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2018-10-16Merge branch 'jk/oideq-hasheq-cleanup'Libravatar Junio C Hamano1-1/+2
Code clean-up. * jk/oideq-hasheq-cleanup: more oideq/hasheq conversions
2018-10-16Merge branch 'en/status-multiple-renames-to-the-same-target-fix'Libravatar Junio C Hamano1-0/+1
The code in "git status" sometimes hit an assertion failure. This was caused by a structure that was reused without cleaning the data used for the first run, which has been corrected. * en/status-multiple-renames-to-the-same-target-fix: commit: fix erroneous BUG, 'multiple renames on the same target? how?'
2018-10-16Merge branch 'jk/check-everything-connected-is-long-gone'Libravatar Junio C Hamano1-1/+1
Comment fix. * jk/check-everything-connected-is-long-gone: receive-pack: update comment with check_everything_connected
2018-10-16Merge branch 'jn/gc-auto'Libravatar Junio C Hamano1-6/+27
"gc --auto" ended up calling exit(-1) upon error, which has been corrected to use exit(1). Also the error reporting behaviour when daemonized has been updated to exit with zero status when stopping due to a previously discovered error (which implies there is no point running gc to improve the situation); we used to exit with failure in such a case. * jn/gc-auto: gc: do not return error for prior errors in daemonized mode
2018-10-16Merge branch 'jn/gc-auto-prep'Libravatar Junio C Hamano1-22/+18
Code clean-up. * jn/gc-auto-prep: gc: exit with status 128 on failure gc: improve handling of errors reading gc.log
2018-10-16Merge branch 'jk/delta-islands-with-bitmap-reuse-delta-fix'Libravatar Junio C Hamano1-16/+52
Fix interactions between two recent topics. * jk/delta-islands-with-bitmap-reuse-delta-fix: pack-objects: handle island check for "external" delta base
2018-10-16Merge branch 'ds/commit-graph-with-grafts'Libravatar Junio C Hamano2-4/+8
The recently introduced commit-graph auxiliary data is incompatible with mechanisms such as replace & grafts that "breaks" immutable nature of the object reference relationship. Disable optimizations based on its use (and updating existing commit-graph) when these incompatible features are in use in the repository. * ds/commit-graph-with-grafts: commit-graph: close_commit_graph before shallow walk commit-graph: not compatible with uninitialized repo commit-graph: not compatible with grafts commit-graph: not compatible with replace objects test-repository: properly init repo commit-graph: update design document refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback refs.c: migrate internal ref iteration to pass thru repository argument
2018-10-16Merge branch 'ab/commit-graph-progress'Libravatar Junio C Hamano3-4/+6
Generation of (experimental) commit-graph files have so far been fairly silent, even though it takes noticeable amount of time in a meaningfully large repository. The users will now see progress output. * ab/commit-graph-progress: gc: fix regression in 7b0f229222 impacting --quiet commit-graph verify: add progress output commit-graph write: add progress output
2018-10-10Merge branch 'ds/multi-pack-verify'Libravatar Junio C Hamano2-1/+21
"git multi-pack-index" learned to detect corruption in the .midx file it uses, and this feature has been integrated into "git fsck". * ds/multi-pack-verify: fsck: verify multi-pack-index multi-pack-index: report progress during 'verify' multi-pack-index: verify object offsets multi-pack-index: fix 32-bit vs 64-bit size check multi-pack-index: verify oid lookup order multi-pack-index: verify oid fanout order multi-pack-index: verify missing pack multi-pack-index: verify packname order multi-pack-index: verify corrupt chunk lookup table multi-pack-index: verify bad header multi-pack-index: add 'verify' verb
2018-10-04more oideq/hasheq conversionsLibravatar Jeff King1-1/+2
We added faster equality-comparison functions for hashes in 14438c4497 (introduce hasheq() and oideq(), 2018-08-28). A few topics were in-flight at the time, and can now be converted. This covers all spots found by "make coccicheck" in master (the coccicheck results were tweaked by hand for style). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27commit: fix erroneous BUG, 'multiple renames on the same target? how?'Libravatar Elijah Newren1-0/+1
