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2018-08-17Seventh batch for 2.19 cycleLibravatar Junio C Hamano1-0/+64
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-17Merge branch 'jk/diff-rendered-docs'Libravatar Junio C Hamano2-0/+110
The end result of documentation update has been made to be inspected more easily to help developers. * jk/diff-rendered-docs: add a script to diff rendered documentation
2018-08-17Merge branch 'nd/config-blame-sort'Libravatar Junio C Hamano1-34/+34
Doc fix. * nd/config-blame-sort: config.txt: reorder blame stuff to keep config keys sorted
2018-08-17Merge branch 'ab/fetch-nego'Libravatar Junio C Hamano2-1/+7
Update to a few other topics around 'git fetch'. * ab/fetch-nego: fetch doc: cross-link two new negotiation options negotiator: unknown fetch.negotiationAlgorithm should error out
2018-08-17Merge branch 'ab/fsck-transfer-updates'Libravatar Junio C Hamano1-35/+103
The test performed at the receiving end of "git push" to prevent bad objects from entering repository can be customized via receive.fsck.* configuration variables; we now have gained a counterpart to do the same on the "git fetch" side, with fetch.fsck.* configuration variables. * ab/fsck-transfer-updates: fsck: test and document unknown fsck.<msg-id> values fsck: add stress tests for fsck.skipList fsck: test & document {fetch,receive}.fsck.* config fallback fetch: implement fetch.fsck.* transfer.fsckObjects tests: untangle confusing setup config doc: elaborate on fetch.fsckObjects security config doc: elaborate on what transfer.fsckObjects does config doc: unify the description of fsck.* and receive.fsck.* config doc: don't describe *.fetchObjects twice receive.fsck.<msg-id> tests: remove dead code
2018-08-15Sixth batch for 2.19 cycleLibravatar Junio C Hamano1-0/+77
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-15Merge branch 'ms/http-proto-doc'Libravatar Junio C Hamano1-2/+2
Doc fix. * ms/http-proto-doc: doc: fix want-capability separator
2018-08-15Merge branch 'cb/p4-pre-submit-hook'Libravatar Junio C Hamano2-0/+15
"git p4 submit" learns to ask its own pre-submit hook if it should continue with submitting. * cb/p4-pre-submit-hook: git-p4: add the `p4-pre-submit` hook
2018-08-15Merge branch 'hs/gpgsm'Libravatar Junio C Hamano1-0/+10
Teach "git tag -s" etc. a few configuration variables (gpg.format that can be set to "openpgp" or "x509", and gpg.<format>.program that is used to specify what program to use to deal with the format) to allow x.509 certs with CMS via "gpgsm" to be used instead of openpgp via "gnupg". * hs/gpgsm: gpg-interface t: extend the existing GPG tests with GPGSM gpg-interface: introduce new signature format "x509" using gpgsm gpg-interface: introduce new config to select per gpg format program gpg-interface: do not hardcode the key string len anymore gpg-interface: introduce an abstraction for multiple gpg formats t/t7510: check the validation of the new config gpg.format gpg-interface: add new config to select how to sign a commit
2018-08-15Merge branch 'jk/core-use-replace-refs'Libravatar Junio C Hamano1-0/+5
A new configuration variable core.usereplacerefs has been added, primarily to help server installations that want to ignore the replace mechanism altogether. * jk/core-use-replace-refs: add core.usereplacerefs config option check_replace_refs: rename to read_replace_refs check_replace_refs: fix outdated comment
2018-08-15Merge branch 'es/diff-color-moved-fix'Libravatar Junio C Hamano1-1/+2
One of the "diff --color-moved" mode "dimmed_zebra" that was named in an unusual way has been deprecated and replaced by "dimmed-zebra". * es/diff-color-moved-fix: diff: --color-moved: rename "dimmed_zebra" to "dimmed-zebra"
2018-08-15Merge branch 'bw/protocol-v2'Libravatar Junio C Hamano1-1/+2
Doc update. * bw/protocol-v2: pack-protocol: mention and point to docs for protocol v2
2018-08-15Merge branch 'sb/trailers-docfix'Libravatar Junio C Hamano1-3/+6
Doc update. * sb/trailers-docfix: Documentation/git-interpret-trailers: explain possible values
2018-08-15Merge branch 'jk/ui-color-always-to-auto'Libravatar Junio C Hamano2-2/+2
Doc formatting fix. * jk/ui-color-always-to-auto: Documentation: fix --color option formatting
2018-08-06add a script to diff rendered documentationLibravatar Jeff King2-0/+110
