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* pack-objects: convert recursion to iteration in break_delta_chain()jk/delta-chain-limitJeff King2017-01-271-30/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The break_delta_chain() function is recursive over the depth of a given delta chain, which can lead to possibly running out of stack space. Normally delta depth is quite small, but if there _is_ a pathological case, this is where we would find and fix it, so we should be more careful. We can do it without recursion at all, but there's a little bit of cleverness needed to do so. It's easiest to explain by covering the less-clever strategies first. The obvious thing to try is just keeping our own stack on the heap. Whenever we would recurse, push the new entry onto the stack and loop instead. But this gets tricky; when we see an ACTIVE entry, we need to care if we just pushed it (in which case it's a cycle) or if we just popped it (in which case we dealt with its bases, and no we need to clear the ACTIVE flag and compute its depth). You can hack around that in various ways, like keeping a "just pushed" flag, but the logic gets muddled. However, we can observe that we do all of our pushes first, and then all of our pops afterwards. In other words, we can do this in two passes. First dig down to the base, stopping when we see a cycle, and pushing each item onto our stack. Then pop the stack elements, clearing the ACTIVE flag and computing the depth for each. This works, and is reasonably elegant. However, why do we need the stack for the second pass? We can just walk the delta pointers again. There's one complication. Popping the stack went over our list in reverse, so we could compute the depth of each entry by incrementing the depth of its base, which we will have just computed. To go forward in the second pass, we have to compute the total depth on the way down, and then assign it as we go. This patch implements this final strategy, because it not only keeps the memory off the stack, but it eliminates it entirely. Credit for the cleverness in that approach goes to Michael Haggerty; bugs are mine. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* pack-objects: enforce --depth limit in reused deltasJeff King2017-01-271-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 898b14c (pack-objects: rework check_delta_limit usage, 2007-04-16), we check the delta depth limit only when figuring out whether we should make a new delta. We don't consider it at all when reusing deltas, which means that packing once with --depth=250, and then again with --depth=50, the second pack may still contain chains larger than 50. This is generally considered a feature, as the results of earlier high-depth repacks are carried forward, used for serving fetches, etc. However, since we started using cross-pack deltas in c9af708b1 (pack-objects: use mru list when iterating over packs, 2016-08-11), we are no longer bounded by the length of an existing delta chain in a single pack. Here's one particular pathological case: a sequence of N packs, each with 2 objects, the base of which is stored as a delta in a previous pack. If we chain all the deltas together, we have a cycle of length N. We break the cycle, but the tip delta is still at depth N-1. This is less unlikely than it might sound. See the included test for a reconstruction based on real-world actions. I ran into such a case in the wild, where a client was rapidly sending packs, and we had accumulated 10,000 before doing a server-side repack. The pack that "git repack" tried to generate had a very deep chain, which caused pack-objects to run out of stack space in the recursive write_one(). This patch bounds the length of delta chains in the output pack based on --depth, regardless of whether they are caused by cross-pack deltas or existed in the input packs. This fixes the problem, but does have two possible downsides: 1. High-depth aggressive repacks followed by "normal" repacks will throw away the high-depth chains. In the long run this is probably OK; investigation showed that high-depth repacks aren't actually beneficial, and we dropped the aggressive depth default to match the normal case in 07e7dbf0d (gc: default aggressive depth to 50, 2016-08-11). 2. If you really do want to store high-depth deltas on disk, they may be discarded and new delta computed when serving a fetch, unless you set pack.depth to match your high-depth size. The implementation uses the existing search for delta cycles. That lets us compute the depth of any node based on the depth of its base, because we know the base is DFS_DONE by the time we look at it (modulo any cycles in the graph, but we know there cannot be any because we break them as we see them). There is some subtlety worth mentioning, though. We record the depth of each object as we compute it. It might seem like we could save the per-object storage space by just keeping track of the depth of our traversal (i.e., have break_delta_chains() report how deep it went). But we may visit an object through multiple delta paths, and on subsequent paths we want to know its depth immediately, without having to walk back down to its final base (doing so would make our graph walk quadratic rather than linear). Likewise, one could try to record the depth not from the base, but from our starting point (i.e., start recursion_depth at 0, and pass "recursion_depth + 1" to each invocation of break_delta_chains()). And then when recursion_depth gets too big, we know that we must cut the delta chain. But that technique is wrong if we do not visit the nodes in topological order. In a chain A->B->C, it if we visit "C", then "B", then "A", we will never recurse deeper than 1 link (because we see at each node that we have already visited it). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'jt/fetch-no-redundant-tag-fetch-map' into maintJunio C Hamano2017-01-171-3/+0
