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2021-10-01difftool: refactor dir-diff to write files using helper functionsDavid Aguilar1-22/+28
Add a helpers function to handle the unlinking and writing of the dir-diff submodule and symlink stand-in files. Use the helpers to implement the guts of the hashmap loops. This eliminate duplicate code and safeguards the submodules hashmap loop against the symlink-chasing behavior that 5bafb3576a (difftool: fix symlink-file writing in dir-diff mode, 2021-09-22) addressed. The submodules loop should not strictly require the unlink() call that this is introducing to them, but it does not necessarily hurt them either beyond the cost of the extra unlink(). Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-01difftool: create a tmpdir path without repeated slashesDavid Aguilar2-26/+31
The paths generated by difftool are passed to user-facing diff tools. Using paths with repeated slashes in them is a cosmetic blemish that is exposed to users and can be avoided. Use a strbuf to create the buffer used for the dir-diff tmpdir. Strip trailing slashes from the value read from TMPDIR to avoid repeated slashes in the generated paths. Adjust the error handling to avoid leaking strbufs and to avoid returning -1 to cmd_main(). Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23difftool: fix symlink-file writing in dir-diff modeDavid Aguilar2-2/+67
The difftool dir-diff mode handles symlinks by replacing them with their readlink(2) values. This allows diff tools to see changes to symlinks as if they were regular text diffs with the old and new path values. This is analogous to what "git diff" displays when symlinks change. The temporary diff directories that are created initially contain symlinks because they get checked-out using a temporary index that retains the original symlinks as checked-in to the repository. A bug was introduced when difftool was rewritten in C that made difftool write the readlink(2) contents into the pointed-to file rather than the symlink itself. The write was going through the symlink and writing to its target rather than writing to the symlink path itself. Replace symlinks with raw text files by unlinking the symlink path before writing the readlink(2) content into them. When 18ec800512 (difftool: handle modified symlinks in dir-diff mode, 2017-03-15) added handling for modified symlinks this bug got recorded in the test suite. The tests included the pointed-to symlink target paths. These paths were being reported because difftool was erroneously writing to them, but they should have never been reported nor written. Correct the modified-symlinks test cases by removing the target files from the expected output. Add a test to ensure that symlinks are written with the readlink(2) values and that the target files contain their original content. Reported-by: Alan Blotz <work@blotz.org> Helped-by: Đoàn Trần Công Danh <congdanhqx@gmail.com> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-15The sixth batchJunio C Hamano1-0/+30
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13parse-options API: remove OPTION_ARGUMENT featureÆvar Arnfjörð Bjarmason6-28/+3
As was noted in 1a85b49b87a (parse-options: make OPT_ARGUMENT() more useful, 2019-03-14) there's only ever been one user of the OPT_ARGUMENT(), that user was added in 20de316e334 (difftool: allow running outside Git worktrees with --no-index, 2019-03-14). The OPT_ARGUMENT() feature itself was added way back in 580d5bffdea (parse-options: new option type to treat an option-like parameter as an argument., 2008-03-02), but as discussed in 1a85b49b87a wasn't used until 20de316e334 in 2019. Now that the preceding commit has migrated this code over to using "struct strvec" to manage the "args" member of a "struct child_process", we can just use that directly instead of relying on OPT_ARGUMENT. This has a minor change in behavior in that if we'll pass --no-index we'll now always pass it as the first argument, before we'd pass it in whatever position the caller did. Preserving this was the real value of OPT_ARGUMENT(), but as it turns out we didn't need that either. We can always inject it as the first argument, the other end will parse it just the same. Note that we cannot remove the "out" and "cpidx" members of "struct parse_opt_ctx_t" added in 580d5bffdea, while they were introduced with OPT_ARGUMENT() we since used them for other things. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13difftool: use run_command() API in run_file_diff()Ævar Arnfjörð Bjarmason1-7/+6
