however, such a change it outside the scope of the bug-fix series. If fmt_ident() ever does grow a "gentle" cousin, then the manual timestamp check added here can be retired. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-31sequencer: fix "rebase -i --root" corrupting author header timestampLibravatar Eric Sunshine1-14/+9
When "git rebase -i --root" creates a new root commit, it corrupts the "author" header's timestamp by prepending a "@": author A U Thor <author@example.com> @1112912773 -0700 The commit parser is very strict about the format of the "author" header, and does not allow a "@" in that position. The "@" comes from GIT_AUTHOR_DATE in "rebase-merge/author-script", signifying a Unix epoch-based timestamp, however, read_author_ident() incorrectly allows it to slip into the commit's "author" header, thus corrupting it. One possible fix would be simply to filter out the "@" when constructing the "author" header timestamp, however, a more correct fix is to parse the GIT_AUTHOR_DATE date (via parse_date()) and format the parsed result into the "author" header. Since "rebase-merge/author-script" may be edited by the user, this approach has the extra benefit of catching other potential timestamp corruption due to hand-editing. We can do better than calling parse_date() ourselves and constructing the "author" header manually, however, by instead taking advantage of fmt_ident() which does this work for us. The benefits of using fmt_ident() are twofold. First, it simplifies the logic considerably by allowing us to avoid the complexity of building the "author" header in parallel with and in the same buffer from which "rebase-merge/author-script" is being parsed. Instead, fmt_ident() is invoked to compose the header after parsing is complete. Second, fmt_ident() is careful to prevent "crud" from polluting the composed ident. As with validating GIT_AUTHOR_DATE, this "crud" avoidance prevents other (possibly hand-edited) bogus author information from "rebase-merge/author-script" from corrupting the commit object. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-31sequencer: fix "rebase -i --root" corrupting author header timezoneLibravatar Eric Sunshine1-1/+6
When "git rebase -i --root" creates a new root commit, it corrupts the "author" header's timezone by repeating the last digit: author A U Thor <author@example.com> @1112912773 -07000 This is due to two bugs. First, write_author_script() neglects to add the closing quote to the value of GIT_AUTHOR_DATE when generating "rebase-merge/author-script". Second, although sq_dequote() correctly diagnoses the missing closing quote, read_author_ident() ignores sq_dequote()'s return value and blindly uses the result of the aborted dequote. sq_dequote() performs dequoting in-place by removing quoting and shifting content downward. When it detects misquoting (lack of closing quote, in this case), it gives up and returns an error without inserting a NUL-terminator at the end of the shifted content, which explains the duplicated last digit in the timezone. (Note that the "@" preceding the timestamp is a separate bug which will be fixed subsequently.) Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-31sequencer: fix "rebase -i --root" corrupting author headerLibravatar Eric Sunshine1-1/+1
When "git rebase -i --root" creates a new root commit (say, by swapping in a different commit for the root), it corrupts the commit's "author" header with trailing garbage: author A U Thor <author@example.com> @1112912773 -07000or@example.com This is a result of read_author_ident() neglecting to NUL-terminate the buffer into which it composes the "author" header. (Note that the "@" preceding the timestamp and the extra "0" in the timezone are separate bugs which will be fixed subsequently.) Security considerations: Construction of the "author" header by read_author_ident() happens in-place and in parallel with parsing the content of "rebase-merge/author-script" which occupies the same buffer. This is possible because the constructed "author" header is always smaller than the content of "rebase-merge/author-script". Despite neglecting to NUL-terminate the constructed "author" header, memory is never accessed (either by read_author_ident() or its caller) beyond the allocated buffer since a NUL-terminator is present at the end of the loaded "rebase-merge/author-script" content, and additional NUL's are inserted as part of the parsing process. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-24Merge branch 'as/sequencer-customizable-comment-char'Libravatar Junio C Hamano1-1/+1
