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2017-03-17Merge branch 'rs/blame-code-cleanup'Libravatar Junio C Hamano1-17/+8
Code clean-up. * rs/blame-code-cleanup: blame: move blame_entry duplication to add_blame_entry()
2017-03-17Merge branch 'cc/split-index-config'Libravatar Junio C Hamano2-25/+17
The experimental "split index" feature has gained a few configuration variables to make it easier to use. * cc/split-index-config: (22 commits) Documentation/git-update-index: explain splitIndex.* Documentation/config: add splitIndex.sharedIndexExpire read-cache: use freshen_shared_index() in read_index_from() read-cache: refactor read_index_from() t1700: test shared index file expiration read-cache: unlink old sharedindex files config: add git_config_get_expiry() from gc.c read-cache: touch shared index files when used sha1_file: make check_and_freshen_file() non static Documentation/config: add splitIndex.maxPercentChange t1700: add tests for splitIndex.maxPercentChange read-cache: regenerate shared index if necessary config: add git_config_get_max_percent_split_change() Documentation/git-update-index: talk about core.splitIndex config var Documentation/config: add information for core.splitIndex t1700: add tests for core.splitIndex update-index: warn in case of split-index incoherency read-cache: add and then use tweak_split_index() split-index: add {add,remove}_split_index() functions config: add git_config_get_split_index() ...
2017-03-14Merge branch 'kn/ref-filter-branch-list'Libravatar Junio C Hamano1-4/+15
"git branch --list" takes the "--abbrev" and "--no-abbrev" options to control the output of the object name in its "-v"(erbose) output, but a recent update started ignoring them; this fixes it before the breakage reaches to any released version. * kn/ref-filter-branch-list: branch: honor --abbrev/--no-abbrev in --list mode
2017-03-14Merge branch 'jk/push-deadlock-regression-fix'Libravatar Junio C Hamano1-1/+4
"git push" had a handful of codepaths that could lead to a deadlock when unexpected error happened, which has been fixed. * jk/push-deadlock-regression-fix: send-pack: report signal death of pack-objects send-pack: read "unpack" status even on pack-objects failure send-pack: improve unpack-status error messages send-pack: use skip_prefix for parsing unpack status send-pack: extract parsing of "unpack" response receive-pack: fix deadlock when we cannot create tmpdir
2017-03-14Merge branch 'mm/fetch-show-error-message-on-unadvertised-object'Libravatar Junio C Hamano1-6/+1
"git fetch" that requests a commit by object name, when the other side does not allow such an request, failed without much explanation. * mm/fetch-show-error-message-on-unadvertised-object: fetch-pack: add specific error for fetching an unadvertised object fetch_refs_via_pack: call report_unmatched_refs fetch-pack: move code to report unmatched refs to a function
2017-03-14Merge branch 'jk/interpret-branch-name'Libravatar Junio C Hamano3-3/+6
"git branch @" created refs/heads/@ as a branch, and in general the code that handled @{-1} and @{upstream} was a bit too loose in disambiguating. * jk/interpret-branch-name: checkout: restrict @-expansions when finding branch strbuf_check_ref_format(): expand only local branches branch: restrict @-expansions when deleting t3204: test git-branch @-expansion corner cases interpret_branch_name: allow callers to restrict expansions strbuf_branchname: add docstring strbuf_branchname: drop return value interpret_branch_name: move docstring to header file interpret_branch_name(): handle auto-namelen for @{-1}
2017-03-12Merge branch 'js/realpath-pathdup-fix'Libravatar Junio C Hamano1-3/+3
Git v2.12 was shipped with an embarrassing breakage where various operations that verify paths given from the user stopped dying when seeing an issue, and instead later triggering segfault. * js/realpath-pathdup-fix: real_pathdup(): fix callsites that wanted it to die on error t1501: demonstrate NULL pointer access with invalid GIT_WORK_TREE
2017-03-11blame: move blame_entry duplication to add_blame_entry()Libravatar René Scharfe1-17/+8
All callers of add_blame_entry() allocate and copy the second argument. Let the function do it for them, reducing code duplication. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-10Merge branch 'rs/log-email-subject'Libravatar Junio C Hamano2-3/+4
Code clean-up. * rs/log-email-subject: pretty: use fmt_output_email_subject() log-tree: factor out fmt_output_email_subject()
2017-03-10Merge branch 'sb/submodule-init-url-selection'Libravatar Junio C Hamano1-5/+3
When "git submodule init" decides that the submodule in the working tree is its upstream, it now gives a warning as it is not a very common setup. * sb/submodule-init-url-selection: submodule init: warn about falling back to a local path
