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2021-09-28mv: refuse to move sparse pathsLibravatar Derrick Stolee1-0/+186
Since cmd_mv() does not operate on cache entries and instead directly checks the filesystem, we can only use path_in_sparse_checkout() as a mechanism for seeing if a path is sparse or not. Be sure to skip returning a failure if '-k' is specified. To ensure that the advice around sparse paths is the only reason a move failed, be sure to check this as the very last thing before inserting into the src_for_dst list. The tests cover a variety of cases such as whether the target is tracked or untracked, and whether the source or destination are in or outside of the sparse-checkout definition. Helped-by: Matheus Tavares Bernardino <matheus.bernardino@usp.br> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28rm: skip sparse paths with missing SKIP_WORKTREELibravatar Derrick Stolee1-2/+17
If a path does not match the sparse-checkout cone but is somehow missing the SKIP_WORKTREE bit, then 'git rm' currently succeeds in removing the file. One reason a user might be in this situation is a merge conflict outside of the sparse-checkout cone. Removing such a file might be problematic for users who are not sure what they are doing. Add a check to path_in_sparse_checkout() when 'git rm' is checking if a path should be considered for deletion. Of course, this check is ignored if the '--sparse' option is specified, allowing users who accept the risks to continue with the removal. This also removes a confusing behavior where a user asks for a directory to be removed, but only the entries that are within the sparse-checkout definition are removed. Now, 'git rm <dir>' will fail without '--sparse' and will succeed in removing all contained paths with '--sparse'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28rm: add --sparse optionLibravatar Derrick Stolee1-0/+12
As we did previously in 'git add', add a '--sparse' option to 'git rm' that allows modifying paths outside of the sparse-checkout definition. The existing checks in 'git rm' are restricted to tracked files that have the SKIP_WORKTREE bit in the current index. Future changes will cause 'git rm' to reject removing paths outside of the sparse-checkout definition, even if they are untracked or do not have the SKIP_WORKTREE bit. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28add: update --renormalize to skip sparse pathsLibravatar Derrick Stolee1-1/+11
We added checks for path_in_sparse_checkout() to portions of 'git add' that add warnings and prevent stagins a modification, but we skipped the --renormalize mode. Update renormalize_tracked_files() to ignore cache entries whose path is outside of the sparse-checkout cone (unless --sparse is provided). Add a test in t3705. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28add: update --chmod to skip sparse pathsLibravatar Derrick Stolee1-1/+9
We added checks for path_in_sparse_checkout() to portions of 'git add' that add warnings and prevent staging a modification, but we skipped the --chmod mode. Update chmod_pathspec() to ignore cache entries whose path is outside of the sparse-checkout cone (unless --sparse is provided). Add a test in t3705. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28add: implement the --sparse optionLibravatar Derrick Stolee2-19/+27
We previously modified 'git add' to refuse updating index entries outside of the sparse-checkout cone. This is justified to prevent users from accidentally getting into a confusing state when Git removes those files from the working tree at some later point. Unfortunately, this caused some workflows that were previously possible to become impossible, especially around merge conflicts outside of the sparse-checkout cone. These were documented in tests within t1092. We now re-enable these workflows using a new '--sparse' option to 'git add'. This allows users to signal "Yes, I do know what I'm doing with these files," and accept the consequences of the files leaving the worktree later. We delay updating the advice message until implementing a similar option in 'git rm' and 'git mv'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28add: skip tracked paths outside sparse-checkout coneLibravatar Derrick Stolee3-8/+27
When 'git add' adds a tracked file that is outside of the sparse-checkout cone, it checks the SKIP_WORKTREE bit to see if the file exists outside of the sparse-checkout cone. This is usually correct, except in the case of a merge conflict outside of the cone. Modify add_pathspec_matched_against_index() to be more careful about paths by checking the sparse-checkout patterns in addition to the SKIP_WORKTREE bit. This causes 'git add' to no longer allow files outside of the cone that removed the SKIP_WORKTREE bit due to a merge conflict. With only this change, users will only be able to add the file after adding the file to the sparse-checkout cone. A later change will allow users to force adding even though the file is outside of the sparse-checkout cone. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28add: fail when adding an untracked sparse fileLibravatar Derrick Stolee1-9/+28