builtin/commit.c:prepare_to_commit() can call run_status() twice if using the editor, including status, and the user attempts to record a non-merge empty commit without explicit --allow-empty. If there is also a rename involved as well (due to using 'git add -N'), then a BUG in wt-status.c is triggered: BUG: wt-status.c:476: multiple renames on the same target? how? The reason we hit this bug is that both run_status() calls use the same struct wt_status * (named s), and s->change is not freed between runs. Changes are inserted into s with string_list_insert, which usually means that the second run just recomputes all the same results and overwrites what was computed the first time. However, ever since commit 176ea7479309 ("wt-status.c: handle worktree renames", 2017-12-27), wt-status started checking for renames and copies but also added a preventative check that d->rename_status wasn't already set and output a BUG message if it was. The problem isn't that there are multiple rename targets to a single path as the error implies, the problem is that 's' is not freed/cleared between the two run_status() calls. Ever since commit dc6b1d92ca9c ("wt-status: use settings from git_diff_ui_config", 2018-05-04), which stopped hardcoding DIFF_DETECT_RENAME and allowed users to ask for copy detection, this bug has also been triggerable with a copy instead of a rename. Fix the bug by clearing s->change. A better change might be to clean up all of s between the two run_status() calls. A good first step towards such a goal might be writing a function to free the necessary fields in the wt_status * struct; a cursory glance at the code suggests all of its allocated data is probably leaked. However, doing all that cleanup is a bigger task for someone else interested to tackle; just fix the bug for now. Reported-by: Andrea Stacchiotti <andreastacchiotti@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.19.1Libravatar Junio C Hamano1-0/+1
* maint: Git 2.19.1 Git 2.18.1 Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.18.1Libravatar Junio C Hamano1-0/+1
* maint-2.18: Git 2.18.1 Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.17.2Libravatar Junio C Hamano1-0/+1
* maint-2.17: Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.16.5Libravatar Junio C Hamano1-0/+1
* maint-2.16: Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.15.3Libravatar Junio C Hamano1-0/+1
* maint-2.15: Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with Git 2.14.4Libravatar Junio C Hamano1-0/+1
* maint-2.14: Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27submodule--helper: use "--" to signal end of clone optionsLibravatar Jeff King1-0/+1
When we clone a submodule, we call "git clone $url $path". But there's nothing to say that those components can't begin with a dash themselves, confusing git-clone into thinking they're options. Let's pass "--" to make it clear what we expect. There's no test here, because it's actually quite hard to make these names work, even with "git clone" parsing them correctly. And we're going to restrict these cases even further in future commits. So we'll leave off testing until then; this is just the minimal fix to prevent us from doing something stupid with a badly formed entry. Reported-by: joernchen <joernchen@phenoelit.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-25receive-pack: update comment with check_everything_connectedLibravatar Jeff King1-1/+1
That function is now called "check_connected()", but we forgot to update this comment in 7043c7071c (check_everything_connected: use a struct with named options, 2016-07-15). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-24Merge branch 'en/update-ref-no-deref-stdin'Libravatar Junio C Hamano1-11/+14
"git update-ref" learned to make both "--no-deref" and "--stdin" work at the same time. * en/update-ref-no-deref-stdin: update-ref: allow --no-deref with --stdin update-ref: fix type of update_flags variable to match its usage
2018-09-24Merge branch 'ms/remote-error-message-update'Libravatar Junio C Hamano1-3/+3
Update error messages given by "git remote" and make them consistent. * ms/remote-error-message-update: builtin/remote: quote remote name on error to display empty name
2018-09-24Merge branch 'nd/attr-pathspec-fix'Libravatar Junio C Hamano1-1/+1
"git add ':(attr:foo)'" is not supported and is supposed to be rejected while the command line arguments are parsed, but we fail to reject such a command line upfront. * nd/attr-pathspec-fix: add: do not accept pathspec magic 'attr'
2018-09-24Merge branch 'en/double-semicolon-fix'Libravatar Junio C Hamano1-1/+1
Code clean-up. * en/double-semicolon-fix: Remove superfluous trailing semicolons
2018-09-24Merge branch 'tb/void-check-attr'Libravatar Junio C Hamano2-4/+2
Code clean-up. * tb/void-check-attr: Make git_check_attr() a void function
