431 lines
18 KiB
Plaintext
431 lines
18 KiB
Plaintext
Git v1.8.3 Release Notes
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========================
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Backward compatibility notes (for Git 2.0)
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------------------------------------------
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When "git push [$there]" does not say what to push, we have used the
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traditional "matching" semantics so far (all your branches were sent
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to the remote as long as there already are branches of the same name
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over there). In Git 2.0, the default will change to the "simple"
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semantics that pushes only the current branch to the branch with the same
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name, and only when the current branch is set to integrate with that
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remote branch. Use the user preference configuration variable
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"push.default" to change this. If you are an old-timer who is used
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to the "matching" semantics, you can set the variable to "matching"
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to keep the traditional behaviour. If you want to live in the future
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early, you can set it to "simple" today without waiting for Git 2.0.
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When "git add -u" (and "git add -A") is run inside a subdirectory and
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does not specify which paths to add on the command line, it
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will operate on the entire tree in Git 2.0 for consistency
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with "git commit -a" and other commands. There will be no
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mechanism to make plain "git add -u" behave like "git add -u .".
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Current users of "git add -u" (without a pathspec) should start
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training their fingers to explicitly say "git add -u ."
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before Git 2.0 comes. A warning is issued when these commands are
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run without a pathspec and when you have local changes outside the
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current directory, because the behaviour in Git 2.0 will be different
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from today's version in such a situation.
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In Git 2.0, "git add <path>" will behave as "git add -A <path>", so
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that "git add dir/" will notice paths you removed from the directory
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and record the removal. Versions before Git 2.0, including this
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release, will keep ignoring removals, but the users who rely on this
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behaviour are encouraged to start using "git add --ignore-removal <path>"
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now before 2.0 is released.
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Updates since v1.8.2
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--------------------
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Foreign interface
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* remote-hg and remote-bzr helpers (in contrib/) have been updated.
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UI, Workflows & Features
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* The prompt string generator (in contrib/completion/) learned to
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show how many changes there are in total and how many have been
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replayed during a "git rebase" session.
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* "git branch --vv" learned to paint the name of the branch it
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integrates with in a different color (color.branch.upstream,
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which defaults to blue).
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* In a sparsely populated working tree, "git checkout <pathspec>" no
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longer unmarks paths that match the given pathspec that were
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originally ignored with "--sparse" (use --ignore-skip-worktree-bits
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option to resurrect these paths out of the index if you really want
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to).
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* "git log --format" specifier learned %C(auto) token that tells Git
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to use color when interpolating %d (decoration), %h (short commit
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object name), etc. for terminal output.
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* "git bisect" leaves the final outcome as a comment in its bisect
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log file.
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* "git clone --reference" can now refer to a gitfile "textual symlink"
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that points at the real location of the repository.
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* "git count-objects" learned "--human-readable" aka "-H" option to
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show various large numbers in Ki/Mi/GiB scaled as necessary.
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* "git cherry-pick $blob" and "git cherry-pick $tree" are nonsense,
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and a more readable error message e.g. "can't cherry-pick a tree"
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is given (we used to say "expected exactly one commit").
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* The "--annotate" option to "git send-email" can be turned on (or
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off) by default with sendemail.annotate configuration variable (you
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can use --no-annotate from the command line to override it).
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* The "--cover-letter" option to "git format-patch" can be turned on
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(or off) by default with format.coverLetter configuration
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variable. By setting it to 'auto', you can turn it on only for a
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series with two or more patches.
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* The bash completion support (in contrib/) learned that cherry-pick
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takes a few more options than it already knew about.
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* "git help" learned "-g" option to show the list of guides just like
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list of commands are given with "-a".
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* A triangular "pull from one place, push to another place" workflow
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is supported better by new remote.pushdefault (overrides the
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"origin" thing) and branch.*.pushremote (overrides the
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branch.*.remote) configuration variables.
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* "git status" learned to report that you are in the middle of a
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revert session, just like it does for a cherry-pick and a bisect
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session.
