summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2020-03-02Merge branch 'ds/partial-clone-fixes'Libravatar Junio C Hamano2-5/+36
Fix for a bug revealed by a recent change to make the protocol v2 the default. * ds/partial-clone-fixes: partial-clone: avoid fetching when looking for objects partial-clone: demonstrate bugs in partial fetch
2020-03-02Merge branch 'en/t3433-rebase-stat-dirty-failure'Libravatar Junio C Hamano2-2/+53
The merge-recursive machinery failed to refresh the cache entry for a merge result in a couple of places, resulting in an unnecessary merge failure, which has been fixed. * en/t3433-rebase-stat-dirty-failure: merge-recursive: fix the refresh logic in update_file_flags t3433: new rebase testcase documenting a stat-dirty-like failure
2020-03-02Merge branch 'en/rebase-backend'Libravatar Junio C Hamano25-277/+693
"git rebase" has learned to use the merge backend (i.e. the machinery that drives "rebase -i") by default, while allowing "--apply" option to use the "apply" backend (e.g. the moral equivalent of "format-patch piped to am"). The rebase.backend configuration variable can be set to customize. * en/rebase-backend: rebase: rename the two primary rebase backends rebase: change the default backend from "am" to "merge" rebase: make the backend configurable via config setting rebase tests: repeat some tests using the merge backend instead of am rebase tests: mark tests specific to the am-backend with --am rebase: drop '-i' from the reflog for interactive-based rebases git-prompt: change the prompt for interactive-based rebases rebase: add an --am option rebase: move incompatibility checks between backend options a bit earlier git-rebase.txt: add more details about behavioral differences of backends rebase: allow more types of rebases to fast-forward t3432: make these tests work with either am or merge backends rebase: fix handling of restrict_revision rebase: make sure to pass along the quiet flag to the sequencer rebase, sequencer: remove the broken GIT_QUIET handling t3406: simplify an already simple test rebase (interactive-backend): fix handling of commits that become empty rebase (interactive-backend): make --keep-empty the default t3404: directly test the behavior of interest git-rebase.txt: update description of --allow-empty-message
2020-03-02Merge branch 'en/check-ignore'Libravatar Junio C Hamano3-19/+35
"git check-ignore" did not work when the given path is explicitly marked as not ignored with a negative entry in the .gitignore file. * en/check-ignore: check-ignore: fix documentation and implementation to match
2020-03-02Merge branch 'jk/object-filter-with-bitmap'Libravatar Junio C Hamano14-70/+511
The object reachability bitmap machinery and the partial cloning machinery were not prepared to work well together, because some object-filtering criteria that partial clones use inherently rely on object traversal, but the bitmap machinery is an optimization to bypass that object traversal. There however are some cases where they can work together, and they were taught about them. * jk/object-filter-with-bitmap: rev-list --count: comment on the use of count_right++ pack-objects: support filters with bitmaps pack-bitmap: implement BLOB_LIMIT filtering pack-bitmap: implement BLOB_NONE filtering bitmap: add bitmap_unset() function rev-list: use bitmap filters for traversal pack-bitmap: basic noop bitmap filter infrastructure rev-list: allow commit-only bitmap traversals t5310: factor out bitmap traversal comparison rev-list: allow bitmaps when counting objects rev-list: make --count work with --objects rev-list: factor out bitmap-optimized routines pack-bitmap: refuse to do a bitmap traversal with pathspecs rev-list: fallback to non-bitmap traversal when filtering pack-bitmap: fix leak of haves/wants object lists pack-bitmap: factor out type iterator initialization
2020-03-02Merge branch 'jk/push-option-doc-markup-fix'Libravatar Junio C Hamano1-2/+2
Doc markup fix. * jk/push-option-doc-markup-fix: doc/config/push: use longer "--" line for preformatted example
2020-03-02Merge branch 'jk/doc-diff-parallel'Libravatar Junio C Hamano1-1/+1
Update to doc-diff. * jk/doc-diff-parallel: doc-diff: use single-colon rule in rendering Makefile
2020-02-25The seventh batch for 2.26Libravatar Junio C Hamano1-0/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-25Merge branch 'es/doc-mentoring'Libravatar Junio C Hamano1-0/+36
Doc for new contributors. * es/doc-mentoring: MyFirstContribution: rephrase contact info MyFirstContribution: add avenues for getting help
2020-02-25Merge branch 'es/bright-colors'Libravatar Junio C Hamano3-22/+69