The add_files() method in builtin/add.c takes a set of untracked files that are being added by the input pathspec and inserts them into the index. If these files are outside of the sparse-checkout cone, then they gain the SKIP_WORKTREE bit at some point. However, this was not checked before inserting into the index, so these files are added even though we want to avoid modifying the index outside of the sparse-checkout cone. Add a check within add_files() for these files and write the advice about files outside of the sparse-checkout cone. This behavior change modifies some existing tests within t1092. These tests intended to document how a user could interact with the existing behavior in place. Many of these tests need to be marked as expecting failure. A future change will allow these tests to pass by adding a flag to 'git add' that allows users to modify index entries outside of the sparse-checkout cone. The 'submodule handling' test is intended to document what happens to directories that contain a submodule when the sparse index is enabled. It is not trying to say that users should be able to add submodules outside of the sparse-checkout cone, so that test can be modified to avoid that operation. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-28t1092: behavior for adding sparse filesLibravatar Derrick Stolee1-0/+28
Add some tests to demonstrate the current behavior around adding files outside of the sparse-checkout cone. Currently, untracked files are handled differently from tracked files. A future change will make these cases be handled the same way. Further expand checking that a failed 'git add' does not stage changes to the index. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-24t3705: test that 'sparse_entry' is unstagedLibravatar Derrick Stolee1-0/+14
The tests in t3705-add-sparse-checkout.sh check to see how 'git add' behaves with paths outside the sparse-checkout definition. These currently check to see if a given warning is present but not that the index is not updated with the sparse entries. Add a new 'test_sparse_entry_unstaged' helper to be sure 'git add' is behaving correctly. We need to modify setup_sparse_entry to actually commit the sparse_entry file so it exists at HEAD and as an entry in the index, but its exact contents are not staged in the index. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09sparse-index: integrate with cherry-pick and rebaseLibravatar Derrick Stolee1-2/+37
The hard work was already done with 'git merge' and the ORT strategy. Just add extra tests to see that we get the expected results in the non-conflict cases. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09t1092: add cherry-pick, rebase testsLibravatar Derrick Stolee1-6/+9
Add tests to check that cherry-pick and rebase behave the same in the sparse-index case as in the full index cases. These tests are agnostic to GIT_TEST_MERGE_ALGORITHM, so a full CI test suite will check both the 'ort' and 'recursive' strategies on this test. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09merge-ort: expand only for out-of-cone conflictsLibravatar Derrick Stolee1-2/+28
Merge conflicts happen often enough to want to avoid expanding a sparse index when they happen, as long as those conflicts are within the sparse-checkout cone. If a conflict exists outside of the sparse-checkout cone, then we still need to expand before iterating over the index entries. This is critical to do in advance because of how the original_cache_nr is tracked to allow inserting and replacing cache entries. Iterate over the conflicted files and check if any paths are outside of the sparse-checkout cone. If so, then expand the full index. Add a test that demonstrates that we do not expand the index, even when we hit a conflict within the sparse-checkout cone. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09merge: make sparse-aware with ORTLibravatar Derrick Stolee1-2/+10
