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2018-10-19Merge branch 'tb/filter-alternate-refs'Libravatar Junio C Hamano1-0/+41
When pushing into a repository that borrows its objects from an alternate object store, "git receive-pack" that responds to the push request on the other side lists the tips of refs in the alternate to reduce the amount of objects transferred. This sometimes is detrimental when the number of refs in the alternate is absurdly large, in which case the bandwidth saved in potentially fewer objects transferred is wasted in excessively large ref advertisement. The alternate refs that are advertised are now configurable with a pair of configuration variables. * tb/filter-alternate-refs: transport.c: introduce core.alternateRefsPrefixes transport.c: introduce core.alternateRefsCommand transport.c: extract 'fill_alternate_refs_command' transport: drop refnames from for_each_alternate_ref
2018-10-19Merge branch 'jt/avoid-ls-refs'Libravatar Junio C Hamano2-0/+32
Over some transports, fetching objects with an exact commit object name can be done without first seeing the ref advertisements. The code has been optimized to exploit this. * jt/avoid-ls-refs: fetch: do not list refs if fetching only hashes transport: list refs before fetch if necessary transport: do not list refs if possible transport: allow skipping of ref listing
2018-10-19Merge branch 'jt/non-blob-lazy-fetch'Libravatar Junio C Hamano1-0/+41
A partial clone that is configured to lazily fetch missing objects will on-demand issue a "git fetch" request to the originating repository to fill not-yet-obtained objects. The request has been optimized for requesting a tree object (and not the leaf blob objects contained in it) by telling the originating repository that no blobs are needed. * jt/non-blob-lazy-fetch: fetch-pack: exclude blobs when lazy-fetching trees fetch-pack: avoid object flags if no_dependents
2018-10-19Merge branch 'rs/grep-no-recursive'Libravatar Junio C Hamano1-0/+12
Unlike "grep", "git grep" by default recurses to the whole tree. The command learned "git grep --recursive" option, so that "git grep --no-recursive" can serve as a synonym to setting the max-depth to 0. * rs/grep-no-recursive: grep: add -r/--[no-]recursive
2018-10-19Merge branch 'nd/help-commands-verbose-by-default'Libravatar Junio C Hamano1-2/+2
"git help -a" and "git help -av" give different pieces of information, and generally the "verbose" version is more friendly to the new users. "git help -a" by default now uses the more verbose output (with "--no-verbose", you can go back to the original). Also "git help -av" now lists aliases and external commands, which it did not used to. * nd/help-commands-verbose-by-default: help -a: improve and make --verbose default
2018-10-19Merge branch 'sm/show-superproject-while-conflicted'Libravatar Junio C Hamano1-0/+16
A corner-case bugfix. * sm/show-superproject-while-conflicted: rev-parse: --show-superproject-working-tree should work during a merge
2018-10-19Merge branch 'jt/fetch-tips-in-partial-clone'Libravatar Junio C Hamano1-0/+17
"git fetch $repo $object" in a partial clone did not correctly fetch the asked-for object that is referenced by an object in promisor packfile, which has been fixed. * jt/fetch-tips-in-partial-clone: fetch: in partial clone, check presence of targets connected: document connectivity in partial clones
2018-10-19Merge branch 'bp/read-cache-parallel'Libravatar Junio C Hamano2-4/+14
A new extension to the index file has been introduced, which allows the file to be read in parallel. * bp/read-cache-parallel: read-cache: load cache entries on worker threads ieot: add Index Entry Offset Table (IEOT) extension read-cache: load cache extensions on a worker thread config: add new index.threads config setting eoie: add End of Index Entry (EOIE) extension read-cache: clean up casting and byte decoding read-cache.c: optimize reading index format v4
2018-10-19Merge branch 'bp/rename-test-env-var'Libravatar Junio C Hamano5-13/+52
Some environment variables that control the runtime options of Git used during tests are getting renamed for consistency. * bp/rename-test-env-var: t0000: do not get self-test disrupted by environment warnings preload-index: update GIT_FORCE_PRELOAD_TEST support read-cache: update TEST_GIT_INDEX_VERSION support fsmonitor: update GIT_TEST_FSMONITOR support preload-index: use git_env_bool() not getenv() for customization t/README: correct spelling of "uncommon"
2018-10-19Merge branch 'ss/wt-status-committable'Libravatar Junio C Hamano1-2/+8