After making a change to the documentation, it's easy to forget to check the rendered version to make sure it was formatted as you intended. And simply doing a diff between the two built versions is less trivial than you might hope: - diffing the roff or html output isn't particularly readable; what we really care about is what the end user will see - you have to tweak a few build variables to avoid spurious differences (e.g., version numbers, build times) Let's provide a script that builds and installs the manpages for two commits, renders the results using "man", and diffs the result. Since this is time-consuming, we'll also do our best to avoid repeated work, keeping intermediate results between runs. Some of this could probably be made a little less ugly if we built support into Documentation/Makefile. But by relying only on "make install-man" working, this script should work for generating a diff between any two versions, whether they include this script or not. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-06config.txt: reorder blame stuff to keep config keys sortedLibravatar Nguyễn Thái Ngọc Duy1-34/+34
The color group in config.txt is actually sorted but changes in sb/blame-color broke this. Reorder color.blame.* and move blame.coloring back to the rest of blame.* (and reorder that group too while we're there) Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-02Fifth batch for 2.19 cycleLibravatar Junio C Hamano1-0/+107
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-02Merge branch 'jt/fetch-negotiator-skipping'Libravatar Junio C Hamano1-0/+9
Add a server-side knob to skip commits in exponential/fibbonacci stride in an attempt to cover wider swath of history with a smaller number of iterations, potentially accepting a larger packfile transfer, instead of going back one commit a time during common ancestor discovery during the "git fetch" transaction. * jt/fetch-negotiator-skipping: negotiator/skipping: skip commits during fetch
2018-08-02Merge branch 'en/dirty-merge-fixes'Libravatar Junio C Hamano1-3/+3
The recursive merge strategy did not properly ensure there was no change between HEAD and the index before performing its operation, which has been corrected. * en/dirty-merge-fixes: merge: fix misleading pre-merge check documentation merge-recursive: enforce rule that index matches head before merging t6044: add more testcases with staged changes before a merge is invoked merge-recursive: fix assumption that head tree being merged is HEAD merge-recursive: make sure when we say we abort that we actually abort t6044: add a testcase for index matching head, when head doesn't match HEAD t6044: verify that merges expected to abort actually abort index_has_changes(): avoid assuming operating on the_index read-cache.c: move index_has_changes() from merge.c
2018-08-02Merge branch 'js/rebase-merge-octopus'Libravatar Junio C Hamano2-4/+13
"git rebase --rebase-merges" mode now handles octopus merges as well. * js/rebase-merge-octopus: rebase --rebase-merges: adjust man page for octopus support rebase --rebase-merges: add support for octopus merges merge: allow reading the merge commit message from a file
2018-08-02Merge branch 'tb/grep-only-matching'Libravatar Junio C Hamano1-1/+6
"git grep" learned the "--only-matching" option. * tb/grep-only-matching: grep.c: teach 'git grep --only-matching' grep.c: extract show_line_header()
2018-08-02Merge branch 'jt/fetch-nego-tip'Libravatar Junio C Hamano1-0/+16
"git fetch" learned a new option "--negotiation-tip" to limit the set of commits it tells the other end as "have", to reduce wasted bandwidth and cycles, which would be helpful when the receiving repository has a lot of refs that have little to do with the history at the remote it is fetching from. * jt/fetch-nego-tip: fetch-pack: support negotiation tip whitelist
2018-08-02Merge branch 'ab/checkout-default-remote'Libravatar Junio C Hamano3-0/+44
"git checkout" and "git worktree add" learned to honor checkout.defaultRemote when auto-vivifying a local branch out of a remote tracking branch in a repository with multiple remotes that have tracking branches that share the same names. * ab/checkout-default-remote: checkout & worktree: introduce checkout.defaultRemote checkout: add advice for ambiguous "checkout <branch>" builtin/checkout.c: use "ret" variable for return checkout: pass the "num_matches" up to callers checkout.c: change "unique" member to "num_matches" checkout.c: introduce an *_INIT macro checkout.h: wrap the arguments to unique_tracking_name() checkout tests: index should be clean after dwim checkout
