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diff --git a/Documentation/RelNotes/2.16.0.txt b/Documentation/RelNotes/2.16.0.txt new file mode 100644 index 0000000000..c617e37dd8 --- /dev/null +++ b/Documentation/RelNotes/2.16.0.txt @@ -0,0 +1,277 @@ +Git 2.16 Release Notes +====================== + +Backward compatibility notes and other notable changes. + + * Use of an empty string as a pathspec element that is used for + 'everything matches' is now an error. + + +Updates since v2.15 +------------------- + +UI, Workflows & Features + + * An empty string as a pathspec element that means "everything" + i.e. 'git add ""', is now illegal. We started this by first + deprecating and warning a pathspec that has such an element in + 2.11 (Nov 2016). + + * A hook script that is set unexecutable is simply ignored. Git + notifies when such a file is ignored, unless the message is + squelched via advice.ignoredHook configuration. + + * "git pull" has been taught to accept "--[no-]signoff" option and + pass it down to "git merge". + + * The "--push-option=<string>" option to "git push" now defaults to a + list of strings configured via push.pushOption variable. + + * "gitweb" checks if a directory is searchable with Perl's "-x" + operator, which can be enhanced by using "filetest 'access'" + pragma, which now we do. + + * "git stash save" has been deprecated in favour of "git stash push". + + * The set of paths output from "git status --ignored" was tied + closely with its "--untracked=<mode>" option, but now it can be + controlled more flexibly. Most notably, a directory that is + ignored because it is listed to be ignored in the ignore/exclude + mechanism can be handled differently from a directory that ends up + to be ignored only because all files in it are ignored. + + * The remote-helper for talking to MediaWiki has been updated to + truncate an overlong pagename so that ".mw" suffix can still be + added. + + * The remote-helper for talking to MediaWiki has been updated to + work with mediawiki namespaces. + + * The "--format=..." option "git for-each-ref" takes learned to show + the name of the 'remote' repository and the ref at the remote side + that is affected for 'upstream' and 'push' via "%(push:remotename)" + and friends. + + * Doc and message updates to teach users "bisect view" is a synonym + for "bisect visualize". + + * "git bisect run" that did not specify any command to run used to go + ahead and treated all commits to be tested as 'good'. This has + been corrected by making the command error out. + + * The SubmittingPatches document has been converted to produce an + HTML version via AsciiDoc/Asciidoctor. + (merge 049e64aa50 bc/submitting-patches-in-asciidoc later to maint). + + * We learned to talk to watchman to speed up "git status" and other + operations that need to see which paths have been modified. + + * The "diff" family of commands learned to ignore differences in + carriage return at the end of line. + + * Places that know about "sendemail.to", like documentation and shell + completion (in contrib/) have been taught about "sendemail.tocmd", + too. + + * "git add --renormalize ." is a new and safer way to record the fact + that you are correcting the end-of-line convention and other + "convert_to_git()" glitches in the in-repository data. + + * "git branch" and "git checkout -b" are now forbidden from creating + a branch whose name is "HEAD". + + * "git branch --list" learned to show its output through the pager by + default when the output is going to a terminal, which is controlled + by the pager.branch configuration variable. This is similar to a + recent change to "git tag --list". + + * "git grep -W", "git diff -W" and their friends learned a heuristic + to extend a pre-context beyond the line that matches the "function + pattern" (aka "diff.*.xfuncname") to include a comment block, if + exists, that immediately precedes it. + + +Performance, Internal Implementation, Development Support etc. + + * An earlier update made it possible to use an on-stack in-core + lockfile structure (as opposed to having to deliberately leak an + on-heap one). Many codepaths have been updated to take advantage + of this new facility. + + * Calling cmd_foo() as if it is a general purpose helper function is + a no-no. Correct two instances of such to set an example. + + * We try to see if somebody runs our test suite with a shell that + does not support "local" like bash/dash does. + + * An early part of piece-by-piece rewrite of "git bisect" in C. + + * GSoC to piece-by-piece rewrite "git submodule" in C. + + * Optimize the code to find shortest unique prefix of object names. + + * Pathspec-limited revision traversal was taught not to keep finding + unneeded differences once it knows two trees are different inside + given pathspec. + + * Conversion from uchar[20] to struct object_id continues. + + * Code cleanup. + + * A single-word "unsigned flags" in the diff options is being split + into a structure with many bitfields. + + * TravisCI build updates. + + * Parts of a test to drive the long-running content filter interface + has been split into its own module, hopefully to eventually become + reusable. + + * Drop (perhaps overly cautious) sanity check before using the index + read from the filesystem at runtime. + +Also contains various documentation updates and code clean-ups. + + +Fixes since v2.15 +----------------- + + * "auto" as a value for the columnar output configuration ought to + judge "is the output consumed by humans?" with the same criteria as + "auto" for coloured output configuration, i.e. either the standard + output stream is going to tty, or a pager is in use. We forgot the + latter, which has been fixed. + + * The