|\ | | | | | | | | | | | | | | Code cleanup to avoid using redundant refspecs while fetching with the --tags option. * jt/fetch-no-redundant-tag-fetch-map: fetch: do not redundantly calculate tag refmap
| * fetch: do not redundantly calculate tag refmapjt/fetch-no-redundant-tag-fetch-mapJonathan Tan2016-11-111-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | builtin/fetch.c redundantly calculates refmaps for tags twice. Remove the first calculation. This is only a code simplification and slight performance improvement - the result is unchanged, as the redundant refmaps are subsequently removed by the invocation to "ref_remove_duplicates" anyway. This was introduced in commit c5a84e9 ("fetch --tags: fetch tags *in addition to* other stuff", 2013-10-29) when modifying the effect of the --tags parameter to "git fetch". The refmap-for-tag calculation was copied instead of moved. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jc/push-default-explicit' into maintJunio C Hamano2017-01-171-2/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | A lazy "git push" without refspec did not internally use a fully specified refspec to perform 'current', 'simple', or 'upstream' push, causing unnecessary "ambiguous ref" errors. * jc/push-default-explicit: push: test pushing ambiguously named branches push: do not use potentially ambiguous default refspec
| * | push: do not use potentially ambiguous default refspecJunio C Hamano2016-10-281-2/+5
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the user does the lazy "git push" with no parameters with push.default set to either "upstream", "simple" or "current", we internally generated a refspec that has the current branch name on the source side and used it to push. However, the branch name (say "test") may be an ambiguous refname in the context of the source repository---there may be a tag with the same name, for example. This would trigger an unnecessary error without any fault on the end-user's side. Be explicit and give a full refname as the source side to avoid the ambiguity. The destination side when pushing with the "current" sent only the name of the branch and forcing the receiving end to guess, which is the same issue. Be explicit there as well. Reported-by: Kannan Goundan <kannan@cakoose.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'jk/index-pack-wo-repo-from-stdin' into maintJunio C Hamano2017-01-171-4/+8
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git index-pack --stdin" needs an access to an existing repository, but "git index-pack file.pack" to generate an .idx file that corresponds to a packfile does not. * jk/index-pack-wo-repo-from-stdin: index-pack: skip collision check when not in repository t: use nongit() function where applicable index-pack: complain when --stdin is used outside of a repo t5000: extract nongit function to test-lib-functions.sh
| * | index-pack: skip collision check when not in repositoryjk/index-pack-wo-repo-from-stdinJeff King2016-12-161-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | You can run "git index-pack path/to/foo.pack" outside of a repository to generate an index file, or just to verify the contents. There's no point in doing a collision check, since we obviously do not have any objects to collide with. The current code will blindly look in .git/objects based on the result of setup_git_env(). That effectively gives us the right answer (since we won't find any objects), but it's a waste of time, and it conflicts with our desire to eventually get rid of the "fallback to .git" behavior of setup_git_env(). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | index-pack: complain when --stdin is used outside of a repoJeff King2016-12-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The index-pack builtin is marked as RUN_SETUP_GENTLY, because it's perfectly fine to index a pack in the filesystem outside of any repository. However, --stdin mode will write the result to the object database, which does not make sense outside of a repository. Doing so creates a bogus ".git" directory with nothing in it except the newly-created pack and its index. Instead, let's flag this as an error and abort. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'sb/sequencer-abort-safety' into maintJunio C Hamano2017-01-171-2/+2
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike "git am --abort", "git cherry-pick --abort" moved HEAD back to where cherry-pick started while picking multiple changes, when the cherry-pick stopped to ask for help from the user, and the user did "git reset --hard" to a different commit in order to re-attempt the operation. * sb/sequencer-abort-safety: Revert "sequencer: remove useless get_dir() function" sequencer: remove useless get_dir() function sequencer: make sequencer abort safer t3510: test that cherry-pick --abort does not unsafely change HEAD am: change safe_to_abort()'s not rewinding error into a warning am: fix filename in safe_to_abort() error message
| * | | am: change safe_to_abort()'s not rewinding error into a warningStephan Beyer2016-12-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error message tells the user that something went terribly wrong and the --abort could not be performed. But the --abort is performed, only without rewinding. By simply changing the error into a warning, we indicate the user that she must not try something like "git am --abort --force", instead she just has to check the HEAD. Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | am: fix filename in safe_to_abort() error messageStephan Beyer2016-12-081-1/+1
| |/ / | | | | | | | | | | | | Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'jc/pull-rebase-ff' into maintJunio C Hamano2017-01-171-4/+18