2018-08-02Merge branch 'sb/diff-color-move-more'Libravatar Junio C Hamano2-2/+36
"git diff --color-moved" feature has further been tweaked. * sb/diff-color-move-more: diff.c: offer config option to control ws handling in move detection diff.c: add white space mode to move detection that allows indent changes diff.c: factor advance_or_nullify out of mark_color_as_moved diff.c: decouple white space treatment from move detection algorithm diff.c: add a blocks mode for moved code detection diff.c: adjust hash function signature to match hashmap expectation diff.c: do not pass diff options as keydata to hashmap t4015: avoid git as a pipe input xdiff/xdiffi.c: remove unneeded function declarations xdiff/xdiff.h: remove unused flags
2018-08-02Merge branch 'ds/commit-graph-fsck'Libravatar Junio C Hamano5-27/+25
"git fsck" learns to make sure the optional commit-graph file is in a sane state. * ds/commit-graph-fsck: (23 commits) coccinelle: update commit.cocci commit-graph: update design document gc: automatically write commit-graph files commit-graph: add '--reachable' option commit-graph: use string-list API for input fsck: verify commit-graph commit-graph: verify contents match checksum commit-graph: test for corrupted octopus edge commit-graph: verify commit date commit-graph: verify generation number commit-graph: verify parent list commit-graph: verify root tree OIDs commit-graph: verify objects exist commit-graph: verify corrupt OID fanout and lookup commit-graph: verify required chunks are present commit-graph: verify catches corrupt signature commit-graph: add 'verify' subcommand commit-graph: load a root tree from specific graph commit: force commit to parse from object database commit-graph: parse commit from chosen graph ...
2018-08-01git-p4: add the `p4-pre-submit` hookLibravatar Chen Bin2-0/+15
The `p4-pre-submit` hook is executed before git-p4 submits code. If the hook exits with non-zero value, submit process not start. Signed-off-by: Chen Bin <chenbin.sh@gmail.com> Reviewed-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-01fetch doc: cross-link two new negotiation optionsLibravatar Ævar Arnfjörð Bjarmason2-0/+5
Users interested in the fetch.negotiationAlgorithm variable added in 42cc7485a2 ("negotiator/skipping: skip commits during fetch", 2018-07-16) are probably interested in the related --negotiation-tip option added in 3390e42adb ("fetch-pack: support negotiation tip whitelist", 2018-07-02). Change the documentation for those two to reference one another to point readers in the right direction. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-01negotiator: unknown fetch.negotiationAlgorithm should error outLibravatar Ævar Arnfjörð Bjarmason1-1/+2
Change the handling of fetch.negotiationAlgorithm=<str> to error out on unknown strings, i.e. everything except "default" or "skipping". This changes the behavior added in 42cc7485a2 ("negotiator/skipping: skip commits during fetch", 2018-07-16) which would ignore all unknown values and silently fall back to the "default" value. For a feature like this it's much better to produce an error than proceed. We don't want users to debug some amazingly slow fetch that should benefit from "skipping", only to find that they'd forgotten to deploy the new git version on that particular machine. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-08-01Merge branch 'jt/fetch-nego-tip' into ab/fetch-negoLibravatar Junio C Hamano1-0/+16
* jt/fetch-nego-tip: fetch-pack: support negotiation tip whitelist
2018-07-30doc: fix want-capability separatorLibravatar Masaya Suzuki1-2/+2
Unlike ref advertisement, client capabilities and the first want are separated by SP, not NUL, in the implementation. Fix the documentation to align with the implementation. pack-protocol.txt is already fixed. Signed-off-by: Masaya Suzuki <masayasuzuki@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27fsck: test and document unknown fsck.<msg-id> valuesLibravatar Ævar Arnfjörð Bjarmason1-0/+4
