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2018-11-17bundle: dup() output descriptor closer to point-of-useLibravatar Jeff King2-21/+24
When writing a bundle to a file, the bundle code actually creates "your.bundle.lock" using our lockfile interface. We feed that output descriptor to a child git-pack-objects via run-command, which has the quirk that it closes the output descriptor in the parent. To avoid confusing the lockfile code (which still thinks the descriptor is valid), we dup() it, and operate on the duplicate. However, this has a confusing side effect: after the dup() but before we call pack-objects, we have _two_ descriptors open to the lockfile. If we call die() during that time, the lockfile code will try to clean up the partially-written file. It knows to close() the file before unlinking, since on some platforms (i.e., Windows) the open file would block the deletion. But it doesn't know about the duplicate descriptor. On Windows, triggering an error at the right part of the code will result in the cleanup failing and the lockfile being left in the filesystem. We can solve this by moving the dup() much closer to start_command(), shrinking the window in which we have the second descriptor open. It's easy to place this in such a way that no die() is possible. We could still die due to a signal in the exact wrong moment, but we already tolerate races there (e.g., a signal could come before we manage to put the file on the cleanup list in the first place). As a bonus, this shields create_bundle() itself from the duplicate-fd trick, and we can simplify its error handling (note that the lock rollback now happens unconditionally, but that's OK; it's a noop if we didn't open the lock in the first place). The included test uses an empty bundle to cause a failure at the right spot in the code, because that's easy to trigger (the other likely errors are write() problems like ENOSPC). Note that it would already pass on non-Windows systems (because they are happy to unlink an already-open file). Based-on-a-patch-by: Gaël Lhez <gael.lhez@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Tested-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Git 2.19.1Libravatar Junio C Hamano3-2/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.18.1Libravatar Junio C Hamano10-0/+148
* maint-2.18: Git 2.18.1 Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Git 2.18.1Libravatar Junio C Hamano3-2/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.17.2Libravatar Junio C Hamano9-0/+142
* maint-2.17: Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Git 2.17.2Libravatar Junio C Hamano3-2/+14
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27fsck: detect submodule paths starting with dashLibravatar Jeff King2-0/+15
As with urls, submodule paths with dashes are ignored by git, but may end up confusing older versions. Detecting them via fsck lets us prevent modern versions of git from being a vector to spread broken .gitmodules to older versions. Compared to blocking leading-dash urls, though, this detection may be less of a good idea: 1. While such paths provide confusing and broken results, they don't seem to actually work as option injections against anything except "cd". In particular, the submodule code seems to canonicalize to an absolute path before running "git clone" (so it passes /your/clone/-sub). 2. It's more likely that we may one day make such names actually work correctly. Even after we revert this fsck check, it will continue to be a hassle until hosting servers are all updated. On the other hand, it's not entirely clear that the behavior in older versions is safe. And if we do want to eventually allow this, we may end up doing so with a special syntax anyway (e.g., writing "./-sub" in the .gitmodules file, and teaching the submodule code to canonicalize it when comparing). So on balance, this is probably a good protection. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27fsck: detect submodule urls starting with dashLibravatar Jeff King2-0/+22
Urls with leading dashes can cause mischief on older versions of Git. We should detect them so that they can be rejected by receive.fsckObjects, preventing modern versions of git from being a vector by which attacks can spread. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.16.5Libravatar Junio C Hamano7-0/+93
* maint-2.16: Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Git 2.16.5Libravatar Junio C Hamano3-2/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.15.3Libravatar Junio C Hamano6-0/+87
* maint-2.15: Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Git 2.15.3Libravatar Junio C Hamano3-2/+8
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with Git 2.14.4Libravatar Junio C Hamano5-0/+81
