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2018-09-04Merge branch 'es/freebsd-iconv-portability'Libravatar Junio C Hamano1-1/+11
Build fix. * es/freebsd-iconv-portability: config.mak.uname: resolve FreeBSD iconv-related compilation warning
2018-09-04Merge branch 'ds/commit-graph-lockfile-fix'Libravatar Junio C Hamano1-1/+4
"git merge-base" in 2.19-rc1 has performance regression when the (experimental) commit-graph feature is in use, which has been mitigated. * ds/commit-graph-lockfile-fix: commit: don't use generation numbers if not needed
2018-09-04Merge branch 'en/directory-renames-nothanks'Libravatar Junio C Hamano4-6/+124
Recent addition of "directory rename" heuristics to the merge-recursive backend makes the command susceptible to false positives and false negatives. In the context of "git am -3", which does not know about surrounding unmodified paths and thus cannot inform the merge machinery about the full trees involved, this risk is particularly severe. As such, the heuristic is disabled for "git am -3" to keep the machinery "more stupid but predictable". * en/directory-renames-nothanks: am: avoid directory rename detection when calling recursive merge machinery merge-recursive: add ability to turn off directory rename detection t3401: add another directory rename testcase for rebase and am
2018-09-04Merge branch 'pw/rebase-i-author-script-fix'Libravatar Junio C Hamano2-12/+53
Recent "git rebase -i" update started to write bogusly formatted author-script, with a matching broken reading code. These are fixed. * pw/rebase-i-author-script-fix: sequencer: fix quoting in write_author_script sequencer: handle errors from read_author_ident()
2018-08-31config.mak.uname: resolve FreeBSD iconv-related compilation warningLibravatar Eric Sunshine1-1/+11
OLD_ICONV has long been needed by FreeBSD so config.mak.uname defines it unconditionally. However, recent versions do not need it, and its presence results in compilation warnings. Resolve this issue by defining OLD_ICONV only for older FreeBSD versions. Specifically, revision r281550[1], which is part of FreeBSD 11, removed the need for OLD_ICONV, and r282275[2] back-ported that change to 10.2. Versions prior to 10.2 do need it. [1] https://github.com/freebsd/freebsd/commit/b0813ee288f64f677a2cebf7815754b027a8215b [2] https://github.com/freebsd/freebsd/commit/b709ec868adb5170d09bc5a66b18d0e0d5987ab6 [es: commit message; tweak version check to distinguish 10.x versions] Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-30commit: don't use generation numbers if not neededLibravatar Derrick Stolee1-1/+4
In 3afc679b "commit: use generations in paint_down_to_common()", the queue in paint_down_to_common() was changed to use a priority order based on generation number before commit date. This served two purposes: 1. When generation numbers are present, the walk guarantees correct topological relationships, regardless of clock skew in commit dates. 2. It enables short-circuiting the walk when the min_generation parameter is added in d7c1ec3e "commit: add short-circuit to paint_down_to_common()". This short-circuit helps commands like 'git branch --contains' from needing to walk to a merge base when we know the result is false. The commit message for 3afc679b includes the following sentence: This change does not affect the number of commits that are walked during the execution of paint_down_to_common(), only the order that those commits are inspected. This statement is incorrect. Because it changes the order in which the commits are inspected, it changes the order they are added to the queue, and hence can change the number of loops before the queue_has_nonstale() method returns true. This change makes a concrete difference depending on the topology of the commit graph. For instance, computing the merge-base between consecutive versions of the Linux kernel has no effect for versions after v4.9, but 'git merge-base v4.8 v4.9' presents a performance regression: v2.18.0: 0.122s v2.19.0-rc1: 0.547s HEAD: 0.127s To determine that this was simply an ordering issue, I inserted a counter within the while loop of paint_down_to_common() and found that the loop runs 167,468 times in v2.18.0 and 635,579 times in v2.19.0-rc1. The topology of this case can be described in a simplified way here: v4.9 | \ | \ v4.8 \ | \ \ | \ | ... A B | / / | / / |/__/ C Here, the "..." means "a very long line of commits". By generation number, A and B have generation one more than C. However, A and B have commit date higher than most of the commits reachable from v4.8. When the walk reaches v4.8, we realize that it has PARENT1 and PARENT2 flags, so everything it can reach is marked as STALE, including A. B has only the PARENT1 flag, so is not STALE. When paint_down_to_common() is run using compare_commits_by_commit_date, A