When fsck.<msg-id> is set to an unknown value it'll cause "fsck" to die, but the same is not true of the "fetch" and "receive" variants. Document this and test for it. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27fsck: test & document {fetch,receive}.fsck.* config fallbackLibravatar Ævar Arnfjörð Bjarmason1-0/+12
Test and document that the {fetch,receive}.fsck.* family of variables doesn't fall back on the corresponding .fsck.* variables. This was alluded to in the existing documentation by saying that "receive" looks at receive.fsck.* and "fsck" looks at fsck.* etc., but it wasn't explicitly stated that there was no fallback, and if you'd e.g. like to configure the skipList you need to do that for all three. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27fetch: implement fetch.fsck.*Libravatar Ævar Arnfjörð Bjarmason1-4/+16
Implement support for fetch.fsck.* corresponding with the existing receive.fsck.*. This allows for pedantically cloning repositories with specific issues without turning off fetch.fsckObjects. One such repository is https://github.com/robbyrussell/oh-my-zsh.git which before this change will emit this error when cloned with fetch.fsckObjects: error: object 2b7227859263b6aabcc28355b0b994995b7148b6: zeroPaddedFilemode: contains zero-padded file modes fatal: Error in object fatal: index-pack failed Now with fetch.fsck.zeroPaddedFilemode=warn we'll warn about that issue, but the clone will succeed: warning: object 2b7227859263b6aabcc28355b0b994995b7148b6: zeroPaddedFilemode: contains zero-padded file modes warning: object a18c4d13c2a5fa2d4ecd5346c50e119b999b807d: zeroPaddedFilemode: contains zero-padded file modes warning: object 84df066176c8da3fd59b13731a86d90f4f1e5c9d: zeroPaddedFilemode: contains zero-padded file modes The motivation for this is to be able to turn on fetch.fsckObjects globally across a fleet of computers but still be able to manually clone various legacy repositories by either white-listing specific issues, or better yet whitelist specific objects. The use of --git-dir=* instead of -C in the tests could be considered somewhat archaic, but the tests I'm adding here are duplicating the corresponding receive.* tests with as few changes as possible. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27config doc: elaborate on fetch.fsckObjects securityLibravatar Ævar Arnfjörð Bjarmason1-0/+21
Change the transfer.fsckObjects documentation to explicitly note the unique security and/or corruption issues fetch.fsckObjects suffers from, since it doesn't have a quarantine environment. This was already alluded to in the existing documentation, but let's spell it out so there's no confusion here, and give a concrete example of how to work around this limitation. Let's also prominently note that this is considered to be a limitation of the current implementation, rather than something that's intended and by design, since we might change this in the future. See https://public-inbox.org/git/20180531060259.GE17344@sigill.intra.peff.net/ for further details. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27config doc: elaborate on what transfer.fsckObjects doesLibravatar Ævar Arnfjörð Bjarmason1-2/+11
The existing documentation led the user to believe that all we were doing were basic reachability sanity checks, but that hasn't been true for a very long time. Update the description to match reality, and note the caveat that there's a quarantine for accepting pushes, but not for fetching. Also mention that the fsck checks for security issues, which was my initial motivation for writing this fetch.fsck.* series. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27config doc: unify the description of fsck.* and receive.fsck.*Libravatar Ævar Arnfjörð Bjarmason1-27/+35
The documentation for the fsck.<msg-id> and receive.fsck.<msg-id> variables was mostly duplicated in two places, with fsck.<msg-id> making no mention of the corresponding receive.fsck.<msg-id>, and the same for fsck.skipList. I spent quite a lot of time today wondering why setting the fsck.<msg-id> variant wasn't working to clone a legacy repository (not that that would have worked anyway, but a subsequent patch implements fetch.fsck.<msg-id>). Rectify this situation by describing the feature in general terms under the fsck.* documentation, and make the receive.fsck.* documentation refer to those variables instead. This documentation was initially added in 2becf00ff7 ("fsck: support demoting errors to warnings", 2015-06-22) and 4b55b9b479 ("fsck: document the new receive.fsck.<msg-id> options", 2015-06-22). Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-27config doc: don't describe *.fetchObjects twiceLibravatar Ævar Arnfjörð Bjarmason1-8/+10