Code clean-up in the internal machinery used by "git status" and "git commit --dry-run". * ss/wt-status-committable: roll wt_status_state into wt_status and populate in the collect phase wt-status.c: set the committable flag in the collect phase t7501: add test of "commit --dry-run --short" wt-status: rename commitable to committable wt-status.c: move has_unmerged earlier in the file
2018-10-19Merge branch 'nd/the-index'Libravatar Junio C Hamano1-1/+1
Various codepaths in the core-ish part learn to work on an arbitrary in-core index structure, not necessarily the default instance "the_index". * nd/the-index: (23 commits) revision.c: reduce implicit dependency the_repository revision.c: remove implicit dependency on the_index ws.c: remove implicit dependency on the_index tree-diff.c: remove implicit dependency on the_index submodule.c: remove implicit dependency on the_index line-range.c: remove implicit dependency on the_index userdiff.c: remove implicit dependency on the_index rerere.c: remove implicit dependency on the_index sha1-file.c: remove implicit dependency on the_index patch-ids.c: remove implicit dependency on the_index merge.c: remove implicit dependency on the_index merge-blobs.c: remove implicit dependency on the_index ll-merge.c: remove implicit dependency on the_index diff-lib.c: remove implicit dependency on the_index read-cache.c: remove implicit dependency on the_index diff.c: remove implicit dependency on the_index grep.c: remove implicit dependency on the_index diff.c: remove the_index dependency in textconv() functions blame.c: rename "repo" argument to "r" combine-diff.c: remove implicit dependency on the_index ...
2018-10-16Merge branch 'ma/t1400-undebug-test'Libravatar Junio C Hamano1-1/+1
Test fix. * ma/t1400-undebug-test: t1400: drop debug `echo` to actually execute `test`
2018-10-16Merge branch 'en/status-multiple-renames-to-the-same-target-fix'Libravatar Junio C Hamano1-0/+23
The code in "git status" sometimes hit an assertion failure. This was caused by a structure that was reused without cleaning the data used for the first run, which has been corrected. * en/status-multiple-renames-to-the-same-target-fix: commit: fix erroneous BUG, 'multiple renames on the same target? how?'
2018-10-16Merge branch 'jn/gc-auto'Libravatar Junio C Hamano1-3/+3
"gc --auto" ended up calling exit(-1) upon error, which has been corrected to use exit(1). Also the error reporting behaviour when daemonized has been updated to exit with zero status when stopping due to a previously discovered error (which implies there is no point running gc to improve the situation); we used to exit with failure in such a case. * jn/gc-auto: gc: do not return error for prior errors in daemonized mode
2018-10-16Merge branch 'jn/gc-auto-prep'Libravatar Junio C Hamano1-1/+1
Code clean-up. * jn/gc-auto-prep: gc: exit with status 128 on failure gc: improve handling of errors reading gc.log
2018-10-16Merge branch 'md/test-cleanup'Libravatar Junio C Hamano38-399/+550
Various test scripts have been updated for style and also correct handling of exit status of various commands. * md/test-cleanup: tests: order arguments to git-rev-list properly t9109: don't swallow Git errors upstream of pipes tests: don't swallow Git errors upstream of pipes t/*: fix ordering of expected/observed arguments tests: standardize pipe placement Documentation: add shell guidelines t/README: reformat Do, Don't, Keep in mind lists
2018-10-16Merge branch 'tg/t5551-with-curl-7.61.1'Libravatar Junio C Hamano1-34/+34
Test update. * tg/t5551-with-curl-7.61.1: t5551: compare sorted cookies files t5551: move setup code inside test_expect blocks
2018-10-16Merge branch 'ts/alias-of-alias'Libravatar Junio C Hamano1-0/+40
An alias that expands to another alias has so far been forbidden, but now it is allowed to create such an alias. * ts/alias-of-alias: t0014: introduce an alias testing suite alias: show the call history when an alias is looping alias: add support for aliases of an alias
2018-10-16Merge branch 'ds/commit-graph-with-grafts'Libravatar Junio C Hamano2-2/+68
The recently introduced commit-graph auxiliary data is incompatible with mechanisms such as replace & grafts that "breaks" immutable nature of the object reference relationship. Disable optimizations based on its use (and updating existing commit-graph) when these incompatible features are in use in the repository. * ds/commit-graph-with-grafts: commit-graph: close_commit_graph before shallow walk commit-graph: not compatible with uninitialized repo commit-graph: not compatible with grafts commit-graph: not compatible with replace objects test-repository: properly init repo commit-graph: update design document refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback refs.c: migrate internal ref iteration to pass thru repository argument
