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2020-03-05Git 2.26-rc0v2.26.0-rc0Junio C Hamano2-1/+41
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-05t5537: adjust test_oid labelJohannes Schindelin1-3/+3
We recently switched to using Perl instead of `sed` in the httpd-based tests. Let's reflect that in the label we give the corresponding commit hashes. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-05Merge branch 'hi/gpg-use-check-signature'Junio C Hamano4-72/+75
"git merge signed-tag" while lacking the public key started to say "No signature", which was utterly wrong. This regression has been reverted. * hi/gpg-use-check-signature: Revert "gpg-interface: prefer check_signature() for GPG verification"
2020-03-05Merge branch 'rs/commit-graph-code-simplification'Junio C Hamano1-6/+2
Code simplfication. * rs/commit-graph-code-simplification: commit-graph: use progress title directly
2020-03-05Merge branch 'js/ci-windows-update'Junio C Hamano10-73/+93
Updates to the CI settings. * js/ci-windows-update: Azure Pipeline: switch to the latest agent pools ci: prevent `perforce` from being quarantined t/lib-httpd: avoid using macOS' sed
2020-03-05Merge branch 'be/describe-multiroot'Junio C Hamano2-4/+69
"git describe" in a repository with multiple root commits sometimes gave up looking for the best tag to describe a given commit with too early, which has been adjusted. * be/describe-multiroot: describe: don't abort too early when searching tags
2020-03-05Merge branch 'ag/rebase-remove-redundant-code'Junio C Hamano1-9/+1
Code reduction. * ag/rebase-remove-redundant-code: builtin/rebase: remove a call to get_oid() on `options.switch_to'
2020-03-05Merge branch 'es/recursive-single-branch-clone'Junio C Hamano5-9/+56
"git clone --recurse-submodules --single-branch" now uses the same single-branch option when cloning the submodules. * es/recursive-single-branch-clone: clone: pass --single-branch during --recurse-submodules submodule--helper: use C99 named initializer
2020-03-05Merge branch 'jk/nth-packed-object-id'Junio C Hamano13-114/+95
Code cleanup to use "struct object_id" more by replacing use of "char *sha1" * jk/nth-packed-object-id: packfile: drop nth_packed_object_sha1() packed_object_info(): use object_id internally for delta base packed_object_info(): use object_id for returning delta base pack-check: push oid lookup into loop pack-check: convert "internal error" die to a BUG() pack-bitmap: use object_id when loading on-disk bitmaps pack-objects: use object_id struct in pack-reuse code pack-objects: convert oe_set_delta_ext() to use object_id pack-objects: read delta base oid into object_id struct nth_packed_object_oid(): use customary integer return
2020-03-05Merge branch 'es/do-not-let-rebase-switch-to-protected-branch'Junio C Hamano2-3/+22
"git rebase BASE BRANCH" rebased/updated the tip of BRANCH and checked it out, even when the BRANCH is checked out in a different worktree. This has been corrected. * es/do-not-let-rebase-switch-to-protected-branch: rebase: refuse to switch to branch already checked out elsewhere t3400: make test clean up after itself
2020-03-05Merge branch 'hv/receive-denycurrent-everywhere'Junio C Hamano5-18/+49
"git push" should stop from updating a branch that is checked out when receive.denyCurrentBranch configuration is set, but it failed to pay attention to checkouts in secondary worktrees. This has been corrected. * hv/receive-denycurrent-everywhere: t2402: test worktree path when called in .git directory receive.denyCurrentBranch: respect all worktrees t5509: use a bare repository for test push target get_main_worktree(): allow it to be called in the Git directory
2020-03-05Merge branch 'es/worktree-avoid-duplication-fix'Junio C Hamano4-16/+38
In rare cases "git worktree add <path>" could think that <path> was already a registered worktree even when it wasn't and refuse to add the new worktree. This has been corrected. * es/worktree-avoid-duplication-fix: worktree: don't allow "add" validation to be fooled by suffix matching worktree: add utility to find worktree by pathname worktree: improve find_worktree() documentation
2020-03-05Merge branch 'bc/wildcard-credential'Junio C Hamano10-23/+228
A configuration element used for credential subsystem can now use wildcard pattern to specify for which set of URLs the entry applies. * bc/wildcard-credential: credential: allow wildcard patterns when matching config credential: use the last matching username in the config t0300: add tests for some additional cases t1300: add test for urlmatch with multiple wildcards mailmap: add an additional email address for brian m. carlson
2020-03-05Merge branch 'mr/bisect-in-c-1'Junio C Hamano3-98/+189