Allow 'git merge' to operate without expanding a sparse index, at least not immediately. The index still will be expanded in a few cases: 1. If the merge strategy is 'recursive', then we enable command_requires_full_index at the start of the merge_recursive() method. We expect sparse-index users to also have the 'ort' strategy enabled. 2. With the 'ort' strategy, if the merge results in a conflicted file, then we expand the index before updating the working tree. The loop that iterates over the worktree replaces index entries and tracks 'origintal_cache_nr' which can become completely wrong if the index expands in the middle of the operation. This safety valve is important before that loop starts. A later change will focus this to only expand if we indeed have a conflict outside of the sparse-checkout cone. 3. Other merge strategies are executed as a 'git merge-X' subcommand, and those strategies are currently protected with the 'command_requires_full_index' guard. Some test updates are required, including a mistaken 'git checkout -b' that did not specify the base branch, causing merges to be fast-forward merges. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07sparse-checkout: clear tracked sparse dirsLibravatar Derrick Stolee1-0/+59
When changing the scope of a sparse-checkout using cone mode, we might have some tracked directories go out of scope. The current logic removes the tracked files from within those directories, but leaves the ignored files within those directories. This is a bit unexpected to users who have given input to Git saying they don't need those directories anymore. This is something that is new to the cone mode pattern type: the user has explicitly said "I want these directories and _not_ those directories." The typical sparse-checkout patterns more generally apply to "I want files with with these patterns" so it is natural to leave ignored files as they are. This focus on directories in cone mode provides us an opportunity to change the behavior. Leaving these ignored files in the sparse directories makes it impossible to gain performance benefits in the sparse index. When we track into these directories, we need to know if the files are ignored or not, which might depend on the _tracked_ .gitignore file(s) within the sparse directory. This depends on the indexed version of the file, so the sparse directory must be expanded. We must take special care to look for untracked, non-ignored files in these directories before deleting them. We do not want to delete any meaningful work that the users were doing in those directories and perhaps forgot to add and commit before switching sparse-checkout definitions. Since those untracked files might be code files that generated ignored build output, also do not delete any ignored files from these directories in that case. The users can recover their state by resetting their sparse-checkout definition to include that directory and continue. Alternatively, they can see the warning that is presented and delete the directory themselves to regain the performance they expect. By deleting the sparse directories when changing scope (or running 'git sparse-checkout reapply') we regain these performance benefits as if the repository was in a clean state. Since these ignored files are frequently build output or helper files from IDEs, the users should not need the files now that the tracked files are removed. If the tracked files reappear, then they will have newer timestamps than the build artifacts, so the artifacts will need to be regenerated anyway. Use the sparse-index as a data structure in order to find the sparse directories that can be safely deleted. Re-expand the index to a full one if it was full before. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07t7519: rewrite sparse index testLibravatar Derrick Stolee1-17/+21
The sparse index is tested with the FS Monitor hook and extension since f8fe49e (fsmonitor: integrate with sparse index, 2021-07-14). This test was very fragile because it shared an index across sparse and non-sparse behavior. Since that expansion and contraction could cause the index to lose its FS Monitor bitmap and token, behavior is fragile to changes in 'git sparse-checkout set'. Rewrite the test to use two clones of the original repo: full and sparse. This allows us to also keep the test files (actual, expect, trace2.txt) out of the repos we are testing with 'git status'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-10Merge branch 'ds/add-with-sparse-index' into ds/sparse-index-ignored-filesLibravatar Junio C Hamano1-9/+58
* ds/add-with-sparse-index: add: remove ensure_full_index() with --renormalize add: ignore outside the sparse-checkout in refresh() pathspec: stop calling ensure_full_index add: allow operating on a sparse-only index t1092: test merge conflicts outside cone
2021-08-06Merge branch 'cb/t7508-regexp-fix'Libravatar Junio C Hamano1-1/+1
* cb/t7508-regexp-fix: t7508: avoid non POSIX BRE
2021-08-06Merge branch 'fc/disable-checkwinsize'Libravatar Junio C Hamano1-0/+6