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git pull --rebase", when there is no new commits on our side since we forked from the upstream, should be able to fast-forward without invoking "git rebase", but it didn't. * jc/pull-rebase-ff: pull: fast-forward "pull --rebase=true"
| * | | pull: fast-forward "pull --rebase=true"jc/pull-rebase-ffJunio C Hamano2016-11-291-4/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git pull --rebase" always runs "git rebase" after fetching the commit to serve as the new base, even when the new base is a descendant of the current HEAD, i.e. we haven't done any work. In such a case, we can instead fast-forward to the new base without invoking the rebase process. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'ak/commit-only-allow-empty' into maintJunio C Hamano2017-01-171-3/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git commit --allow-empty --only" (no pathspec) with dirty index ought to be an acceptable way to create a new commit that does not change any paths, but it was forbidden, perhaps because nobody needed it so far. * ak/commit-only-allow-empty: commit: remove 'Clever' message for --only --amend commit: make --only --allow-empty work without paths
| * | | | commit: remove 'Clever' message for --only --amendak/commit-only-allow-emptyAndreas Krey2016-12-091-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The behavior is now documented; more importantly, rewarding the user with a "Wow, you are clever" praise afterwards is not an effective way to advertise the feature--at that point the user already knows. Signed-off-by: Andreas Krey <a.krey@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | commit: make --only --allow-empty work without pathsAndreas Krey2016-12-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | --only is implied when paths are present, and required them unless --amend. But with --allow-empty it should be allowed as well - it is the only way to create an empty commit in the presence of staged changes. Signed-off-by: Andreas Krey <a.krey@gmx.de> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'nd/worktree-list-fixup' into maintJunio C Hamano2017-01-172-7/+9
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The output from "git worktree list" was made in readdir() order, and was unstable. * nd/worktree-list-fixup: worktree list: keep the list sorted worktree.c: get_worktrees() takes a new flag argument get_worktrees() must return main worktree as first item even on error worktree: reorder an if statement worktree.c: zero new 'struct worktree' on allocation
| * | | | | worktree list: keep the list sortednd/worktree-list-fixupNguyễn Thái Ngọc Duy2016-11-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It makes it easier to write tests for. But it should also be good for the user since locating a worktree by eye would be easier once they notice this. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | worktree.c: get_worktrees() takes a new flag argumentNguyễn Thái Ngọc Duy2016-11-282-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is another no-op patch, in preparation for get_worktrees() to do optional things, like sorting. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | get_worktrees() must return main worktree as first item even on errorNguyễn Thái Ngọc Duy2016-11-281-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is required by git-worktree.txt, stating that the main worktree is the first line (especially in --porcelain mode when we can't just change behavior at will). There's only one case when get_worktrees() may skip main worktree, when parse_ref() fails. Update the code so that we keep first item as main worktree and return something sensible in this case: - In user-friendly mode, since we're not constraint by anything, returning "(error)" should do the job (we already show "(detached HEAD)" which is not machine-friendly). Actually errors should be printed on stderr by parse_ref() (*) - In plumbing mode, we do not show neither 'bare', 'detached' or 'branch ...', which is possible by the format description if I read it right. Careful readers may realize that when the local variable "head_ref" in get_main_worktree() is emptied, add_head_info() will do nothing to wt->head_sha1. But that's ok because head_sha1 is zero-ized in the previous patch. (*) Well, it does not. But it's supposed to be a stop gap implementation until we can reuse refs code to parse "ref: " stuff in HEAD, from resolve_refs_unsafe(). Now may be the time since refs refactoring is mostly done. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | worktree: reorder an if statementNguyễn Thái Ngọc Duy2016-11-281-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is no-op. But it helps reduce diff noise in the next patch. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | Merge branch 'jk/rev-parse-symbolic-parents-fix' into maintJunio C Hamano2017-01-171-1/+6
|\ \ \ \ \ \ | |_|_|_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git rev-parse --symbolic" failed with a more recent notation like "HEAD^-1" and "HEAD^!". * jk/rev-parse-symbolic-parents-fix: rev-parse: fix parent shorthands with --symbolic