and B are removed from the queue early and C is inserted into the queue. At this point, C and the rest of the queue entries are marked as STALE. The loop then terminates. When paint_down_to_common() is run using compare_commits_by_gen_then_commit_date, B is removed from the queue only after the many commits reachable from v4.8 are explored. This causes the loop to run longer. The reason for this regression is simple: the queue order is intended to not explore a commit until everything that _could_ reach that commit is explored. From the information gathered by the original ordering, we have no guarantee that there is not a commit D reachable from v4.8 that can also reach B. We gained absolute correctness in exchange for a performance regression. The performance regression is probably the worse option, since these incorrect results in paint_down_to_common() are rare. The topology required for the performance regression are less rare, but still require multiple merge commits where the parents differ greatly in generation number. In our example above, the commit A is as important as the commit B to demonstrate the problem, since otherwise the commit C will sit in the queue as non-stale just as long in both orders. The solution provided uses the min_generation parameter to decide if we should use generation numbers in our ordering. When min_generation is equal to zero, it means that the caller has no known cutoff for the walk, so we should rely on our commit-date heuristic as before; this is the case with merge_bases_many(). When min_generation is non-zero, then the caller knows a valuable cutoff for the short-circuit mechanism; this is the case with remove_redundant() and in_merge_bases_many(). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-30am: avoid directory rename detection when calling recursive merge machineryLibravatar Elijah Newren2-2/+3
Let's say you have the following three trees, where Base is from one commit behind either master or branch: Base : bar_v1, foo/{file1, file2, file3} branch: bar_v2, foo/{file1, file2}, goo/file3 master: bar_v3, foo/{file1, file2, file3} Using git-am (or am-based rebase) to apply the changes from branch onto master results in the following tree: Result: bar_merged, goo/{file1, file2, file3} This is not what users want; they did not rename foo/ -> goo/, they only renamed one file within that directory. The reason this happens is am constructs fake trees (via build_fake_ancestor()) of the following form: Base_bfa : bar_v1, foo/file3 branch_bfa: bar_v2, goo/file3 Combining these two trees with master's tree: master: bar_v3, foo/{file1, file2, file3}, You can see that merge_recursive_generic() would see branch_bfa as renaming foo/ -> goo/, and master as just adding both foo/file1 and foo/file2. As such, it ends up with goo/{file1, file2, file3} The core problem is that am does not have access to the original trees; it can only construct trees using the blobs involved in the patch. As such, it is not safe to perform directory rename detection within am -3. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-30merge-recursive: add ability to turn off directory rename detectionLibravatar Elijah Newren2-5/+14
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-30t3401: add another directory rename testcase for rebase and amLibravatar Elijah Newren1-1/+109
Similar to commit 16346883ab ("t3401: add directory rename testcases for rebase and am", 2018-06-27), add another testcase for directory rename detection. This new testcase differs in that it showcases a situation where no directory rename was performed, but which some backends incorrectly detect. As with the other testcase, run this in conjunction with each of the types of rebases: git-rebase--interactive git-rebase--am git-rebase--merge and also use the same testcase for git am --3way Reported-by: Nikolay Kasyanov <corrmage@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-28Git 2.19-rc1Libravatar Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-27Getting ready for -rc1Libravatar Junio C Hamano1-1/+34
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-27Merge branch 'ja/i18n-message-fixes'Libravatar Junio C Hamano3-3/+3
Messages fix. * ja/i18n-message-fixes: i18n: fix mistakes in translated strings
2018-08-27Merge branch 'ds/commit-graph-fsck'Libravatar Junio C Hamano1-6/+11
Finishing touches to doc. * ds/commit-graph-fsck: config: fix commit-graph related config docs
2018-08-27Merge branch 'js/range-diff'Libravatar Junio C Hamano1-1/+1
Finishing touched to help string. * js/range-diff: range-diff: update stale summary of --no-dual-color
2018-08-27Merge branch 'sg/test-rebase-editor-fix'Libravatar Junio C Hamano1-3/+3
Test fix. * sg/test-rebase-editor-fix: t/lib-rebase.sh: support explicit 'pick' commands in 'fake_editor.sh'
