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2019-10-03push: add trace2 instrumentationLibravatar Josh Steadmon1-0/+2
Add trace2 regions in transport.c and builtin/push.c to better track time spent in various phases of pushing: * Listing refs * Checking submodules * Pushing submodules * Pushing refs Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-10-03fetch: add trace2 instrumentationLibravatar Josh Steadmon1-7/+15
Add trace2 regions to fetch-pack.c and builtins/fetch.c to better track time spent in the various phases of a fetch: * listing refs * negotiation for protocol versions v0-v2 * fetching refs * consuming refs Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-30Merge branch 'ds/commit-graph-on-fetch'Libravatar Junio C Hamano1-0/+15
A configuration variable tells "git fetch" to write the commit graph after finishing. * ds/commit-graph-on-fetch: fetch: add fetch.writeCommitGraph config setting
2019-09-30Merge branch 'bw/rebase-autostash-keep-current-branch'Libravatar Junio C Hamano1-12/+1
"git rebase --autostash <upstream> <branch>", when <branch> is different from the current branch, incorrectly moved the tip of the current branch, which has been corrected. * bw/rebase-autostash-keep-current-branch: builtin/rebase.c: Remove pointless message builtin/rebase.c: make sure the active branch isn't moved when autostashing
2019-09-30Merge branch 'ds/include-exclude'Libravatar Junio C Hamano3-27/+27
The internal code originally invented for ".gitignore" processing got reshuffled and renamed to make it less tied to "excluding" and stress more that it is about "matching", as it has been reused for things like sparse checkout specification that want to check if a path is "included". * ds/include-exclude: unpack-trees: rename 'is_excluded_from_list()' treewide: rename 'exclude' methods to 'pattern' treewide: rename 'EXCL_FLAG_' to 'PATTERN_FLAG_' treewide: rename 'struct exclude_list' to 'struct pattern_list' treewide: rename 'struct exclude' to 'struct path_pattern'
2019-09-30Merge branch 'dl/rebase-i-keep-base'Libravatar Junio C Hamano1-22/+62
"git rebase --keep-base <upstream>" tries to find the original base of the topic being rebased and rebase on top of that same base, which is useful when running the "git rebase -i" (and its limited variant "git rebase -x"). The command also has learned to fast-forward in more cases where it can instead of replaying to recreate identical commits. * dl/rebase-i-keep-base: rebase: teach rebase --keep-base rebase tests: test linear branch topology rebase: fast-forward --fork-point in more cases rebase: fast-forward --onto in more cases rebase: refactor can_fast_forward into goto tower t3432: test for --no-ff's interaction with fast-forward t3432: distinguish "noop-same" v.s. "work-same" in "same head" tests t3432: test rebase fast-forward behavior t3431: add rebase --fork-point tests
2019-09-30Merge branch 'jk/misc-uninitialized-fixes'Libravatar Junio C Hamano2-20/+17
Various fixes to codepaths gcc 9 had trouble following dataflow. * jk/misc-uninitialized-fixes: pack-objects: drop packlist index_pos optimization test-read-cache: drop namelen variable diff-delta: set size out-parameter to 0 for NULL delta bulk-checkin: zero-initialize hashfile_checkpoint pack-objects: use object_id in packlist_alloc() git-am: handle missing "author" when parsing commit
2019-09-30Merge branch 'rs/get-tagged-oid'Libravatar Junio C Hamano3-4/+5
Code cleanup. * rs/get-tagged-oid: use get_tagged_oid() tag: factor out get_tagged_oid()
2019-09-30Merge branch 'tg/push-all-in-mirror-forbidden'Libravatar Junio C Hamano1-33/+36
Fix an earlier regression to "git push --all" which should have been forbidden when the target remote repository is set to be a mirror. * tg/push-all-in-mirror-forbidden: push: disallow --all and refspecs when remote.<name>.mirror is set
2019-09-30Merge branch 'nd/switch-and-restore'Libravatar Junio C Hamano1-0/+9
Resurrect a performance hack. * nd/switch-and-restore: checkout: add simple check for 'git checkout -b'
2019-09-30Merge branch 'rs/strbuf-detach'Libravatar Junio C Hamano1-2/+2
Straighten out the use of strbuf_detach() API function. * rs/strbuf-detach: grep: use return value of strbuf_detach() log-tree: always use return value of strbuf_detach()
2019-09-18Merge branch 'md/list-objects-filter-combo'Libravatar Junio C Hamano3-13/+10