| * | | | | rev-parse: fix parent shorthands with --symbolicjk/rev-parse-symbolic-parents-fixJeff King2016-11-161-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The try_parent_shorthands() function shows each parent via show_rev(). We pass the correct parent sha1, but our "name" parameter still points at the original refname. So asking for a regular rev-parse works fine (it prints the sha1s), but asking for the symbolic name gives nonsense like: $ git rev-parse --symbolic HEAD^-1 HEAD ^HEAD which is always an empty set of commits. Asking for "^!" is likewise broken, with the added bonus that its prints ^HEAD for _each_ parent. And "^@" just prints HEAD repeatedly. Arguably it would be correct to just pass NULL as the name here, and always get the parent expressed as a sha1. The "--symbolic" documentaton claims only "as close to the original input as possible", and we certainly fallback to sha1s where necessary. But it's pretty easy to generate a symbolic name on the fly from the original. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | Merge branch 'jc/setup-cleanup-fix'Junio C Hamano2016-11-233-8/+19
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git archive" and "git mailinfo" stopped reading from local configuration file with a recent update. * jc/setup-cleanup-fix: archive: read local configuration mailinfo: read local configuration
| * | | | | | archive: read local configurationjc/setup-cleanup-fixJunio C Hamano2016-11-222-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since b9605bc4f2 ("config: only read .git/config from configured repos", 2016-09-12), we do not read from ".git/config" unless we know we are in a repository. "git archive" however didn't do the repository discovery and instead relied on the old behaviour. Teach the command to run a "gentle" version of repository discovery so that local configuration variables are honoured. [jc: stole tests from peff] Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | mailinfo: read local configurationJunio C Hamano2016-11-221-4/+15
| | |/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since b9605bc4f2 ("config: only read .git/config from configured repos", 2016-09-12), we do not read from ".git/config" unless we know we are in a repository. "git mailinfo" however didn't do the repository discovery and instead relied on the old behaviour. This was mostly OK because it was merely run as a helper program by other porcelain scripts that first chdir's up to the root of the working tree. Teach the command to run a "gentle" version of repository discovery so that local configuration variables like mailinfo.scissors are honoured. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | Merge branch 'js/rebase-i-commentchar-fix'Junio C Hamano2016-11-231-1/+3
|\ \ \ \ \ \ | |/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "git rebase -i" did not work well with core.commentchar configuration variable for two reasons, both of which have been fixed. * js/rebase-i-commentchar-fix: rebase -i: handle core.commentChar=auto stripspace: respect repository config rebase -i: highlight problems with core.commentchar
| * | | | | stripspace: respect repository configJohannes Schindelin2016-11-211-1/+3
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way "git stripspace" reads the configuration was not quite kosher, in that the code forgot to probe for a possibly existing repository (note: stripspace is designed to be usable outside the repository as well). It read .git/config only when it was run from the top-level of the working tree by accident. A recent change b9605bc4f2 ("config: only read .git/config from configured repos", 2016-09-12) stopped reading the repository-local configuration file ".git/config" unless the repository discovery process is done, so that .git/config is never read even when run from the top-level, exposing the old bug more. When rebasing interactively with a commentChar defined in the current repository's config, the help text at the bottom of the edit script potentially used an incorrect comment character. This was not only funny-looking, but also resulted in tons of warnings like this one: Warning: the command isn't recognized in the following line - # Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'jk/create-branch-remove-unused-param'Junio C Hamano2016-11-172-3/+3
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code clean-up. * jk/create-branch-remove-unused-param: create_branch: drop unused "head" parameter
| * | | | | create_branch: drop unused "head" parameterjk/create-branch-remove-unused-paramJeff King2016-11-092-3/+3
| | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function used to have the caller pass in the current value of HEAD, in order to make sure we didn't clobber HEAD. In 55c4a6730, that logic moved to validate_new_branchname(), which just resolves HEAD itself. The parameter to create_branch is now unused. Since we have to update and re-wrap the docstring describing the parameters anyway, let's take this opportunity to break it out into a list, which makes it easier to find the parameters. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'rs/commit-pptr-simplify'Junio C Hamano2016-10-311-8/+6
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code simplification. * rs/commit-pptr-simplify: commit: simplify building parents list
| * | | | | commit: simplify building parents listrs/commit-pptr-simplifyRené Scharfe2016-10-301-8/+6
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Push pptr down into the FROM_MERGE branch of the if/else statement, where it's actually used, and call commit_list_append() for appending elements instead of playing tricks with commit_list_insert(). Call copy_commit_list() in the amend branch instead of open-coding it. Don't bother setting pptr in the final branch as it's not used thereafter. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'ls/filter-process'Junio C Hamano2016-10-314-8/+8
