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2021-09-07sparse-index: use WRITE_TREE_MISSING_OKLibravatar Derrick Stolee1-1/+4
When updating the cache tree in convert_to_sparse(), the WRITE_TREE_MISSING_OK flag indicates that trees might be computed that do not already exist within the object database. This happens in cases such as 'git add' creating new trees that it wants to store in anticipation of a following 'git commit'. If this flag is not specified, then it might trigger a promisor fetch or a failure due to the object not existing locally. Use WRITE_TREE_MISSING_OK during convert_to_sparse() to avoid these possible reasons for the cache_tree_update() to fail. 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-index: silently return when cache tree failsLibravatar Derrick Stolee1-4/+6
If cache_tree_update() returns a non-zero value, then it could not create the cache tree. This is likely due to a path having a merge conflict. Since we are already returning early, let's return silently to avoid making it seem like we failed to write the index at all. If we remove our dependence on the cache tree within convert_to_sparse(), then we could still recover from this scenario and have a sparse index. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07unpack-trees: fix nested sparse-dir searchLibravatar Derrick Stolee1-3/+5
The iterated search in find_cache_entry() was recently modified to include a loop that searches backwards for a sparse directory entry that matches the given traverse_info and name_entry. However, the string comparison failed to actually concatenate those two strings, so this failed to find a sparse directory when it was not a top-level directory. This caused some errors in rare cases where a 'git checkout' spanned a diff that modified files within the sparse directory entry, but we could not correctly find the entry. Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Helped-by: René Scharfe <l.s.r@web.de> 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-index: silently return when not using cone-mode patternsLibravatar Derrick Stolee1-5/+11
While the sparse-index is only enabled when core.sparseCheckoutCone is also enabled, it is possible for the user to modify the sparse-checkout file manually in a way that does not match cone-mode patterns. In this case, we should refuse to convert an index into a sparse index, since the sparse_checkout_patterns will not be initialized with recursive and parent path hashsets. Also silently return if there are no cache entries, which is a simple case: there are no paths to make sparse! 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 Hamano3-14/+70
* 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
2021-08-06Git 2.33-rc1Libravatar Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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 'ab/pickaxe-pcre2'Libravatar Junio C Hamano1-1/+1
* ab/pickaxe-pcre2: diff: --pickaxe-all typofix
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>
2021-08-04The eighth batchLibravatar Junio C Hamano1-1/+16
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-04Merge branch 'tb/mingw-rmdir-symlink-to-directory'Libravatar Junio C Hamano3-0/+37
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 'ar/doc-markup-fix'Libravatar Junio C Hamano2-2/+2
Doc mark-up fix. * ar/doc-markup-fix: Documentation: render special characters correctly
2021-08-04Merge branch 'ab/getcwd-test'Libravatar Junio C Hamano5-1/+33
Portability test update. * ab/getcwd-test: t0001: fix broken not-quite getcwd(3) test in bed67874e2
2021-08-04Merge branch 'rs/use-fspathhash'Libravatar Junio C Hamano3-26/+8
Code simplification. * rs/use-fspathhash: use fspathhash() everywhere
2021-08-04Merge branch 'pb/merge-autostash-more'Libravatar Junio C Hamano3-2/+24
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 Hamano2-12/+389
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 Hamano7-30/+240
"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 'ab/update-submitting-patches'Libravatar Junio C Hamano1-111/+96
Reorganize and update the SubmitingPatches document. * ab/update-submitting-patches: SubmittingPatches: replace discussion of Travis with GitHub Actions SubmittingPatches: move discussion of Signed-off-by above "send"
2021-08-04Merge branch 'ah/plugleaks'Libravatar Junio C Hamano12-27/+42
Leak plugging. * ah/plugleaks: reset: clear_unpack_trees_porcelain to plug leak builtin/rebase: fix options.strategy memory lifecycle builtin/merge: free found_ref when done builtin/mv: free or UNLEAK multiple pointers at end of cmd_mv convert: release strbuf to avoid leak read-cache: call diff_setup_done to avoid leak ref-filter: also free head for ATOM_HEAD to avoid leak diffcore-rename: move old_dir/new_dir definition to plug leak builtin/for-each-repo: remove unnecessary argv copy to plug leak builtin/submodule--helper: release unused strbuf to avoid leak environment: move strbuf into block to plug leak fmt-merge-msg: free newly allocated temporary strings when done
2021-08-04Merge branch 'ar/submodule-add'Libravatar Junio C Hamano4-175/+341