The list-objects-filter API (used to create a sparse/lazy clone) learned to take a combined filter specification. * md/list-objects-filter-combo: list-objects-filter-options: make parser void list-objects-filter-options: clean up use of ALLOC_GROW list-objects-filter-options: allow mult. --filter strbuf: give URL-encoding API a char predicate fn list-objects-filter-options: make filter_spec a string_list list-objects-filter-options: move error check up list-objects-filter: implement composite filters list-objects-filter-options: always supply *errbuf list-objects-filter: put omits set in filter struct list-objects-filter: encapsulate filter components
2019-09-18Merge branch 'cc/multi-promisor'Libravatar Junio C Hamano5-27/+21
Teach the lazy clone machinery that there can be more than one promisor remote and consult them in order when downloading missing objects on demand. * cc/multi-promisor: Move core_partial_clone_filter_default to promisor-remote.c Move repository_format_partial_clone to promisor-remote.c Remove fetch-object.{c,h} in favor of promisor-remote.{c,h} remote: add promisor and partial clone config to the doc partial-clone: add multiple remotes in the doc t0410: test fetching from many promisor remotes builtin/fetch: remove unique promisor remote limitation promisor-remote: parse remote.*.partialclonefilter Use promisor_remote_get_direct() and has_promisor_remote() promisor-remote: use repository_format_partial_clone promisor-remote: add promisor_remote_reinit() promisor-remote: implement promisor_remote_get_direct() Add initial support for many promisor remotes fetch-object: make functions return an error code t0410: remove pipes after git commands
2019-09-18Merge branch 'js/pre-merge-commit-hook'Libravatar Junio C Hamano1-3/+15
A new "pre-merge-commit" hook has been introduced. * js/pre-merge-commit-hook: merge: --no-verify to bypass pre-merge-commit hook git-merge: honor pre-merge-commit hook merge: do no-verify like commit t7503: verify proper hook execution
2019-09-18Merge branch 'jk/drop-release-pack-memory'Libravatar Junio C Hamano1-11/+0
xmalloc() used to have a mechanism to ditch memory and address space resources as the last resort upon seeing an allocation failure from the underlying malloc(), which made the code complex and thread-unsafe with dubious benefit, as major memory resource users already do limit their uses with various other mechanisms. It has been simplified away. * jk/drop-release-pack-memory: packfile: drop release_pack_memory()
2019-09-18Merge branch 'js/rebase-r-strategy'Libravatar Junio C Hamano1-11/+5
"git rebase --rebase-merges" learned to drive different merge strategies and pass strategy specific options to them. * js/rebase-r-strategy: t3427: accelerate this test by using fast-export and fast-import rebase -r: do not (re-)generate root commits with `--root` *and* `--onto` t3418: test `rebase -r` with merge strategies t/lib-rebase: prepare for testing `git rebase --rebase-merges` rebase -r: support merge strategies other than `recursive` t3427: fix another incorrect assumption t3427: accommodate for the `rebase --merge` backend having been replaced t3427: fix erroneous assumption t3427: condense the unnecessarily repetitive test cases into three t3427: move the `filter-branch` invocation into the `setup` case t3427: simplify the `setup` test case significantly t3427: add a clarifying comment rebase: fold git-rebase--common into the -p backend sequencer: the `am` and `rebase--interactive` scripts are gone .gitignore: there is no longer a built-in `git-rebase--interactive` t3400: stop referring to the scripted rebase Drop unused git-rebase--am.sh
2019-09-09Merge branch 'cb/fetch-set-upstream'Libravatar Junio C Hamano2-1/+56
"git fetch" learned "--set-upstream" option to help those who first clone from their private fork they intend to push to, add the true upstream via "git remote add" and then "git fetch" from it. * cb/fetch-set-upstream: pull, fetch: add --set-upstream option
2019-09-09Merge branch 'en/checkout-mismerge-fix'Libravatar Junio C Hamano1-7/+0
Fix a mismerge that happened in 2.22 timeframe. * en/checkout-mismerge-fix: checkout: remove duplicate code
2019-09-09Merge branch 'ds/feature-macros'Libravatar Junio C Hamano3-13/+13
A mechanism to affect the default setting for a (related) group of configuration variables is introduced. * ds/feature-macros: repo-settings: create feature.experimental setting repo-settings: create feature.manyFiles setting repo-settings: parse core.untrackedCache commit-graph: turn on commit-graph by default t6501: use 'git gc' in quiet mode repo-settings: consolidate some config settings
2019-09-07builtin/rebase.c: Remove pointless messageLibravatar Ben Wijen1-15/+1