experimental "color moved lines differently in diff output" + feature was buggy around "ignore whitespace changes" edges, which + has been corrected. + + * Instead of using custom line comparison and hashing functions to + implement "moved lines" coloring in the diff output, use the pair + of these functions from lower-layer xdiff/ code. + + * Some codepaths did not check for errors when asking what branch the + HEAD points at, which have been fixed. + + * "git commit", after making a commit, did not check for errors when + asking on what branch it made the commit, which has been corrected. + + * "git status --ignored -u" did not stop at a working tree of a + separate project that is embedded in an ignored directory and + listed files in that other project, instead of just showing the + directory itself as ignored. + + * A broken access to object databases in recent update to "git grep + --recurse-submodules" has been fixed. + + * A recent regression in "git rebase -i" that broke execution of git + commands from subdirectories via "exec" instruction has been fixed. + + * A (possibly flakey) test fix. + + * "git check-ref-format --branch @{-1}" bit a "BUG()" when run + outside a repository for obvious reasons; clarify the documentation + and make sure we do not even try to expand the at-mark magic in + such a case, but still call the validation logic for branch names. + + * "git fetch --recurse-submodules" now knows that submodules can be + moved around in the superproject in addition to getting updated, + and finds the ones that need to be fetched accordingly. + + * Command line completion (in contrib/) update. + + * Description of blame.{showroot,blankboundary,showemail,date} + configuration variables have been added to "git config --help". + + * After an error from lstat(), diff_populate_filespec() function + sometimes still went ahead and used invalid data in struct stat, + which has been fixed. + + * UNC paths are also relevant in Cygwin builds and they are now + tested just like Mingw builds. + + * Correct start-up sequence so that a repository could be placed + immediately under the root directory again (which was broken at + around Git 2.13). + + * The credential helper for libsecret (in contrib/) has been improved + to allow possibly prompting the end user to unlock secrets that are + currently locked (otherwise the secrets may not be loaded). + + * MinGW updates. + + * Error checking in "git imap-send" for empty response has been + improved. + + * Recent update to the refs infrastructure implementation started + rewriting packed-refs file more often than before; this has been + optimized again for most trivial cases. + (merge 7c6bd25c7d mh/avoid-rewriting-packed-refs later to maint). + + * Some error messages did not quote filenames shown in it, which have + been fixed. + + * "git rebase -i" recently started misbehaving when a submodule that + is configured with 'submodule.<name>.ignore' is dirty; this has + been corrected. + + * Building with NO_LIBPCRE1_JIT did not disable it, which has been fixed. + + * We used to add an empty alternate object database to the system + that does not help anything; it has been corrected. + + * Doc update around use of "format-patch --subject-prefix" etc. + + * A fix for an ancient bug in "git apply --ignore-space-change" codepath. + + * Clarify and enhance documentation for "merge-base --fork-point", as + it was clear what it computed but not why/what for. + (merge 6d1700b8af jc/merge-base-fork-point-doc later to maint). + + * A few scripts (both in production and tests) incorrectly redirected + their error output. These have been corrected. + (merge eadf1c8f45 tz/redirect-fix later to maint). + + * "git notes" sent its error message to its standard output stream, + which was corrected. + (merge 89b9e31dd5 tz/notes-error-to-stderr later to maint). + + * The three-way merge performed by "git cherry-pick" was confused + when a new submodule was added in the meantime, which has been + fixed (or "papered over"). + (merge c641ca6707 sb/test-cherry-pick-submodule-getting-in-a-way later to maint). + + * The sequencer machinery (used by "git cherry-pick A..B", and "git + rebase -i", among other things) would have lost a commit if stopped + due to an unlockable index file, which has been fixed. + (merge bd58886775 pw/sequencer-recover-from-unlockable-index later to maint). + + * "git apply --inaccurate-eof" when used with "--ignore-space-change" + triggered an internal sanity check, which has been fixed. + (merge 4855de1233 rs/apply-inaccurate-eof-with-incomplete-line later to maint). + + * Command line completion (in contrib/) has been taught about the + "--copy" option of "git branch". + (merge 41ca0f773e tz/complete-branch-copy later to maint). + + * When "git rebase" prepared an mailbox of changes and fed it to "git + am" to replay them, it was confused when a stray "From " happened + to be in the log message of one of the replayed changes. This has + been corrected. + (merge ae3b2b04bb ew/rebase-mboxrd later to maint). + + * There was a recent semantic mismerge in the codepath to write out a + section of a configuration section, which has been corrected. + + * Mentions of "git-rebase" and "git-am" (dashed form) still remained + in end-user visible strings emitted by the "git rebase" command; + they have been corrected. + (merge 82cb775c06 ks/rebase-no-git-foo later to maint). + + * Contrary to the documentation, "git pull -4/-6 other-args" did not + ask the underlying "git fetch" to go over IPv4/IPv6, which has been + corrected. + (merge ffb4568afe sw/pull-ipv46-passthru later to maint). + + * Other minor doc, test and build updates and code cleanups. + (merge c5e3bc6ec4 sd/branch-copy later to maint). |