2017-03-10branch: honor --abbrev/--no-abbrev in --list modeLibravatar Junio C Hamano1-4/+15
When the "branch --list" command was converted to use the --format facility from the ref-filter API, we forgot to honor the --abbrev setting in the default output format and instead used a hardcoded "7". Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-08real_pathdup(): fix callsites that wanted it to die on errorLibravatar Johannes Schindelin1-3/+3
In 4ac9006f832 (real_path: have callers use real_pathdup and strbuf_realpath, 2016-12-12), we changed the xstrdup(real_path()) pattern to use real_pathdup() directly. The problem with this change is that real_path() calls strbuf_realpath() with die_on_error = 1 while real_pathdup() calls it with die_on_error = 0. Meaning that in cases where real_path() causes Git to die() with an error message, real_pathdup() is silent and returns NULL instead. The callers, however, are ill-prepared for that change, as they expect the return value to be non-NULL (and otherwise the function died with an appropriate error message). Fix this by extending real_pathdup()'s signature to accept the die_on_error flag and simply pass it through to strbuf_realpath(), and then adjust all callers after a careful audit whether they would handle NULLs well. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-07receive-pack: fix deadlock when we cannot create tmpdirLibravatar Jeff King1-1/+4
The err_fd descriptor passed to the unpack() function is intended to be handed off to the child index-pack, and our async muxer will read until it gets EOF. However, if we encounter an error before handing off the descriptor, we must manually close(err_fd). Otherwise we will be waiting for our muxer to finish, while the muxer is waiting for EOF on err_fd. We fixed an identical deadlock already in 49ecfa13f (receive-pack: close sideband fd on early pack errors, 2013-04-19). But since then, the function grew a new early-return in 722ff7f87 (receive-pack: quarantine objects until pre-receive accepts, 2016-10-03), when we fail to create a temporary directory. This return needs the same treatment. Reported-by: Horst Schirmeier <horst@schirmeier.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-02fetch-pack: move code to report unmatched refs to a functionLibravatar Matt McCutchen1-6/+1
Prepare to reuse this code in transport.c for "git fetch". While we're here, internationalize the existing error message. Signed-off-by: Matt McCutchen <matt@mattmccutchen.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-02checkout: restrict @-expansions when finding branchLibravatar Jeff King1-1/+1
When we parse "git checkout $NAME", we try to interpret $NAME as a local branch-name. If it is, then we point HEAD to that branch. Otherwise, we detach the HEAD at whatever commit $NAME points to. We do the interpretation by calling strbuf_branchname(), and then blindly sticking "refs/heads/" on the front. This leads to nonsense results when expansions like "@{upstream}" or "@" point to something besides a local branch. We end up with a local branch name like "refs/heads/origin/master" or "refs/heads/HEAD". Normally this has no user-visible effect because those branches don't exist, and so we fallback to feeding the result to get_sha1(), which resolves them correctly. But as the new test in t3204 shows, there are corner cases where the effect is observable, and we check out the wrong local branch rather than detaching to the correct one. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-02branch: restrict @-expansions when deletingLibravatar Jeff King1-1/+4
We use strbuf_branchname() to expand the branch name from the command line, so you can delete the branch given by @{-1}, for example. However, we allow other nonsense like "@", and we do not respect our "-r" flag (so we may end up deleting an oddly-named local ref instead of a remote one). We can fix this by passing the appropriate "allowed" flag to strbuf_branchname(). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-02interpret_branch_name: allow callers to restrict expansionsLibravatar Jeff King3-3/+3