When doing 'git rebase --autostash <upstream> <master>' with a dirty worktree a 'HEAD is now at ...' message is emitted, which is pointless as it refers to the old active branch which isn't actually moved. This commit removes the 'HEAD is now at...' message. Signed-off-by: Ben Wijen <ben@wijen.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-07builtin/rebase.c: make sure the active branch isn't moved when autostashingLibravatar Ben Wijen1-3/+6
Consider the following scenario: git checkout not-the-master work work work git rebase --autostash upstream master Here 'rebase --autostash <upstream> <branch>' incorrectly moves the active branch (not-the-master) to master (before the rebase). The expected behavior: (58794775:/git-rebase.sh:526) AUTOSTASH=$(git stash create autostash) git reset --hard git checkout master git rebase upstream git stash apply $AUTOSTASH The actual behavior: (6defce2b:/builtin/rebase.c:1062) AUTOSTASH=$(git stash create autostash) git reset --hard master git checkout master git rebase upstream git stash apply $AUTOSTASH This commit reinstates the 'legacy script' behavior as introduced with 58794775: rebase: implement --[no-]autostash and rebase.autostash Signed-off-by: Ben Wijen <ben@wijen.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-06pack-objects: drop packlist index_pos optimizationLibravatar Jeff King1-19/+14
Once upon a time, the code to add an object to our packing list in pack-objects all lived in a single function. It computed the position within the hash table once, then used it to check if the object was already present, and if not, to add it. Later, in 2834bc27c1 (pack-objects: refactor the packing list, 2013-10-24), this was split into two functions: packlist_find() and packlist_alloc(). We ended up with an "index_pos" variable that gets passed through several functions to make it from one to the other. The resulting code is rather confusing to follow. The "index_pos" variable is sometimes undefined, if we don't yet have a hash table. This works out in practice because in that case packlist_alloc() won't use it at all, since it will have to create/grow the hash table. But it's hard to verify that, and it does cause gcc 9.2.1's -Wmaybe-uninitialized to complain when compiled with "-flto -O3" (rightfully, since we do pass the uninitialized value as a function parameter, even if nobody ends up using it). All of this is to save computing the hash index again when we're inserting into the hash table, which I found doesn't make a measurable difference in the program runtime (which is not surprising, since we're doing all kinds of other heavyweight things for each object). Let's just drop this index_pos variable entirely, simplifying the code (and pleasing the compiler). We might be better still refactoring this custom hash table to use one of our existing implementations (an oidmap, or a kh_oid_map). I stopped short of that here, but this would be the likely first step towards that anyway. Reported-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-06pack-objects: use object_id in packlist_alloc()Libravatar Jeff King1-1/+1
The only caller of packlist_alloc() already has a "struct object_id", and we immediately copy the hash they pass us into our own object_id. Let's avoid the unnecessary round-trip to a raw sha1 pointer. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-06git-am: handle missing "author" when parsing commitLibravatar Jeff King1-1/+3
We try to parse the "author" line out of a commit buffer. We handle the case that split_ident_line() doesn't work, but we don't do any error checking that we found an "author" line in the first place! This would cause us to segfault on such a corrupt object. Let's put in an explicit NULL check (we can just die(), which is what a bogus split would do, too). As a bonus, this silences a warning when compiling with gcc 9.2.1 using "-flto -O3", which claims that ident_len may be uninitialized (it would only be if we had a NULL here). Reported-by: Stephan Beyer <s-beyer@gmx.net> Helped-by: René Scharfe <l.s.r@web.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05use get_tagged_oid()Libravatar René Scharfe3-4/+5
Avoid derefencing ->tagged without checking for NULL by using the convenience wrapper for getting the ID of the tagged object. It die()s when encountering a broken tag instead of segfaulting. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05treewide: rename 'exclude' methods to 'pattern'Libravatar Derrick Stolee3-8/+8