Refer readers of fetch.fsckObjects and receive.fsckObjects to transfer.fsckObjects instead of repeating the description at each location. I don't think this description of them makes much sense, but for now I'm just moving the existing documentation around. Making it better will be done in a later patch. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-25diff: --color-moved: rename "dimmed_zebra" to "dimmed-zebra"Libravatar Eric Sunshine1-1/+2
The --color-moved "dimmed_zebra" mode (with an underscore) is an anachronism. Most options and modes are hyphenated. It is more difficult to type and somewhat more difficult to read than those which are hyphenated. Therefore, rename it to "dimmed-zebra", and nominally deprecate "dimmed_zebra". Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-24Fourth batch for 2.19 cycleLibravatar Junio C Hamano1-0/+80
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-24Merge branch 'wc/find-commit-with-pattern-on-detached-head'Libravatar Junio C Hamano1-1/+2
"git rev-parse ':/substring'" did not consider the history leading only to HEAD when looking for a commit with the given substring, when the HEAD is detached. This has been fixed. * wc/find-commit-with-pattern-on-detached-head: sha1-name.c: for ":/", find detached HEAD commits
2018-07-24Merge branch 'jt/partial-clone-fsck-connectivity'Libravatar Junio C Hamano1-1/+3
Partial clone support of "git clone" has been updated to correctly validate the objects it receives from the other side. The server side has been corrected to send objects that are directly requested, even if they may match the filtering criteria (e.g. when doing a "lazy blob" partial clone). * jt/partial-clone-fsck-connectivity: clone: check connectivity even if clone is partial upload-pack: send refs' objects despite "filter"
2018-07-24Merge branch 'bc/send-email-auto-cte'Libravatar Junio C Hamano1-6/+11
The content-transfer-encoding of the message "git send-email" sends out by default was 8bit, which can cause trouble when there is an overlong line to bust RFC 5322/2822 limit. A new option 'auto' to automatically switch to quoted-printable when there is such a line in the payload has been introduced and is made the default. * bc/send-email-auto-cte: docs: correct RFC specifying email line length send-email: automatically determine transfer-encoding send-email: accept long lines with suitable transfer encoding send-email: add an auto option for transfer encoding
2018-07-24Merge branch 'jt/connectivity-check-after-unshallow'Libravatar Junio C Hamano2-1/+34
"git fetch" failed to correctly validate the set of objects it received when making a shallow history deeper, which has been corrected. * jt/connectivity-check-after-unshallow: fetch-pack: write shallow, then check connectivity fetch-pack: implement ref-in-want fetch-pack: put shallow info in output parameter fetch: refactor to make function args narrower fetch: refactor fetch_refs into two functions fetch: refactor the population of peer ref OIDs upload-pack: test negotiation with changing repository upload-pack: implement ref-in-want test-pkt-line: add unpack-sideband subcommand
2018-07-24Merge branch 'en/rebase-consistency'Libravatar Junio C Hamano2-27/+223
"git rebase" behaved slightly differently depending on which one of the three backends gets used; this has been documented and an effort to make them more uniform has begun. * en/rebase-consistency: git-rebase: make --allow-empty-message the default t3401: add directory rename testcases for rebase and am git-rebase.txt: document behavioral differences between modes directory-rename-detection.txt: technical docs on abilities and limitations git-rebase.txt: address confusion between --no-ff vs --force-rebase git-rebase: error out when incompatible options passed t3422: new testcases for checking when incompatible options passed git-rebase.sh: update help messages a bit git-rebase.txt: document incompatible options