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* The handling by "git branch --set-upstream-to" against various forms
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of erroneous inputs was suboptimal and has been improved.
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* When the interactive access to git-shell is not enabled, it issues
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a message meant to help the system administrator to enable it.
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An explicit way to help the end users who connect to the service by
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issuing custom messages to refuse such an access has been added.
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* In addition to the case where the user edits the log message with
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the "e)dit" option of "am -i", replace the "Applying: this patch"
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message with the final log message contents after applymsg hook
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munges it.
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* "git status" suggests users to look into using --untracked=no option
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when it takes too long.
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* "git status" shows a bit more information during a
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rebase/bisect session.
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* "git fetch" learned to fetch a commit at the tip of an unadvertised
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ref by specifying a raw object name from the command line when the
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server side supports this feature.
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* Output from "git log --graph" works better with submodule log
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output now.
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* "git count-objects -v" learned to report leftover temporary
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packfiles and other garbage in the object store.
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* A new read-only credential helper (in contrib/) to interact with
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the .netrc/.authinfo files has been added.
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* "git send-email" can be used with the credential helper system.
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* There was no Porcelain way to say "I no longer am interested in
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this submodule", once you express your interest in a submodule with
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"submodule init". "submodule deinit" is the way to do so.
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* "git pull --rebase" learned to pass "-v/-q" options to underlying
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"git rebase".
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* The new "--follow-tags" option tells "git push" to push relevant
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annotated tags when pushing branches out.
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* "git merge" and "git pull" can optionally be told to inspect and
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reject when merging a commit that does not carry a trusted GPG
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signature.
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* "git mergetool" now feeds files to the "p4merge" backend in the
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order that matches the p4 convention, where "theirs" is usually
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shown on the left side, which is the opposite from what other backends
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expect.
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* "show/log" now honors gpg.program configuration just like other
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parts of the code that use GnuPG.
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* "git log" that shows the difference between the parent and the
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child has been optimized somewhat.
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* "git difftool" allows the user to write into the temporary files
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being shown; if the user makes changes to the working tree at the
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same time, it now refrains from overwriting the copy in the working
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tree and leaves the temporary file so that changes can be merged
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manually.
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* There was no good way to ask "I have a random string that came from
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outside world. I want to turn it into a 40-hex object name while
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making sure such an object exists". A new peeling suffix ^{object}
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can be used for that purpose, together with "rev-parse --verify".
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Performance, Internal Implementation, etc.
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* Updates for building under msvc.
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* A handful of issues in the code that traverses the working tree to find
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untracked and/or ignored files have been fixed, and the general
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codepath involved in "status -u" and "clean" have been cleaned up
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and optimized.
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* The stack footprint of some codepaths that access an object from a
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pack has been shrunk.
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* The logic to coalesce the same lines removed from the parents in
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the output from "diff -c/--cc" has been updated, but with O(n^2)
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complexity, so this might turn out to be undesirable.
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* The code to enforce permission bits on files in $GIT_DIR/ for
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shared repositories has been simplified.
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* A few codepaths know how much data they need to put in the
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hashtables they use when they start, but still began with small tables
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and repeatedly grew and rehashed them.
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* The API to walk reflog entries from the latest to older, which was
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necessary for operations such as "git checkout -", was cumbersome
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to use correctly and also inefficient.
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* Codepaths that inspect log-message-to-be and decide when to add a
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new Signed-off-by line in various commands have been consolidated.
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* The pkt-line API, implementation and its callers have been cleaned
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up to make them more robust.
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* The Cygwin port has a faster-but-lying lstat(2) emulation whose
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incorrectness does not matter in practice except for a few
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codepaths, and setting permission bits on directories is a codepath
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that needs to use a more correct one.
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* "git checkout" had repeated pathspec matches on the same paths,
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which have been consolidated. Also a bug in "git checkout dir/"
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that is started from an unmerged index has been fixed.
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* A few bugfixes to "git rerere" working on corner case merge
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conflicts have been applied.