The basic 7 colors learned the brighter counterparts (e.g. "brightred"). * es/bright-colors: color.c: alias RGB colors 8-15 to aixterm colors color.c: support bright aixterm colors color.c: refactor color_output arguments
2020-02-25Merge branch 'bw/remote-rename-update-config'Libravatar Junio C Hamano12-90/+305
"git remote rename X Y" needs to adjust configuration variables (e.g. branch.<name>.remote) whose value used to be X to Y. branch.<name>.pushRemote is now also updated. * bw/remote-rename-update-config: remote rename/remove: gently handle remote.pushDefault config config: provide access to the current line number remote rename/remove: handle branch.<name>.pushRemote config values remote: clean-up config callback remote: clean-up by returning early to avoid one indentation pull --rebase/remote rename: document and honor single-letter abbreviations rebase types
2020-02-22partial-clone: avoid fetching when looking for objectsLibravatar Derrick Stolee2-6/+6
When using partial clone, find_non_local_tags() in builtin/fetch.c checks each remote tag to see if its object also exists locally. There is no expectation that the object exist locally, but this function nevertheless triggers a lazy fetch if the object does not exist. This can be extremely expensive when asking for a commit, as we are completely removed from the context of the non-existent object and thus supply no "haves" in the request. 6462d5eb9a (fetch: remove fetch_if_missing=0, 2019-11-05) removed a global variable that prevented these fetches in favor of a bitflag. However, some object existence checks were not updated to use this flag. Update find_non_local_tags() to use OBJECT_INFO_SKIP_FETCH_OBJECT in addition to OBJECT_INFO_QUICK. The _QUICK option only prevents repreparing the pack-file structures. We need to be extremely careful about supplying _SKIP_FETCH_OBJECT when we expect an object to not exist due to updated refs. This resolves a broken test in t5616-partial-clone.sh. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-22partial-clone: demonstrate bugs in partial fetchLibravatar Derrick Stolee1-0/+31
While testing partial clone, I noticed some odd behavior. I was testing a way of running 'git init', followed by manually configuring the remote for partial clone, and then running 'git fetch'. Astonishingly, I saw the 'git fetch' process start asking the server for multiple rounds of pack-file downloads! When tweaking the situation a little more, I discovered that I could cause the remote to hang up with an error. Add two tests that demonstrate these two issues. In the first test, we find that when fetching with blob filters from a repository that previously did not have any tags, the 'git fetch --tags origin' command fails because the server sends "multiple filter-specs cannot be combined". This only happens when using protocol v2. In the second test, we see that a 'git fetch origin' request with several ref updates results in multiple pack-file downloads. This must be due to Git trying to fault-in the objects pointed by the refs. What makes this matter particularly nasty is that this goes through the do_oid_object_info_extended() method, so there are no "haves" in the negotiation. This leads the remote to send every reachable commit and tree from each new ref, providing a quadratic amount of data transfer! This test is fixed if we revert 6462d5eb9a (fetch: remove fetch_if_missing=0, 2019-11-05), but that revert causes other test failures. The real fix will need more care. The tests are ordered in this way because if I swap the test order the tag test will succeed instead of fail. I believe this is because somehow we need the srv.bare repo to not have any tags when we clone, but then have tags in our next fetch. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-19merge-recursive: fix the refresh logic in update_file_flagsLibravatar Elijah Newren2-3/+6
If we need to delete a higher stage entry in the index to place the file at stage 0, then we'll lose that file's stat information. In such situations we may still be able to detect that the file on disk is the version we want (as noted by our comment in the code: /* do not overwrite file if already present */ ), but we do still need to update the mtime since we are creating a new cache_entry for that file. Update the logic used to determine whether we refresh a file's mtime. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-19t3433: new rebase testcase documenting a stat-dirty-like failureLibravatar Elijah Newren1-0/+48