2018-10-16Merge branch 'ab/commit-graph-progress'Libravatar Junio C Hamano1-0/+21
Generation of (experimental) commit-graph files have so far been fairly silent, even though it takes noticeable amount of time in a meaningfully large repository. The users will now see progress output. * ab/commit-graph-progress: gc: fix regression in 7b0f229222 impacting --quiet commit-graph verify: add progress output commit-graph write: add progress output
2018-10-11config: add new index.threads config settingLibravatar Ben Peart2-0/+10
Add support for a new index.threads config setting which will be used to control the threading code in do_read_index(). A value of 0 will tell the index code to automatically determine the correct number of threads to use. A value of 1 will make the code single threaded. A value greater than 1 will set the maximum number of threads to use. For testing purposes, this setting can be overwritten by setting the GIT_TEST_INDEX_THREADS=<n> environment variable to a value greater than 0. Signed-off-by: Ben Peart <benpeart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-11eoie: add End of Index Entry (EOIE) extensionLibravatar Ben Peart1-4/+4
The End of Index Entry (EOIE) is used to locate the end of the variable length index entries and the beginning of the extensions. Code can take advantage of this to quickly locate the index extensions without having to parse through all of the index entries. The EOIE extension is always written out to the index file including to the shared index when using the split index feature. Because it is always written out, the SHA checksums in t/t1700-split-index.sh were updated to reflect its inclusion. It is written as an optional extension to ensure compatibility with other git implementations that do not yet support it. It is always written out to ensure it is available as often as possible to speed up index operations. Because it must be able to be loaded before the variable length cache entries and other index extensions, this extension must be written last. The signature for this extension is { 'E', 'O', 'I', 'E' }. The extension consists of: - 32-bit offset to the end of the index entries - 160-bit SHA-1 over the extension types and their sizes (but not their contents). E.g. if we have "TREE" extension that is N-bytes long, "REUC" extension that is M-bytes long, followed by "EOIE", then the hash would be: SHA-1("TREE" + <binary representation of N> + "REUC" + <binary representation of M>) Signed-off-by: Ben Peart <benpeart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-10Merge branch 'ab/fsck-skiplist'Libravatar Junio C Hamano3-4/+121
Update fsck.skipList implementation and documentation. * ab/fsck-skiplist: fsck: support comments & empty lines in skipList fsck: use oidset instead of oid_array for skipList fsck: use strbuf_getline() to read skiplist file fsck: add a performance test for skipList fsck: add a performance test fsck: document that skipList input must be unabbreviated fsck: document and test commented & empty line skipList input fsck: document and test sorted skipList input fsck tests: add a test for no skipList input fsck tests: setup of bogus commit object
2018-10-10Merge branch 'ds/multi-pack-verify'Libravatar Junio C Hamano1-1/+135
"git multi-pack-index" learned to detect corruption in the .midx file it uses, and this feature has been integrated into "git fsck". * ds/multi-pack-verify: fsck: verify multi-pack-index multi-pack-index: report progress during 'verify' multi-pack-index: verify object offsets multi-pack-index: fix 32-bit vs 64-bit size check multi-pack-index: verify oid lookup order multi-pack-index: verify oid fanout order multi-pack-index: verify missing pack multi-pack-index: verify packname order multi-pack-index: verify corrupt chunk lookup table multi-pack-index: verify bad header multi-pack-index: add 'verify' verb
2018-10-10Merge branch 'bc/hash-independent-tests'Libravatar Junio C Hamano14-113/+350
Various tests have been updated to make it easier to swap the hash function used for object identification. * bc/hash-independent-tests: t5318: use test_oid for HASH_LEN t1407: make hash size independent t1406: make hash-size independent t1405: make hash size independent t1400: switch hard-coded object ID to variable t1006: make hash size independent t0064: make hash size independent t0002: abstract away SHA-1 specific constants t0000: update tests for SHA-256 t0000: use hash translation table t: add test functions to translate hash-related values
2018-10-10Merge branch 'nd/test-tool'Libravatar Junio C Hamano12-109/+121