2018-09-21add: do not accept pathspec magic 'attr'Libravatar Nguyễn Thái Ngọc Duy1-1/+1
Commit b0db704652 (pathspec: allow querying for attributes - 2017-03-13) adds new pathspec magic 'attr' but only with match_pathspec(). "git add" has some pathspec related code that still does not know about 'attr' and will bail out: $ git add ':(attr:foo)' fatal: BUG:dir.c:1584: unsupported magic 40 A better solution would be making this code support 'attr'. But I don't know how much work is needed (I'm not familiar with this new magic). For now, let's simply reject this magic with a friendlier message: $ git add ':(attr:foo)' fatal: :(attr:foo): pathspec magic not supported by this command: 'attr' Update t6135 so that the expected error message is from the "graceful" rejection codepath, not "oops, we were supposed to reject the request to trigger this magic" codepath. Reported-by: smaudet@sebastianaudet.com Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-20gc: fix regression in 7b0f229222 impacting --quietLibravatar Ævar Arnfjörð Bjarmason1-1/+1
Fix a regression in my recent 7b0f229222 ("commit-graph write: add progress output", 2018-09-17). The newly added progress output for "commit-graph write" didn't check the --quiet option. Do so, and add a test asserting that this works as expected. Since the TTY prequisite isn't available everywhere let's add a version of this that both requires and doesn't require that. This test might be overly specific and will break if new progress output is added, but I think it'll serve as a good reminder to test the undertested progress mode(s). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Helped-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-19pack-objects: handle island check for "external" delta baseLibravatar Jeff King1-16/+52
Two recent topics, jk/pack-delta-reuse-with-bitmap and cc/delta-islands, can have a funny interaction. When checking if we can reuse an on-disk delta, the first topic allows base_entry to be NULL when we find an object that's not in the packing list. But the latter topic introduces a call to in_same_island(), which needs to look at base_entry->idx.oid. When these two features are used together, we might try to dereference a NULL base_entry. In practice, this doesn't really happen. We'd generally only use delta islands when packing to disk, since the whole point is to optimize the pack for serving fetches later. And the new delta-reuse code relies on having used reachability bitmaps to determine the set of objects, which we would typically only do when serving an actual fetch. However, it is technically possible to combine these features. And even without doing so, building with "SANITIZE=address,undefined" will cause t5310.46 to complain. Even though that test does not have delta islands enabled, we still take the address of the NULL entry to pass to in_same_island(). That function then promptly returns without dereferencing the value when it sees that islands are not enabled, but it's enough to trigger a sanitizer error. The solution is straight-forward: when both features are used together, we should pass the oid of the found base to in_same_island(). This is tricky to do inside a single "if" statement. And after the merge in f3504ea3dd (Merge branch 'cc/delta-islands', 2018-09-17), that "if" condition is already getting pretty unwieldy. So this patch moves the logic into a helper function, where we can easily use multiple return paths. The result is a bit longer, but the logic should be much easier to follow. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-17Merge branch 'ab/fetch-tags-noclobber'Libravatar Junio C Hamano1-7/+13
The rules used by "git push" and "git fetch" to determine if a ref can or cannot be updated were inconsistent; specifically, fetching to update existing tags were allowed even though tags are supposed to be unmoving anchoring points. "git fetch" was taught to forbid updates to existing tags without the "--force" option. * ab/fetch-tags-noclobber: fetch: stop clobbering existing tags without --force fetch: document local ref updates with/without --force push doc: correct lies about how push refspecs work push doc: move mention of "tag <tag>" later in the prose push doc: remove confusing mention of remote merger fetch tests: add a test for clobbering tag behavior push tests: use spaces in interpolated string push tests: make use of unused $1 in test description fetch: change "branch" to "reference" in --force -h output