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The smudge/clean filter API expect an external process is spawned to filter the contents for each path that has a filter defined. A new type of "process" filter API has been added to allow the first request to run the filter for a path to spawn a single process, and all filtering need is served by this single process for multiple paths, reducing the process creation overhead. * ls/filter-process: contrib/long-running-filter: add long running filter example convert: add filter.<driver>.process option convert: prepare filter.<driver>.process option convert: make apply_filter() adhere to standard Git error handling pkt-line: add functions to read/write flush terminated packet streams pkt-line: add packet_write_gently() pkt-line: add packet_flush_gently() pkt-line: add packet_write_fmt_gently() pkt-line: extract set_packet_header() pkt-line: rename packet_write() to packet_write_fmt() run-command: add clean_on_exit_handler run-command: move check_pipe() from write_or_die to run_command convert: modernize tests convert: quote filter names in error messages
| * | | | | pkt-line: rename packet_write() to packet_write_fmt()Lars Schneider2016-10-174-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | packet_write() should be called packet_write_fmt() because it is a printf-like function that takes a format string as first parameter. packet_write_fmt() should be used for text strings only. Arbitrary binary data should use a new packet_write() function that is introduced in a subsequent patch. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | Merge branch 'ls/git-open-cloexec'Junio C Hamano2016-10-311-1/+1
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Git generally does not explicitly close file descriptors that were open in the parent process when spawning a child process, but most of the time the child does not want to access them. As Windows does not allow removing or renaming a file that has a file descriptor open, a slow-to-exit child can even break the parent process by holding onto them. Use O_CLOEXEC flag to open files in various codepaths. * ls/git-open-cloexec: read-cache: make sure file handles are not inherited by child processes sha1_file: open window into packfiles with O_CLOEXEC sha1_file: rename git_open_noatime() to git_open()
| * | | | | | sha1_file: rename git_open_noatime() to git_open()Lars Schneider2016-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function is meant to be used when reading from files in the object store, and the original objective was to avoid smudging atime of loose object files too often, hence its name. Because we'll be extending its role in the next commit to also arrange the file descriptors they return auto-closed in the child processes, rename it to lose "noatime" part that is too specific. Signed-off-by: Lars Schneider <larsxschneider@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | Merge branch 'nd/ita-empty-commit'Junio C Hamano2016-10-271-4/+9
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When new paths were added by "git add -N" to the index, it was enough to circumvent the check by "git commit" to refrain from making an empty commit without "--allow-empty". The same logic prevented "git status" to show such a path as "new file" in the "Changes not staged for commit" section. * nd/ita-empty-commit: commit: don't be fooled by ita entries when creating initial commit commit: fix empty commit creation when there's no changes but ita entries diff: add --ita-[in]visible-in-index diff-lib: allow ita entries treated as "not yet exist in index"
| * | | | | | | commit: don't be fooled by ita entries when creating initial commitnd/ita-empty-commitNguyễn Thái Ngọc Duy2016-10-241-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ita entries are dropped at tree generation phase. If the entire index consists of just ita entries, the result would be a a commit with no entries, which should be caught unless --allow-empty is specified. The test "!!active_nr" is not sufficient to catch this. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | commit: fix empty commit creation when there's no changes but ita entriesNguyễn Thái Ngọc Duy2016-10-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If i-t-a entries are present and there is no change between the index and HEAD i-t-a entries, index_differs_from() still returns "dirty, new entries" (aka, the resulting commit is not empty), but cache-tree will skip i-t-a entries and produce the exact same tree of current commit. index_differs_from() is supposed to catch this so we can abort git-commit (unless --no-empty is specified). Update it to optionally ignore i-t-a entries when doing a diff between the index and HEAD so that it would return "no change" in this case and abort commit. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | Merge branch 'js/prepare-sequencer'Junio C Hamano2016-10-272-25/+23
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update of the sequencer codebase to make it reusable to reimplement "rebase -i" continues. * js/prepare-sequencer: (27 commits) sequencer: mark all error messages for translation sequencer: start error messages consistently with lower case sequencer: quote filenames in error messages sequencer: mark action_name() for translation sequencer: remove overzealous assumption in rebase -i mode sequencer: teach write_message() to append an optional LF sequencer: refactor write_message() to take a pointer/length sequencer: roll back lock file if write_message() failed sequencer: stop releasing the strbuf in write_message() sequencer: left-trim lines read from the script sequencer: support cleaning up commit messages sequencer: support amending commits sequencer: allow editing the commit message on a case-by-case basis sequencer: introduce a helper to read files written by scripts sequencer: prepare for rebase -i's commit functionality sequencer: remember the onelines when parsing the todo file sequencer: get rid of the subcommand field sequencer: avoid completely different messages for different actions sequencer: strip CR from the todo script sequencer: completely revamp the "todo" script parsing ...