* maint-2.14: Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Git 2.14.5Libravatar Junio C Hamano3-2/+18
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27submodule-config: ban submodule paths that start with a dashLibravatar Jeff King2-0/+22
We recently banned submodule urls that look like command-line options. This is the matching change to ban leading-dash paths. As with the urls, this should not break any use cases that currently work. Even with our "--" separator passed to git-clone, git-submodule.sh gets confused. Without the code portion of this patch, the clone of "-sub" added in t7417 would yield results like: /path/to/git-submodule: 410: cd: Illegal option -s /path/to/git-submodule: 417: cd: Illegal option -s /path/to/git-submodule: 410: cd: Illegal option -s /path/to/git-submodule: 417: cd: Illegal option -s Fetched in submodule path '-sub', but it did not contain b56243f8f4eb91b2f1f8109452e659f14dd3fbe4. Direct fetching of that commit failed. Moreover, naively adding such a submodule doesn't work: $ git submodule add $url -sub The following path is ignored by one of your .gitignore files: -sub even though there is no such ignore pattern (the test script hacks around this with a well-placed "git mv"). Unlike leading-dash urls, though, it's possible that such a path _could_ be useful if we eventually made it work. So this commit should be seen not as recommending a particular policy, but rather temporarily closing off a broken and possibly dangerous code-path. We may revisit this decision later. There are two minor differences to the tests in t7416 (that covered urls): 1. We don't have a "./-sub" escape hatch to make this work, since the submodule code expects to be able to match canonical index names to the path field (so you are free to add submodule config with that path, but we would never actually use it, since an index entry would never start with "./"). 2. After this patch, cloning actually succeeds. Since we ignore the submodule.*.path value, we fail to find a config stanza for our submodule at all, and simply treat it as inactive. We still check for the "ignoring" message. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27submodule-config: ban submodule urls that start with dashLibravatar Jeff King2-0/+42
The previous commit taught the submodule code to invoke our "git clone $url $path" with a "--" separator so that we aren't confused by urls or paths that start with dashes. However, that's just one code path. It's not clear if there are others, and it would be an easy mistake to add one in the future. Moreover, even with the fix in the previous commit, it's quite hard to actually do anything useful with such an entry. Any url starting with a dash must fall into one of three categories: - it's meant as a file url, like "-path". But then any clone is not going to have the matching path, since it's by definition relative inside the newly created clone. If you spell it as "./-path", the submodule code sees the "/" and translates this to an absolute path, so it at least works (assuming the receiver has the same filesystem layout as you). But that trick does not apply for a bare "-path". - it's meant as an ssh url, like "-host:path". But this already doesn't work, as we explicitly disallow ssh hostnames that begin with a dash (to avoid option injection against ssh). - it's a remote-helper scheme, like "-scheme::data". This _could_ work if the receiver bends over backwards and creates a funny-named helper like "git-remote--scheme". But normally there would not be any helper that matches. Since such a url does not work today and is not likely to do anything useful in the future, let's simply disallow them entirely. That protects the existing "git clone" path (in a belt-and-suspenders way), along with any others that might exist. Our tests cover two cases: 1. A file url with "./" continues to work, showing that there's an escape hatch for people with truly silly repo names. 2. A url starting with "-" is rejected. Note that we expect case (2) to fail, but it would have done so even without this commit, for the reasons given above. So instead of just expecting failure, let's also check for the magic word "ignoring" on stderr. That lets us know that we failed for the right reason. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27submodule--helper: use "--" to signal end of clone optionsLibravatar Jeff King1-0/+1