2018-09-17Merge branch 'es/worktree-forced-ops-fix'Libravatar Junio C Hamano1-36/+77
Fix a bug in which the same path could be registered under multiple worktree entries if the path was missing (for instance, was removed manually). Also, as a convenience, expand the number of cases in which --force is applicable. * es/worktree-forced-ops-fix: doc-diff: force worktree add worktree: delete .git/worktrees if empty after 'remove' worktree: teach 'remove' to override lock when --force given twice worktree: teach 'move' to override lock when --force given twice worktree: teach 'add' to respect --force for registered but missing path worktree: disallow adding same path multiple times worktree: prepare for more checks of whether path can become worktree worktree: generalize delete_git_dir() to reduce code duplication worktree: move delete_git_dir() earlier in file for upcoming new callers worktree: don't die() in library function find_worktree()
2018-09-17Merge branch 'ds/commit-graph-tests'Libravatar Junio C Hamano1-0/+4
We can now optionally run tests with commit-graph enabled. * ds/commit-graph-tests: commit-graph: define GIT_TEST_COMMIT_GRAPH
2018-09-17Merge branch 'rs/mailinfo-format-flowed'Libravatar Junio C Hamano1-0/+4
"git mailinfo" used in "git am" learned to make a best-effort recovery of a patch corrupted by MUA that sends text/plain with format=flawed option. * rs/mailinfo-format-flowed: mailinfo: support format=flowed
2018-09-17Merge branch 'jk/cocci'Libravatar Junio C Hamano22-47/+47
spatch transformation to replace boolean uses of !hashcmp() to newly introduced oideq() is added, and applied, to regain performance lost due to support of multiple hash algorithms. * jk/cocci: show_dirstat: simplify same-content check read-cache: use oideq() in ce_compare functions convert hashmap comparison functions to oideq() convert "hashcmp() != 0" to "!hasheq()" convert "oidcmp() != 0" to "!oideq()" convert "hashcmp() == 0" to hasheq() convert "oidcmp() == 0" to oideq() introduce hasheq() and oideq() coccinelle: use <...> for function exclusion
2018-09-17Merge branch 'es/format-patch-rangediff'Libravatar Junio C Hamano2-21/+65
"git format-patch" learned a new "--range-diff" option to explain the difference between this version and the previous attempt in the cover letter (or after the tree-dashes as a comment). * es/format-patch-rangediff: format-patch: allow --range-diff to apply to a lone-patch format-patch: add --creation-factor tweak for --range-diff format-patch: teach --range-diff to respect -v/--reroll-count format-patch: extend --range-diff to accept revision range format-patch: add --range-diff option to embed diff in cover letter range-diff: relieve callers of low-level configuration burden range-diff: publish default creation factor range-diff: respect diff_option.file rather than assuming 'stdout'
2018-09-17Merge branch 'cc/delta-islands'Libravatar Junio C Hamano2-43/+103
Lift code from GitHub to restrict delta computation so that an object that exists in one fork is not made into a delta against another object that does not appear in the same forked repository. * cc/delta-islands: pack-objects: move 'layer' into 'struct packing_data' pack-objects: move tree_depth into 'struct packing_data' t5320: tests for delta islands repack: add delta-islands support pack-objects: add delta-islands support pack-objects: refactor code into compute_layer_order() Add delta-islands.{c,h}
2018-09-17Merge branch 'es/format-patch-interdiff'Libravatar Junio C Hamano1-21/+61
"git format-patch" learned a new "--interdiff" option to explain the difference between this version and the previous atttempt in the cover letter (or after the tree-dashes as a comment). * es/format-patch-interdiff: format-patch: allow --interdiff to apply to a lone-patch log-tree: show_log: make commentary block delimiting reusable interdiff: teach show_interdiff() to indent interdiff format-patch: teach --interdiff to respect -v/--reroll-count format-patch: add --interdiff option to embed diff in cover letter format-patch: allow additional generated content in make_cover_letter()
2018-09-17Merge branch 'jk/trailer-fixes'Libravatar Junio C Hamano1-0/+1
"git interpret-trailers" and its underlying machinery had a buggy code that attempted to ignore patch text after commit log message, which triggered in various codepaths that will always get the log message alone and never get such an input. * jk/trailer-fixes: append_signoff: use size_t for string offsets sequencer: ignore "---" divider when parsing trailers pretty, ref-filter: format %(trailers) with no_divider option interpret-trailers: allow suppressing "---" divider interpret-trailers: tighten check for "---" patch boundary trailer: pass process_trailer_opts to trailer_info_get() trailer: use size_t for iterating trailer list trailer: use size_t for string offsets