The interpret_branch_name() function converts names like @{-1} and @{upstream} into branch names. The expanded ref names are not fully qualified, and may be outside of the refs/heads/ namespace (e.g., "@" expands to "HEAD", and "@{upstream}" is likely to be in "refs/remotes/"). This is OK for callers like dwim_ref() which are primarily interested in resolving the resulting name, no matter where it is. But callers like "git branch" treat the result as a branch name in refs/heads/. When we expand to a ref outside that namespace, the results are very confusing (e.g., "git branch @" tries to create refs/heads/HEAD, which is nonsense). Callers can't know from the returned string how the expansion happened (e.g., did the user really ask for a branch named "HEAD", or did we do a bogus expansion?). One fix would be to return some out-parameters describing the types of expansion that occurred. This has the benefit that the caller can generate precise error messages ("I understood @{upstream} to mean origin/master, but that is a remote tracking branch, so you cannot create it as a local name"). However, out-parameters make the function interface somewhat cumbersome. Instead, let's do the opposite: let the caller tell us which elements to expand. That's easier to pass in, and none of the callers give more precise error messages than "@{upstream} isn't a valid branch name" anyway (which should be sufficient). The strbuf_branchname() function needs a similar parameter, as most of the callers access interpret_branch_name() through it. We can break the callers down into two groups: 1. Callers that are happy with any kind of ref in the result. We pass "0" here, so they continue to work without restrictions. This includes merge_name(), the reflog handling in add_pending_object_with_path(), and substitute_branch_name(). This last is what powers dwim_ref(). 2. Callers that have funny corner cases (mostly in git-branch and git-checkout). These need to make use of the new parameter, but I've left them as "0" in this patch, and will address them individually in follow-on patches. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-01pretty: use fmt_output_email_subject()Libravatar René Scharfe2-3/+4
Add the email-style subject prefix (e.g. "Subject: [PATCH] ") directly when it's needed instead of letting log_write_email_headers() prepare it in a static buffer in advance. This simplifies storage ownership and code flow. Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-01config: add git_config_get_expiry() from gc.cLibravatar Christian Couder1-13/+2
This function will be used in a following commit to get the expiration time of the shared index files from the config, and it is generic enough to be put in "config.c". Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-01update-index: warn in case of split-index incoherencyLibravatar Christian Couder1-1/+10
When users are using `git update-index --(no-)split-index`, they may expect the split-index feature to be used or not according to the option they just used, but this might not be the case if the new "core.splitIndex" config variable has been set. In this case let's warn about what will happen and why. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-03-01split-index: add {add,remove}_split_index() functionsLibravatar Christian Couder1-12/+6
Also use the functions in cmd_update_index() in builtin/update-index.c. These functions will be used in a following commit to tweak our use of the split-index feature depending on the setting of a configuration variable. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-28submodule init: warn about falling back to a local pathLibravatar Stefan Beller1-5/+3
When a submodule is initialized, the config variable 'submodule.<name>.url' is set depending on the value of the same variable in the .gitmodules file. When the URL indicates to be relative, then the url is computed relative to its default remote. The default remote cannot be determined accurately in all cases, such that it falls back to 'origin'. The 'origin' remote may not exist, though. In that case we give up looking for a suitable remote and we'll just assume it to be a local relative path. This can be confusing to users as there is a lot of guessing involved, which is not obvious to the user. So in the corner case of assuming a local autoritative truth, warn the user to lessen the confusion. This behavior was introduced in 4d6893200 (submodule add: allow relative repository path even when no url is set, 2011-06-06), which shared the code with submodule-init and then ported to C in 3604242f080a (submodule: port init from shell to C, 2016-04-15). In case of submodule-add, this behavior makes sense in some use cases[1], however for submodule-init there does not seem to be an immediate obvious use case to fall back to a local submodule. However there might be, so warn instead of die here. While adding the warning, also clarify the behavior of relative URLs in the documentation. [1] e.g. http://stackoverflow.com/questions/8721984/git-ignore-files-for-public-repository-but-not-for-private "store a secret locally in a submodule, with no intention to publish it" Reported-by: Shawn Pearce <spearce@spearce.org> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-27Merge branch 'rl/remote-allow-missing-branch-name-merge'Libravatar Junio C Hamano1-1/+3