When we clone a submodule, we call "git clone $url $path". But there's nothing to say that those components can't begin with a dash themselves, confusing git-clone into thinking they're options. Let's pass "--" to make it clear what we expect. There's no test here, because it's actually quite hard to make these names work, even with "git clone" parsing them correctly. And we're going to restrict these cases even further in future commits. So we'll leave off testing until then; this is just the minimal fix to prevent us from doing something stupid with a badly formed entry. Reported-by: joernchen <joernchen@phenoelit.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-10Git 2.19Libravatar Junio C Hamano2-9/+1
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-10Merge tag 'l10n-2.19.0-rnd2' of git://github.com/git-l10n/git-poLibravatar Junio C Hamano9-25222/+41448
l10n for Git 2.19.0 round 2 * tag 'l10n-2.19.0-rnd2' of git://github.com/git-l10n/git-po: l10n: zh_CN: for git v2.19.0 l10n round 1 to 2 l10n: bg.po: Updated Bulgarian translation (3958t) l10n: vi.po(3958t): updated Vietnamese translation v2.19.0 round 2 l10n: es.po v2.19.0 round 2 l10n: fr.po v2.19.0 rnd 2 l10n: fr.po v2.19.0 rnd 1 l10n: fr: fix a message seen in git bisect l10n: sv.po: Update Swedish translation (3958t0f0u) l10n: git.pot: v2.19.0 round 2 (3 new, 5 removed) l10n: ru.po: update Russian translation l10n: git.pot: v2.19.0 round 1 (382 new, 30 removed) l10n: de.po: translate 108 new messages l10n: zh_CN: review for git 2.18.0 l10n: sv.po: Update Swedish translation(3608t0f0u)
2018-09-10Merge branch 'jn/submodule-core-worktree-revert'Libravatar Junio C Hamano6-55/+2
* jn/submodule-core-worktree-revert: Revert "Merge branch 'sb/submodule-core-worktree'"
2018-09-10Merge branch 'mk/http-backend-content-length'Libravatar Junio C Hamano2-1/+12
The earlier attempt barfed when given a CONTENT_LENGTH that is set to an empty string. RFC 3875 is fairly clear that in this case we should not read any message body, but we've been reading through to the EOF in previous versions (which did not even pay attention to the environment variable), so keep that behaviour for now in this late update. * mk/http-backend-content-length: http-backend: allow empty CONTENT_LENGTH
2018-09-09l10n: zh_CN: for git v2.19.0 l10n round 1 to 2Libravatar Jiang Xin1-2821/+4584
Translate 382 new messages (3958t0f0u) for git 2.19.0. Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
2018-09-09Merge branch 'master' of git://github.com/alshopov/git-poLibravatar Jiang Xin1-2750/+4607
* 'master' of git://github.com/alshopov/git-po: l10n: bg.po: Updated Bulgarian translation (3958t)
2018-09-09l10n: bg.po: Updated Bulgarian translation (3958t)Libravatar Alexander Shopov1-2750/+4607
Signed-off-by: Alexander Shopov <ash@kambanaria.org>
2018-09-07Revert "Merge branch 'sb/submodule-core-worktree'"Libravatar Jonathan Nieder6-55/+2
This reverts commit 7e25437d35a70791b345872af202eabfb3e1a8bc, reversing changes made to 00624d608cc69bd62801c93e74d1ea7a7ddd6598. v2.19.0-rc0~165^2~1 (submodule: ensure core.worktree is set after update, 2018-06-18) assumes an "absorbed" submodule layout, where the submodule's Git directory is in the superproject's .git/modules/ directory and .git in the submodule worktree is a .git file pointing there. In particular, it uses $GIT_DIR/modules/$name to find the submodule to find out whether it already has core.worktree set, and it uses connect_work_tree_and_git_dir if not, resulting in fatal: could not open sub/.git for writing The context behind that patch: v2.19.0-rc0~165^2~2 (submodule: unset core.worktree if no working tree is present, 2018-06-12) unsets core.worktree when running commands like "git checkout --recurse-submodules" to switch to a branch without the submodule. If a user then uses "git checkout --no-recurse-submodules" to switch back to a branch with the submodule and runs "git submodule update", this patch is needed to ensure that commands using the submodule directly are aware of the path to the worktree. It is late in the release cycle, so revert the whole 3-patch series. We can try again later for 2.20. Reported-by: Allan Sandfeld Jensen <allan.jensen@qt.io> Helped-by: Stefan Beller <sbeller@google.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-07http-backend: allow empty CONTENT_LENGTHLibravatar Max Kirillov2-1/+12
According to RFC3875, empty environment variable is equivalent to unset, and for CONTENT_LENGTH it should mean zero body to read. However, unset CONTENT_LENGTH is also used for chunked encoding to indicate reading until EOF. At least, the test "large fetch-pack requests can be split across POSTs" from t5551 starts faliing, if unset or empty CONTENT_LENGTH is treated as zero length body. So keep the existing behavior as much as possible. Add a test for the case. Reported-By: Jelmer Vernooij <jelmer@jelmer.uk> Signed-off-by: Max Kirillov <max@max630.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-07l10n: vi.po(3958t): updated Vietnamese translation v2.19.0 round 2Libravatar Tran Ngoc Quan1-2800/+4576