Change the run_file_diff() function to use the run_command() API directly, instead of invoking the run_command_v_opt_cd_env() wrapper. This allows it, like run_dir_diff(), to use the "args" from "struct strvec", instead of the "const char **argv" passed into cmd_difftool(). This will be used in the subsequent commit to get rid of OPT_ARGUMENT() from cmd_difftool(). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13difftool: prepare "diff" cmdline in cmd_difftool()Jeff King1-8/+7
We call into either run_dir_diff() or run_file_diff(), each of which sets up a child argv starting with "diff" and some hard-coded options (depending on which mode we're using). Let's extract that logic into the caller, which will make it easier to modify the options for cases which affect both functions. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-13difftool: prepare "struct child_process" in cmd_difftool()Ævar Arnfjörð Bjarmason1-14/+15
Move the preparation of the "struct child_process" from run_dir_diff() to its only caller, cmd_difftool(). This is in preparation for migrating run_file_diff() to using the run_command() API directly, and to move more of the shared setup of the two to cmd_difftool(). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-10The fifth batchJunio C Hamano1-0/+61
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08The fourth batchJunio C Hamano1-0/+33
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08pack-write: skip *.rev work when not writing *.revÆvar Arnfjörð Bjarmason1-0/+3
Fix a performance regression introduced in a587b5a786 (pack-write.c: extract 'write_rev_file_order', 2021-03-30) and stop needlessly allocating the "pack_order" array and sorting it with "pack_order_cmp()", only to throw that work away when we discover that we're not writing *.rev files after all. This redundant work was not present in the original version of this code added in 8ef50d9958 (pack-write.c: prepare to write 'pack-*.rev' files, 2021-01-25). There we'd call write_rev_file() from e.g. finish_tmp_packfile(), but we'd "return NULL" early in write_rev_file() if not doing a "WRITE_REV" or "WRITE_REV_VERIFY". Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08hash-object: prefix_filename() returns allocated memory these daysJunio C Hamano1-1/+1
Back when a1be47e4 (hash-object: fix buffer reuse with --path in a subdirectory, 2017-03-20) was written, the prefix_filename() helper used a static piece of memory to the caller, making the caller responsible for copying it, if it wants to keep it across another call to the same function. Two callers of the prefix_filename() in hash-object were made to xstrdup() the value obtained from it. But in the same series, when e4da43b1 (prefix_filename: return newly allocated string, 2017-03-20) changed the rule to gave the caller possession of the memory, we forgot to revert one of the xstrdup() changes, allowing the returned value to leak. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07Documentation: fix default directory of git bugreport -oBagas Sanjaya1-2/+2
git bugreport writes bug report to the current directory by default, instead of repository root. Fix the documentation. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07Makefile: remove the check_bindir scriptÆvar Arnfjörð Bjarmason2-15/+1
This script was added in f28ac70f48 (Move all dashed-form commands to libexecdir, 2007-11-28) when commands such as "git-add" lived in the bin directory, instead of the git exec directory. This notice helped someone incorrectly installing version v1.6.0 and later into a directory built for a pre-v1.6.0 git version. We're now long past the point where anyone who'd be helped by this warning is likely to be doing that, so let's just remove this check and warning to simplify the Makefile. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07send-email: fix a "first config key wins" regression in v2.33.0Ævar Arnfjörð Bjarmason2-1/+16