Test helper binaries clean-up. * nd/test-tool: Makefile: add a hint about TEST_BUILTINS_OBJS t/helper: merge test-dump-fsmonitor into test-tool t/helper: merge test-parse-options into test-tool t/helper: merge test-pkt-line into test-tool t/helper: merge test-dump-untracked-cache into test-tool t/helper: keep test-tool command list sorted
2018-10-09transport.c: introduce core.alternateRefsPrefixesLibravatar Taylor Blau1-0/+8
The recently-introduced "core.alternateRefsCommand" allows callers to specify with high flexibility the tips that they wish to advertise from alternates. This flexibility comes at the cost of some inconvenience when the caller only wishes to limit the advertisement to one or more prefixes. For example, to advertise only tags, a caller using 'core.alternateRefsCommand' would have to do: $ git config core.alternateRefsCommand ' \ f() { git -C "$1" for-each-ref \ refs/tags --format="%(objectname)" }; f "$@"' The above is cumbersome to write, so let's introduce a "core.alternateRefsPrefixes" to address this common case. Instead, the caller can run: $ git config core.alternateRefsPrefixes 'refs/tags' Which will behave identically to the longer example using "core.alternateRefsCommand". Since the value of "core.alternateRefsPrefixes" is appended to 'git for-each-ref' and then executed, include a "--" before taking the configured value to avoid misinterpreting arguments as flags to 'git for-each-ref'. In the case that the caller wishes to specify multiple prefixes, they may separate them by whitespace. If "core.alternateRefsCommand" is set, it will take precedence over "core.alternateRefsPrefixes". Signed-off-by: Taylor Blau <me@ttaylorr.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-09transport.c: introduce core.alternateRefsCommandLibravatar Taylor Blau1-0/+33
When in a repository containing one or more alternates, Git would sometimes like to list references from those alternates. For example, 'git receive-pack' lists the "tips" pointed to by references in those alternates as special ".have" references. Listing ".have" references is designed to make pushing changes from upstream to a fork a lightweight operation, by advertising to the pusher that the fork already has the objects (via its alternate). Thus, the client can avoid sending them. However, when the alternate (upstream, in the previous example) has a pathologically large number of references, the initial advertisement is too expensive. In fact, it can dominate any such optimization where the pusher avoids sending certain objects. Introduce "core.alternateRefsCommand" in order to provide a facility to limit or filter alternate references. This can be used, for example, to filter out references the alternate does not wish to send (for space concerns, or otherwise) during the initial advertisement. Let the repository that has alternates configure this command to avoid trusting the alternate to provide us a safe command to run in the shell. To find the alternate, pass its absolute path as the first argument. Signed-off-by: Taylor Blau <me@ttaylorr.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07fetch: do not list refs if fetching only hashesLibravatar Jonathan Tan2-0/+28
If only hash literals are given on a "git fetch" command-line, tag following is not requested, and the fetch is done using protocol v2, a list of refs is not required from the remote. Therefore, optimize by invoking transport_get_remote_refs() only if we need the refs. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07transport: do not list refs if possibleLibravatar Jonathan Tan1-0/+4
When all refs to be fetched are exact OIDs, it is possible to perform a fetch without requiring the remote to list refs if protocol v2 is used. Teach Git to do this. This currently has an effect only for lazy fetches done from partial clones. The change necessary to likewise optimize "git fetch <remote> <sha-1>" will be done in a subsequent patch. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07tests: order arguments to git-rev-list properlyLibravatar Matthew DeVore3-29/+44
It is a common mistake to put positional arguments before flags when invoking git-rev-list. Order the positional arguments last. This patch skips git-rev-list invocations which include the --not flag, since the ordering of flags and positional arguments affects the behavior. This patch also skips invocations of git-rev-list that occur in command substitution in which the exit code is discarded, since fixing those properly will require a more involved cleanup. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07t9109: don't swallow Git errors upstream of pipesLibravatar Matthew DeVore1-13/+21