The first consumer of pattern-matching filenames was the .gitignore feature. In that context, storing a list of patterns as a 'struct exclude_list' makes sense. However, the sparse-checkout feature then adopted these structures and methods, but with the opposite meaning: these patterns match the files that should be included! It would be clearer to rename this entire library as a "pattern matching" library, and the callers apply exclusion/inclusion logic accordingly based on their needs. This commit renames several methods defined in dir.h to make more sense with the renamed 'struct exclude_list' to 'struct pattern_list' and 'struct exclude' to 'struct path_pattern': * last_exclude_matching() -> last_matching_pattern() * parse_exclude() -> parse_path_pattern() In addition, the word 'exclude' was replaced with 'pattern' in the methods below: * add_exclude_list() * add_excludes_from_file_to_list() * add_excludes_from_file() * add_excludes_from_blob_to_list() * add_exclude() * clear_exclude_list() A few methods with the word "exclude" remain. These will be handled seperately. In particular, the method "is_excluded()" is concretely about the .gitignore file relative to a specific directory. This is the important boundary between library and consumer: is_excluded() cares about .gitignore, but is_excluded() calls last_matching_pattern() to make that decision. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05treewide: rename 'EXCL_FLAG_' to 'PATTERN_FLAG_'Libravatar Derrick Stolee1-2/+2
The first consumer of pattern-matching filenames was the .gitignore feature. In that context, storing a list of patterns as a 'struct exclude_list' makes sense. However, the sparse-checkout feature then adopted these structures and methods, but with the opposite meaning: these patterns match the files that should be included! It would be clearer to rename this entire library as a "pattern matching" library, and the callers apply exclusion/inclusion logic accordingly based on their needs. This commit replaces 'EXCL_FLAG_' to 'PATTERN_FLAG_' in the names of the flags used on 'struct path_pattern'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05treewide: rename 'struct exclude_list' to 'struct pattern_list'Libravatar Derrick Stolee3-11/+11
The first consumer of pattern-matching filenames was the .gitignore feature. In that context, storing a list of patterns as a 'struct exclude_list' makes sense. However, the sparse-checkout feature then adopted these structures and methods, but with the opposite meaning: these patterns match the files that should be included! It would be clearer to rename this entire library as a "pattern matching" library, and the callers apply exclusion/inclusion logic accordingly based on their needs. This commit renames 'struct exclude_list' to 'struct pattern_list' and renames several variables called 'el' to 'pl'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-05treewide: rename 'struct exclude' to 'struct path_pattern'Libravatar Derrick Stolee1-17/+17
The first consumer of pattern-matching filenames was the .gitignore feature. In that context, storing a list of patterns as a list of 'struct exclude' items makes sense. However, the sparse-checkout feature then adopted these structures and methods, but with the opposite meaning: these patterns match the files that should be included! It would be clearer to rename this entire library as a "pattern matching" library, and the callers apply exclusion/inclusion logic accordingly based on their needs. This commit renames 'struct exclude' to 'struct path_pattern' and renames several variable names to match. 'struct pattern' was already taken by attr.c, and this more completely describes that the patterns are specific to file paths. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-03fetch: add fetch.writeCommitGraph config settingLibravatar Derrick Stolee1-0/+15
The commit-graph feature is now on by default, and is being written during 'git gc' by default. Typically, Git only writes a commit-graph when a 'git gc --auto' command passes the gc.auto setting to actualy do work. This means that a commit-graph will typically fall behind the commits that are being used every day. To stay updated with the latest commits, add a step to 'git fetch' to write a commit-graph after fetching new objects. The fetch.writeCommitGraph config setting enables writing a split commit-graph, so on average the cost of writing this file is very small. Occasionally, the commit-graph chain will collapse to a single level, and this could be slow for very large repos. For additional use, adjust the default to be true when feature.experimental is enabled. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-09-03push: disallow --all and refspecs when remote.<name>.mirror is setLibravatar Thomas Gummerer1-33/+36