2018-07-24pack-protocol: mention and point to docs for protocol v2Libravatar Brandon Williams1-1/+2
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-20Documentation/git-interpret-trailers: explain possible valuesLibravatar Stefan Beller1-3/+6
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-19diff.c: offer config option to control ws handling in move detectionLibravatar Stefan Beller2-2/+10
Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-19diff.c: add white space mode to move detection that allows indent changesLibravatar Stefan Beller1-0/+5
The option of --color-moved has proven to be useful as observed on the mailing list. However when refactoring sometimes the indentation changes, for example when partitioning a functions into smaller helper functions the code usually mostly moved around except for a decrease in indentation. To just review the moved code ignoring the change in indentation, a mode to ignore spaces in the move detection as implemented in a previous patch would be enough. However the whole move coloring as motivated in commit 2e2d5ac (diff.c: color moved lines differently, 2017-06-30), brought up the notion of the reviewer being able to trust the move of a "block". As there are languages such as python, which depend on proper relative indentation for the control flow of the program, ignoring any white space change in a block would not uphold the promises of 2e2d5ac that allows reviewers to pay less attention to the inside of a block, as inside the reviewer wants to assume the same program flow. This new mode of white space ignorance will take this into account and will only allow the same white space changes per line in each block. This patch even allows only for the same change at the beginning of the lines. As this is a white space mode, it is made exclusive to other white space modes in the move detection. This patch brings some challenges, related to the detection of blocks. We need a wide net to catch the possible moved lines, but then need to narrow down to check if the blocks are still intact. Consider this example (ignoring block sizes): - A - B - C + A + B + C At the beginning of a block when checking if there is a counterpart for A, we have to ignore all space changes. However at the following lines we have to check if the indent change stayed the same. Checking if the indentation change did stay the same, is done by computing the indentation change by the difference in line length, and then assume the change is only in the beginning of the longer line, the common tail is the same. That is why the test contains lines like: - <TAB> A ... + A <TAB> ... As the first line starting a block is caught using a compare function that ignores white spaces unlike the rest of the block, where the white space delta is taken into account for the comparison, we also have to think about the following situation: - A - B - A - B + A + B + A + B When checking if the first A (both in the + and - lines) is a start of a block, we have to check all 'A' and record all the white space deltas such that we can find the example above to be just one block that is indented. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-18add core.usereplacerefs config optionLibravatar Jeff King1-0/+5
We can already disable replace refs using a command line option or environment variable, but those are awkward to apply universally. Let's add a config option to do the same thing. That raises the question of why one might want to do so universally. The answer is that replace refs violate the immutability of objects. For instance, if you wanted to cache the diff between commit XYZ and its parent, then in theory that never changes; the hash XYZ represents the total state. But replace refs violate that; pushing up a new ref may create a completely new diff. The obvious "if it hurts, don't do it" answer is not to create replace refs if you're doing this kind of caching. But for a site hosting arbitrary repositories, they may want to allow users to share replace refs with each other, but not actually respect them on the site (because the caching is more important than the replace feature). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-18Third batch for 2.19 cycleLibravatar Junio C Hamano1-1/+59
Signed-off-by: Junio C Hamano <gitster@pobox.com>