324 lines
14 KiB
Plaintext
324 lines
14 KiB
Plaintext
Git v2.43 Release Notes
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=======================
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Backward Compatibility Notes
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* The "--rfc" option of "git format-patch" used to be a valid way to
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override an earlier "--subject-prefix=<something>" on the command
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line and replace it with "[RFC PATCH]", but from this release, it
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merely prefixes the string "RFC " in front of the given subject
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prefix. If you are negatively affected by this change, please use
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"--subject-prefix=PATCH --rfc" as a replacement.
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* In Git 2.42, "git rev-list --stdin" learned to take non-revisions
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(like "--not") from the standard input, but the way such a "--not" was
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handled was quite confusing, which has been rethought. The updated
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rule is that "--not" given from the command line only affects revs
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given from the command line that comes but not revs read from the
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standard input, and "--not" read from the standard input affects
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revs given from the standard input and not revs given from the
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command line.
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UI, Workflows & Features
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* A message written in olden time prevented a branch from getting
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checked out, saying it is already checked out elsewhere. But these
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days, we treat a branch that is being bisected or rebased just like
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a branch that is checked out and protect it from getting modified
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with the same codepath. The message has been rephrased to say that
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the branch is "in use" to avoid confusion.
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* Hourly and other schedules of "git maintenance" jobs are randomly
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distributed now.
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* "git cmd -h" learned to signal which options can be negated by
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listing such options like "--[no-]opt".
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* The way authentication related data other than passwords (e.g.,
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oauth token and password expiration data) are stored in libsecret
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keyrings has been rethought.
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* Update the libsecret and wincred credential helpers to correctly
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match which credential to erase; they erased the wrong entry in
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some cases.
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* Git GUI updates.
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* "git format-patch" learned a new "--description-file" option that
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lets cover letter description to be fed; this can be used on
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detached HEAD where there is no branch description available, and
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also can override the branch description if there is one.
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* Use of the "--max-pack-size" option to allow multiple packfiles to
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be created is now supported even when we are sending unreachable
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objects to cruft packs.
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* "git format-patch --rfc --subject-prefix=<foo>" used to ignore the
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"--subject-prefix" option and used "[RFC PATCH]"; now we will add
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"RFC" prefix to whatever subject prefix is specified.
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* "git log --format" has been taught the %(decorate) placeholder for
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further customization over what the "--decorate" option offers.
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* The default log message created by "git revert", when reverting a
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commit that records a revert, has been tweaked, to encourage people
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to describe complex "revert of revert of revert" situations better in
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their own words.
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* The command-line completion support (in contrib/) learned to
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complete "git commit --trailer=" for possible trailer keys.
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* "git update-index" learned the "--show-index-version" option to
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inspect the index format version used by the on-disk index file.
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* "git diff" learned the "diff.statNameWidth" configuration variable,
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to give the default width for the name part in the "--stat" output.
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* "git range-diff --notes=foo" compared "log --notes=foo --notes" of
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the two ranges, instead of using just the specified notes tree,
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which has been corrected to use only the specified notes tree.
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* The command line completion script (in contrib/) can be told to
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complete aliases by including ": git <cmd> ;" in the alias to tell
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it that the alias should be completed in a similar way to how "git
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<cmd>" is completed. The parsing code for the alias has been
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loosened to allow ';' without an extra space before it.
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* "git for-each-ref" and friends learned to apply mailmap to
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authorname and other fields in a more flexible way than using
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separate placeholder letters like %a[eElL] every time we want to
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come up with small variants.
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* "git repack" machinery learned to pay attention to the "--filter="
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option.
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* "git repack" learned the "--max-cruft-size" option to prevent cruft
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packs from growing without bounds.
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* "git merge-tree" learned to take strategy backend specific options
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via the "-X" option, like "git merge" does.
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* "git log" and friends learned the "--dd" option that is a
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short-hand for "--diff-merges=first-parent -p".
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* The attribute subsystem learned to honor the "attr.tree"
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configuration variable that specifies which tree to read the
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.gitattributes files from.
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* "git merge-file" learns a mode to read three variants of the
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contents to be merged from blob objects.
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Performance, Internal Implementation, Development Support etc.