Underlying machinery of "git bisect--helper" is being refactored into pieces that are more easily reused. * mr/bisect-in-c-1: bisect: libify `bisect_next_all` bisect: libify `handle_bad_merge_base` and its dependents bisect: libify `check_good_are_ancestors_of_bad` and its dependents bisect: libify `check_merge_bases` and its dependents bisect: libify `bisect_checkout` bisect: libify `exit_if_skipped_commits` to `error_if_skipped*` and its dependents bisect--helper: return error codes from `cmd_bisect__helper()` bisect: add enum to represent bisect returning codes bisect--helper: introduce new `decide_next()` function bisect: use the standard 'if (!var)' way to check for 0 bisect--helper: change `retval` to `res` bisect--helper: convert `vocab_*` char pointers to char arrays
2020-03-05Merge branch 'ds/sparse-add'Junio C Hamano4-34/+201
"git sparse-checkout" learned a new "add" subcommand. * ds/sparse-add: sparse-checkout: allow one-character directories in cone mode sparse-checkout: work with Windows paths sparse-checkout: create 'add' subcommand sparse-checkout: extract pattern update from 'set' subcommand sparse-checkout: extract add_patterns_from_input()
2020-03-05tag: use new advice API to check visibilityHeba Waly4-5/+4
change the advise call in tag library from advise() to advise_if_enabled() to construct an example of the usage of the new API. Signed-off-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-05advice: revamp advise APIHeba Waly7-4/+188
Currently it's very easy for the advice library's callers to miss checking the visibility step before printing an advice. Also, it makes more sense for this step to be handled by the advice library. Add a new advise_if_enabled function that checks the visibility of advice messages before printing. Add a new helper advise_enabled to check the visibility of the advice if the caller needs to carry out complicated processing based on that value. A list of advice_settings is added to cache the config variables names and values, it's intended to replace advice_config[] and the global variables once we migrate all the callers to use the new APIs. Signed-off-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-04t2402: test worktree path when called in .git directoryHariom Verma1-0/+6
The bug which reports an extra `/.git/.` in worktree path when called in '.git' directory already has been fixed. But unfortunately, the regression test to ensure this behavior has been forgotten. Here is that test. Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Hariom Verma <hariom18599@gmail.com> Acked-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-03remote: drop "explicit" parameter from remote_ref_for_branch()Jeff King3-15/+5
Commit 9700fae5ee (for-each-ref: let upstream/push report the remote ref name, 2017-11-07) added a remote_ref_for_branch() helper, which is modeled after remote_for_branch(). This includes providing an "explicit" out-parameter that tells the caller whether the remote was configured by the user, or whether we picked a default name like "origin". But unlike remote names, there is no default name when the user didn't configure one. The only way the "explicit" parameter is used by the caller is to use the value returned from the helper when it is set, and use an empty string otherwise, ignoring the returned value from the helper. Let's drop the "explicit" out-parameter, and return NULL when the returned value from the helper should be ignored, to simplify the function interface. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Damien Robert <damien.olivier.robert+git@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-03stash: get git_stash_config at the top levelThomas Gummerer1-3/+2
In the next commit we're adding another config variable to be read from 'git_stash_config', that is valid for the top level command instead of just a subset. Move the 'git_config' invocation for 'git_stash_config' to the top-level to prepare for that. Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-03remote-curl: show progress for fetches over dumb HTTPRené Scharfe3-1/+14
Fetching over dumb HTTP transport doesn't show any progress, even with the option --progress. If the connection is slow or there is a lot of data to get then this can take a long time while the user is left to wonder if git got stuck. We don't know the number of objects to fetch at the outset, but we can count the ones we got. Show an open-ended progress indicator based on that number if the user asked for it. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-02The eighth batch for 2.26Junio C Hamano1-0/+37
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-02Merge branch 'ma/test-cleanup'Junio C Hamano13-17/+5