'git ... | foo' will mask any errors or crashes in git, so split up such pipes in this file. One testcase uses several separate pipe sequences in a row which are awkward to split up. Wrap the split-up pipe in a function so the awkwardness is not repeated. Also change that testcase's surrounding quotes from double to single to avoid premature string interpolation. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07tests: don't swallow Git errors upstream of pipesLibravatar Matthew DeVore3-132/+141
Some pipes in tests lose the exit code of git processes, which can mask unexpected behavior like crashes. Split these pipes up so that git commands are only at the end of pipes rather than the beginning or middle. The violations fixed in this patch were found in the process of fixing pipe placement in a prior patch. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07t/*: fix ordering of expected/observed argumentsLibravatar Matthew DeVore32-112/+112
Fix various places where the ordering was obviously wrong, meaning it was easy to find with grep. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07tests: standardize pipe placementLibravatar Matthew DeVore7-250/+344
Instead of using a line-continuation and pipe on the second line, take advantage of the shell's implicit line continuation after a pipe character. So for example, instead of some long line \ | next line use some long line | next line And add a blank line before and after the pipe where it aids readability (it usually does). This better matches the coding style documented in Documentation/CodingGuidelines and used in shell scripts elsewhere in the tree. Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07Documentation: add shell guidelinesLibravatar Matthew DeVore1-0/+27
Add the following guideline to Documentation/CodingGuidelines: Break overlong lines after "&&", "||", and "|", not before them; that way the command can continue to subsequent lines without backslash at the end. And the following to t/README (since it is specific to writing tests): Pipes and $(git ...) should be avoided when they swallow exit codes of Git processes Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-07t/README: reformat Do, Don't, Keep in mind listsLibravatar Matthew DeVore1-22/+20
The list of Don'ts for test writing has grown large such that it is hard to see at a glance which section an item is in. In other words, if I ignore a little bit of surrounding context, the "don'ts" look like "do's." To make the list more readable, prefix "Don't" in front of every first sentence in the items. Also, the "Keep in mind" list is out of place and awkward, because it was a very short "list" beneath two very long ones, and it seemed easy to miss under the list of "don'ts," and it only had one item. So move this item to the list of "do's" and phrase as "Remember..." Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-04fetch-pack: exclude blobs when lazy-fetching treesLibravatar Jonathan Tan1-0/+41
A partial clone with missing trees can be obtained using "git clone --filter=tree:none <repo>". In such a repository, when a tree needs to be lazily fetched, any tree or blob it directly or indirectly references is fetched as well, regardless of whether the original command required those objects, or if the local repository already had some of them. This is because the fetch protocol, which the lazy fetch uses, does not allow clients to request that only the wanted objects be sent, which would be the ideal solution. This patch implements a partial solution: specify the "blob:none" filter, somewhat reducing the fetch payload. This change has no effect when lazily fetching blobs (due to how filters work). And if lazily fetching a commit (such repositories are difficult to construct and is not a use case we support very well, but it is possible), referenced commits and trees are still fetched - only the blobs are not fetched. The necessary code change is done in fetch_pack() instead of somewhere closer to where the "filter" instruction is written to the wire so that only one part of the code needs to be changed in order for users of all protocol versions to benefit from this optimization. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-03grep: add -r/--[no-]recursiveLibravatar René Scharfe1-0/+12
Recognize -r and --recursive as synonyms for --max-depth=-1 for compatibility with GNU grep; it's still the default for git grep. This also adds --no-recursive as synonym for --max-depth=0 for free, which is welcome for completeness and consistency. Fix the description for --max-depth, while we're at it -- negative values other than -1 actually disable recursion, i.e. they are equivalent to --max-depth=0. Requested-by: Christoph Berg <myon@debian.org> Suggested-by: Junio C Hamano <gitster@pobox.com> Initial-patch-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-03help -a: improve and make --verbose defaultLibravatar Nguyễn Thái Ngọc Duy1-2/+2