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* "git check-attr" has been taught to work better with sparse-index.
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* It may be tempting to leave the help text NULL for a command line
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option that is either hidden or too obvious, but "git subcmd -h"
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and "git subcmd --help-all" would have segfaulted if done so. Now
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the help text is truly optional.
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* Tests that are known to pass with LSan are now marked as such.
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* Flaky "git p4" tests, as well as "git svn" tests, are now skipped
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in the (rather expensive) sanitizer CI job.
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* Tests with LSan from time to time seem to emit harmless messages
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that make our tests unnecessarily flaky; we work around it by
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filtering the uninteresting output.
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* Unused parameters to functions are marked as such, and/or removed,
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in order to bring us closer to "-Wunused-parameter" clean.
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* The code to keep track of existing packs in the repository while
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repacking has been refactored.
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* The "streaming" interface used for bulk-checkin codepath has been
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narrowed to take only blob objects for now, with no real loss of
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functionality.
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* GitHub CI workflow has learned to trigger Coverity check.
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* Test coverage for trailers has been improved.
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* The code to iterate over loose references has been optimized to
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reduce the number of lstat() system calls.
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* The codepaths that read "chunk" formatted files have been corrected
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to pay attention to the chunk size and notice broken files.
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* Replace macos-12 used at GitHub CI with macos-13.
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(merge 682a868f67 js/ci-use-macos-13 later to maint).
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Fixes since v2.42
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-----------------
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* Overly long label names used in the sequencer machinery are now
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chopped to fit under filesystem limitation.
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* Scalar updates.
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* Tweak GitHub Actions CI so that pushing the same commit to multiple
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branch tips at the same time will not waste building and testing
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the same thing twice.
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* The commit-graph verification code that detects a mixture of zero and
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non-zero generation numbers has been updated.
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* "git diff -w --exit-code" with various options did not work
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correctly, which has been corrected.
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* The "transfer.unpackLimit" configuration variable ought to be used
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as a fallback, but overrode the more specific "fetch.unpackLimit"
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and "receive.unpackLimit" configuration variables by mistake, which
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has been corrected.
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* The use of API between two calls to require_clean_work_tree() from
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the sequencer code has been cleaned up for consistency.
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* "git diff --no-such-option" and other corner cases around the exit
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status of the "diff" command have been corrected.
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* "git for-each-ref --sort='contents:size'" sorted the refs according
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to size numerically, giving a ref that points at a blob twelve-byte
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(12) long before showing a blob hundred-byte (100) long, which has
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been corrected.
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* We now limit the depth of the tree objects and maximum length of
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pathnames recorded in tree objects.
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(merge 4d5693ba05 jk/tree-name-and-depth-limit later to maint).
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* Various fixes to the behavior of "rebase -i", when the command got
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interrupted by conflicting changes, have been made.
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* References from a description of the `--patch` option in various
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manual pages have been simplified and improved.
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* "git grep -e A --no-or -e B" is accepted, even though the negation
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of the "--or" option did not mean anything, which has been tightened.
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* The completion script (in contrib/) has been taught to treat the
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"-t" option to "git checkout" and "git switch" just like the
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"--track" option, to complete remote-tracking branches.
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* "git diff --no-index -R <(one) <(two)" did not work correctly,
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which has been corrected.
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* "git maintenance" timers' implementation has been updated, based on
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systemd timers, to work with WSL.
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* "git diff --cached" codepath did not fill the necessary stat
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information for a file when fsmonitor knows it is clean and ended
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up behaving as if it were not clean, which has been corrected.
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* How "alias.foo = : git cmd ; aliased-command-string" should be
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spelled with necessary whitespace around punctuation marks to work
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has been more clearly documented (but this will be moot with newer
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versions of Git where the parsing rules have been improved).
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* HTTP Header redaction code has been adjusted for a newer version of
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cURL library that shows its traces differently from earlier
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versions.
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* An error message given by "git send-email", when given a malformed
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address, did not show the offending address, which has been corrected.
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* UBSan options were not propagated through the test framework to git
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run via the httpd, unlike ASan options, which has been corrected.