"git remote rm X", when a branch has remote X configured as the value of its branch.*.remote, tried to remove branch.*.remote and branch.*.merge and failed if either is unset. * rl/remote-allow-missing-branch-name-merge: remote: ignore failure to remove missing branch.<name>.merge
2017-02-27Merge branch 'km/delete-ref-reflog-message'Libravatar Junio C Hamano9-14/+15
"git update-ref -d" and other operations to delete references did not leave any entry in HEAD's reflog when the reference being deleted was the current branch. This is not a problem in practice because you do not want to delete the branch you are currently on, but caused renaming of the current branch to something else not to be logged in a useful way. * km/delete-ref-reflog-message: branch: record creation of renamed branch in HEAD's log rename_ref: replace empty message in HEAD's log update-ref: pass reflog message to delete_ref() delete_ref: accept a reflog message argument
2017-02-27Merge branch 'js/git-path-in-subdir'Libravatar Junio C Hamano1-4/+11
The "--git-path", "--git-common-dir", and "--shared-index-path" options of "git rev-parse" did not produce usable output. They are now updated to show the path to the correct file, relative to where the caller is. * js/git-path-in-subdir: rev-parse: fix several options when running in a subdirectory rev-parse tests: add tests executed from a subdirectory
2017-02-27Merge branch 'nd/clean-preserve-errno-in-warning'Libravatar Junio C Hamano1-4/+12
Some warning() messages from "git clean" were updated to show the errno from failed system calls. * nd/clean-preserve-errno-in-warning: clean: use warning_errno() when appropriate
2017-02-27Merge branch 'jk/show-branch-lift-name-len-limit'Libravatar Junio C Hamano1-29/+13
"git show-branch" expected there were only very short branch names in the repository and used a fixed-length buffer to hold them without checking for overflow. * jk/show-branch-lift-name-len-limit: show-branch: use skip_prefix to drop magic numbers show-branch: store resolved head in heap buffer show-branch: drop head_len variable
2017-02-27Merge branch 'jk/grep-no-index-fix'Libravatar Junio C Hamano1-27/+55
The code to parse the command line "git grep <patterns>... <rev> [[--] <pathspec>...]" has been cleaned up, and a handful of bugs have been fixed (e.g. we used to check "--" if it is a rev). * jk/grep-no-index-fix: grep: treat revs the same for --untracked as for --no-index grep: do not diagnose misspelt revs with --no-index grep: avoid resolving revision names in --no-index case grep: fix "--" rev/pathspec disambiguation grep: re-order rev-parsing loop grep: do not unnecessarily query repo for "--" grep: move thread initialization a little lower
2017-02-27Merge branch 'dt/gc-ignore-old-gc-logs'Libravatar Junio C Hamano1-7/+50
A "gc.log" file left by a backgrounded "gc --auto" disables further automatic gc; it has been taught to run at least once a day (by default) by ignoring a stale "gc.log" file that is too old. * dt/gc-ignore-old-gc-logs: gc: ignore old gc.log files
2017-02-27Merge branch 'js/rebase-helper'Libravatar Junio C Hamano1-0/+40
"git rebase -i" starts using the recently updated "sequencer" code. * js/rebase-helper: rebase -i: use the rebase--helper builtin rebase--helper: add a builtin helper for interactive rebases
2017-02-27Merge branch 'bw/attr'Libravatar Junio C Hamano2-46/+39
The gitattributes machinery is being taught to work better in a multi-threaded environment. * bw/attr: (27 commits) attr: reformat git_attr_set_direction() function attr: push the bare repo check into read_attr() attr: store attribute stack in attr_check structure attr: tighten const correctness with git_attr and match_attr attr: remove maybe-real, maybe-macro from git_attr attr: eliminate global check_all_attr array attr: use hashmap for attribute dictionary attr: change validity check for attribute names to use positive logic attr: pass struct attr_check to collect_some_attrs attr: retire git_check_attrs() API attr: convert git_check_attrs() callers to use the new API attr: convert git_all_attrs() to use "struct attr_check" attr: (re)introduce git_check_attr() and struct attr_check attr: rename function and struct related to checking attributes attr.c: outline the future plans by heavily commenting Documentation: fix a typo attr.c: add push_stack() helper attr: support quoting pathname patterns in C style attr.c: plug small leak in parse_attr_line() attr.c: tighten constness around "git_attr" structure ...