Fix a regression in my c95e3a3f0b8 (send-email: move trivial config handling to Perl, 2021-05-28) where we'd pick the first config key out of multiple defined ones, instead of using the normal "last key wins" semantics of "git config --get". This broke e.g. cases where a .git/config would have a different sendemail.smtpServer than ~/.gitconfig. We'd pick the ~/.gitconfig over .git/config, instead of preferring the repository-local version. The same would go for /etc/gitconfig etc. The full list of impacted config keys (the %config_settings values which are references to scalars, not arrays) is: sendemail.smtpencryption sendemail.smtpserver sendemail.smtpserverport sendemail.smtpuser sendemail.smtppass sendemail.smtpdomain sendemail.smtpauth sendemail.smtpbatchsize sendemail.smtprelogindelay sendemail.tocmd sendemail.cccmd sendemail.aliasfiletype sendemail.envelopesender sendemail.confirm sendemail.from sendemail.assume8bitencoding sendemail.composeencoding sendemail.transferencoding sendemail.sendmailcmd I.e. having any of these set in say ~/.gitconfig and in-repo .git/config regressed in v2.33.0 to prefer the --global one over the --local. To test this add a test of config priority to one of these config variables, most don't have tests at all, but there was an existing one for sendemail.8bitEncoding. The "git config" (instead of "test_config") is somewhat of an anti-pattern, but follows established conventions in t9001-send-email.sh, likewise with any other pattern or idiom in this test. The populating of home/.gitconfig and setting of HOME= is copied from a test in t0017-env-helper.sh added in 1ff750b128e (tests: make GIT_TEST_GETTEXT_POISON a boolean, 2019-06-21). This test fails without this bugfix, but now it works. Reported-by: Eli Schwartz <eschwartz@archlinux.org> Tested-by: Eli Schwartz <eschwartz@archlinux.org> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07range-diff: avoid segfault with -IRené Scharfe1-0/+3
output() reuses the same struct diff_options for multiple calls of diff_flush(). Set the option no_free to instruct it to keep the ignore regexes between calls and release them explicitly at the end. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07diff-index: restore -c/--cc options handlingSergey Organov3-14/+8
This fixes 19b2517f (diff-merges: move specific diff-index "-m" handling to diff-index, 2021-05-21). That commit disabled handling of all diff for merges options in diff-index on an assumption that they are unused. However, it later appeared that -c and --cc, even though undocumented and not being covered by tests, happen to have had particular effect on diff-index output. Restore original -c/--cc options handling by diff-index. Signed-off-by: Sergey Organov <sorganov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07test-lib-functions: keep user's debugger config files and TERM in 'debug'Philippe Blain2-16/+50
The 'debug' function in test-lib-functions.sh is used to invoke a debugger at a specific line in a test. It inherits the value of HOME and TERM set by 'test-lib.sh': HOME="$TRASH_DIRECTORY" and TERM=dumb. Changing the value of HOME means that any customization configured in a developers' debugger configuration file (like $HOME/.gdbinit or $HOME/.lldbinit) are not available in the debugger invoked by 'test_pause'. Changing the value of TERM to 'dumb' means that colored output is disabled in the debugger. To make the debugging experience with 'debug' more pleasant, leverage the variable USER_HOME, added in the previous commit, to copy a developer's ~/.gdbinit and ~/.lldbinit to the test HOME. We do not set HOME to USER_HOME as in 'test_pause' to avoid user configuration in $USER_HOME/.gitconfig from interfering with the command being debugged. Also, add a flag to launch the debugger with the original value of TERM, and add the same warning as for 'test_pause'. Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Acked-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07test-lib-functions: optionally keep HOME, TERM and SHELL in 'test_pause'Philippe Blain3-5/+53
The 'test_pause' function, which is designed to help interactive debugging and exploration of tests, currently inherits the value of HOME and TERM set by 'test-lib.sh': HOME="$TRASH_DIRECTORY" and TERM=dumb. It also invokes the shell defined by TEST_SHELL_PATH, which defaults to /bin/sh (through SHELL_PATH). Changing the value of HOME means that any customization configured in a developers' shell startup files and any Git aliases defined in their global Git configuration file are not available in the shell invoked by 'test_pause'. Changing the value of TERM to 'dumb' means that colored output is disabled for all commands in that shell. Using /bin/sh as the shell invoked by 'test_pause' is not ideal since some platforms (i.e. Debian and derivatives) use Dash as /bin/sh, and this shell is usually compiled without readline support, which makes for a poor interactive command line experience. To make the interactive command line experience in the shell invoked by 'test_pause' more