2018-08-27Merge branch 'jk/hashcmp-optim-for-2.19'Libravatar Junio C Hamano1-0/+10
Partially revert the support for multiple hash functions to regain hash comparison performance; we'd think of a way to do this better in the next cycle. * jk/hashcmp-optim-for-2.19: hashcmp: assert constant hash size
2018-08-27Merge branch 'ab/test-must-be-empty-for-master'Libravatar Junio C Hamano1-1/+1
Test fixes. * ab/test-must-be-empty-for-master: t6018-rev-list-glob: fix 'empty stdin' test
2018-08-27Merge branch 'sg/t3420-autostash-fix'Libravatar Junio C Hamano1-4/+4
Test fixes. * sg/t3420-autostash-fix: t3420-rebase-autostash: don't try to grep non-existing files
2018-08-27Merge branch 'sg/t3903-missing-fix'Libravatar Junio C Hamano1-1/+1
Test fixes. * sg/t3903-missing-fix: t3903-stash: don't try to grep non-existing file
2018-08-27Merge branch 'sg/t7501-thinkofix'Libravatar Junio C Hamano1-1/+1
Test fixes. * sg/t7501-thinkofix: t7501-commit: drop silly command substitution
2018-08-27Merge branch 'sg/t0020-conversion-fix'Libravatar Junio C Hamano1-1/+1
Test fixes. * sg/t0020-conversion-fix: t0020-crlf: check the right file
2018-08-27Merge branch 'sg/t4051-fix'Libravatar Junio C Hamano1-1/+1
Test fixes. * sg/t4051-fix: t4051-diff-function-context: read the right file
2018-08-27Merge branch 'js/larger-timestamps'Libravatar Junio C Hamano1-1/+1
Portability fix. * js/larger-timestamps: commit: use timestamp_t for author_date_slab
2018-08-27Merge branch 'jk/use-compat-util-in-test-tool'Libravatar Junio C Hamano1-0/+2
Dev tool update. * jk/use-compat-util-in-test-tool: test-tool.h: include git-compat-util.h
2018-08-27Merge branch 'sg/test-must-be-empty'Libravatar Junio C Hamano77-344/+231
Test fixes. * sg/test-must-be-empty: tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>' tests: use 'test_must_be_empty' instead of 'test_cmp /dev/null <out>' tests: use 'test_must_be_empty' instead of 'test ! -s' tests: use 'test_must_be_empty' instead of '! test -s'
2018-08-27Merge branch 'rs/opt-updates'Libravatar Junio C Hamano5-6/+6
"git cmd -h" updates. * rs/opt-updates: parseopt: group literal string alternatives in argument help remote: improve argument help for add --mirror checkout-index: improve argument help for --stage
2018-08-27Merge branch 'nd/complete-config-vars'Libravatar Junio C Hamano4-14/+14
"git help --config" (which is used in command line completion) missed the configuration variables not described in the main config.txt file but are described in another file that is included by it, which has been corrected. * nd/complete-config-vars: generate-cmdlist.sh: collect config from all config.txt files
2018-08-27Merge branch 'ab/unconditional-free-and-null'Libravatar Junio C Hamano4-12/+4
Code clean-up. * ab/unconditional-free-and-null: refactor various if (x) FREE_AND_NULL(x) to just FREE_AND_NULL(x)
2018-08-27Merge branch 'ep/worktree-quiet-option'Libravatar Junio C Hamano3-3/+22
"git worktree" command learned "--quiet" option to make it less verbose. * ep/worktree-quiet-option: worktree: add --quiet option
2018-08-27Merge branch 'sm/branch-sort-config'Libravatar Junio C Hamano4-3/+64
"git branch --list" learned to take the default sort order from the 'branch.sort' configuration variable, just like "git tag --list" pays attention to 'tag.sort'. * sm/branch-sort-config: branch: support configuring --sort via .gitconfig
2018-08-27Merge branch 'nd/config-core-checkstat-doc'Libravatar Junio C Hamano1-4/+14
The meaning of the possible values the "core.checkStat" configuration variable can take were not adequately documented, which has been fixed. * nd/config-core-checkstat-doc: config.txt: clarify core.checkStat
2018-08-27range-diff: update stale summary of --no-dual-colorLibravatar Kyle Meyer1-1/+1
275267937b (range-diff: make dual-color the default mode, 2018-08-13) replaced --dual-color with --no-dual-color but left the option's summary untouched. Rewrite the summary to describe --no-dual-color rather than dual-color. Helped-by: Jonathan Nieder <jrnieder@gmail.com> Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Kyle Meyer <kyle@kyleam.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-23i18n: fix mistakes in translated stringsLibravatar Jean-Noël Avila3-3/+3
Fix typos and convert a question which does not expect to be replied to a simple advice. Signed-off-by: Jean-Noël Avila <jn.avila@free.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-23config: fix commit-graph related config docsLibravatar Derrick Stolee1-6/+11
The core.commitGraph config setting was accidentally removed from the config documentation. In that same patch, the config setting that writes a commit-graph during garbage collection was incorrectly written to the doc as "gc.commitGraph" instead of "gc.writeCommitGraph". Reported-by: Szeder Gábor <szeder.dev@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-23t/lib-rebase.sh: support explicit 'pick' commands in 'fake_editor.sh'Libravatar SZEDER Gábor1-3/+3