2017-02-27Merge branch 'sg/completion'Libravatar Junio C Hamano1-8/+18
Clean-up and updates to command line completion (in contrib/). * sg/completion: (22 commits) completion: restore removed line continuating backslash completion: cache the path to the repository completion: extract repository discovery from __gitdir() completion: don't guard git executions with __gitdir() completion: consolidate silencing errors from git commands completion: don't use __gitdir() for git commands completion: respect 'git -C <path>' rev-parse: add '--absolute-git-dir' option completion: fix completion after 'git -C <path>' completion: don't offer commands when 'git --opt' needs an argument completion: list short refs from a remote given as a URL completion: don't list 'HEAD' when trying refs completion outside of a repo completion: list refs from remote when remote's name matches a directory completion: respect 'git --git-dir=<path>' when listing remote refs completion: fix most spots not respecting 'git --git-dir=<path>' completion: ensure that the repository path given on the command line exists completion tests: add tests for the __git_refs() helper function completion tests: check __gitdir()'s output in the error cases completion tests: consolidate getting path of current working directory completion tests: make the $cur variable local to the test helper functions ...
2017-02-27Merge branch 'cw/tag-reflog-message'Libravatar Junio C Hamano1-1/+53
"git tag" did not leave useful message when adding a new entry to reflog; this was left unnoticed for a long time because refs/tags/* doesn't keep reflog by default. * cw/tag-reflog-message: tag: generate useful reflog message
2017-02-27Merge branch 'jk/alternate-ref-optim'Libravatar Junio C Hamano1-19/+22
Optimizes resource usage while enumerating refs from alternate object store, to help receiving end of "push" that hosts a repository with many "forks". * jk/alternate-ref-optim: receive-pack: avoid duplicates between our refs and alternates receive-pack: treat namespace .have lines like alternates receive-pack: fix misleading namespace/.have comment receive-pack: use oidset to de-duplicate .have lines add oidset API fetch-pack: cache results of for_each_alternate_ref for_each_alternate_ref: replace transport code with for-each-ref for_each_alternate_ref: pass name/oid instead of ref struct for_each_alternate_ref: use strbuf for path allocation for_each_alternate_ref: stop trimming trailing slashes for_each_alternate_ref: handle failure from real_pathdup()
2017-02-27Merge branch 'kn/ref-filter-branch-list'Libravatar Junio C Hamano2-198/+96
The code to list branches in "git branch" has been consolidated with the more generic ref-filter API. * kn/ref-filter-branch-list: (21 commits) ref-filter: resurrect "strip" as a synonym to "lstrip" branch: implement '--format' option branch: use ref-filter printing APIs branch, tag: use porcelain output ref-filter: allow porcelain to translate messages in the output ref-filter: add an 'rstrip=<N>' option to atoms which deal with refnames ref-filter: modify the 'lstrip=<N>' option to work with negative '<N>' ref-filter: Do not abruptly die when using the 'lstrip=<N>' option ref-filter: rename the 'strip' option to 'lstrip' ref-filter: make remote_ref_atom_parser() use refname_atom_parser_internal() ref-filter: introduce refname_atom_parser() ref-filter: introduce refname_atom_parser_internal() ref-filter: make "%(symref)" atom work with the ':short' modifier ref-filter: add support for %(upstream:track,nobracket) ref-filter: make %(upstream:track) prints "[gone]" for invalid upstreams ref-filter: introduce format_ref_array_item() ref-filter: move get_head_description() from branch.c ref-filter: modify "%(objectname:short)" to take length ref-filter: implement %(if:equals=<string>) and %(if:notequals=<string>) ref-filter: include reference to 'used_atom' within 'atom_value' ...