Pushes with --all, or refspecs are disallowed when --mirror is given to 'git push', or when 'remote.<name>.mirror' is set in the config of the repository, because they can have surprising effects. 800a4ab399 ("push: check for errors earlier", 2018-05-16) refactored this code to do that check earlier, so we can explicitly check for the presence of flags, instead of their sideeffects. However when 'remote.<name>.mirror' is set in the config, the TRANSPORT_PUSH_MIRROR flag would only be set after we calling 'do_push()', so the checks would miss it entirely. This leads to surprises for users [*1*]. Fix this by making sure we set the flag (if appropriate) before checking for compatibility of the various options. *1*: https://twitter.com/FiloSottile/status/1163918701462249472 Reported-by: Filippo Valsorda <filippo@ml.filippo.io> Helped-by: Saleem Rashid Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-30checkout: add simple check for 'git checkout -b'Libravatar Derrick Stolee1-0/+9
The 'git switch' command was created to separate half of the behavior of 'git checkout'. It specifically has the mode to do nothing with the index and working directory if the user only specifies to create a new branch and change HEAD to that branch. This is also the behavior most users expect from 'git checkout -b', but for historical reasons it also performs an index update by scanning the working directory. This can be slow for even moderately-sized repos. A performance fix for 'git checkout -b' was introduced by fa655d8411 (checkout: optimize "git checkout -b <new_branch>" 2018-08-16). That change includes details about the config setting checkout.optimizeNewBranch when the sparse-checkout feature is required. The way this change detected if this behavior change is safe was through the skip_merge_working_tree() method. This method was complex and needed to be updated as new options were introduced. This behavior was essentially reverted by 65f099b ("switch: no worktree status unless real branch switch happens" 2019-03-29). Instead, two members of the checkout_opts struct were used to distinguish between 'git checkout' and 'git switch': * switch_branch_doing_nothing_is_ok * only_merge_on_switching_branches These settings have opposite values depending on if we start in cmd_checkout or cmd_switch. The message for 64f099b includes "Users of big repos are encouraged to move to switch." Making this change while 'git switch' is still experimental is too aggressive. Create a happy medium between these two options by making 'git checkout -b <branch>' behave just like 'git switch', but only if we read exactly those arguments. This must be done in cmd_checkout to avoid the arguments being consumed by the option parsing logic. This differs from the previous change by fa644d8 in that the config option checkout.optimizeNewBranch remains deleted. This means that 'git checkout -b' will ignore the index merge even if we have a sparse-checkout file. While this is a behavior change for 'git checkout -b', it matches the behavior of 'git switch -c'. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Acked-by: Elijah Newren <newren@gmail.com> Acked-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-27rebase: teach rebase --keep-baseLibravatar Denton Liu1-6/+26
A common scenario is if a user is working on a topic branch and they wish to make some changes to intermediate commits or autosquash, they would run something such as git rebase -i --onto master... master in order to preserve the merge base. This is useful when contributing a patch series to the Git mailing list, one often starts on top of the current 'master'. While developing the patches, 'master' is also developed further and it is sometimes not the best idea to keep rebasing on top of 'master', but to keep the base commit as-is. In addition to this, a user wishing to test individual commits in a topic branch without changing anything may run git rebase -x ./test.sh master... master Since rebasing onto the merge base of the branch and the upstream is such a common case, introduce the --keep-base option as a shortcut. This allows us to rewrite the above as git rebase -i --keep-base master and git rebase -x ./test.sh --keep-base master respectively. Add tests to ensure --keep-base works correctly in the normal case and fails when there are multiple merge bases, both in regular and interactive mode. Also, test to make sure conflicting options cause rebase to fail. While we're adding test cases, add a missing set_fake_editor call to 'rebase -i --onto master...side'. While we're documenting the --keep-base option, change an instance of "merge-base" to "merge base", which is the consistent spelling. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: Junio C Hamano <gitster@pobox.com> Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-27rebase: fast-forward --fork-point in more casesLibravatar Denton Liu1-3/+7