A user discovered a case where they had a stack of 20 simple commits to rebase, and the rebase would succeed in picking the first commit and then error out with a pair of "Could not execute the todo command" and "Your local changes to the following files would be overwritten by merge" messages. Their steps actually made use of the -i flag, but I switched it over to -m to make it simpler to trigger the bug. With that flag, it bisects back to commit 68aa495b590d (rebase: implement --merge via the interactive machinery, 2018-12-11), but that's misleading. If you change the -m flag to --keep-empty, then the problem persists and will bisect back to 356ee4659bb5 (sequencer: try to commit without forking 'git commit', 2017-11-24) After playing with the testcase for a bit, I discovered that added --exec "sleep 1" to the command line makes the rebase succeed, making me suspect there is some kind of discard and reloading of caches that lead us to believe that something is stat dirty, but I didn't succeed in digging any further than that. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-18check-ignore: fix documentation and implementation to matchLibravatar Elijah Newren3-19/+35
check-ignore has two different modes, and neither of these modes has an implementation that matches the documentation. These modes differ in whether they just print paths or whether they also print the final pattern matched by the path. The fix is different for both modes, so I'll discuss both separately. === First (default) mode === The first mode is documented as: For each pathname given via the command-line or from a file via --stdin, check whether the file is excluded by .gitignore (or other input files to the exclude mechanism) and output the path if it is excluded. However, it fails to do this because it did not account for negated patterns. Commands other than check-ignore verify exclusion rules via calling ... -> treat_one_path() -> is_excluded() -> last_matching_pattern() while check-ignore has a call path of the form: ... -> check_ignore() -> last_matching_pattern() The fact that the latter does not include the call to is_excluded() means that it is susceptible to to messing up negated patterns (since that is the only significant thing is_excluded() adds over last_matching_pattern()). Unfortunately, we can't make it just call is_excluded(), because the same codepath is used by the verbose mode which needs to know the matched pattern in question. This brings us to... === Second (verbose) mode === The second mode, known as verbose mode, references the first in the documentation and says: Also output details about the matching pattern (if any) for each given pathname. For precedence rules within and between exclude sources, see gitignore(5). The "Also" means it will print patterns that match the exclude rules as noted for the first mode, and also print which pattern matches. Unless more information is printed than just pathname and pattern (which is not done), this definition is somewhat ill-defined and perhaps even self-contradictory for negated patterns: A path which matches a negated exclude pattern is NOT excluded and thus shouldn't be printed by the former logic, while it certainly does match one of the explicit patterns and thus should be printed by the latter logic. === Resolution == Since the second mode exists to find out which pattern matches given paths, and showing the user a pattern that begins with a '!' is sufficient for them to figure out whether the pattern is excluded, the existing behavior is desirable -- we just need to update the documentation to match the implementation (i.e. it is about printing which pattern is matched by paths, not about showing which paths are excluded). For the first or default mode, users just want to know whether a pattern is excluded. As such, the existing documentation is desirable; change the implementation to match the documented behavior. Finally, also adjust a few tests in t0008 that were caught up by this discrepancy in how negated paths were handled. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-18doc-diff: use single-colon rule in rendering MakefileLibravatar Jeff King1-1/+1