2017-02-27Merge branch 'jk/delta-chain-limit'Libravatar Junio C Hamano1-23/+110
"git repack --depth=<n>" for a long time busted the specified depth when reusing delta from existing packs. This has been corrected. * jk/delta-chain-limit: pack-objects: convert recursion to iteration in break_delta_chain() pack-objects: enforce --depth limit in reused deltas
2017-02-27Merge branch 'jk/describe-omit-some-refs'Libravatar Junio C Hamano2-19/+90
"git describe" and "git name-rev" have been taught to take more than one refname patterns to restrict the set of refs to base their naming output on, and also learned to take negative patterns to name refs not to be used for naming via their "--exclude" option. * jk/describe-omit-some-refs: describe: teach describe negative pattern matches describe: teach --match to accept multiple patterns name-rev: add support to exclude refs by pattern match name-rev: extend --refs to accept multiple patterns doc: add documentation for OPT_STRING_LIST
2017-02-21remote: ignore failure to remove missing branch.<name>.mergeLibravatar Ross Lagerwall1-1/+3
It is not all too unusual for a branch to use "branch.<name>.remote" without "branch.<name>.merge". You may be using the 'push.default' configuration set to 'current', for example, and do $ git checkout -b side colleague/side $ git config branch.side.remote colleague However, "git remote rm" to remove the remote used in such a manner fails with "fatal: could not unset 'branch.<name>.merge'" because it assumes that a branch that has .remote defined must also have .merge defined. Detect the "cannot unset because it is not set to begin with" case and ignore it. Signed-off-by: Ross Lagerwall <rosslagerwall@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-20branch: record creation of renamed branch in HEAD's logLibravatar Kyle Meyer1-2/+3
Renaming the current branch adds an event to the current branch's log and to HEAD's log. However, the logged entries differ. The entry in the branch's log represents the entire renaming operation (the old and new hash are identical), whereas the entry in HEAD's log represents the deletion only (the new sha1 is null). Extend replace_each_worktree_head_symref(), whose only caller is branch_rename(), to take a reflog message argument. This allows the creation of the new ref to be recorded in HEAD's log. As a result, the renaming event is represented by two entries (a deletion and a creation entry) in HEAD's log. It's a bit unfortunate that the branch's log and HEAD's log now represent the renaming event in different ways. Given that the renaming operation is not atomic, the two-entry form is a more accurate representation of the operation and is more useful for debugging purposes if a failure occurs between the deletion and creation events. It would make sense to move the branch's log to the two-entry form, but this would involve changes to how the rename is carried out and to how the update flags and reflogs are processed for deletions, so it may not be worth the effort. Based-on-patch-by: Jeff King <peff@peff.net> Signed-off-by: Kyle Meyer <kyle@kyleam.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-20update-ref: pass reflog message to delete_ref()Libravatar Kyle Meyer1-1/+1
Now that delete_ref() accepts a reflog message, pass the user-provided message to delete_ref() rather than silently dropping it. Signed-off-by: Kyle Meyer <kyle@kyleam.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-20delete_ref: accept a reflog message argumentLibravatar Kyle Meyer9-12/+12
When the current branch is renamed with 'git branch -m/-M' or deleted with 'git update-ref -m<msg> -d', the event is recorded in HEAD's log with an empty message. In preparation for adding a more meaningful message to HEAD's log in these cases, update delete_ref() to take a message argument and pass it along to ref_transaction_delete(). Modify all callers to pass NULL for the new message argument; no change in behavior is intended. Note that this is relevant for HEAD's log but not for the deleted ref's log, which is currently deleted along with the ref. Even if it were not, an entry for the deletion wouldn't be present in the deleted ref's log. files_transaction_commit() writes to the log if REF_NEEDS_COMMIT or REF_LOG_ONLY are set, but lock_ref_for_update() doesn't set REF_NEEDS_COMMIT for the deleted ref because REF_DELETING is set. In contrast, the update for HEAD has REF_LOG_ONLY set by split_head_update(), resulting in the deletion being logged. Signed-off-by: Kyle Meyer <kyle@kyleam.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-17rev-parse: fix several options when running in a subdirectoryLibravatar Johannes Schindelin1-4/+11