Before, when we rebased with a --fork-point invocation where the fork-point wasn't empty, we would be setting options.restrict_revision. The fast-forward logic would automatically declare that the rebase was not fast-forwardable if it was set. However, this was painting with a very broad brush. Refine the logic so that we can fast-forward in the case where the restricted revision is equal to the merge base, since we stop rebasing at the merge base anyway. Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-27rebase: fast-forward --onto in more casesLibravatar Denton Liu1-8/+19
Before, when we had the following graph, A---B---C (master) \ D (side) running 'git rebase --onto master... master side' would result in D being always rebased, no matter what. However, the desired behavior is that rebase should notice that this is fast-forwardable and do that instead. Add detection to `can_fast_forward` so that this case can be detected and a fast-forward will be performed. First of all, rewrite the function to use gotos which simplifies the logic. Next, since the options.upstream && !oidcmp(&options.upstream->object.oid, &options.onto->object.oid) conditions were removed in `cmd_rebase`, we reintroduce a substitute in `can_fast_forward`. In particular, checking the merge bases of `upstream` and `head` fixes a failing case in t3416. The abbreviated graph for t3416 is as follows: F---G topic / A---B---C---D---E master and the failing command was git rebase --onto master...topic F topic Before, Git would see that there was one merge base (C), and the merge and onto were the same so it would incorrectly return 1, indicating that we could fast-forward. This would cause the rebased graph to be 'ABCFG' when we were expecting 'ABCG'. With the additional logic, we detect that upstream and head's merge base is F. Since onto isn't F, it means we're not rebasing the full set of commits from master..topic. Since we're excluding some commits, a fast-forward cannot be performed and so we correctly return 0. Add '-f' to test cases that failed as a result of this change because they were not expecting a fast-forward so that a rebase is forced. Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-27rebase: refactor can_fast_forward into goto towerLibravatar Denton Liu1-8/+13
Before, can_fast_forward was written with an if-else statement. However, in the future, we may be adding more termination cases which would lead to deeply nested if statements. Refactor to use a goto tower so that future cases can be easily inserted. Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-26grep: use return value of strbuf_detach()Libravatar René Scharfe1-2/+2
Append the strbuf buffer only after detaching it. There is no practical difference here, as the strbuf is not empty and no strbuf_ function is called between storing the pointer to the still attached buffer and calling strbuf_detach(), so that pointer is valid, but make sure to follow the standard sequence anyway for consistency. Signed-off-by: René Scharfe <l.s.r@web.de> Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-22Merge branch 'sg/worktree-remove-errormsg'Libravatar Junio C Hamano1-1/+1
Error message update/clarification. * sg/worktree-remove-errormsg: worktree remove: clarify error message on dirty worktree
2019-08-22Merge branch 'sg/commit-graph-validate'Libravatar Junio C Hamano2-5/+7
The code to write commit-graph over given commit object names has been made a bit more robust. * sg/commit-graph-validate: commit-graph: error out on invalid commit oids in 'write --stdin-commits' commit-graph: turn a group of write-related macro flags into an enum t5318-commit-graph: use 'test_expect_code'
2019-08-22Merge branch 'vn/restore-empty-ita-corner-case-fix'Libravatar Junio C Hamano1-0/+1
"git checkout" and "git restore" to re-populate the index from a tree-ish (typically HEAD) did not work correctly for a path that was removed and then added again with the intent-to-add bit, when the corresponding working tree file was empty. This has been corrected. * vn/restore-empty-ita-corner-case-fix: restore: add test for deleted ita files checkout.c: unstage empty deleted ita files
2019-08-22Merge branch 'jk/tree-walk-overflow'Libravatar Junio C Hamano1-2/+3