2018-09-17Merge branch 'jk/pack-delta-reuse-with-bitmap'Libravatar Junio C Hamano1-9/+19
When creating a thin pack, which allows objects to be made into a delta against another object that is not in the resulting pack but is known to be present on the receiving end, the code learned to take advantage of the reachability bitmap; this allows the server to send a delta against a base beyond the "boundary" commit. * jk/pack-delta-reuse-with-bitmap: pack-objects: reuse on-disk deltas for thin "have" objects pack-bitmap: save "have" bitmap from walk t/perf: add perf tests for fetches from a bitmapped server t/perf: add infrastructure for measuring sizes t/perf: factor out percent calculations t/perf: factor boilerplate out of test_perf
2018-09-17Merge branch 'ds/reachable'Libravatar Junio C Hamano11-0/+11
The code for computing history reachability has been shuffled, obtained a bunch of new tests to cover them, and then being improved. * ds/reachable: commit-reach: correct accidental #include of C file commit-reach: use can_all_from_reach commit-reach: make can_all_from_reach... linear commit-reach: replace ref_newer logic test-reach: test commit_contains test-reach: test can_all_from_reach_with_flags test-reach: test reduce_heads test-reach: test get_merge_bases_many test-reach: test is_descendant_of test-reach: test in_merge_bases test-reach: create new test tool for ref_newer commit-reach: move can_all_from_reach_with_flags upload-pack: generalize commit date cutoff upload-pack: refactor ok_to_give_up() upload-pack: make reachable() more generic commit-reach: move commit_contains from ref-filter commit-reach: move ref_newer from remote.c commit.h: remove method declarations commit-reach: move walk methods from commit.c
2018-09-17Merge branch 'sb/submodule-update-in-c'Libravatar Junio C Hamano1-34/+158
"git submodule update" is getting rewritten piece-by-piece into C. * sb/submodule-update-in-c: submodule--helper: introduce new update-module-mode helper submodule--helper: replace connect-gitdir-workingtree by ensure-core-worktree builtin/submodule--helper: factor out method to update a single submodule builtin/submodule--helper: store update_clone information in a struct builtin/submodule--helper: factor out submodule updating git-submodule.sh: rename unused variables git-submodule.sh: align error reporting for update mode to use path
2018-09-17Merge branch 'tg/rerere'Libravatar Junio C Hamano1-2/+2
Fixes to "git rerere" corner cases, especially when conflict markers cannot be parsed in the file. * tg/rerere: rerere: recalculate conflict ID when unresolved conflict is committed rerere: teach rerere to handle nested conflicts rerere: return strbuf from handle path rerere: factor out handle_conflict function rerere: only return whether a path has conflicts or not rerere: fix crash with files rerere can't handle rerere: add documentation for conflict normalization rerere: mark strings for translation rerere: wrap paths in output in sq rerere: lowercase error messages rerere: unify error messages when read_cache fails
2018-09-17Merge branch 'ds/multi-pack-index'Libravatar Junio C Hamano7-14/+98
When there are too many packfiles in a repository (which is not recommended), looking up an object in these would require consulting many pack .idx files; a new mechanism to have a single file that consolidates all of these .idx files is introduced. * ds/multi-pack-index: (32 commits) pack-objects: consider packs in multi-pack-index midx: test a few commands that use get_all_packs treewide: use get_all_packs packfile: add all_packs list midx: fix bug that skips midx with alternates midx: stop reporting garbage midx: mark bad packed objects multi-pack-index: store local property multi-pack-index: provide more helpful usage info midx: clear midx on repack packfile: skip loading index if in multi-pack-index midx: prevent duplicate packfile loads midx: use midx in approximate_object_count midx: use existing midx when writing new one midx: use midx in abbreviation calculations midx: read objects from multi-pack-index config: create core.multiPackIndex setting midx: write object offsets midx: write object id fanout chunk midx: write object ids in a chunk ...