* fc/disable-checkwinsize: test: fix for COLUMNS and bash 5
2021-08-06test: fix for COLUMNS and bash 5Libravatar Felipe Contreras1-0/+6
Since c49a177bec (test-lib.sh: set COLUMNS=80 for --verbose repeatability, 2021-06-29) multiple tests have been failing when using bash 5 because checkwinsize is enabled by default, therefore COLUMNS is reset using TIOCGWINSZ even for non-interactive shells. It's debatable whether or not bash should even be doing that, but for now we can avoid this undesirable behavior by disabling this option. Reported-by: Fabian Stelzer <fabian.stelzer@campoint.net> Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> [jc: with SZEDER Gábor's suggestion to do this before setting COLUMNS] Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-04Merge branch 'tb/mingw-rmdir-symlink-to-directory'Libravatar Junio C Hamano2-0/+16
Windows rmdir() equivalent behaves differently from POSIX ones in that when used on a symbolic link that points at a directory, the target directory gets removed, which has been corrected. * tb/mingw-rmdir-symlink-to-directory: mingw: align symlinks-related rmdir() behavior with Linux
2021-08-04Merge branch 'ab/getcwd-test'Libravatar Junio C Hamano4-1/+32
Portability test update. * ab/getcwd-test: t0001: fix broken not-quite getcwd(3) test in bed67874e2
2021-08-04Merge branch 'pb/merge-autostash-more'Libravatar Junio C Hamano1-0/+19
The local changes stashed by "git merge --autostash" were lost when the merge failed in certain ways, which has been corrected. * pb/merge-autostash-more: merge: apply autostash if merge strategy fails merge: apply autostash if fast-forward fails Documentation: define 'MERGE_AUTOSTASH' merge: add missing word "strategy" to a message
2021-08-04Merge branch 'en/ort-perf-batch-14'Libravatar Junio C Hamano1-1/+1
Further optimization on "merge -sort" backend. * en/ort-perf-batch-14: merge-ort: restart merge with cached renames to reduce process entry cost merge-ort: avoid recursing into directories when we don't need to merge-ort: defer recursing into directories when merge base is matched merge-ort: add a handle_deferred_entries() helper function merge-ort: add data structures for allowable trivial directory resolves merge-ort: add some more explanations in collect_merge_info_callback() merge-ort: resolve paths early when we have sufficient information
2021-08-04Merge branch 'ds/commit-and-checkout-with-sparse-index'Libravatar Junio C Hamano2-23/+221
"git checkout" and "git commit" learn to work without unnecessarily expanding sparse indexes. * ds/commit-and-checkout-with-sparse-index: unpack-trees: resolve sparse-directory/file conflicts t1092: document bad 'git checkout' behavior checkout: stop expanding sparse indexes sparse-index: recompute cache-tree commit: integrate with sparse-index p2000: compress repo names p2000: add 'git checkout -' test and decrease depth
2021-08-04Merge branch 'ar/submodule-add'Libravatar Junio C Hamano2-6/+17
Rewrite of "git submodule" in C continues. * ar/submodule-add: submodule: drop unused sm_name parameter from show_fetch_remotes() submodule--helper: introduce add-clone subcommand submodule--helper: refactor module_clone() submodule: prefix die messages with 'fatal' t7400: test failure to add submodule in tracked path
2021-08-02mingw: align symlinks-related rmdir() behavior with LinuxLibravatar Thomas Bétous2-0/+16
When performing a rebase, rmdir() is called on the folder .git/logs. On Unix rmdir() exits without deleting anything in case .git/logs is a symbolic link but the equivalent functions on Windows (_rmdir, _wrmdir and RemoveDirectoryW) do not behave the same and remove the folder if it is symlinked even if it is not empty. This creates issues when folders in .git/ are symlinks which is especially the case when git-repo[1] is used: It replaces `.git/logs/` with a symlink. One such issue is that the _target_ of that symlink is removed e.g. during a `git rebase`, where `delete_reflog("REBASE_HEAD")` will not only try to remove `.git/logs/REBASE_HEAD` but then recursively try to remove the parent directories until an error occurs, a technique that obviously relies on `rmdir()` refusing to remove a symlink. This was reported in https://github.com/git-for-windows/git/issues/2967. This commit updates mingw_rmdir() so that its behavior is the same as Linux rmdir() in case of symbolic links. To verify that Git does not regress on the reported issue, this patch adds a regression test for the `git rebase` symptom, even if the same `rmdir()` behavior is quite likely to cause potential problems in other Git commands as well. [1]: git-repo is a python tool built on top of Git which helps manage many Git repositories. It stores all the .git/ folders in a central place by taking advantage of symbolic links. More information: https://gerrit.googlesource.com/git-repo/ Signed-off-by: Thomas Bétous <tomspycell@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-02t7508: avoid non POSIX BRELibravatar Carlo Marcelo Arenas Belón1-1/+1