Honor core.commentchar when preparing the list of commits to replay in "rebase -i". * as/sequencer-customizable-comment-char: sequencer: use configured comment character
2018-07-24Merge branch 'jk/empty-pick-fix'Libravatar Junio C Hamano1-4/+8
Handling of an empty range by "git cherry-pick" was inconsistent depending on how the range ended up to be empty, which has been corrected. * jk/empty-pick-fix: sequencer: don't say BUG on bogus input sequencer: handle empty-set cases consistently
2018-07-24Merge branch 'bb/pedantic'Libravatar Junio C Hamano1-2/+2
The codebase has been updated to compile cleanly with -pedantic option. * bb/pedantic: utf8.c: avoid char overflow string-list.c: avoid conversion from void * to function pointer sequencer.c: avoid empty statements at top level convert.c: replace "\e" escapes with "\033". fixup! refs/refs-internal.h: avoid forward declaration of an enum refs/refs-internal.h: avoid forward declaration of an enum fixup! connect.h: avoid forward declaration of an enum connect.h: avoid forward declaration of an enum
2018-07-23sequencer.c: mark more strings for translationLibravatar Nguyễn Thái Ngọc Duy1-12/+14
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-23Update messages in preparation for i18nLibravatar Nguyễn Thái Ngọc Duy1-4/+4
Many messages will be marked for translation in the following commits. This commit updates some of them to be more consistent and reduce diff noise in those commits. Changes are - keep the first letter of die(), error() and warning() in lowercase - no full stop in die(), error() or warning() if it's single sentence messages - indentation - some messages are turned to BUG(), or prefixed with "BUG:" and will not be marked for i18n - some messages are improved to give more information - some messages are broken down by sentence to be i18n friendly (on the same token, combine multiple warning() into one big string) - the trailing \n is converted to printf_ln if possible, or deleted if not redundant - errno_errno() is used instead of explicit strerror() Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-18Merge branch 'en/rebase-i-microfixes'Libravatar Junio C Hamano1-1/+6
* en/rebase-i-microfixes: git-rebase--merge: modernize "git-$cmd" to "git $cmd" Fix use of strategy options with interactive rebases t3418: add testcase showing problems with rebase -i and strategy options
2018-07-18Merge branch 'pw/rebase-i-keep-reword-after-conflict'Libravatar Junio C Hamano1-3/+20
Bugfix for "rebase -i" corner case regression. * pw/rebase-i-keep-reword-after-conflict: sequencer: do not squash 'reword' commits when we hit conflicts
2018-07-18Merge branch 'sb/object-store-grafts'Libravatar Junio C Hamano1-25/+27
The conversion to pass "the_repository" and then "a_repository" throughout the object access API continues. * sb/object-store-grafts: commit: allow lookup_commit_graft to handle arbitrary repositories commit: allow prepare_commit_graft to handle arbitrary repositories shallow: migrate shallow information into the object parser path.c: migrate global git_path_* to take a repository argument cache: convert get_graft_file to handle arbitrary repositories commit: convert read_graft_file to handle arbitrary repositories commit: convert register_commit_graft to handle arbitrary repositories commit: convert commit_graft_pos() to handle arbitrary repositories shallow: add repository argument to is_repository_shallow shallow: add repository argument to check_shallow_file_for_update shallow: add repository argument to register_shallow shallow: add repository argument to set_alternate_shallow_file commit: add repository argument to lookup_commit_graft commit: add repository argument to prepare_commit_graft commit: add repository argument to read_graft_file commit: add repository argument to register_commit_graft commit: add repository argument to commit_graft_pos object: move grafts to object parser object-store: move object access functions to object-store.h
2018-07-16sequencer: pass absolute GIT_WORK_TREE to exec commandsLibravatar brian m. carlson1-0/+2