The verbose output of the test 'reword without issues functions as intended' in 't3423-rebase-reword.sh', added in a9279c6785 (sequencer: do not squash 'reword' commits when we hit conflicts, 2018-06-19), contains the following error output: sed: -e expression #1, char 2: extra characters after command This error comes from within the 'fake-editor.sh' script created by 'lib-rebase.sh's set_fake_editor() function, and the root cause is the FAKE_LINES="pick 1 reword 2" variable in the test in question, in particular the "pick" word. 'fake-editor.sh' assumes 'pick' to be the default rebase command and doesn't support an explicit 'pick' command in FAKE_LINES. As a result, 'pick' will be used instead of a line number when assembling the following 'sed' script: sed -n picks/^pick/pick/p which triggers the aforementioned error. Luckily, this didn't affect the test's correctness: the erroring 'sed' command doesn't write anything to the todo script, and processing the rest of FAKE_LINES generates the desired todo script, as if that 'pick' command were not there at all. The minimal fix would be to remove the 'pick' word from FAKE_LINES, but that would leave us susceptible to similar issues in the future. Instead, teach the fake-editor script to recognize an explicit 'pick' command, which is still a fairly trivial change. In the future we might want to consider reinforcing this fake editor script with an &&-chain and stricter parsing of the FAKE_LINES variable (e.g. to error out when encountering unknown rebase commands or commands and line numbers in the wrong order). Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-23hashcmp: assert constant hash sizeLibravatar Jeff King1-0/+10
Prior to 509f6f62a4 (cache: update object ID functions for the_hash_algo, 2018-07-16), hashcmp() called memcmp() with a constant size of 20 bytes. Some compilers were able to turn that into a few quad-word comparisons, which is faster than actually calling memcmp(). In 509f6f62a4, we started using the_hash_algo->rawsz instead. Even though this will always be 20, the compiler doesn't know that while inlining hashcmp() and ends up just generating a call to memcmp(). Eventually we'll have to deal with multiple hash sizes, but for the upcoming v2.19, we can restore some of the original performance by asserting on the size. That gives the compiler enough information to know that the memcmp will always be called with a length of 20, and it performs the same optimization. Here are numbers for p0001.2 run against linux.git on a few versions. This is using -O2 with gcc 8.2.0. Test v2.18.0 v2.19.0-rc0 HEAD ------------------------------------------------------------------------------ 0001.2: 34.24(33.81+0.43) 34.83(34.42+0.40) +1.7% 33.90(33.47+0.42) -1.0% You can see that v2.19 is a little slower than v2.18. This commit ended up slightly faster than v2.18, but there's a fair bit of run-to-run noise (the generated code in the two cases is basically the same). This patch does seem to be consistently 1-2% faster than v2.19. I tried changing hashcpy(), which was also touched by 509f6f62a4, in the same way, but couldn't measure any speedup. Which makes sense, at least for this workload. A traversal of the whole commit graph requires looking up every entry of every tree via lookup_object(). That's many multiples of the numbers of objects in the repository (most of the lookups just return "yes, we already saw that object"). [jn: verified using "make object.s" that the memcmp call goes away.] Reported-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: Jeff King <peff@peff.net Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22t3420-rebase-autostash: don't try to grep non-existing filesLibravatar SZEDER Gábor1-4/+4
Several tests in 't3420-rebase-autostash.sh' start various rebase processes that are expected to fail because of merge conflicts. These tests then run '! grep' to ensure that the autostash feature did its job, and the dirty contents of a file is gone. However, due to the test repo's history and the choice of upstream branch that file shouldn't exist in the conflicted state at all. Consequently, this 'grep' doesn't fail as expected, because it can't find the dirty content, but it fails because it can't open the file. Tighten this check by using 'test_path_is_missing' instead, thereby avoiding unexpected errors from 'grep' as well. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22t3903-stash: don't try to grep non-existing fileLibravatar SZEDER Gábor1-1/+1