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Also contains various documentation updates and code clean-ups.
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Fixes since v1.8.2
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------------------
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Unless otherwise noted, all the fixes since v1.8.2 in the maintenance
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track are contained in this release (see release notes to them for
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details).
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* Recent versions of File::Temp (used by "git svn") started blowing
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up when its tempfile sub is called as a class method; updated the
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callsite to call it as a plain vanilla function to fix it.
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(merge eafc2dd hb/git-pm-tempfile later to maint).
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* Various subcommands of "git remote" simply ignored extraneous
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command line arguments instead of diagnosing them as errors.
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(merge b17dd3f tr/remote-tighten-commandline-parsing later to maint).
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* When receive-pack detects an error in the pack header it received in
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order to decide which of unpack-objects or index-pack to run, it
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returned without closing the error stream, which led to a hung
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sideband thread.
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* Zsh completion forgot that the '%' character used to signal untracked
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files needs to be escaped with another '%'.
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* A commit object whose author or committer ident are malformed
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crashed some code that trusted that a name, an email and a
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timestamp can always be found in it.
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* When "upload-pack" fails while generating a pack in response to
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"git fetch" (or "git clone"), the receiving side had
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a programming error that triggered the die handler
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recursively.
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* "rev-list --stdin" and friends kept bogus pointers into the input
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buffer around as human readable object names. This was not a huge
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problem but was exposed by a new change that uses these names in
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error output.
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(merge 70d26c6 tr/copy-revisions-from-stdin later to maint).
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* Smart-capable HTTP servers were not restricted via the
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GIT_NAMESPACE mechanism when talking with commit-walking clients,
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like they are when talking with smart HTTP clients.
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(merge 6130f86 jk/http-dumb-namespaces later to maint).
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* "git merge-tree" did not omit a merge result that is identical to
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the "our" side in certain cases.
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(merge aacecc3 jk/merge-tree-added-identically later to maint).
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* Perl scripts like "git-svn" closed (instead of redirecting to /dev/null)
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the standard error stream, which is not a very smart thing to do.
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A later open may return file descriptor #2 for an unrelated purpose, and
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error reporting code may write into it.
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* "git show-branch" was not prepared to show a very long run of
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ancestor operators e.g. foobar^2~2^2^2^2...^2~4 correctly.
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* "git diff --diff-algorithm algo" is also understood as "git diff
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--diff-algorithm=algo".
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* The new core.commentchar configuration was not applied in a few
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places.
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* "git bundle" erroneously bailed out when parsing a valid bundle
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containing a prerequisite commit without a commit message.
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* "git log -S/-G" started paying attention to textconv filter, but
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there was no way to disable this. Make it honor the --no-textconv
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option.
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* When used with the "-d temporary-directory" option, "git filter-branch"
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failed to come back to the original working tree to perform the
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final clean-up procedure.
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* "git merge $(git rev-parse v1.8.2)" behaved quite differently from
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"git merge v1.8.2", as if v1.8.2 were written as v1.8.2^0 and did
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not pay much attention to the annotated tag payload. Make the code
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notice the type of the tag object, in addition to the dwim_ref()
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based classification the current code uses (i.e. the name appears
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in refs/tags/) to decide when to special-case tag merging.
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* Fix a 1.8.1.x regression that stopped matching "dir" (without a
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trailing slash) to a directory "dir".
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(merge efa5f82 jc/directory-attrs-regression-fix later to maint-1.8.1).
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* "git apply --whitespace=fix" was not prepared to see a line getting
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longer after fixing whitespaces (e.g. tab-in-indent aka Python).
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(merge 329b26e jc/apply-ws-fix-tab-in-indent later to maint-1.8.1).
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* The prompt string generator (in contrib/completion/) did not notice
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when we are in a middle of a "git revert" session.
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* "submodule summary --summary-limit" option did not support the
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"--option=value" form.
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* "index-pack --fix-thin" used an uninitialized value to compute
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the delta depths of objects it appends to the resulting pack.