pleasant, save the values of HOME and TERM in USER_HOME and USER_TERM before changing them in test-lib.sh, and add options to 'test_pause' to optionally use these variables to invoke the shell. Also add an option to invoke SHELL instead of TEST_SHELL_PATH, so that developer's interactive shell is used. We use options instead of changing the behaviour unconditionally since these three variables can slightly change command behaviour. Moreover, using the original HOME means commands could overwrite files in a user's home directory. Be explicit about these caveats in the new 'Usage' section in test-lib-functions.sh. Finally, add '[options]' to the test_pause synopsys in t/README, and mention that the full list of helper functions and their options can be found in test-lib-functions.sh. Helped-by: Elijah Newren <newren@gmail.com> Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Acked-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-07test-lib-functions: use 'TEST_SHELL_PATH' in 'test_pause'Philippe Blain1-1/+1
3f824e91c8 (t/Makefile: introduce TEST_SHELL_PATH, 2017-12-08) made it easy to use a different shell for the tests than 'SHELL_PATH' used at compile time. But 'test_pause' still invokes 'SHELL_PATH'. If TEST_SHELL_PATH is set, invoke that shell in 'test_pause' for consistency. Suggested-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Acked-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-06make: add INSTALL_STRIP option variableBagas Sanjaya1-3/+12
Add $(INSTALL_STRIP), which allows passing stripping options to $(INSTALL). For this to work, installing executables must be split to installing compiled binaries and scripts portions, since $(INSTALL_STRIP) is only meaningful to the former. Users can set this variable depending on their system. For example, Linux users can use `-s --strip-program=strip`, while FreeBSD users can simply set to `-s` and choose strip program with $STRIPBIN. [original outline by Đoàn Trần Công Danh] Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-06apply: resolve trivial merge without hitting ll-merge with "--3way"Junio C Hamano2-0/+66
The ll_binary_merge() function assumes that the ancestor blob is different from either side of the new versions, and always fails the merge in conflict, unless -Xours or -Xtheirs is in effect. The normal "merge" machineries all resolve the trivial cases (e.g. if our side changed while their side did not, the result is ours) without triggering the file-level merge drivers, so the assumption is warranted. The code path in "git apply --3way", however, does not check for the trivial three-way merge situation and always calls the file-level merge drivers. This used to be perfectly OK back when we always first attempted a straight patch application and used the three-way code path only as a fallback. Any binary patch that can be applied as a trivial three-way merge (e.g. the patch is based exactly on the version we happen to have) would always cleanly apply, so the ll_binary_merge() that is not prepared to see the trivial case would not have to handle such a case. This no longer is true after we made "--3way" to mean "first try three-way and then fall back to straight application", and made "git apply -3" on a binary patch that is based on the current version no longer apply. Teach "git apply -3" to first check for the trivial merge cases and resolve them without hitting the file-level merge drivers. Signed-off-by: Jerry Zhang <jerry@skydio.com> [jc: stolen tests from Jerry's patch] Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-03The third batchJunio C Hamano1-0/+25
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-02remote: avoid -Wunused-but-set-variable in gcc with -DNDEBUGCarlo Marcelo Arenas Belón1-3/+3
In make_remote(), we store the return value of hashmap_put() and check it using assert(), but don't otherwise use it. If Git is compiled with NDEBUG, then the assert() becomes a noop, and nobody looks at the variable at all. This causes some compilers to produce warnings. Let's switch it instead to a BUG(). This accomplishes the same thing, but is always compiled in (and we don't have to worry about the cost; the check is cheap, and this is not a hot code path). Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-02gc: remove trailing dot from "gc.log" lineÆvar Arnfjörð Bjarmason1-1/+1