When rendering the troff manpages to text via "man", we create an ad-hoc Makefile and feed it to "make". The purpose here is two-fold: - reuse results from a prior interrupted render of the same tree - use make's -j option to build in parallel But the second part doesn't seem to work (at least with my version of GNU make, 4.2.1). It just runs one render at a time. We use a double-colon "all" rule for each file, like: all:: foo foo: ...actual render recipe... all:: bar bar: ...actual render recipe... ...and so on... And it's this double-colon that seems to inhibit the parallelism. We can just switch to a regular single-colon rule. Even though we do have multiple rules for "all" here, we don't have any recipe to execute for "all" (we only care about triggering its dependencies), so the distinction is irrelevant. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-18doc/config/push: use longer "--" line for preformatted exampleLibravatar Jeff King1-2/+2
The example for the push.pushOption config tries to create a preformatted section, but uses only two dashes in its "--" line. In AsciiDoc this is an "open block", with no type; the lines end up jumbled because they're formatted as paragraphs. We need four or more dashes to make it a "listing block" that will respect the linebreaks. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-18rev-list --count: comment on the use of count_right++Libravatar Junio C Hamano1-0/+7
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-17The sixth batch for 2.26Libravatar Junio C Hamano1-29/+15
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-17Merge branch 'es/outside-repo-errmsg-hints'Libravatar Junio C Hamano2-2/+4
Error message clarification. * es/outside-repo-errmsg-hints: prefix_path: show gitdir when arg is outside repo
2020-02-17Merge branch 'jk/doc-credential-helper'Libravatar Junio C Hamano2-91/+88
Docfix. * jk/doc-credential-helper: doc: move credential helper info into gitcredentials(7)
2020-02-17Merge branch 'js/mingw-open-in-gdb'Libravatar Junio C Hamano2-0/+23
Dev support. * js/mingw-open-in-gdb: mingw: add a helper function to attach GDB to the current process
2020-02-17Merge branch 'js/test-unc-fetch'Libravatar Junio C Hamano1-0/+12
Test updates. * js/test-unc-fetch: t5580: test cloning without file://, test fetching via UNC paths
2020-02-17Merge branch 'js/test-avoid-pipe'Libravatar Junio C Hamano2-6/+10
Test clean-up. * js/test-avoid-pipe: t9001, t9116: avoid pipes
2020-02-17Merge branch 'js/test-write-junit-xml-fix'Libravatar Junio C Hamano1-1/+2
Testfix. * js/test-write-junit-xml-fix: tests: fix --write-junit-xml with subshells
2020-02-17Merge branch 'jk/mailinfo-cleanup'Libravatar Junio C Hamano2-25/+52
Code clean-up. * jk/mailinfo-cleanup: mailinfo: factor out some repeated header handling mailinfo: be more liberal with header whitespace mailinfo: simplify parsing of header values mailinfo: treat header values as C strings
2020-02-17Merge branch 'mr/show-config-scope'Libravatar Junio C Hamano10-139/+248
"git config" learned to show in which "scope", in addition to in which file, each config setting comes from. * mr/show-config-scope: config: add '--show-scope' to print the scope of a config value submodule-config: add subomdule config scope config: teach git_config_source to remember its scope config: preserve scope in do_git_config_sequence config: clarify meaning of command line scoping config: split repo scope to local and worktree config: make scope_name non-static and rename it t1300: create custom config file without special characters t1300: fix over-indented HERE-DOCs config: fix typo in variable name
2020-02-17Merge branch 'rs/strbuf-insertstr'Libravatar Junio C Hamano11-15/+26
Code clean-up. * rs/strbuf-insertstr: mailinfo: don't insert header prefix for handle_content_type() strbuf: add and use strbuf_insertstr()
2020-02-17Merge branch 'rs/parse-options-concat-dup'Libravatar Junio C Hamano2-26/+18
Code clean-up. * rs/parse-options-concat-dup: parse-options: simplify parse_options_dup() parse-options: const parse_options_concat() parameters parse-options: factor out parse_options_count() parse-options: use COPY_ARRAY in parse_options_concat()
2020-02-17Merge branch 'bc/hash-independent-tests-part-8'Libravatar Junio C Hamano46-279/+1817
Preparation for SHA-256 migration continues. * bc/hash-independent-tests-part-8: (21 commits) t6024: update for SHA-256 t6006: make hash size independent t6000: abstract away SHA-1-specific constants t5703: make test work with SHA-256 t5607: make hash size independent t5318: update for SHA-256 t5515: make test hash independent t5321: make test hash independent t5313: make test hash independent t5309: make test hash independent t5302: make hash size independent t4060: make test work with SHA-256 t4211: add test cases for SHA-256 t4211: move SHA-1-specific test cases into a directory t4013: make test hash independent t3311: make test work with SHA-256 t3310: make test work with SHA-256 t3309: make test work with SHA-256 t3308: make test work with SHA-256 t3206: make hash size independent ...