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
2021-08-04diff: --pickaxe-all typofixLibravatar Bagas Sanjaya1-1/+1
When I was fixing fuzzies as I updating po/id.po for 2.33.0 l10n round, I noticed a triple-dash typo (--pickaxe-all) at diff.c, which according to git-diff(1) manpage, the correct option name should be --pickaxe-all. Fix the typo. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-02mingw: align symlinks-related rmdir() behavior with LinuxLibravatar Thomas Bétous3-0/+37
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>
2021-08-02Git 2.33-rc0Libravatar Junio C Hamano2-1/+18
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-02Merge branch 'jk/check-pack-valid-before-opening-bitmap'Libravatar Junio C Hamano1-0/+5
A race between repacking and using pack bitmaps has been corrected. * jk/check-pack-valid-before-opening-bitmap: pack-bitmap: check pack validity when opening bitmap
2021-08-02Merge branch 'jt/bulk-prefetch'Libravatar Junio C Hamano5-21/+82
"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 'fc/pull-no-rebase-merges-theirs-into-ours'Libravatar Junio C Hamano1-1/+1
Documentation fix for "git pull --rebase=no". * fc/pull-no-rebase-merges-theirs-into-ours: doc: pull: fix rebase=false documentation
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
2021-08-02Merge branch 'js/ci-check-whitespace-updates'Libravatar Junio C Hamano1-24/+2
CI update. * js/ci-check-whitespace-updates: ci(check-whitespace): restrict to the intended commits ci(check-whitespace): stop requiring a read/write token
2021-08-02Merge branch 'jk/config-env-doc'Libravatar Junio C Hamano1-11/+17
Documentation around GIT_CONFIG has been updated. * jk/config-env-doc: doc/git-config: simplify "override" advice for FILES section doc/git-config: clarify GIT_CONFIG environment variable doc/git-config: explain --file instead of referring to GIT_CONFIG
2021-08-02Merge branch 'pb/submodule-recurse-doc'Libravatar Junio C Hamano1-2/+3
Doc update. * pb/submodule-recurse-doc: doc: clarify description of 'submodule.recurse'
2021-08-02Merge branch 'tb/bitmap-type-filter-comment-fix'Libravatar Junio C Hamano1-5/+6
In-code comment update. * tb/bitmap-type-filter-comment-fix: pack-bitmap: clarify comment in filter_bitmap_exclude_type()
2021-07-30use fspathhash() everywhereLibravatar René Scharfe3-26/+8
cf2dc1c238 (speed up alt_odb_usable() with many alternates, 2021-07-07) introduced the function fspathhash() for calculating path hashes while respecting the configuration option core.ignorecase. Call it instead of open-coding it; the resulting code is shorter and less repetitive. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-30t0001: fix broken not-quite getcwd(3) test in bed67874e2Libravatar Ævar Arnfjörð Bjarmason5-1/+33
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>
2021-07-30Documentation: render special characters correctlyLibravatar Andrei Rybak2-2/+2
Three hyphens are rendered verbatim, so "--" has to be used to produce a dash. There is no double arrow ("<->" is rendered as "<→"), so a left and right arrow "<-->" have to be combined for that. So fix asciidoc output for special characters. This is similar to fixes in commit de82095a95 (doc hash-function-transition: fix asciidoc output, 2021-02-05). Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-29add: remove ensure_full_index() with --renormalizeLibravatar Derrick Stolee1-2/+0
The --renormalize option updates the EOL conversions for the tracked files. However, the loop already ignores files marked with the SKIP_WORKTREE bit, so it will continue to do so with a sparse index because the sparse directory entries also have this bit set. 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: ignore outside the sparse-checkout in refresh()Libravatar Derrick Stolee2-6/+10
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 Stolee2-6/+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 Stolee2-7/+21
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>
2021-07-28The seventh batchLibravatar Junio C Hamano1-0/+43
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 Hamano2-1/+6
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 'hn/refs-debug-empty-prefix'Libravatar Junio C Hamano1-1/+2
Debugging aid. * hn/refs-debug-empty-prefix: refs/debug: quote prefix
2021-07-28Merge branch 'pb/dont-complete-aliased-options'Libravatar Junio C Hamano2-1/+14
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 'en/rename-limits-doc'Libravatar Junio C Hamano7-17/+26
Documentation on "git diff -l<n>" and diff.renameLimit have been updated, and the defaults for these limits have been raised. * en/rename-limits-doc: rename: bump limit defaults yet again diffcore-rename: treat a rename_limit of 0 as unlimited doc: clarify documentation for rename/copy limits diff: correct warning message when renameLimit exceeded
2021-07-28Merge branch 'ds/gender-neutral-doc-guidelines'Libravatar Junio C Hamano1-0/+45
A guideline for gender neutral documentation has been added. * ds/gender-neutral-doc-guidelines: CodingGuidelines: recommend gender-neutral description