Code cleanup. * ma/test-cleanup: t: drop debug `cat` calls t9810: drop debug `cat` call t4117: check for files using `test_path_is_file`
2020-03-02Merge branch 'rs/blame-typefix-for-fingerprint'Junio C Hamano1-1/+3
Code cleanup. * rs/blame-typefix-for-fingerprint: blame: provide type of fingerprints pointer
2020-03-02Merge branch 'rs/micro-cleanups'Junio C Hamano5-6/+5
Code cleanup. * rs/micro-cleanups: use strpbrk(3) to search for characters from a given set quote: use isalnum() to check for alphanumeric characters
2020-03-02Merge branch 'es/worktree-cleanup'Junio C Hamano1-4/+0
Code cleanup. * es/worktree-cleanup: worktree: drop unused code from get_main_worktree()
2020-03-02Merge branch 'ak/test-log-graph'Junio C Hamano5-107/+74
Test update. * ak/test-log-graph: lib-log-graph: consolidate colored graph cmp logic lib-log-graph: consolidate test_cmp_graph logic
2020-03-02Merge branch 'jk/run-command-formatfix'Junio C Hamano1-1/+1
Code style cleanup. * jk/run-command-formatfix: run-command.h: fix mis-indented struct member
2020-03-02Merge branch 'ds/partial-clone-fixes'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'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'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'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'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'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'Junio C Hamano1-1/+1
Update to doc-diff. * jk/doc-diff-parallel: doc-diff: use single-colon rule in rendering Makefile
2020-03-02advice: change "setupStreamFailure" to "setUpstreamFailure"Heba Waly1-1/+1
fb6fbffbda (advice: keep config name in camelCase in advice_config[], 2018-05-26) changed the config names to camelCase, but one of the names wasn't changed correctly. Fix it. Signed-off-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-02advice: extract vadvise() from advise()Heba Waly1-4/+9
In preparation for a new advice method, extract a version of advise() that uses an explict 'va_list' parameter. Call it from advise() for a functionally equivalent version. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Heba Waly <heba.waly@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-02show_one_mergetag: print non-parent in hex form.Harald van Dijk2-1/+21
When a mergetag names a non-parent, which can occur after a shallow clone, its hash was previously printed as raw data. Print it in hex form instead. Signed-off-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-03git-gui: fix error popup when doing blame -> "Show History Context"Pratyush Yadav1-4/+6
In d9c6469 (git-gui: update status bar to track operations, 2019-12-01) the call to 'ui_status' in 'do_gitk' was updated to create the newly introduced "status bar operation". This allowed this status text to show along with other operations happening in parallel, and removed a race between all these operations. But in that refactor, the fact that 'ui_status' checks for the existence of 'main_status' was overlooked. This leads to an error message popping up when the user selects "Show History Context" from the blame window context menu on a source line. The error occurs because when running "blame" 'main_status' is not initialized. So, add a check for the existence of 'main_status' in 'do_gitk'. This fix reverts to the original behaviour. In the future, we might want to look into a better way of telling 'do_gitk' which status bar to use. Signed-off-by: Pratyush Yadav <me@yadavpratyush.com>
2020-03-01l10n: Update Catalan translationJordi Mas1-58/+52
Signed-off-by: Jordi Mas <jmas@softcatala.org>
2020-02-28fast-import: add options for rewriting submodulesbrian m. carlson3-5/+236
When converting a repository using submodules from one hash algorithm to another, it is necessary to rewrite the submodules from the old algorithm to the new algorithm, since only references to submodules, not their contents, are written to the fast-export stream. Without rewriting the submodules, fast-import fails with an "Invalid dataref" error when encountering a submodule in another algorithm. Add a pair of options, --rewrite-submodules-from and --rewrite-submodules-to, that take a list of marks produced by fast-export and fast-import, respectively, when processing the submodule. Use these marks to map the submodule commits from the old algorithm to the new algorithm. We read marks into two corresponding struct mark_set objects and then perform a mapping from the old to the new using a hash table. This lets us reuse the same mark parsing code that is used elsewhere and allows us to efficiently read and match marks based on their ID, since mark files need not be sorted. Note that because we're using a khash table for the object IDs, and this table copies values of struct object_id instead of taking references to them, it's necessary to zero the struct object_id values that we use to insert and look up in the table. Otherwise, we would end up with SHA-1 values that don't match because of whatever stack garbage might be left in the unused area. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28fast-import: add a generic function to iterate over marksbrian m. carlson1-24/+26