24c30e0b6 (wt-status: tolerate dangling marks, 2020-09-01) adds a test that uses a BRE which breaks at least with OpenBSD's grep. switch to an ERE as it is done for similar checks and while at it, remove the now obsolete test_i18ngrep call. Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-02Merge branch 'jt/bulk-prefetch'Libravatar Junio C Hamano1-0/+33
"git read-tree" had a codepath where blobs are fetched one-by-one from the promisor remote, which has been corrected to fetch in bulk. * jt/bulk-prefetch: cache-tree: prefetch in partial clone read-tree unpack-trees: refactor prefetching code
2021-08-02Merge branch 'ab/bundle-tests'Libravatar Junio C Hamano1-16/+56
"git bundle" gained more test coverage. * ab/bundle-tests: bundle tests: use test_cmp instead of grep bundle tests: use ">file" not ": >file"
2021-08-02Merge branch 'ps/perf-with-separate-output-directory'Libravatar Junio C Hamano3-13/+24
Test update. * ps/perf-with-separate-output-directory: perf: fix when running with TEST_OUTPUT_DIRECTORY
2021-07-30t0001: fix broken not-quite getcwd(3) test in bed67874e2Libravatar Ævar Arnfjörð Bjarmason4-1/+32
With a54e938e5b (strbuf: support long paths w/o read rights in strbuf_getcwd() on FreeBSD, 2017-03-26) we had t0001 break on systems like OpenBSD and AIX whose getcwd(3) has standard (but not like glibc et al) behavior. This was partially fixed in bed67874e2 (t0001: skip test with restrictive permissions if getpwd(3) respects them, 2017-08-07). The problem with that fix is that while its analysis of the problem is correct, it doesn't actually call getcwd(3), instead it invokes "pwd -P". There is no guarantee that "pwd -P" is going to call getcwd(3), as opposed to e.g. being a shell built-in. On AIX under both bash and ksh this test breaks because "pwd -P" will happily display the current working directory, but getcwd(3) called by the "git init" we're testing here will fail to get it. I checked whether clobbering the $PWD environment variable would affect it, and it didn't. Presumably these shells keep track of their working directory internally. There's possible follow-up work here in teaching strbuf_getcwd() to get the working directory with whatever method "pwd" uses on these platforms. See [1] for a discussion of that, but let's take the easy way out here and just skip these tests by fixing the GETCWD_IGNORES_PERMS prerequisite to match the limitations of strbuf_getcwd(). 1. https://lore.kernel.org/git/b650bef5-d739-d98d-e9f1-fa292b6ce982@web.de/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-29add: ignore outside the sparse-checkout in refresh()Libravatar Derrick Stolee1-5/+1
Since b243012 (refresh_index(): add flag to ignore SKIP_WORKTREE entries, 2021-04-08), 'git add --refresh <path>' will output a warning message when the path is outside the sparse-checkout definition. The implementation of this warning happened in parallel with the sparse-index work to add ensure_full_index() calls throughout the codebase. Update this loop to have the proper logic that checks to see if the pathspec is outside the sparse-checkout definition. This avoids the need to expand the sparse directory entry and determine if the path is tracked, untracked, or ignored. We simply avoid updating the stat() information because there isn't even an entry that matches the path! Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-29pathspec: stop calling ensure_full_indexLibravatar Derrick Stolee1-4/+3
The add_pathspec_matches_against_index() focuses on matching a pathspec to file entries in the index. This already works correctly for its only use: checking if untracked files exist in the index. The compatibility checks in t1092 already test that 'git add <dir>' works for a directory outside of the sparse cone. That provides coverage for removing this guard. This finalizes our ability to run 'git add .' without expanding a sparse index to a full one. This is evidenced by an update to t1092 and by these performance numbers for p2000-sparse-operations.sh: Test HEAD~1 HEAD -------------------------------------------------------------------------------- 2000.10: git add . (full-index-v3) 0.37(0.28+0.07) 0.36(0.27+0.06) -2.7% 2000.11: git add . (full-index-v4) 0.33(0.26+0.06) 0.32(0.28+0.05) -3.0% 2000.12: git add . (sparse-index-v3) 0.57(0.53+0.07) 0.06(0.06+0.07) -89.5% 2000.13: git add . (sparse-index-v4) 0.57(0.53+0.07) 0.05(0.03+0.09) -91.2% While the ~90% improvement is shown by the test results, it is worth noting that expanding the sparse index was adding overhead in previous commits. Comparing to the full index case, we see the performance go from 0.33s to 0.05s, an 85% improvement. Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-29add: allow operating on a sparse-only indexLibravatar Derrick Stolee1-7/+18