Signed-off-by: Tran Ngoc Quan <vnwildman@gmail.com>
2018-09-06l10n: es.po v2.19.0 round 2Libravatar Christopher Diaz Riveros1-2753/+4571
Signed-off-by: Christopher Diaz Riveros <chrisadr@gentoo.org>
2018-09-06Merge branch 'fr_2.19.0_rnd1' of git://github.com/jnavila/gitLibravatar Jiang Xin1-2786/+4588
* 'fr_2.19.0_rnd1' of git://github.com/jnavila/git: l10n: fr.po v2.19.0 rnd 2 l10n: fr.po v2.19.0 rnd 1 l10n: fr: fix a message seen in git bisect
2018-09-05l10n: fr.po v2.19.0 rnd 2Libravatar Jean-Noël Avila1-283/+328
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
2018-09-05l10n: fr.po v2.19.0 rnd 1Libravatar Jean-Noël Avila1-2718/+4475
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
2018-09-05l10n: fr: fix a message seen in git bisectLibravatar Raphaël Hertzog1-2/+2
"cette" can be only be used before a word (like in "cette bouteille" for "this bottle"), but here "this" refers to the current step and we have to use "ceci" in French. Signed-off-by: Raphaël Hertzog <hertzog@debian.org>
2018-09-04l10n: sv.po: Update Swedish translation (3958t0f0u)Libravatar Peter Krefting1-2800/+4569
Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
2018-09-04Git 2.19-rc2Libravatar Junio C Hamano1-0/+23
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-04Merge branch 'es/chain-lint-more'Libravatar Junio C Hamano5-4/+18
The test linter code has learned that the end of here-doc mark "EOF" can be quoted in a double-quote pair, not just in a single-quote pair. * es/chain-lint-more: chainlint: match "quoted" here-doc tags
2018-09-04Merge branch 'ab/portable-more'Libravatar Junio C Hamano10-44/+53
Portability fix. * ab/portable-more: tests: fix non-portable iconv invocation tests: fix non-portable "${var:-"str"}" construct tests: fix and add lint for non-portable grep --file tests: fix version-specific portability issue in Perl JSON tests: use shorter labels in chainlint.sed for AIX sed tests: fix comment syntax in chainlint.sed for AIX sed tests: fix and add lint for non-portable seq tests: fix and add lint for non-portable head -c N
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()
2018-09-04l10n: git.pot: v2.19.0 round 2 (3 new, 5 removed)Libravatar Jiang Xin1-255/+247
Generate po/git.pot from v2.19.0-rc1 for git v2.19.0 l10n round 2. Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
2018-09-04Merge branch 'master' of git://github.com/git-l10n/git-poLibravatar Jiang Xin5-8458/+13907
* 'master' of git://github.com/git-l10n/git-po: l10n: ru.po: update Russian translation l10n: git.pot: v2.19.0 round 1 (382 new, 30 removed) l10n: de.po: translate 108 new messages l10n: zh_CN: review for git 2.18.0 l10n: sv.po: Update Swedish translation(3608t0f0u)
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>
2018-08-29chainlint: match "quoted" here-doc tagsLibravatar Eric Sunshine5-4/+18
A here-doc tag can be quoted ('EOF'/"EOF") or escaped (\EOF) to suppress interpolation within the body. chainlint recognizes single-quoted and escaped tags, but does not know about double-quoted tags. For completeness, teach it to recognize double-quoted tags, as well. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29tests: fix non-portable iconv invocationLibravatar Ævar Arnfjörð Bjarmason1-1/+5
The iconv that comes with a FreeBSD 11.2-RELEASE-p2 box I have access to doesn't support the SHIFT-JIS encoding. Guard a test added in e92d62253 ("convert: add round trip check based on 'core.checkRoundtripEncoding'", 2018-04-15) first released with Git v2.18.0 with a prerequisite that checks for its availability. The iconv command is in POSIX, and we have numerous tests unconditionally relying on its ability to convert ASCII, UTF-8 and UTF-16, but unconditionally relying on the presence of more obscure encodings isn't portable. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-29tests: fix non-portable "${var:-"str"}" constructLibravatar Ævar Arnfjörð Bjarmason1-1/+1
On both AIX 7200-00-01-1543 and FreeBSD 11.2-RELEASE-p2 the "${var:-"str"}" syntax means something different than what it does under the bash or dash shells. Both will consider the start of the new unescaped quotes to be a new argument to test_expect_success, resulting in the following error: error: bug in the test script: 'git diff-tree initial # magic is (not' does not look like a prereq Fix this by removing the redundant quotes. There's no need for them, and the resulting code works under all the aforementioned shells. This fixes a regression in c2f1d3989 ("t4013: test new output from diff --abbrev --raw", 2017-12-03) first released with Git v2.16.0. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>