2018-09-17Merge branch 'jk/branch-l-1-repurpose'Libravatar Junio C Hamano1-21/+1
Updated plan to repurpose the "-l" option to "git branch". * jk/branch-l-1-repurpose: doc/git-branch: remove obsolete "-l" references branch: make "-l" a synonym for "--list"
2018-09-17Merge branch 'jk/rev-list-stdin-noop-is-ok'Libravatar Junio C Hamano1-1/+1
"git rev-list --stdin </dev/null" used to be an error; it now shows no output without an error. "git rev-list --stdin --default HEAD" still falls back to the given default when nothing is given on the standard input. * jk/rev-list-stdin-noop-is-ok: rev-list: make empty --stdin not an error
2018-09-17Merge branch 'bp/checkout-new-branch-optim'Libravatar Junio C Hamano1-4/+116
"git checkout -b newbranch [HEAD]" should not have to do as much as checking out a commit different from HEAD. An attempt is made to optimize this special case. * bp/checkout-new-branch-optim: checkout: optimize "git checkout -b <new_branch>"
2018-09-17Merge branch 'nd/clone-case-smashing-warning'Libravatar Junio C Hamano1-0/+1
Running "git clone" against a project that contain two files with pathnames that differ only in cases on a case insensitive filesystem would result in one of the files lost because the underlying filesystem is incapable of holding both at the same time. An attempt is made to detect such a case and warn. * nd/clone-case-smashing-warning: clone: report duplicate entries on case-insensitive filesystems
2018-09-17fsck: verify multi-pack-indexLibravatar Derrick Stolee1-0/+18
When core.multiPackIndex is true, we may have a multi-pack-index in our object directory. Add calls to 'git multi-pack-index verify' at the end of 'git fsck' if so. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-17multi-pack-index: add 'verify' verbLibravatar Derrick Stolee1-1/+3
The multi-pack-index builtin writes multi-pack-index files, and uses a 'write' verb to do so. Add a 'verify' verb that checks this file matches the contents of the pack-indexes it replaces. The current implementation is a no-op, but will be extended in small increments in later commits. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-17commit-graph write: add progress outputLibravatar Ævar Arnfjörð Bjarmason2-3/+5
Before this change the "commit-graph write" command didn't report any progress. On my machine this command takes more than 10 seconds to write the graph for linux.git, and around 1m30s on the 2015-04-03-1M-git.git[1] test repository (a test case for a large monorepository). Furthermore, since the gc.writeCommitGraph setting was added in d5d5d7b641 ("gc: automatically write commit-graph files", 2018-06-27), there was no indication at all from a "git gc" run that anything was different. This why one of the progress bars being added here uses start_progress() instead of start_delayed_progress(), so that it's guaranteed to be seen. E.g. on my tiny 867 commit dotfiles.git repository: $ git -c gc.writeCommitGraph=true gc Enumerating objects: 2821, done. [...] Computing commit graph generation numbers: 100% (867/867), done. On larger repositories, such as linux.git the delayed progress bar(s) will kick in, and we'll show what's going on instead of, as was previously happening, printing nothing while we write the graph: $ git -c gc.writeCommitGraph=true gc [...] Annotating commits in commit graph: 1565573, done. Computing commit graph generation numbers: 100% (782484/782484), done. Note that here we don't show "Finding commits for commit graph", this is because under "git gc" we seed the search with the commit references in the repository, and that set is too small to show any progress, but would e.g. on a smaller repo such as git.git with --stdin-commits: $ git rev-list --all | git -c gc.writeCommitGraph=true write --stdin-commits Finding commits for commit graph: 100% (162576/162576), done. Computing commit graph generation numbers: 100% (162576/162576), done. With --stdin-packs we don't show any estimation of how much is left to do. This is because we might be processing more than one pack. We could be less lazy here and