In addition to making git_path() aware of certain file names that need to be handled differently e.g. when running in worktrees, the commit 557bd833bb (git_path(): be aware of file relocation in $GIT_DIR, 2014-11-30) also snuck in a new option for `git rev-parse`: `--git-path`. On the face of it, there is no obvious bug in that commit's diff: it faithfully calls git_path() on the argument and prints it out, i.e. `git rev-parse --git-path <filename>` has the same precise behavior as calling `git_path("<filename>")` in C. The problem lies deeper, much deeper. In hindsight (which is always unfair), implementing the .git/ directory discovery in `setup_git_directory()` by changing the working directory may have allowed us to avoid passing around a struct that contains information about the current repository, but it bought us many, many problems. In this case, when being called in a subdirectory, `git rev-parse` changes the working directory to the top-level directory before calling `git_path()`. In the new working directory, the result is correct. But in the working directory of the calling script, it is incorrect. Example: when calling `git rev-parse --git-path HEAD` in, say, the Documentation/ subdirectory of Git's own source code, the string `.git/HEAD` is printed. Side note: that bug is hidden when running in a subdirectory of a worktree that was added by the `git worktree` command: in that case, the (correct) absolute path of the `HEAD` file is printed. In the interest of time, this patch does not go the "correct" route to introduce a struct with repository information (and removing global state in the process), instead this patch chooses to detect when the command was called in a subdirectory and forces the result to be an absolute path. While at it, we are also fixing the output of --git-common-dir and --shared-index-path. Lastly, please note that we reuse the same strbuf for all of the relative_path() calls; this avoids frequent allocation (and duplicated code), and it does not risk memory leaks, for two reasons: 1) the cmd_rev_parse() function does not return anywhere between the use of the new strbuf instance and its final release, and 2) git-rev-parse is one of these "one-shot" programs in Git, i.e. it exits after running for a very short time, meaning that all allocated memory is released with the exit() call anyway. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-16Merge branch 'rs/strbuf-cleanup-in-rmdir-recursively'Libravatar Junio C Hamano1-3/+3
Code clean-up. * rs/strbuf-cleanup-in-rmdir-recursively: rm: reuse strbuf for all remove_dir_recursively() calls, again
2017-02-16Merge branch 'rs/ls-files-partial-optim'Libravatar Junio C Hamano1-10/+11
"ls-files" run with pathspec has been micro-optimized to avoid having to memmove(3) unnecessary bytes. * rs/ls-files-partial-optim: ls-files: move only kept cache entries in prune_cache() ls-files: pass prefix length explicitly to prune_cache()
2017-02-16clean: use warning_errno() when appropriateLibravatar Nguyễn Thái Ngọc Duy1-4/+12
All these warning() calls are preceded by a system call. Report the actual error to help the user understand why we fail to remove something. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-15show-branch: use skip_prefix to drop magic numbersLibravatar Jeff King1-11/+8
We make several starts_with() calls, only to advance pointers. This is exactly what skip_prefix() is for, which lets us avoid manually-counted magic numbers. Helped-by: Pranit Bauva <pranit.bauva@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-15Merge branch 'rs/swap'Libravatar Junio C Hamano2-9/+4
Code clean-up. * rs/swap: graph: use SWAP macro diff: use SWAP macro use SWAP macro apply: use SWAP macro add SWAP macro
2017-02-14grep: treat revs the same for --untracked as for --no-indexLibravatar Jeff King1-5/+5
git-grep has always disallowed grepping in a tree (as opposed to the working directory) with both --untracked and --no-index. But we traditionally did so by first collecting the revs, and then complaining when any were provided. The --no-index option recently learned to detect revs much earlier. This has two user-visible effects: - we don't bother to resolve revision names at all. So when there's a rev/path ambiguity, we always choose to treat it as a path. - likewise, when you do specify a revision without "--", the error you get is "no such path" and not "--untracked cannot be used with revs". The rationale for doing this with --no-index is that it is meant to be used outside a repository, and so parsing revs at all does not make sense. This patch gives --untracked the same treatment. While it _is_ meant to be used in a repository, it is explicitly about grepping the non-repository contents. Telling the user "we found a rev, but you are not allowed to use revs" is not really helpful compared to "we treated your argument as a path, and could not find it". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-14show-branch: store resolved head in heap bufferLibravatar Jeff King1-14/+5
We resolve HEAD and copy the result to a fixed-size buffer with memcpy, never checking that it actually fits. This bug dates back to 8098a178b (Add git-symbolic-ref, 2005-09-30). Before that we used readlink(), which took a maximum buffer size. We can fix this by using resolve_refdup(), which duplicates the buffer on the heap. That also lets us just check for a NULL pointer to see if we have resolved HEAD, and drop the extra head_p variable. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-14show-branch: drop head_len variableLibravatar Jeff King1-6/+2
We copy the result of resolving HEAD into a buffer and keep track of its length. But we never actually use the length for anything besides the copy. Let's stop passing it around. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>