Remove the trailing dot from the warning we emit about gc.log. It's common for various terminal UX's to allow the user to select "words", and by including the trailing dot a user wanting to select the path to gc.log will need to manually remove the trailing dot. Such a user would also probably need to adjust the path if it e.g. had spaces in it, but this should address this very common case. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Suggested-by: Jan Judas <snugar.i@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-01docs: clarify the interaction of transfer.hideRefs and namespacesKim Altintop1-5/+9
Expand the section about namespaces in the documentation of `transfer.hideRefs` to point out the subtle differences between `upload-pack` and `receive-pack`. ffcfb68176 (upload-pack.c: treat want-ref relative to namespace, 2021-07-30) taught `upload-pack` to reject `want-ref`s for hidden refs, which is now mentioned. It is clarified that at no point the name of a hidden ref is revealed, but the object id it points to may. Signed-off-by: Kim Altintop <kim@eagain.st> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-01upload-pack.c: treat want-ref relative to namespaceKim Altintop2-7/+146
When 'upload-pack' runs within the context of a git namespace, treat any 'want-ref' lines the client sends as relative to that namespace. Also check if the wanted ref is hidden via 'hideRefs'. If it is hidden, respond with an error as if the ref didn't exist. Helped-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Kim Altintop <kim@eagain.st> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-01t5730: introduce fetch command helperKim Altintop1-36/+37
Assembling a "raw" fetch command to be fed directly to "test-tool serve-v2" is extracted into a test helper. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Kim Altintop <kim@eagain.st> Reviewed-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31mailmap.c: fix a memory leak in free_mailap_{info,entry}()Ævar Arnfjörð Bjarmason1-0/+2
In the free_mailmap_entry() code added in 0925ce4d49 (Add map_user() and clear_mailmap() to mailmap, 2009-02-08) the intent was clearly to clear the "me" structure, but while we freed parts of the mailmap_entry structure, we didn't free the structure itself. The same goes for the "mailmap_info" structure. This brings the number of SANITIZE=leak failures in t4203-mailmap.sh down from 50 to 49. Not really progress as far as the number of failures is concerned, but as far as I can tell this fixes all leaks in mailmap.c itself. There's still users of it such as builtin/log.c that call read_mailmap() without a clear_mailmap(), but that's on them. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31userdiff: support enum keyword in PHP hunk headerUSAMI Kenta2-1/+5
"enum" keyword will be introduced in PHP 8.1. https://wiki.php.net/rfc/enumerations Signed-off-by: USAMI Kenta <tadsan@zonu.me> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31fast-export: fix anonymized tag using original lengthTal Kelrich2-4/+7
Commit 7f4075949686 (fast-export: tighten anonymize_mem() interface to handle only strings, 2020-06-23) changed the interface used in anonymizing strings, but failed to update the size of annotated tag messages to match the new anonymized string. As a result, exporting tags having messages longer than 13 characters would create output that couldn't be parsed by fast-import, as the data length indicated was larger than the data output. Reset the message size when anonymizing, and add a tag with a "long" message to the test. Signed-off-by: Tal Kelrich <hasturkun@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31protocol-caps.c: fix memory leak in send_info()Ævar Arnfjörð Bjarmason1-2/+3
Fix a memory leak in a2ba162cda (object-info: support for retrieving object info, 2021-04-20) which appears to have been based on a misunderstanding of how the pkt-line.c API works. There is no need to strdup() input to packet_writer_write(), it's just a printf()-like format function. This fixes a potentially large memory leak, since the number of OID lines the "object-info" call can be arbitrarily large (or a small one if the request is small). This makes t5701-git-serve.sh pass again under SANITIZE=leak, as it did before a2ba162cda2. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Acked-by: Bruno Albuquerque <bga@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: show "unexpected subcommand" errorÆvar Arnfjörð Bjarmason2-1/+16