2020-02-17Merge branch 'rs/name-rev-memsave'Libravatar Junio C Hamano1-64/+127
Memory footprint and performance of "git name-rev" has been improved. * rs/name-rev-memsave: name-rev: sort tip names before applying name-rev: release unused name strings name-rev: generate name strings only if they are better name-rev: pre-size buffer in get_parent_name() name-rev: factor out get_parent_name() name-rev: put struct rev_name into commit slab name-rev: don't _peek() in create_or_update_name() name-rev: don't leak path copy in name_ref() name-rev: respect const qualifier name-rev: remove unused typedef name-rev: rewrite create_or_update_name()
2020-02-16Sync with 2.25.1Libravatar Junio C Hamano1-0/+55
2020-02-16Git 2.25.1Libravatar Junio C Hamano3-2/+57
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: rename the two primary rebase backendsLibravatar Elijah Newren18-168/+166
Two related changes, with separate rationale for each: Rename the 'interactive' backend to 'merge' because: * 'interactive' as a name caused confusion; this backend has been used for many kinds of non-interactive rebases, and will probably be used in the future for more non-interactive rebases than interactive ones given that we are making it the default. * 'interactive' is not the underlying strategy; merging is. * the directory where state is stored is not called .git/rebase-interactive but .git/rebase-merge. Rename the 'am' backend to 'apply' because: * Few users are familiar with git-am as a reference point. * Related to the above, the name 'am' makes sentences in the documentation harder for users to read and comprehend (they may read it as the verb from "I am"); avoiding this difficult places a large burden on anyone writing documentation about this backend to be very careful with quoting and sentence structure and often forces annoying redundancy to try to avoid such problems. * Users stumble over pronunciation ("am" as in "I am a person not a backend" or "am" as in "the first and thirteenth letters in the alphabet in order are "A-M"); this may drive confusion when one user tries to explain to another what they are doing. * While "am" is the tool driving this backend, the tool driving git-am is git-apply, and since we are driving towards lower-level tools for the naming of the merge backend we may as well do so here too. * The directory where state is stored has never been called .git/rebase-am, it was always called .git/rebase-apply. For all the reasons listed above: * Modify the documentation to refer to the backends with the new names * Provide a brief note in the documentation connecting the new names to the old names in case users run across the old names anywhere (e.g. in old release notes or older versions of the documentation) * Change the (new) --am command line flag to --apply * Rename some enums, variables, and functions to reinforce the new backend names for us as well. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: change the default backend from "am" to "merge"Libravatar Elijah Newren4-8/+22
The am-backend drops information and thus limits what we can do: * lack of full tree information from the original commits means we cannot do directory rename detection and warn users that they might want to move some of their new files that they placed in old directories to prevent their becoming orphaned.[1] * reduction in context from only having a few lines beyond those changed means that when context lines are non-unique we can apply patches incorrectly.[2] * lack of access to original commits means that conflict marker annotation has less information available. * the am backend has safety problems with an ill-timed interrupt. Also, the merge/interactive backend have far more abilities, appear to currently have a slight performance advantage[3] and have room for more optimizations than the am backend[4] (and work is underway to take advantage of some of those possibilities). [1] https://lore.kernel.org/git/xmqqh8jeh1id.fsf@gitster-ct.c.googlers.com/ [2] https://lore.kernel.org/git/CABPp-BGiu2nVMQY_t-rnFR5GQUz_ipyEE8oDocKeO+h+t4Mn4A@mail.gmail.com/ [3] https://public-inbox.org/git/CABPp-BF=ev03WgODk6TMQmuNoatg2kiEe5DR__gJ0OTVqHSnfQ@mail.gmail.com/ [4] https://lore.kernel.org/git/CABPp-BGh7yW69QwxQb13K0HM38NKmQif3A6C6UULEKYnkEJ5vA@mail.gmail.com/ Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: make the backend configurable via config settingLibravatar Elijah Newren2-7/+32
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase tests: repeat some tests using the merge backend instead of amLibravatar Elijah Newren2-4/+26
In order to ensure the merge/interactive backend gets similar coverage to the am one, add some tests for cases where previously only the am backend was tested. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase tests: mark tests specific to the am-backend with --amLibravatar Elijah Newren11-53/+53
We have many rebase tests in the testsuite, and often the same test is repeated multiple times just testing different backends. For those tests that were specifically trying to test the am backend, add the --am flag. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: drop '-i' from the reflog for interactive-based rebasesLibravatar Elijah Newren3-10/+10
A large variety of rebase types are supported by the interactive machinery, not just the explicitly interactive ones. These all share the same code and write the same reflog messages, but the "-i" moniker in those messages doesn't really have much meaning. It also becomes somewhat distracting once we switch the default from the am-backend to the interactive one. Just remove the "-i" from these messages. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16git-prompt: change the prompt for interactive-based rebasesLibravatar Elijah Newren2-9/+5