Currently, we can iterate over marks only to dump them to a file. In the future, we'll want to perform an arbitrary operation over the items of a mark set. Add a function, for_each_mark, that iterates over marks in a set and performs an arbitrary callback function for each mark. Switch the mark dumping routine to use this function now that it's available. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28fast-import: make find_marks work on any mark setbrian m. carlson1-11/+10
In the future, we'll use multiple different mark sets with this function, so make it take an argument that points to the mark set to operate on. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28fast-import: add helper function for inserting mark object entriesbrian m. carlson1-15/+22
Currently, everything we want to insert into a mark set is an object entry. However, in the future, we will want to insert objects of other types. Teach read_mark_file to take a function pointer which helps us insert the object we want into our mark set. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28fast-import: permit reading multiple marks filesbrian m. carlson1-14/+18
In the future, we'll want to read marks files for submodules as well. Refactor the existing code to make it possible to read multiple marks files, each into their own marks set. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28Revert "gpg-interface: prefer check_signature() for GPG verification"Junio C Hamano4-72/+75
This reverts commit 72b006f4bfd30b7c5037c163efaf279ab65bea9c, which breaks the end-user experience when merging a signed tag without having the public key. We should report "can't check because we have no public key", but the code with this change claimed that there was no signature.
2020-02-28config.mak.dev: re-enable -Wformat-zero-lengthJeff King1-1/+0
We recently triggered some -Wformat-zero-length warnings in the code, but no developers noticed because we suppress that warning in builds with the DEVELOPER=1 Makefile knob set. But we _don't_ suppress them in a non-developer build (and they're part of -Wall). So even though non-developers probably aren't using -Werror, they see the annoying warnings when they build. We've had back and forth discussion over the years on whether this warning is useful or not. In most cases we've seen, it's not true that the call is a mistake, since we're using its side effects (like adding a newline status_printf_ln()) or writing an empty string to a destination which is handled by the function (as in write_file()). And so we end up working around it in the source by passing ("%s", ""). There's more discussion in the subthread starting at: https://lore.kernel.org/git/xmqqtwaod7ly.fsf@gitster.mtv.corp.google.com/ The short of it is that we probably can't just disable the warning for everybody because of portability issues. And ignoring it for developers puts us in the situation we're in now, where non-dev builds are annoyed. Since the workaround is both rarely needed and fairly straight-forward, let's just commit to doing it as necessary, and re-enable the warning. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-28rebase-interactive.c: silence format-zero-length warningsRalf Thielow1-2/+2
Fixes the following warnings: rebase-interactive.c: In function ‘edit_todo_list’: rebase-interactive.c:137:38: warning: zero-length gnu_printf format string [-Wformat-zero-length] write_file(rebase_path_dropped(), ""); rebase-interactive.c:144:37: warning: zero-length gnu_printf format string [-Wformat-zero-length] write_file(rebase_path_dropped(), ""); Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-27mingw: workaround for hangs when sending STDINAlexandr Miloslavskiy1-28/+3