Disable command_requires_full_index for 'git add'. This does not require any additional removals of ensure_full_index(). The main reason is that 'git add' discovers changes based on the pathspec and the worktree itself. These are then inserted into the index directly, and calls to index_name_pos() or index_file_exists() already call expand_to_path() at the appropriate time to support a sparse-index. Add a test to check that 'git add -A' and 'git add <file>' does not expand the index at all, as long as <file> is not within a sparse directory. This does not help the global 'git add .' case. We can measure the improvement using p2000-sparse-operations.sh with these results: Test HEAD~1 HEAD ------------------------------------------------------------------------------ 2000.6: git add -A (full-index-v3) 0.35(0.30+0.05) 0.37(0.29+0.06) +5.7% 2000.7: git add -A (full-index-v4) 0.31(0.26+0.06) 0.33(0.27+0.06) +6.5% 2000.8: git add -A (sparse-index-v3) 0.57(0.53+0.07) 0.05(0.04+0.08) -91.2% 2000.9: git add -A (sparse-index-v4) 0.58(0.55+0.06) 0.05(0.05+0.06) -91.4% While the 91% improvement seems impressive, it's important to recognize that previously we had significant overhead for expanding the sparse-index. Comparing to the full index case, 'git add -A' goes from 0.37s to 0.05s, which is "only" an 86% improvement. This modification to 'git add' creates some behavior change depending on the use of a sparse index. We modify a test in t1092 to demonstrate these changes which will be remedied in future changes. Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-29t1092: test merge conflicts outside coneLibravatar Derrick Stolee1-0/+43
Conflicts can occur outside of the sparse-checkout definition, and in that case users might try to resolve the conflicts in several ways. Document a few of these ways in a test. Make it clear that this behavior is not necessarily the optimal flow, since users can become confused when Git deletes these files from the worktree in later commands. Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-28Merge branch 'ps/t0000-output-directory-fix'Libravatar Junio C Hamano2-2/+14
"TEST_OUTPUT_DIRECTORY=there make test" failed to work, which has been corrected. * ps/t0000-output-directory-fix: t0000: fix test if run with TEST_OUTPUT_DIRECTORY
2021-07-28Merge branch 'tb/reverse-midx'Libravatar Junio C Hamano1-0/+5
The code that gives an error message in "git multi-pack-index" when no subcommand is given tried to print a NULL pointer as a strong, which has been corrected. * tb/reverse-midx: multi-pack-index: fix potential segfault without sub-command
2021-07-28Merge branch 'pb/dont-complete-aliased-options'Libravatar Junio C Hamano1-0/+13
The completion support used to offer alternate spelling of options that exist only for compatibility, which has been corrected. * pb/dont-complete-aliased-options: parse-options: don't complete option aliases by default
2021-07-28Merge branch 'ds/status-with-sparse-index'Libravatar Junio C Hamano2-11/+206
"git status" codepath learned to work with sparsely populated index without hydrating it fully. * ds/status-with-sparse-index: t1092: document bad sparse-checkout behavior fsmonitor: integrate with sparse index wt-status: expand added sparse directory entries status: use sparse-index throughout status: skip sparse-checkout percentage with sparse-index diff-lib: handle index diffs with sparse dirs dir.c: accept a directory as part of cone-mode patterns unpack-trees: unpack sparse directory entries unpack-trees: rename unpack_nondirectories() unpack-trees: compare sparse directories correctly unpack-trees: preserve cache_bottom t1092: add tests for status/add and sparse files t1092: expand repository data shape t1092: replace incorrect 'echo' with 'cat' sparse-index: include EXTENDED flag when expanding sparse-index: skip indexes with unmerged entries
2021-07-28Merge branch 'ab/pkt-line-tests'Libravatar Junio C Hamano5-34/+24
Tests that cover protocol bits have been updated and helpers used there have been consolidated. * ab/pkt-line-tests: test-lib-functions: use test-tool for [de]packetize()
2021-07-28Merge branch 'jk/t0000-subtests-fix'Libravatar Junio C Hamano1-10/+29
Test fix. * jk/t0000-subtests-fix: t0000: clear GIT_SKIP_TESTS before running sub-tests
2021-07-28Merge branch 'ab/attribute-format'Libravatar Junio C Hamano1-1/+1