In the past, we had different prompts for different types of rebases: REBASE: for am-based rebases REBASE-m: for merge-based rebases REBASE-i: for interactive-based rebases It's not clear why this distinction was necessary or helpful; when the prompt was added in commit e75201963f67 ("Improve bash prompt to detect various states like an unfinished merge", 2007-09-30), it simply added these three different types. Perhaps there was a useful purpose back then, but there have been some changes: * The merge backend was deleted after being implemented on top of the interactive backend, causing the prompt for merge-based rebases to change from REBASE-m to REBASE-i. * The interactive backend is used for multiple different types of non-interactive rebases, so the "-i" part of the prompt doesn't really mean what it used to. * Rebase backends have gained more abilities and have a great deal of overlap, sometimes making it hard to distinguish them. * Behavioral differences between the backends have also been ironed out. * We want to change the default backend from am to interactive, which means people would get "REBASE-i" by default if we didn't change the prompt, and only if they specified --am or --whitespace or -C would they get the "REBASE" prompt. * In the future, we plan to have "--whitespace", "-C", and even "--am" run the interactive backend once it can handle everything the am-backend can. For all these reasons, make the prompt for any type of rebase just be "REBASE". Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: add an --am optionLibravatar Elijah Newren2-2/+27
Currently, this option doesn't do anything except error out if any options requiring the interactive-backend are also passed. However, when we make the default backend configurable later in this series, this flag will provide a way to override the config setting. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: move incompatibility checks between backend options a bit earlierLibravatar Elijah Newren1-11/+11
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16git-rebase.txt: add more details about behavioral differences of backendsLibravatar Elijah Newren1-5/+80
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: allow more types of rebases to fast-forwardLibravatar Elijah Newren2-4/+16
In the past, we dis-allowed rebases using the interactive backend from performing a fast-forward to short-circuit the rebase operation. This made sense for explicitly interactive rebases and some implicitly interactive rebases, but certainly became overly stringent when the merge backend was re-implemented via the interactive backend. Just as the am-based rebase has always had to disable the fast-forward based on a variety of conditions or flags (e.g. --signoff, --whitespace, etc.), we need to do the same but now with a few more options. However, continuing to use REBASE_FORCE for tracking this is problematic because the interactive backend used it for a different purpose. (When REBASE_FORCE wasn't set, the interactive backend would not fast-forward the whole series but would fast-forward individual "pick" commits at the beginning of the todo list, and then a squash or something would cause it to start generating new commits.) So, introduce a new allow_preemptive_ff flag contained within cmd_rebase() and use it to track whether we are going to allow a pre-emptive fast-forward that short-circuits the whole rebase. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16t3432: make these tests work with either am or merge backendsLibravatar Elijah Newren1-26/+22
t3432 had several stress tests for can_fast_forward(), whose intent was to ensure we were using the optimization of just fast forwarding when possible. However, these tests verified that fast forwards had happened based on the output that rebase printed to the terminal. We can instead test more directly that we actually fast-forwarded by checking the reflog, which also has the side effect of making the tests applicable for the merge/interactive backend. This change does lose the distinction between "noop" and "noop-force", but as stated in commit c9efc216830f ("t3432: test for --no-ff's interaction with fast-forward", 2019-08-27) which introduced that distinction: "These tests aren't supposed to endorse the status quo, just test for what we're currently doing.". This change does not actually run these tests with the merge/interactive backend; instead this is just a preparatory commit. A subsequent commit which fixes can_fast_forward() to work with that backend will then also change t3432 to add tests of that backend as well. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: fix handling of restrict_revisionLibravatar Elijah Newren2-3/+21
restrict_revision in the original shell script was an excluded revision range. It is also treated that way by the am-backend. In the conversion from shell to C (see commit 6ab54d17be3f ("rebase -i: implement the logic to initialize $revisions in C", 2018-08-28)), the interactive-backend accidentally treated it as a positive revision rather than a negated one. This was missed as there were no tests in the testsuite that tested an interactive rebase with fork-point behavior. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase: make sure to pass along the quiet flag to the sequencerLibravatar Elijah Newren2-2/+9
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16rebase, sequencer: remove the broken GIT_QUIET handlingLibravatar Elijah Newren2-8/+4
The GIT_QUIET environment variable was used to signal the non-am backends that the rebase should perform quietly. The preserve-merges backend does not make use of the quiet flag anywhere (other than to write out its state whenever it writes state), and this mechanism was broken in the conversion from shell to C. Since this environment variable was specifically designed for scripts and the only backend that would still use it is no longer a script, just gut this code. A subsequent commit will fix --quiet for the interactive/merge backend in a different way. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-16t3406: simplify an already simple testLibravatar Elijah Newren1-5/+2
When the merge backend was re-implemented on top of the interactive backend, the output of rebase --merge changed a little. This change allowed this test to be simplified, though it wasn't noticed until now. Simplify the testcase a little. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>