Bring the "commit-graph" command in line with the error output and general pattern in cmd_multi_pack_index(). Let's test for that output, and also cover the same potential bug as was fixed in the multi-pack-index command in 88617d11f9d (multi-pack-index: fix potential segfault without sub-command, 2021-07-19). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: show usage on "commit-graph [write|verify] garbage"Ævar Arnfjörð Bjarmason2-0/+9
Change the parse_options() invocation in the commit-graph code to error on unknown leftover argv elements, in addition to the existing and implicit erroring via parse_options() on unknown options. We'd already error in cmd_commit_graph() on e.g.: git commit-graph unknown verify git commit-graph --unknown verify But here we're calling parse_options() twice more for the "write" and "verify" subcommands. We did not do the same checking for leftover argv elements there. As a result we'd silently accept garbage in these subcommands, let's not do that. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: early exit to "usage" on !argcÆvar Arnfjörð Bjarmason1-6/+7
Rather than guarding all of the !argc with an additional "if" arm let's do an early goto to "usage". This also makes it clear that "save_commit_buffer" is not needed in this case. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31multi-pack-index: refactor "goto usage" patternÆvar Arnfjörð Bjarmason1-6/+5
Refactor the "goto usage" pattern added in cd57bc41bbc (builtin/multi-pack-index.c: display usage on unrecognized command, 2021-03-30) and 88617d11f9d (multi-pack-index: fix potential segfault without sub-command, 2021-07-19) to maintain the same brevity, but in a form that doesn't run afoul of the recommendation in CodingGuidelines about braces: When there are multiple arms to a conditional and some of them require braces, enclose even a single line block in braces for consistency[...] Let's also change "argv == 0" to juts "!argv", per: Do not explicitly compare an integral value with constant 0 or '\0', or a pointer value with constant NULL[...] I'm changing this because in a subsequent commit I'll make builtin/commit-graph.c use the same pattern, having the two similarly structured commands match aids readability. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: use parse_options_concat()Ævar Arnfjörð Bjarmason1-16/+21
Make use of the parse_options_concat() so we don't need to copy/paste common options like --object-dir. This is inspired by a similar change to "checkout" in 2087182272 (checkout: split options[] array in three pieces, 2019-03-29), and the same pattern in the multi-pack-index command, see 60ca94769ce (builtin/multi-pack-index.c: split sub-commands, 2021-03-30). A minor behavior change here is that now we're going to list both --object-dir and --progress first, before we'd list --progress along with other options. Co-authored-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: remove redundant handling of -hÆvar Arnfjörð Bjarmason1-4/+0
If we don't handle the -h option here like most parse_options() users we'll fall through and it'll do the right thing for us. I think this code added in 4ce58ee38d (commit-graph: create git-commit-graph builtin, 2018-04-02) was always redundant, parse_options() did this at the time, and the commit-graph code never used PARSE_OPT_NO_INTERNAL_HELP. We don't need a test for this, it's tested by the t0012-help.sh test added in d691551192a (t0012: test "-h" with builtins, 2017-05-30). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31commit-graph: define common usage with a macroÆvar Arnfjörð Bjarmason1-14/+17
Share the usage message between these three variables by using a macro. Before this new options needed to copy/paste the usage information, see e.g. 809e0327f5 (builtin/commit-graph.c: introduce '--max-new-filters=<n>', 2020-09-18). See b25b727494f (builtin/multi-pack-index.c: define common usage with a macro, 2021-03-30) for another use of this pattern (but on-list this one came first). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31sequencer: advise if skipping cherry-picked commitJosh Steadmon7-6/+38
Silently skipping commits when rebasing with --no-reapply-cherry-picks (currently the default behavior) can cause user confusion. Issue warnings when this happens, as well as advice on how to preserve the skipped commits. These warnings and advice are displayed only when using the (default) "merge" rebase backend. Update the git-rebase docs to mention the warnings and advice. Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31The second batchJunio C Hamano1-0/+29