Codepaths to walk tree objects have been audited for integer overflows and hardened. * jk/tree-walk-overflow: tree-walk: harden make_traverse_path() length computations tree-walk: add a strbuf wrapper for make_traverse_path() tree-walk: accept a raw length for traverse_path_len() tree-walk: use size_t consistently tree-walk: drop oid from traverse_info setup_traverse_info(): stop copying oid
2019-08-22Merge branch 'mt/grep-submodules-working-tree'Libravatar Junio C Hamano1-4/+6
"git grep --recurse-submodules" that looks at the working tree files looked at the contents in the index in submodules, instead of files in the working tree. * mt/grep-submodules-working-tree: grep: fix worktree case in submodules
2019-08-19pull, fetch: add --set-upstream optionLibravatar Corentin BOMPARD2-1/+56
Add the --set-upstream option to git pull/fetch which lets the user set the upstream configuration (branch.<current-branch-name>.merge and branch.<current-branch-name>.remote) for the current branch. A typical use-case is: git clone http://example.com/my-public-fork git remote add main http://example.com/project-main-repo git pull --set-upstream main master or, instead of the last line: git fetch --set-upstream main master git merge # or git rebase This is mostly equivalent to cloning project-main-repo (which sets upsteam) and then "git remote add" my-public-fork, but may feel more natural for people using a hosting system which allows forking from the web UI. This functionality is analog to "git push --set-upstream". Signed-off-by: Corentin BOMPARD <corentin.bompard@etu.univ-lyon1.fr> Signed-off-by: Nathan BERBEZIER <nathan.berbezier@etu.univ-lyon1.fr> Signed-off-by: Pablo CHABANNE <pablo.chabanne@etu.univ-lyon1.fr> Signed-off-by: Matthieu Moy <git@matthieu-moy.fr> Patch-edited-by: Matthieu Moy <git@matthieu-moy.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-16checkout: remove duplicate codeLibravatar Elijah Newren1-7/+0
Both commit a7256debd4b6 ("checkout.txt: note about losing staged changes with --merge", 2019-03-19) from nd/checkout-m-doc-update and commit 6eff409e8a76 ("checkout: prevent losing staged changes with --merge", 2019-03-22) from nd/checkout-m were included in git.git despite the fact that the latter was meant to be v2 of the former. The merge of these two topics resulted in a redundant chunk of code; remove it. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-13repo-settings: parse core.untrackedCacheLibravatar Derrick Stolee1-2/+4
The core.untrackedCache config setting is slightly complicated, so clarify its use and centralize its parsing into the repo settings. The default value is "keep" (returned as -1), which persists the untracked cache if it exists. If the value is set as "false" (returned as 0), then remove the untracked cache if it exists. If the value is set as "true" (returned as 1), then write the untracked cache and persist it. Instead of relying on magic values of -1, 0, and 1, split these options into an enum. This allows the use of "-1" as a default value. After parsing the config options, if the value is unset we can initialize it to UNTRACKED_CACHE_KEEP. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-13repo-settings: consolidate some config settingsLibravatar Derrick Stolee2-11/+9
There are a few important config settings that are not loaded during git_default_config. These are instead loaded on-demand. Centralize these config options to a single scan, and store all of the values in a repo_settings struct. The values for each setting are initialized as negative to indicate "unset". This centralization will be particularly important in a later change to introduce "meta" config settings that change the defaults for these config settings. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-13worktree remove: clarify error message on dirty worktreeLibravatar SZEDER Gábor1-1/+1
To avoid data loss, 'git worktree remove' refuses to delete a worktree if it's dirty or contains untracked files. However, the error message only mentions that the worktree "is dirty", even if the worktree in question is in fact clean, but contains untracked files: $ git worktree add test-worktree Preparing worktree (new branch 'test-worktree') HEAD is now at aa53e60 Initial $ >test-worktree/untracked-file $ git worktree remove test-worktree/ fatal: 'test-worktree/' is dirty, use --force to delete it $ git -C test-worktree/ diff $ git -C test-worktree/ diff --cached $ # Huh? Where are those dirty files?! Clarify this error message to say that the worktree "contains modified or untracked files". Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-13packfile: drop release_pack_memory()Libravatar Jeff King1-11/+0