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* "checkout --merge -- path" and "update-index --unresolve path" did
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not resurrect conflicted state that was resolved to remove path,
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but now they do.
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(merge 5bdedac3c7 jc/unresolve-removal later to maint).
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* The display width table for unicode characters has been updated for
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Unicode 15.1
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(merge 872976c37e bb/unicode-width-table-15 later to maint).
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* Update mailmap entry for Derrick.
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(merge 6e5457d8c7 ds/mailmap-entry-update later to maint).
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* In the ".gitmodules" files, submodules are keyed by their names,
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and the path to the submodule whose name is $name is specified by
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the submodule.$name.path variable. There were a few codepaths that
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mixed the name and path up when consulting the submodule database,
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which have been corrected. It took long for these bugs to be found
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as the name of a submodule initially is the same as its path, and
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the problem does not surface until it is moved to a different path,
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which apparently happens very rarely.
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* "git diff --merge-base X other args..." insisted that X must be a
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commit and errored out when given an annotated tag that peels to a
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commit, but we only need it to be a committish. This has been
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corrected.
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(merge 4adceb5a29 ar/diff-index-merge-base-fix later to maint).
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* "git merge-tree" used to segfault when the "--attr-source"
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option is used, which has been corrected.
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(merge e95bafc52f jc/merge-ort-attr-index-fix later to maint).
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* Unlike "git log --pretty=%D", "git log --pretty="%(decorate)" did
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not auto-initialize the decoration subsystem, which has been
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corrected.
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* Feeding "git stash store" with a random commit that was not created
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by "git stash create" now errors out.
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(merge d9b6634589 jc/fail-stash-to-store-non-stash later to maint).
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* The index file has room only for the lower 32-bit of the file size in
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the cached stat information, which means cached stat information
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will have 0 in its sd_size member for a file whose size is a multiple
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of 4GiB. This is mistaken for a racily clean path. Avoid it by
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storing a bogus sd_size value instead for such files.
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(merge 5143ac07b1 bc/racy-4gb-files later to maint).
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* "git p4" tried to store symlinks to LFS when told, but has been
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fixed not to do so, because it does not make sense.
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(merge 10c89a02b0 mm/p4-symlink-with-lfs later to maint).
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* The codepath to handle recipient addresses `git send-email
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--compose` learns from the user was completely broken, which has
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been corrected.
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(merge 3ec6167567 jk/send-email-fix-addresses-from-composed-messages later to maint).
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* "cd sub && git grep -f patterns" tried to read "patterns" file at
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the top level of the working tree; it has been corrected to read
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"sub/patterns" instead.
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* "git reflog expire --single-worktree" has been broken for the past
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20 months or so, which has been corrected.
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* "git send-email" did not have certain pieces of data computed yet
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when it tried to validate the outgoing messages and its recipient
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addresses, which has been sorted out.
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* "git bugreport" learned to complain when it received a command line
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argument that it will not use.
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* The codepath to traverse the commit-graph learned to notice that a
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commit is missing (e.g., corrupt repository lost an object), even
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though it knows something about the commit (like its parents) from
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what is in commit-graph.
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(merge 7a5d604443 ps/do-not-trust-commit-graph-blindly-for-existence later to maint).
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* "git rev-list --missing" did not work for missing commit objects,
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which has been corrected.
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* "git rev-list --unpacked --objects" failed to exclude packed
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non-commit objects, which has been corrected.
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(merge 7b3c8e9f38 tb/rev-list-unpacked-fix later to maint).
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* "To dereference" and "to peel" were sometimes used in in-code
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comments and documentation but without description in the glossary.
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(merge 893dce2ffb vd/glossary-dereference-peel later to maint).
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* Other code cleanup, docfix, build fix, etc.
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(merge c2c349a15c xz/commit-title-soft-limit-doc later to maint).
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(merge 1bd809938a tb/format-pack-doc-update later to maint).
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(merge 8f81532599 an/clang-format-typofix later to maint).
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(merge 3ca86adc2d la/strvec-header-fix later to maint).
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(merge 6789275d37 jc/test-i18ngrep later to maint).
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(merge 9972cd6004 ps/leakfixes later to maint).
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(merge 46edab516b tz/send-email-helpfix later to maint).
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