The test 'store updates stash ref and reflog' in 't3903-stash.sh' creates a stash from a new file, runs 'git reset --hard' to throw away any modifications to the work tree, and then runs '! grep' to ensure that the staged contents are gone. Since the file didn't exist before, it shouldn't exist after 'git reset' either. Consequently, this 'grep' doesn't fail as expected, because it can't find the staged content, but it fails because it can't open the file. Tighten this check by using 'test_path_is_missing' instead, thereby avoiding an unexpected error from 'grep' as well. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22Merge branch 'nd/pack-deltify-regression-fix'Libravatar Junio C Hamano5-15/+58
In a recent update in 2.18 era, "git pack-objects" started producing a larger than necessary packfiles by missing opportunities to use large deltas. * nd/pack-deltify-regression-fix: pack-objects: fix performance issues on packing large deltas
2018-08-22t6018-rev-list-glob: fix 'empty stdin' testLibravatar SZEDER Gábor1-1/+1
Prior to d3c6751b18 (tests: make use of the test_must_be_empty function, 2018-07-27), in the test 'rev-list should succeed with empty output on empty stdin' in 't6018-rev-list-glob' the empty 'expect' file served dual purpose: besides specifying the expected output, as usual, it also served as empty input for 'git rev-list --stdin'. Then d3c6751b18 came along, and, as part of the conversion to 'test_must_be_empty', removed this empty 'expect' file, not realizing its secondary purpose. Redirecting stdin from the now non-existing file failed the test, but since this test expects failure in the first place, this issue went unnoticed. Redirect 'git rev-list's stdin explicitly from /dev/null to provide empty input. (Strictly speaking we don't need this redirection, because the test script's stdin is already redirected from /dev/null anyway, but I think it's better to be explicit about it.) Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22t4051-diff-function-context: read the right fileLibravatar SZEDER Gábor1-1/+1
The test ' context does not include preceding empty lines' in the block of tests 'change with long common tail and no context' in 't4051-diff-function-context.sh' tries to read the file 'long_common_tail.diff.diff', but that file doesn't exist as its name contains one more '.diff' suffixes than necessary. Despite this error the test still succeeded without checking what it's supposed to, because this erroneous read is done on the line: test "$(first_context_line <long_common_tail.diff.diff)" != " " which means that: - the command substitution hides the error, so it won't fail the test, and - the result of the command substitution is the empty string, which is, of course, not equal to a single space character, so the condition is fulfilled, and the test succeeds. As a minimal fix, fix the name of the file to be read. In the future we might want to reorganize this test script (1) to use 'test_cmp' instead of 'test's and command substitutions to catch failing commands and to provide helpful error messages, and (2) to specify what the expected result actually _is_ instead of what it isn't. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22t0020-crlf: check the right fileLibravatar SZEDER Gábor1-1/+1
In the test 'checkout with autocrlf=input' in 't0020-crlf.sh', one of the 'has_cr' checks looks at the non-existing file 'two' instead of 'dir/two'. The test still succeeds, without actually checking what it was supposed to, because this check is expected to fail anyway. As a minimal fix, fix the name of the file to be checked. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-22t7501-commit: drop silly command substitutionLibravatar SZEDER Gábor1-1/+1
The test '--dry-run with conflicts fixed from a merge' in 't7501-commit.sh', added in 8dc874b2ee (wt-status.c: set commitable bit if there is a meaningful merge., 2016-02-15), runs the following unnecessary and downright bogus command substitution: ! $(git merge --no-commit commit-1) && I.e. after 'git merge ...' is executed and expectedly fails, the test attempts to execute its output: Merging: 80f2ea2 commit 2 virtual commit-1 found 1 common ancestor: e60d113 Initial commit Auto-merging test-file CONFLICT (content): Merge conflict in test-file Automatic merge failed; fix conflicts and then commit the result. as a command, which most likely fails, because there is no such command as "Merging:". Then '!' negates the failed exit status, the test continues, and eventually succeeds. Remove this command substitution and use 'test_must_fail' to ensure that 'git merge' fails. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21commit: use timestamp_t for author_date_slabLibravatar Derrick Stolee1-1/+1