When you type "git help" (or just "git") you are greeted with a list with commonly used commands and their short description and are suggested to use "git help -a" or "git help -g" for more details. "git help -av" would be more friendly and inline with what is shown with "git help" since it shows list of commands with description as well, and commands are properly grouped. "help -av" does not show everything "help -a" shows though. Add external command section in "help -av" for this. While at there, add a section for aliases as well (until now aliases have no UI, just "git config"). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28rev-parse: --show-superproject-working-tree should work during a mergeLibravatar Sam McKelvie1-0/+16
Invoking 'git rev-parse --show-superproject-working-tree' exits with "fatal: BUG: returned path string doesn't match cwd?" when the superproject has an unmerged entry for the current submodule, instead of displaying the superproject's working tree. The problem is due to the fact that when a merge of the submodule reference is in progress, "git ls-files --stage —full-name <submodule-relative-path>” returns three seperate entries for the submodule (one for each stage) rather than a single entry; e.g., $ git ls-files --stage --full-name submodule-child-test 160000 dbbd2766fa330fa741ea59bb38689fcc2d283ac5 1 submodule-child-test 160000 f174d1dbfe863a59692c3bdae730a36f2a788c51 2 submodule-child-test 160000 e6178f3a58b958543952e12824aa2106d560f21d 3 submodule-child-test The code in get_superproject_working_tree() expected exactly one entry to be returned; this patch makes it use the first entry if multiple entries are returned. Test t1500-rev-parse is extended to cover this case. Signed-off-by: Sam McKelvie <sammck@gmail.com> Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28t1400: drop debug `echo` to actually execute `test`Libravatar Martin Ågren1-1/+1
Instead of running `test "foo" = "$(bar)"`, we prefix the whole thing with `echo`. Comparing to nearby tests makes it clear that this is just debug leftover. This line has actually been modified four times since it was introduced in e52290428b (General ref log reading improvements., 2006-05-19) and the `echo` has always survived. Let's finally drop it. This script could need some more cleanups. This is just an immediate fix so that we actually test what we intend to. All other hits for `git grep "\<echo test " -- t/` seem fine. They want to create some input or expected output data. Signed-off-by: Martin Ågren <martin.agren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28t0000: do not get self-test disrupted by environment warningsLibravatar Junio C Hamano2-0/+12
The test framework test-lib.sh itself would want to give warnings and hints, e.g. when it sees a deprecated environment variable is in use that we want to encourage users to migrate to another variable. The self-test of test framework done in t0000 however do not expect to see these warnings and hints, so depending on the settings of environment variables, a running test may or may not produce these messages to the standard error output, breaking the expectations of self-test test framework does on itself. Here is what we see: $ TEST_GIT_INDEX_VERSION=4 sh t0000-basic.sh -i -v ... 'err' is not empty, it contains: warning: TEST_GIT_INDEX_VERSION is now GIT_TEST_INDEX_VERSION hint: set GIT_TEST_INDEX_VERSION too during the transition period not ok 5 - pretend we have a fully passing test suite The following quick attempt to work it around does not work, because some tests in t0000 do want to see expected errors from the test framework itself. t/t0000-basic.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/t/t0000-basic.sh b/t/t0000-basic.sh index 850f651e4e..88c6ed4696 100755 --- a/t/t0000-basic.sh +++ b/t/t0000-basic.sh @@ -88,7 +88,7 @@ _run_sub_test_lib_test_common () { ' # Point to the t/test-lib.sh, which isn't in ../ as usual - . "\$TEST_DIRECTORY"/test-lib.sh + . "\$TEST_DIRECTORY"/test-lib.sh >/dev/null 2>&1 EOF cat >>"$name.sh" && chmod +x "$name.sh" && There are a few possible ways to work this around: * We could strip the warning: and hint: unconditionally from the error output before the error messages are checked in the self-test (helper functions check_sub_test_lib_test_err and check_sub_test_lib_test); the problem with this approach is that it will make it impossible to write self-tests to ensure that right warnings and hints are given. * We could force a sane environment settings before the test helper _run_sub_test_lib_test_common dot-sources test-lib.sh; the problem with this approach is that _run_sub_test_lib_test_common now needs to be aware of what pairs of environment variables are checked in test-lib.sh using check_var_migration helper. The final patch I came up with is probably the solution that is least bad. Set a variable to tell test-lib.sh that we are running a self-test, so that various pieces in test-lib.sh can react to keep the output stable. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28preload-index: update GIT_FORCE_PRELOAD_TEST supportLibravatar Ben Peart3-2/+6