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* "index-pack --verify-stat" used a few counters outside the protection
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of a mutex, possibly showing incorrect numbers.
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* The code to keep track of what directory names are known to Git on
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platforms with case insensitive filesystems could get confused upon a
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hash collision between these pathnames and would loop forever.
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* Annotated tags outside the refs/tags/ hierarchy were not advertised
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correctly to ls-remote and fetch with recent versions of Git.
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* Recent optimizations broke shallow clones.
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* "git cmd -- ':(top'" was not diagnosed as an invalid syntax, and
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instead the parser kept reading beyond the end of the string.
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* "git tag -f <tag>" always said "Updated tag '<tag>'" even when
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creating a new tag (i.e. neither overwriting nor updating).
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* "git p4" did not behave well when the path to the root of the P4
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client was not its real path.
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(merge bbd8486 pw/p4-symlinked-root later to maint).
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* "git archive" reported a failure when asked to create an archive out
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of an empty tree. It is more intuitive to give an empty
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archive back in such a case.
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* When "format-patch" quoted a non-ascii string in header files,
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it incorrectly applied rfc2047 and chopped a single character in
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the middle of the string.
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* An aliased command spawned from a bare repository that does not say
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it is bare with "core.bare = yes" was treated as non-bare by mistake.
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* In "git reflog expire", the REACHABLE bit was not cleared from the
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correct objects.
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* The logic used by "git diff -M --stat" to shorten the names of
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files before and after a rename did not work correctly when the
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common prefix and suffix between the two filenames overlapped.
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* The "--match=<pattern>" option of "git describe", when used with
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"--all" to allow refs that are not annotated tags to be a
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base of description, did not restrict the output from the command
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to those refs that match the given pattern.
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* Clarify in the documentation "what" gets pushed to "where" when the
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command line to "git push" does not say these explicitly.
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* The "--color=<when>" argument to the commands in the diff family
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was described poorly.
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* The arguments given to the pre-rebase hook were not documented.
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* The v4 index format was not documented.
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* The "--match=<pattern>" argument "git describe" takes uses glob
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pattern but it wasn't obvious from the documentation.
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* Some sources failed to compile on systems that lack NI_MAXHOST in
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their system header (e.g. z/OS).
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* Add an example use of "--env-filter" in "filter-branch"
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documentation.
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* "git bundle verify" did not say "records a complete history" for a
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bundle that does not have any prerequisites.
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* In the v1.8.0 era, we changed symbols that do not have to be global
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to file scope static, but a few functions in graph.c were used by
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CGit sideways, bypassing the entry points of the API the
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in-tree users use.
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* "git update-index -h" did not do the usual "-h(elp)" thing.
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* "git index-pack" had a buffer-overflow while preparing an
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informational message when the translated version of it was too
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long.
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* 'git commit -m "$msg"' used to add an extra newline even when
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$msg already ended with one.
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* The SSL peer verification done by "git imap-send" did not ask for
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Server Name Indication (RFC 4366), failing to connect to SSL/TLS
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sites that serve multiple hostnames on a single IP.
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* perl/Git.pm::cat_blob slurped everything in core only to write it
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out to a file descriptor, which was not a very smart thing to do.
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* "git branch" did not bother to check nonsense command line
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parameters. It now issues errors in many cases.
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* Verification of signed tags was not done correctly when not in C
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or en/US locale.
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* Some platforms and users spell UTF-8 differently; retry with the
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most official "UTF-8" when the system does not understand the
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user-supplied encoding name that is a common alternative
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spelling of UTF-8.
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* When export-subst is used, "zip" output recorded an incorrect
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size of the file.
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* "git am $maildir/" applied messages in an unexpected order; sort
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filenames read from the maildir/ in a way that is more likely to
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sort the messages in the order the writing MUA meant to, by sorting
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numeric segments in numeric order and non-numeric segments in
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alphabetical order.
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* "git submodule update", when recursed into sub-submodules, did not
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accumulate the prefix paths.
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