The sequencer currently passes GIT_DIR, but not GIT_WORK_TREE, to exec commands. In that configuration, we assume that whatever directory we're in is the top level of the work tree, and git rev-parse --show-toplevel responds accordingly. However, when we're in a subdirectory, that isn't correct: we respond with the subdirectory as the top level, resulting in unexpected behavior. Ensure that we pass GIT_WORK_TREE as well as GIT_DIR so that git operations within subdirectories work correctly. Note that we are guaranteed to have a work tree in this case: the relevant sequencer functions are called only from revert, cherry-pick, and rebase--helper; all of these commands require a working tree. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-16sequencer: use configured comment characterLibravatar Aaron Schrab1-1/+1
Use the configured comment character when generating comments about branches in a todo list. Failure to honor this configuration causes a failure to parse the resulting todo list. Setting core.commentChar to "auto" will not be honored here, and the previously configured or default value will be used instead. But, since the todo list will consist of only generated content, there should not be any non-comment lines beginning with that character. Signed-off-by: Aaron Schrab <aaron@schrab.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-11rebase --rebase-merges: add support for octopus mergesLibravatar Johannes Schindelin1-43/+125
Previously, we introduced the `merge` command for use in todo lists, to allow to recreate and modify branch topology. For ease of implementation, and to make review easier, the initial implementation only supported merge commits with exactly two parents. This patch adds support for octopus merges, making use of the just-introduced `-F <file>` option for the `git merge` command: to keep things simple, we spawn a new Git command instead of trying to call a library function, also opening an easier door to enhance `rebase --rebase-merges` to optionally use a merge strategy different from `recursive` for regular merges: this feature would use the same code path as octopus merges and simply spawn a `git merge`. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-11sequencer: don't say BUG on bogus inputLibravatar Jeff King1-2/+4
When cherry-picking a single commit, we go through a special code path that avoids creating a sequencer todo list at all. This path expects our revision parsing to turn up exactly one commit, and dies with a BUG if it doesn't. But it's actually quite easy to fool. For example: $ git cherry-pick --author=no.such.person HEAD error: BUG: expected exactly one commit from walk fatal: cherry-pick failed This isn't a bug; it's just bogus input. The condition to trigger this message actually has two parts: 1. We saw no commits. That's the case in the example above. Let's drop the "BUG" here to make it clear that the input is the problem. And let's also use the phrase "empty commit set passed", which matches what we say when we do a real revision walk and it turns up empty. 2. We saw more than one commit. That one _should_ be impossible to trigger, since we fed at most one tip and provided the no_walk option (and we'll have already expanded options like "--branches" that can turn into multiple tips). If this ever triggers, it's an indication that the conditional added by 7acaaac275 (revert: allow single-pick in the middle of cherry-pick sequence, 2011-12-10) needs to more carefully define the single-pick case. So this can remain a bug, but we'll upgrade it to use the BUG() macro, which would make it easier to detect and analyze if it does trigger. Signed-off-by: Jeff King <peff@peff.net> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-11sequencer: handle empty-set cases consistentlyLibravatar Jeff King1-2/+4
If the user gives us a set that prepare_revision_walk() takes to be empty, like: git cherry-pick base..base then we report an error. It's nonsense, and there's nothing to pick. But if they use revision options that later cull the list, like: git cherry-pick --author=nobody base~2..base then we quietly create an empty todo list and return success. Arguably either behavior is acceptable, but we should definitely be consistent about it. Reporting an error seems to match the original intent, which dates all the way back to 7e2bfd3f99 (revert: allow cherry-picking more than one commit, 2010-06-02). That in turn was trying to match the single-commit case that existed before then (and which continues to issue an error). Signed-off-by: Jeff King <peff@peff.net> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-09sequencer.c: avoid empty statements at top levelLibravatar Beat Bolli1-2/+2
The macro GIT_PATH_FUNC expands to a function definition that ends with a closing brace. Remove two extra semicolons. While at it, fix the example in path.h. Signed-off-by: Beat Bolli <dev+git@drbeat.li> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commitLibravatar Stefan Beller1-2/+2