Many "printf"-like helper functions we have have been annotated with __attribute__() to catch placeholder/parameter mismatches. * ab/attribute-format: advice.h: add missing __attribute__((format)) & fix usage *.h: add a few missing __attribute__((format)) *.c static functions: add missing __attribute__((format)) sequencer.c: move static function to avoid forward decl *.c static functions: don't forward-declare __attribute__
2021-07-28Merge branch 'jk/log-decorate-optim'Libravatar Junio C Hamano1-0/+14
Optimize "git log" for cases where we wasted cycles to load ref decoration data that may not be needed. * jk/log-decorate-optim: load_ref_decorations(): fix decoration with tags add_ref_decoration(): rename s/type/deco_type/ load_ref_decorations(): avoid parsing non-tag objects object.h: add lookup_object_by_type() function object.h: expand docstring for lookup_unknown_object() log: avoid loading decorations for userformats that don't need it pretty.h: update and expand docstring for userformat_find_requirements()
2021-07-28Merge branch 'sm/worktree-add-lock'Libravatar Junio C Hamano1-1/+15
"git worktree add --lock" learned to record why the worktree is locked with a custom message. * sm/worktree-add-lock: worktree: teach `add` to accept --reason <string> with --lock worktree: mark lock strings with `_()` for translation t2400: clean up '"add" worktree with lock' test
2021-07-28Merge branch 'ew/many-alternate-optim'Libravatar Junio C Hamano4-0/+100
Optimization for repositories with many alternate object store. * ew/many-alternate-optim: oidtree: a crit-bit tree for odb_loose_cache oidcpy_with_padding: constify `src' arg make object_directory.loose_objects_subdir_seen a bitmap avoid strlen via strbuf_addstr in link_alt_odb_entry speed up alt_odb_usable() with many alternates
2021-07-28Merge branch 'hj/commit-allow-empty-message'Libravatar Junio C Hamano1-1/+1
"git commit --allow-empty-message" won't abort the operation upon an empty message, but the hint shown in the editor said otherwise. * hj/commit-allow-empty-message: commit: remove irrelavent prompt on `--allow-empty-message` commit: reorganise commit hint strings
2021-07-23merge: apply autostash if merge strategy failsLibravatar Philippe Blain1-0/+8
Since 'git merge' learned '--autostash' in a03b55530a (merge: teach --autostash option, 2020-04-07), 'cmd_merge', once it is determined that we have to create a merge commit, calls 'create_autostash' if '--autostash' is given. As explained in a03b55530a, and made more abvious by the tests added in that commit, the autostash is then applied if the merge succeeds, either directly or by committing (after conflict resolution or if '--no-commit' was given), or if the merge is aborted with 'git merge --abort'. In some other cases, like the user calling 'git reset --merge' or 'git merge --quit', the autostash is not applied, but saved in the stash list. However, there exists a scenario that creates an autostash but does not apply nor save it to the stash list: if the chosen merge strategy completely fails to handle the merge, i.e. 'try_merge_strategy' returns 2. Apply the autostash in that case also. An easy way to test that is to try to merge more than two commits but explicitely ask for the 'recursive' merge strategy. Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-23merge: apply autostash if fast-forward failsLibravatar Philippe Blain1-0/+11
Since 'git merge' learned '--autostash' in a03b55530a (merge: teach --autostash option, 2020-04-07), 'cmd_merge', in the fast-forward case, calls 'create_autostash' before calling 'checkout_fast_forward' if '--autostash' is given. However, if 'checkout_fast_forward' fails, the autostash is not applied to the working tree, nor saved in the stash list, since the code simply calls 'goto done'. Be more helpful to the user by applying the autostash in that case. An easy way to test a failing fast-forward is when we are merging a branch that has a tracked file that conflicts with an untracked file in the working tree. Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-23cache-tree: prefetch in partial clone read-treeLibravatar Jonathan Tan1-0/+33
"git read-tree" checks the existence of the blobs referenced by the given tree, but does not bulk prefetch them. Add a bulk prefetch. The lack of prefetch here was noticed at $DAYJOB during a merge involving some specific commits, but I couldn't find a minimal merge that didn't also trigger the prefetch in check_updates() in unpack-trees.c (and in all these cases, the lack of prefetch in cache-tree.c didn't matter because all the relevant blobs would have already been prefetched by then). This is why I used read-tree here to exercise this code path. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>