Rename GIT_FORCE_PRELOAD_TEST to GIT_TEST_PRELOAD_INDEX for consistency with the other GIT_TEST_ special setups and properly document its use. Add logic in t/test-lib.sh to give a warning when the old variable is set to let people know they need to update their environment to use the new variable. Signed-off-by: Ben Peart <Ben.Peart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28read-cache: update TEST_GIT_INDEX_VERSION supportLibravatar Ben Peart2-6/+12
Rename TEST_GIT_INDEX_VERSION to GIT_TEST_INDEX_VERSION for consistency with the other GIT_TEST_ special setups and properly document its use. Add logic in t/test-lib.sh to give a warning when the old variable is set to let people know they need to update their environment to use the new variable. Signed-off-by: Ben Peart <Ben.Peart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-28fsmonitor: update GIT_TEST_FSMONITOR supportLibravatar Ben Peart4-8/+25
Rename GIT_FSMONITOR_TEST to GIT_TEST_FSMONITOR for consistency with the other GIT_TEST_ special setups and properly document its use. Add logic in t/test-lib.sh to give a warning when the old variable is set to let people know they need to update their environment to use the new variable. Remove the outdated instructions on how to run the test suite utilizing fsmonitor now that it is properly documented in t/README. Signed-off-by: Ben Peart <Ben.Peart@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27commit: fix erroneous BUG, 'multiple renames on the same target? how?'Libravatar Elijah Newren1-0/+23
builtin/commit.c:prepare_to_commit() can call run_status() twice if using the editor, including status, and the user attempts to record a non-merge empty commit without explicit --allow-empty. If there is also a rename involved as well (due to using 'git add -N'), then a BUG in wt-status.c is triggered: BUG: wt-status.c:476: multiple renames on the same target? how? The reason we hit this bug is that both run_status() calls use the same struct wt_status * (named s), and s->change is not freed between runs. Changes are inserted into s with string_list_insert, which usually means that the second run just recomputes all the same results and overwrites what was computed the first time. However, ever since commit 176ea7479309 ("wt-status.c: handle worktree renames", 2017-12-27), wt-status started checking for renames and copies but also added a preventative check that d->rename_status wasn't already set and output a BUG message if it was. The problem isn't that there are multiple rename targets to a single path as the error implies, the problem is that 's' is not freed/cleared between the two run_status() calls. Ever since commit dc6b1d92ca9c ("wt-status: use settings from git_diff_ui_config", 2018-05-04), which stopped hardcoding DIFF_DETECT_RENAME and allowed users to ask for copy detection, this bug has also been triggerable with a copy instead of a rename. Fix the bug by clearing s->change. A better change might be to clean up all of s between the two run_status() calls. A good first step towards such a goal might be writing a function to free the necessary fields in the wt_status * struct; a cursory glance at the code suggests all of its allocated data is probably leaked. However, doing all that cleanup is a bigger task for someone else interested to tackle; just fix the bug for now. Reported-by: Andrea Stacchiotti <andreastacchiotti@gmail.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-09-27Sync with 2.19.1Libravatar Junio C Hamano2-0/+77
* maint: Git 2.19.1 Git 2.18.1 Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.18.1Libravatar Junio C Hamano2-0/+77
* maint-2.18: Git 2.18.1 Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options
2018-09-27Sync with 2.17.2Libravatar Junio C Hamano2-0/+77
* maint-2.17: Git 2.17.2 fsck: detect submodule paths starting with dash fsck: detect submodule urls starting with dash Git 2.16.5 Git 2.15.3 Git 2.14.5 submodule-config: ban submodule paths that start with a dash submodule-config: ban submodule urls that start with dash submodule--helper: use "--" to signal end of clone options