show progress, either by detecting that we're only processing one pack, or by first looping over the packs to discover how many commits they have. I don't see the point in doing that work. So instead we get (on 2015-04-03-1M-git.git): $ echo pack-<HASH>.idx | git -c gc.writeCommitGraph=true --exec-path=$PWD commit-graph write --stdin-packs Finding commits for commit graph: 13064614, done. Annotating commits in commit graph: 3001341, done. Computing commit graph generation numbers: 100% (1000447/1000447), done. No GC mode uses --stdin-packs. It's what they use at Microsoft to manually compute the generation numbers for their collection of large packs which are never coalesced. The reason we need a "report_progress" variable passed down from "git gc" is so that we don't report this output when we're running in the process "git gc --auto" detaches from the terminal. Since we write the commit graph from the "git gc" process itself (as opposed to what we do with say the "git repack" phase), we'd end up writing the output to .git/gc.log and reporting it to the user next time as part of the "The last gc run reported the following[...]" error, see 329e6e8794 ("gc: save log from daemonized gc --auto and print it next time", 2015-09-19). So we must keep track of whether or not we're running in that demonized mode, and if so print no progress. See [2] and subsequent replies for a discussion of an approach not taken in compute_generation_numbers(). I.e. we're saying "Computing commit graph generation numbers", even though on an established history we're mostly skipping over all the work we did in the past. This is similar to the white lie we tell in the "Writing objects" phase (not all are objects being written). Always showing progress is considered more important than accuracy. I.e. on a repository like 2015-04-03-1M-git.git we'd hang for 6 seconds with no output on the second "git gc" if no changes were made to any objects in the interim if we'd take the approach in [2]. 1. https://github.com/avar/2015-04-03-1M-git 2. <c6960252-c095-fb2b-e0bc-b1e6bb261614@gmail.com> (https://public-inbox.org/git/c6960252-c095-fb2b-e0bc-b1e6bb261614@gmail.com/) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-14builtin/remote: quote remote name on error to display empty nameLibravatar Shulhan1-3/+3
When adding new remote name with empty string, git will print the following error message, fatal: '' is not a valid remote name\n But when removing remote name with empty string as input, git shows the empty string without quote, fatal: No such remote: \n To make these error messages consistent, quote the name of the remote that we tried and failed to find. Signed-off-by: Shulhan <m.shulhan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-12update-ref: allow --no-deref with --stdinLibravatar Elijah Newren1-10/+13
If passed both --no-deref and --stdin, update-ref would error out with a general usage message that did not at all suggest these options were incompatible. The manpage for update-ref did suggest through its synopsis line that --no-deref and --stdin were incompatible, but it sadly also incorrectly suggested that -d and --no-deref were incompatible. So the help around the --no-deref option is buggy in a few ways. The --stdin option did provide a different mechanism for avoiding dereferencing symbolic-refs: adding a line reading option no-deref before every other directive in the input. (Technically, if the user wants to do the extra work of first determining which refs they want to update or delete are symbolic, then they only need to put the extra "option no-deref" lines before the updates of those refs. But in some cases, that's more work than just adding the "option no-deref" before every other directive.) It's easier to allow the user to just pass --no-deref along with --stdin in order to tell update-ref that the user doesn't want any symbolic ref to be dereferenced. It also makes the update-ref documentation simpler. Implement that, and update the documentation to match. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>