| * | | | | | | | sequencer: get rid of the subcommand fieldJohannes Schindelin2016-10-211-20/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The subcommands are used exactly once, at the very beginning of sequencer_pick_revisions(), to determine what to do. This is an unnecessary level of indirection: we can simply call the correct function to begin with. So let's do that. While at it, ensure that the subcommands return an error code so that they do not have to die() all over the place (bad practice for library functions...). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | sequencer: plug memory leaks for the option valuesJohannes Schindelin2016-10-211-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sequencer is our attempt to lib-ify cherry-pick. Yet it behaves like a one-shot command when it reads its configuration: memory is allocated and released only when the command exits. This is kind of okay for git-cherry-pick, which *is* a one-shot command. All the work to make the sequencer its work horse was done to allow using the functionality as a library function, though, including proper clean-up after use. To remedy that, take custody of the option values in question, allocating and duping literal constants as needed and freeing them at end. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | sequencer: use memoized sequencer directory pathJohannes Schindelin2016-10-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | sequencer: use static initializers for replay_optsJohannes Schindelin2016-10-171-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change is not completely faithful: instead of initializing all fields to 0, we choose to initialize command and subcommand to -1 (instead of defaulting to REPLAY_REVERT and REPLAY_NONE, respectively). Practically, it makes no difference at all, but future-proofs the code to require explicit assignments for both fields. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | Merge branch 'sb/submodule-ignore-trailing-slash'Junio C Hamano2016-10-271-2/+6
|\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A minor regression fix for "git submodule". * sb/submodule-ignore-trailing-slash: t0060: sidestep surprising path mangling results on Windows submodule: ignore trailing slash in relative url submodule: ignore trailing slash on superproject URL
| * | | | | | | | | submodule: ignore trailing slash in relative urlStefan Beller2016-10-101-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is similar to the previous patch, though no user reported a bug and I could not find a regressive behavior. However it is a good thing to be strict on the output and for that we always omit a trailing slash. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | | | | | | submodule: ignore trailing slash on superproject URLStefan Beller2016-10-101-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before 63e95beb0 (2016-04-15, submodule: port resolve_relative_url from shell to C), it did not matter if the superprojects URL had a trailing slash or not. It was just chopped off as one of the first steps (The "remoteurl=${remoteurl%/}" near the beginning of resolve_relative_url(), which was removed in said commit). When porting this to the C version, an off-by-one error was introduced and we did not check the actual last character to be a slash, but the NULL delimiter. Reintroduce the behavior from before 63e95beb0, to ignore the trailing slash. Reported-by: <venv21@gmail.com> Helped-by: Dennis Kaarsemaker <dennis@kaarsemaker.net> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | | | | | | Merge branch 'jk/no-looking-at-dotgit-outside-repo'Junio C Hamano2016-10-272-16/+11
|\ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update "git diff --no-index" codepath not to try to peek into .git/ directory that happens to be under the current directory, when we know we are operating outside any repository. * jk/no-looking-at-dotgit-outside-repo: diff: handle sha1 abbreviations outside of repository diff_aligned_abbrev: use "struct oid" diff_unique_abbrev: rename to diff_aligned_abbrev find_unique_abbrev: use 4-buffer ring test-*-cache-tree: setup git dir read info/{attributes,exclude} only when in repository
| * | | | | | | | | | find_unique_abbrev: use 4-buffer ringJeff King2016-10-262-16/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some code paths want to format multiple abbreviated sha1s in the same output line. Because we use a single static buffer for our return value, they have to either break their output into several calls or allocate their own arrays and use find_unique_abbrev_r(). Intead, let's mimic sha1_to_hex() and use a ring of several buffers, so that the return value stays valid through multiple calls. This shortens some of the callers, and makes it harder to for them to make a silly mistake. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>