The most significant of this batch is of course "merge -sort". Thanks, Elijah and everybody who helped the topic. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30clone: set submodule.recurse=true if submodule.stickyRecursiveClone enabledMahi Kolla2-0/+17
Based on current experience, when running git clone --recurse-submodules, developers do not expect other commands such as pull or checkout to run recursively into active submodules. However, setting submodule.recurse=true at this step could make for a simpler workflow by eliminating the need for the --recurse-submodules option in subsequent commands. To collect more data on developers' preference in regards to making submodule.recurse=true a default config value in the future, deploy this feature under the opt in submodule.stickyRecursiveClone flag. Signed-off-by: Mahi Kolla <mkolla2@illinois.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30send-email: avoid incorrect header propagationMarvin Häuser2-9/+62
If multiple independent patches are sent with send-email, even if the "In-Reply-To" and "References" headers are not managed by --thread or --in-reply-to, their values may be propagated from prior patches to subsequent patches with no such headers defined. To mitigate this and potential future issues, make sure all global patch-specific variables are always either handled by command-specific code (e.g. threading), or are reset to their default values for every iteration. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Marvin Häuser <mhaeuser@posteo.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30fetch: skip formatting updated refs with `--quiet`Patrick Steinhardt1-5/+12
When fetching, Git will by default print a list of all updated refs in a nicely formatted table. In order to come up with this table, Git needs to iterate refs twice: first to determine the maximum column width, and a second time to actually format these changed refs. While this table will not be printed in case the user passes `--quiet`, we still go out of our way and do all these steps. In fact, we even do more work compared to not passing `--quiet`: without the flag, we will skip all references in the column width computation which have not been updated, but if it is set we will now compute widths for all refs. Fix this issue by completely skipping both preparation of the format and formatting data for display in case the user passes `--quiet`, improving performance especially with many refs. The following benchmark shows a nice speedup for a quiet mirror-fetch in a repository with 2.3M refs: Benchmark #1: HEAD~: git-fetch Time (mean ± σ): 26.929 s ± 0.145 s [User: 24.194 s, System: 4.656 s] Range (min … max): 26.692 s … 27.068 s 5 runs Benchmark #2: HEAD: git-fetch Time (mean ± σ): 25.189 s ± 0.094 s [User: 22.556 s, System: 4.606 s] Range (min … max): 25.070 s … 25.314 s 5 runs Summary 'HEAD: git-fetch' ran 1.07 ± 0.01 times faster than 'HEAD~: git-fetch' While at it, this patch also fixes `adjust_refcol_width()` such that it skips unchanged refs in case the user passed `--quiet`, where verbosity will be negative. While this function won't be called anymore if so, this brings the comment in line with actual code. Furthermore, needless `verbosity >= 0` checks are now removed in `store_updated_refs()`: we never print to the `note` buffer anymore in case `verbosity < 0`, so we won't end up in that code block anyway. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30merge-recursive: use fspathcmp() in path_hashmap_cmp()René Scharfe1-4/+1
Call fspathcmp() instead of open-coding it. This shortens the code and makes it less repetitive. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30test-lib: set GIT_CEILING_DIRECTORIES to protect the surrounding repositorySZEDER Gábor1-1/+2
Every once in a while a test somehow manages to escape from its trash directory and modifies the surrounding repository, whether because of a bug in git itself, a bug in a test [1], or e.g. when trying to run tests with a shell that is, in general, unable to run our tests [2]. Set GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/.." as an additional safety measure to protect the surrounding repository at least from modifications by git commands executed in the tests (assuming that handling of ceiling directories during repository discovery is not broken, and, of course, it won't save us from regular shell commands, e.g. 'cd .. && rm -f ...'). [1] e.g. https://public-inbox.org/git/20210423051255.GD2947267@szeder.dev [2] $ git symbolic-ref HEAD refs/heads/master $ ksh ./t2011-checkout-invalid-head.sh [... a lot of "not ok" ...] $ git symbolic-ref HEAD refs/heads/other (In short: 'ksh' doesn't support the 'local' builtin command, which is used by 'test_oid', causing it to return with error whenever it's called, leaving ZERO_OID set to empty, so when the test 'checkout main from invalid HEAD' runs 'echo $ZERO_OID >.git/HEAD' it writes a corrupt (not invalid) HEAD, and subsequent git commands don't recognize the repository in the trash directory anymore, but operate on the surrounding repo.) Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30doc: fix syntax error and the format of printfZoker1-2/+2