Add a repository argument to allow callers of lookup_commit to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commit_referenceLibravatar Stefan Beller1-3/+3
Add a repository argument to allow callers of lookup_commit_reference to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29commit: add repository argument to lookup_commit_reference_gentlyLibravatar Stefan Beller1-1/+1
Add a repository argument to allow callers of lookup_commit_reference_gently to be more specific about which repository to handle. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29tree: add repository argument to lookup_treeLibravatar Stefan Beller1-1/+1
Add a repository argument to allow the callers of lookup_tree to be more specific about which repository to act on. This is a small mechanical change; it doesn't change the implementation to handle repositories other than the_repository yet. As with the previous commits, use a macro to catch callers passing a repository other than the_repository at compile time. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-29Merge branch 'sb/object-store-grafts' into sb/object-store-lookupLibravatar Junio C Hamano1-25/+27
* sb/object-store-grafts: commit: allow lookup_commit_graft to handle arbitrary repositories commit: allow prepare_commit_graft to handle arbitrary repositories shallow: migrate shallow information into the object parser path.c: migrate global git_path_* to take a repository argument cache: convert get_graft_file to handle arbitrary repositories commit: convert read_graft_file to handle arbitrary repositories commit: convert register_commit_graft to handle arbitrary repositories commit: convert commit_graft_pos() to handle arbitrary repositories shallow: add repository argument to is_repository_shallow shallow: add repository argument to check_shallow_file_for_update shallow: add repository argument to register_shallow shallow: add repository argument to set_alternate_shallow_file commit: add repository argument to lookup_commit_graft commit: add repository argument to prepare_commit_graft commit: add repository argument to read_graft_file commit: add repository argument to register_commit_graft commit: add repository argument to commit_graft_pos object: move grafts to object parser object-store: move object access functions to object-store.h
2018-06-27Fix use of strategy options with interactive rebasesLibravatar Elijah Newren1-1/+6
git-rebase.sh wrote strategy options to .git/rebase/merge/strategy_opts in the following format: '--ours' '--renormalize' Note the double spaces. git-rebase--interactive uses sequencer.c to parse that file, and sequencer.c used split_cmdline() to get the individual strategy options. After splitting, sequencer.c prefixed each "option" with a double dash, so, concatenating all its options would result in: -- --ours -- --renormalize So, when it ended up calling try_merge_strategy(), that in turn would run git merge-$strategy -- --ours -- --renormalize $merge_base -- $head $remote instead of the expected/desired git merge-$strategy --ours --renormalize $merge_base -- $head $remote Remove the extra spaces so that when it goes through split_cmdline() we end up with the desired command line. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-25Merge branch 'sb/plug-misc-leaks'Libravatar Junio C Hamano1-1/+3
Misc leak plugging. * sb/plug-misc-leaks: sequencer.c: plug mem leak in git_sequencer_config sequencer.c: plug leaks in do_pick_commit submodule--helper: plug mem leak in print_default_remote refs/packed-backend.c: close fd of empty file
2018-06-25Merge branch 'nd/commit-util-to-slab'Libravatar Junio C Hamano1-6/+18
The in-core "commit" object had an all-purpose "void *util" field, which was tricky to use especially in library-ish part of the code. All of the existing uses of the field has been migrated to a more dedicated "commit-slab" mechanism and the field is eliminated. * nd/commit-util-to-slab: commit.h: delete 'util' field in struct commit merge: use commit-slab in merge remote desc instead of commit->util log: use commit-slab in prepare_bases() instead of commit->util show-branch: note about its object flags usage show-branch: use commit-slab for commit-name instead of commit->util name-rev: use commit-slab for rev-name instead of commit->util bisect.c: use commit-slab for commit weight instead of commit->util revision.c: use commit-slab for show_source sequencer.c: use commit-slab to associate todo items to commits sequencer.c: use commit-slab to mark seen commits shallow.c: use commit-slab for commit depth instead of commit->util describe: use commit-slab for commit names instead of commit->util blame: use commit-slab for blame suspects instead of commit->util commit-slab: support shared commit-slab commit-slab.h: code split