Long ago, in 97bfeb34df (Release pack windows before reporting out of memory., 2006-12-24), we taught xmalloc() and friends to try unmapping pack windows when malloc() failed. It's unlikely that his helps a lot in practice, and it has some downsides. First, the downsides: 1. It makes xmalloc() not thread-safe. We've worked around this in pack-objects.c, which installs its own locking version of the try_to_free_routine(). But other threaded code doesn't. 2. It makes the system as a whole harder to reason about. Functions which allocate heap memory under the hood may have farther-reaching effects than expected. That might be worth the tradeoff if there's a benefit. But in practice, it seems unlikely. We're generally dealing with mmap'd files, so the OS is going to do a much better job at responding to memory pressure by dropping individual pages (the exception is systems with NO_MMAP, but even there the OS can probably respond just as well with swapping). So the only thing we're really freeing is address space. On 64-bit systems, we have plenty of that to go around. On 32-bit systems, it could possibly help. But around the same time we made two other changes: 77ccc5bbd1 (Introduce new config option for mmap limit., 2006-12-23) and 60bb8b1453 (Fully activate the sliding window pack access., 2006-12-23). Together that means that a 32-bit system should have no more than 256MB total of packed-git mmaps at one time, split between a few 32MB windows. It's unlikely we have any address space problems since then, but we don't have any data since the features were all added at the same time. Likewise, xmmap() will try to free memory. At first glance, it seems like we'd need this (when we try to mmap a new window, we might need to close an old one to save address space on a 32-bit system). But we're saved again by core.packedGitLimit: if we're going to exceed our 256MB limit, we'll close an existing window before we even call mmap(). So it seems unlikely that this feature is actually doing anything useful. And while we don't have reports of it harming anything (probably because it rarely if ever kicks in), it would be nice to simplify the system overall. This patch drops the whole try_to_free system from xmalloc(), as well as the manual pack memory release in xmmap(). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-07merge: --no-verify to bypass pre-merge-commit hookLibravatar Michael J Gruber1-2/+2
Analogous to commit, introduce a '--no-verify' option which bypasses the pre-merge-commit hook. The shorthand '-n' is taken by '--no-stat' already. [js: * reworded commit message to reflect current state of --no-stat flag and new hook name * fixed flag documentation to reflect new hook name * cleaned up trailing whitespace * squashed test changes from the original series' patch 4/4 * modified tests to follow pattern from this series' patch 1/4 * added a test case for --no-verify with non-executable hook * when testing that the merge hook did not run, make sure we actually have a merge to perform (by resetting the "side" branch to its original state). ] Improved-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Michael J Gruber <git@grubix.eu> Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-08-07git-merge: honor pre-merge-commit hookLibravatar Michael J Gruber1-0/+12
git-merge does not honor the pre-commit hook when doing automatic merge commits, and for compatibility reasons this is going to stay. Introduce a pre-merge-commit hook which is called for an automatic merge commit just like pre-commit is called for a non-automatic merge commit (or any other commit). [js: * renamed hook from "pre-merge" to "pre-merge-commit" * only discard the index if the hook is actually present * expanded githooks documentation entry * clarified that hook should write messages to stderr * squashed test changes from the original series' patch 4/4 * modified tests to follow new pattern from this series' patch 1/4 * added a test case for non-executable merge hooks * added a test case for failed merges * when testing that the merge hook did not run, make sure we actually have a merge to perform (by resetting the "side" branch to its original state). * reworded commit message ] Improved-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Michael J Gruber <git@grubix.eu> Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Josh Steadmon <steadmon@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>