Explanation ----------- The problem here is flawed `poll()` implementation. When it tries to see if pipe can be written without blocking, it eventually calls `NtQueryInformationFile()` and tests `WriteQuotaAvailable`. However, the meaning of quota was misunderstood. The value of quota is reduced when either some data was written to a pipe, *or* there is a pending read on the pipe. Therefore, if there is a pending read of size >= than the pipe's buffer size, poll() will think that pipe is not writable and will hang forever, usually that means deadlocking both pipe users. I have studied the problem and found that Windows pipes track two values: `QuotaUsed` and `BytesInQueue`. The code in `poll()` apparently wants to know `BytesInQueue` instead of quota. Unfortunately, `BytesInQueue` can only be requested from read end of the pipe, while `poll()` receives write end. The git's implementation of `poll()` was copied from gnulib, which also contains a flawed implementation up to today. I also had a look at implementation in cygwin, which is also broken in a subtle way. It uses this code in `pipe_data_available()`: fpli.WriteQuotaAvailable = (fpli.OutboundQuota - fpli.ReadDataAvailable) However, `ReadDataAvailable` always returns 0 for the write end of the pipe, turning the code into an obfuscated version of returning pipe's total buffer size, which I guess will in turn have `poll()` always say that pipe is writable. The commit that introduced the code doesn't say anything about this change, so it could be some debugging code that slipped in. These are the typical sizes used in git: 0x2000 - default read size in `strbuf_read()` 0x1000 - default read size in CRT, used by `strbuf_getwholeline()` 0x2000 - pipe buffer size in compat\mingw.c As a consequence, as soon as child process uses `strbuf_read()`, `poll()` in parent process will hang forever, deadlocking both processes. This results in two observable behaviors: 1) If parent process begins sending STDIN quickly (and usually that's the case), then first `poll()` will succeed and first block will go through. MAX_IO_SIZE_DEFAULT is 8MB, so if STDIN exceeds 8MB, then it will deadlock. 2) If parent process waits a little bit for any reason (including OS scheduler) and child is first to issue `strbuf_read()`, then it will deadlock immediately even on small STDINs. The problem is illustrated by `git stash push`, which will currently read the entire patch into memory and then send it to `git apply` via STDIN. If patch exceeds 8MB, git hangs on Windows. Possible solutions ------------------ 1) Somehow obtain `BytesInQueue` instead of `QuotaUsed` I did a pretty thorough search and didn't find any ways to obtain the value from write end of the pipe. 2) Also give read end of the pipe to `poll()` That can be done, but it will probably invite some dirty code, because `poll()` * can accept multiple pipes at once * can accept things that are not pipes * is expected to have a well known signature. 3) Make `poll()` always reply "writable" for write end of the pipe Afterall it seems that cygwin (accidentally?) does that for years. Also, it should be noted that `pump_io_round()` writes 8MB blocks, completely ignoring the fact that pipe's buffer size is only 8KB, which means that pipe gets clogged many times during that single write. This may invite a deadlock, if child's STDERR/STDOUT gets clogged while it's trying to deal with 8MB of STDIN. Such deadlocks could be defeated with writing less than pipe's buffer size per round, and always reading everything from STDOUT/STDERR before starting next round. Therefore, making `poll()` always reply "writable" shouldn't cause any new issues or block any future solutions. 4) Increase the size of the pipe's buffer The difference between `BytesInQueue` and `QuotaUsed` is the size of pending reads. Therefore, if buffer is bigger than size of reads, `poll()` won't hang so easily. However, I found that for example `strbuf_read()` will get more and more hungry as it reads large inputs, eventually surpassing any reasonable pipe buffer size. Chosen solution --------------- Make `poll()` always reply "writable" for write end of the pipe. Hopefully one day someone will find a way to implement it properly. Reproduction ------------ printf "%8388608s" X >large_file.txt git stash push --include-untracked -- large_file.txt I have decided not to include this as test to avoid slowing down the test suite. I don't expect the specific problem to come back, and chances are that `git stash push` will be reworked to avoid sending the entire patch via STDIN. Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-02-27Documentation: clarify that `-h` alone stands for `help`Junio C Hamano2-1/+8
We seem to be getting new users who get confused every 20 months or so with this "-h consistently wants to give help, but the commands to which `-h` may feel like a good short-form option want it to mean something else." compromise. Let's make sure that the readers know that `git cmd -h` (with no other arguments) is a way to get usage text, even for commands like ls-remote and grep. Also extend the description that is already in gitcli.txt, as it is clear that users still get confused with the current text. Signed-off-by: Junio C Hamano <gitster@pobox.com>