2018-06-25sequencer.c: plug mem leak in git_sequencer_configLibravatar Stefan Beller1-0/+1
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-19sequencer: do not squash 'reword' commits when we hit conflictsLibravatar Phillip Wood1-3/+20
Ever since commit 18633e1a22 ("rebase -i: use the rebase--helper builtin", 2017-02-09), when a commit marked as 'reword' in an interactive rebase has conflicts and fails to apply, when the rebase is resumed that commit will be squashed into its parent with its commit message taken. The issue can be understood better by looking at commit 56dc3ab04b ("sequencer (rebase -i): implement the 'edit' command", 2017-01-02), which introduced error_with_patch() for the edit command. For the edit command, it needs to stop the rebase whether or not the patch applies cleanly. If the patch does apply cleanly, then when it resumes it knows it needs to amend all changes into the previous commit. If it does not apply cleanly, then the changes should not be amended. Thus, it passes !res (success of applying the 'edit' commit) to error_with_patch() for the to_amend flag. The problematic line of code actually came from commit 04efc8b57c ("sequencer (rebase -i): implement the 'reword' command", 2017-01-02). Note that to get to this point in the code: * !!res (i.e. patch application failed) * item->command < TODO_SQUASH * item->command != TODO_EDIT * !is_fixup(item->command) [i.e. not squash or fixup] So that means this can only be a failed patch application that is either a pick, revert, or reword. We only need to amend HEAD when rewording the root commit or a commit that has been fast-forwarded, for any of the other cases we want a new commit, so we should not set the to_amend flag. Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Original-patch-by: Elijah Newren <newren@gmail.com> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-18Merge branch 'js/rebase-i-root-fix'Libravatar Junio C Hamano1-1/+1
A regression to "rebase -i --root" introduced during this cycle has been fixed. * js/rebase-i-root-fix: rebase --root: fix amending root commit messages rebase --root: demonstrate a bug while amending root commit messages
2018-06-18rebase --root: fix amending root commit messagesLibravatar Johannes Schindelin1-1/+1
The code path that triggered that "BUG" really does not want to run without an explicit commit message. In the case where we want to amend a commit message, we have an *implicit* commit message, though: the one of the commit to amend. Therefore, this code path should not even be entered. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-04sequencer.c: plug leaks in do_pick_commitLibravatar Stefan Beller1-1/+2
Going to leave, we additionally free the author and commit message and make sure to call update_abort_safety_file(). Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-06-01Merge branch 'js/rebase-recreate-merge'Libravatar Junio C Hamano1-1/+1
Hotfixes. * js/rebase-recreate-merge: sequencer: ensure labels that are object IDs are rewritten git-rebase--interactive: fix copy-paste mistake
2018-06-01Merge branch 'nd/command-list'Libravatar Junio C Hamano1-0/+1
The list of commands with their various attributes were spread across a few places in the build procedure, but it now is getting a bit more consolidated to allow more automation. * nd/command-list: completion: allow to customize the completable command list completion: add and use --list-cmds=alias completion: add and use --list-cmds=nohelpers Move declaration for alias.c to alias.h completion: reduce completable command list completion: let git provide the completable command list command-list.txt: documentation and guide line help: use command-list.txt for the source of guides help: add "-a --verbose" to list all commands with synopsis git: support --list-cmds=list-<category> completion: implement and use --list-cmds=main,others git --list-cmds: collect command list in a string_list git.c: convert --list-* to --list-cmds=* Remove common-cmds.h help: use command-list.h for common command list generate-cmds.sh: export all commands to command-list.h generate-cmds.sh: factor out synopsis extract code