The author_date_slab is used to store the author date of a commit when walking with the --author-date flag in rev-list or log. This was added as an 'unsigned long' in 81c6b38b "log: --author-date-order" Since 'unsigned long' is ambiguous in its bit-ness across platforms (64-bit in Linux, 32-bit in Windows, for example), most references to the author dates in commit.c were converted to timestamp_t in dddbad72 "timestamp_t: a new data type for timestamps" However, the slab definition was missed, leading to a mismatch in the data types in Windows. This would not reveal itself as a bug unless someone authors a commit after February 2106, but commits can store anything as their author date. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21test-tool.h: include git-compat-util.hLibravatar Jeff King1-0/+2
The test-tool programs include "test-tool.h" as their first include, which breaks our CodingGuideline of "the first include must be git-compat-util.h or an equivalent". Rather than change them all, let's instead make test-tool.h one of those equivalents, just like we do for builtin.h (which many of the actual git builtins include first). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>'Libravatar SZEDER Gábor46-226/+114
Using 'test_must_be_empty' is shorter and more idiomatic than >empty && test_cmp empty out as it saves the creation of an empty file. Furthermore, sometimes the expected empty file doesn't have such a descriptive name like 'empty', and its creation is far away from the place where it's finally used for comparison (e.g. in 't7600-merge.sh', where two expected empty files are created in the 'setup' test, but are used only about 500 lines later). These cases were found by instrumenting 'test_cmp' to error out the test script when it's used to compare empty files, and then converted manually. Note that even after this patch there still remain a lot of cases where we use 'test_cmp' to check empty files: - Sometimes the expected output is not hard-coded in the test, but 'test_cmp' is used to ensure that two similar git commands produce the same output, and that output happens to be empty, e.g. the test 'submodule update --merge - ignores --merge for new submodules' in 't7406-submodule-update.sh'. - Repetitive common tasks, including preparing the expected results and running 'test_cmp', are often extracted into a helper function, and some of this helper's callsites expect no output. - For the same reason as above, the whole 'test_expect_success' block is within a helper function, e.g. in 't3070-wildmatch.sh'. - Or 'test_cmp' is invoked in a loop, e.g. the test 'cvs update (-p)' in 't9400-git-cvsserver-server.sh'. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21tests: use 'test_must_be_empty' instead of 'test_cmp /dev/null <out>'Libravatar SZEDER Gábor10-16/+16
Using 'test_must_be_empty' is more idiomatic than 'test_cmp /dev/null out', and its message on error is perhaps a bit more to the point. This patch was basically created by running: sed -i -e 's%test_cmp /dev/null%test_must_be_empty%' t[0-9]*.sh with the exception of the change in 'should not fail in an empty repo' in 't7401-submodule-summary.sh', where it was 'test_cmp output /dev/null'. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21tests: use 'test_must_be_empty' instead of 'test ! -s'Libravatar SZEDER Gábor4-4/+4
Using 'test_must_be_empty' is preferable to 'test ! -s', because it gives a helpful error message if the given file is unexpectedly no empty, while the latter remains completely silent. Furthermore, it also catches cases when the given file unexpectedly does not exist at all. This patch was created by: sed -i -e 's/test ! -s/test_must_be_empty/' t[0-9]*.sh Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21tests: use 'test_must_be_empty' instead of '! test -s'Libravatar SZEDER Gábor25-99/+98
Using 'test_must_be_empty' is preferable to '! test -s', because it gives a helpful error message if the given file is unexpectedly not empty, while the latter remains completely silent. Furthermore, it also catches cases when the given file unexpectedly does not exist at all. This patch was basically created by: sed -i -e 's/! test -s/test_must_be_empty/' t[0-9]*.sh with the following notable exceptions: - The '! test -s' check in '.gitmodules ignore=dirty suppresses submodules with untracked content' in 't7508-status.sh' is left as-is, because it's bogus and, therefore, it's subject of a dedicated patch. - The '! test -s' checks in 't9131-git-svn-empty-symlink.sh' and 't9135-git-svn-moved-branch-empty-file.sh' are immediately preceeded by a 'test -f' to ensure that the files exist in the first place. 'test_must_be_empty' ensures that as well, so those 'test -f' commands are removed as well. Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-21parseopt: group literal string alternatives in argument helpLibravatar René Scharfe3-4/+4
This formally clarifies that the "--option=" part is the same for all alternatives. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>