Fix syntax and correct the format of printf in MyFirstObjectWalk.txt Signed-off-by: Zoker <kaixuanguiqu@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30sparse-index: copy dir_hash in ensure_full_index()Jeff Hostetler1-0/+1
Copy the 'index_state->dir_hash' back to the real istate after expanding a sparse index. A crash was observed in 'git status' during some hashmap lookups with corrupted hashmap entries. During an index expansion, new cache-entries are added to the 'index_state->name_hash' and the 'dir_hash' in a temporary 'index_state' variable 'full'. However, only the 'name_hash' hashmap from this temp variable was copied back into the real 'istate' variable. The original copy of the 'dir_hash' was incorrectly preserved. If the table in the 'full->dir_hash' hashmap were realloced, the stale version (in 'istate') would be corrupted. The test suite does not operate on index sizes sufficiently large to trigger this reallocation, so they do not cover this behavior. Increasing the test suite to cover such scale is fragile and likely wasteful. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30builtin/pack-objects.c: remove duplicate hash lookupTaylor Blau2-11/+1
In the original code from 08cdfb1337 (pack-objects --keep-unreachable, 2007-09-16), we add each object to the packing list with type `obj->type`, where `obj` comes from `lookup_unknown_object()`. Unless we had already looked up and parsed the object, this will be `OBJ_NONE`. That's fine, since oe_set_type() sets the type_valid bit to '0', and we determine the real type later on. So the only thing we need from the object lookup is access to the `flags` field so that we can mark that we've added the object with `OBJECT_ADDED` to avoid adding it again (we can just pass `OBJ_NONE` directly instead of grabbing it from the object). But add_object_entry() already rejects duplicates! This has been the behavior since 7a979d99ba (Thin pack - create packfile with missing delta base., 2006-02-19), but 08cdfb1337 didn't take advantage of it. Moreover, to do the OBJECT_ADDED check, we have to do a hash lookup in `obj_hash`. So we can drop the lookup_unknown_object() call completely, *and* the OBJECT_ADDED flag, too, since the spot we're touching here is the only location that checks it. In the end, we perform the same number of hash lookups, but with the added bonus that we don't waste memory allocating an OBJ_NONE object (if we were traversing, we'd need it eventually, but the whole point of this code path is not to traverse). Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-30builtin/pack-objects.c: simplify add_objects_in_unpacked_packs()Taylor Blau1-68/+16
This function is used to implement `pack-objects`'s `--keep-unreachable` option, but can be simplified in a couple of ways: - add_objects_in_unpacked_packs() iterates over all packs (and then all packed objects) itself, but could use for_each_packed_object() instead since the missing flags necessary were added in the previous commit - objects are added to an in_pack array which store (off_t, object) tuples, and then sorted in offset order when we could iterate objects in offset order. There is a slight behavior change here: before we would have added objects in sorted offset order among _all_ packs. Handing objects to create_object_entry() in pack order for each pack (instead of feeding objects from all packs simultaneously their offset relative to different packs) is much more reasonable, if different than how the code currently works. - objects in a single pack are iterated in index order and searched for in order to discover their offsets, which is much less efficient than using the on-disk reverse index Simplify the function by addressing each of the above and moving the core of the loop into a callback function that we then pass to for_each_packed_object() instead of open-coding the latter function ourselves. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>