diff options
Diffstat (limited to 'Documentation/RelNotes/2.10.0.txt')
| -rw-r--r-- | Documentation/RelNotes/2.10.0.txt | 442 |
1 files changed, 414 insertions, 28 deletions
diff --git a/Documentation/RelNotes/2.10.0.txt b/Documentation/RelNotes/2.10.0.txt index 4252eb7348..f4da28ab66 100644 --- a/Documentation/RelNotes/2.10.0.txt +++ b/Documentation/RelNotes/2.10.0.txt @@ -34,7 +34,7 @@ UI, Workflows & Features * "upload-pack" allows a custom "git pack-objects" replacement when responding to "fetch/clone" via the uploadpack.packObjectsHook. - (merge 20b20a2 jk/upload-pack-hook later to maint). + (merge b738396 jk/upload-pack-hook later to maint). * Teach format-patch and mailsplit (hence "am") how a line that happens to begin with "From " in the e-mail message is quoted with @@ -71,15 +71,62 @@ UI, Workflows & Features command line option "--no-show-signature" to countermand it. (merge fce04c3 mj/log-show-signature-conf later to maint). - * A couple of "git svn" updates. - * More markings of messages for i18n, with updates to various tests to pass GETTEXT_POISON tests. * "git archive" learned to handle files that are larger than 8GB and commits far in the future than expressible by the traditional US-TAR format. - (merge 5caeeb8 jk/big-and-future-archive-tar later to maint). + (merge 560b0e8 jk/big-and-future-archive-tar later to maint). + + + * A new configuration variable core.sshCommand has been added to + specify what value for GIT_SSH_COMMAND to use per repository. + + * "git worktree prune" protected worktrees that are marked as + "locked" by creating a file in a known location. "git worktree" + command learned a dedicated command pair to create and remove such + a file, so that the users do not have to do this with editor. + + * A handful of "git svn" updates. + + * "git push" learned to accept and pass extra options to the + receiving end so that hooks can read and react to them. + + * "git status" learned to suggest "merge --abort" during a conflicted + merge, just like it already suggests "rebase --abort" during a + conflicted rebase. + + * "git jump" script (in contrib/) has been updated a bit. + (merge a91e692 jk/git-jump later to maint). + + * "git push" and "git clone" learned to give better progress meters + to the end user who is waiting on the terminal. + + * An entry "git log --decorate" for the tip of the current branch is + shown as "HEAD -> name" (where "name" is the name of the branch); + the arrow is now painted in the same color as "HEAD", not in the + color for commits. + + * "git format-patch" learned format.from configuration variable to + specify the default settings for its "--from" option. + + * "git am -3" calls "git merge-recursive" when it needs to fall back + to a three-way merge; this call has been turned into an internal + subroutine call instead of spawning a separate subprocess. + + * The command line completion scripts (in contrib/) now knows about + "git branch --delete/--move [--remote]". + (merge 2703c22 vs/completion-branch-fully-spelled-d-m-r later to maint). + + * "git rev-parse --git-path hooks/<hook>" learned to take + core.hooksPath configuration variable (introduced during 2.9 cycle) + into account. + (merge 9445b49 ab/hooks later to maint). + + * "git log --show-signature" and other commands that display the + verification status of PGP signature now shows the longer key-id, + as 32-bit key-id is so last century. Performance, Internal Implementation, Development Support etc. @@ -96,19 +143,19 @@ Performance, Internal Implementation, Development Support etc. * "git upload-pack" command has been updated to use the parse-options API. - * The "git apply" standalone program is being libified; this is the - first step to move many state variables into a structure that can - be explicitly (re)initialized to make the machinery callable more - than once. + * The "git apply" standalone program is being libified; the first + step to move many state variables into a structure that can be + explicitly (re)initialized to make the machinery callable more + than once has been merged. * HTTP transport gained an option to produce more detailed debugging trace. (merge 73e57aa ep/http-curl-trace later to maint). - * Instead of taking advantage of a struct string_list that is - allocated with all NULs happens to be STRING_LIST_INIT_NODUP kind, - initialize them explicitly as such, to document their behaviour - better. + * Instead of taking advantage of the fact that a struct string_list + that is allocated with all NULs happens to be the INIT_NODUP kind, + the users of string_list structures are taught to initialize them + explicitly as such, to document their behaviour better. (merge 2721ce2 jk/string-list-static-init later to maint). * HTTPd tests learned to show the server error log to help diagnosing @@ -133,7 +180,7 @@ Performance, Internal Implementation, Development Support etc. the standard output and the standard error of an external process, which is cumbersome to hand-roll correctly without deadlocking. - The codepath to sign data in a prepared buffer with GPG has been + * The codepath to sign data in a prepared buffer with GPG has been updated to use this API to read from the status-fd to check for errors (instead of relying on GPG's exit status). (merge efee955 jk/gpg-interface-cleanup later to maint). @@ -141,6 +188,134 @@ Performance, Internal Implementation, Development Support etc. * Allow t/perf framework to use the features from the most recent version of Git even when testing an older installed version. + * The commands in the "log/diff" family have had an FILE* pointer in the + data structure they pass around for a long time, but some codepaths + used to always write to the standard output. As a preparatory step + to make "git format-patch" available to the internal callers, these + codepaths have been updated to consistently write into that FILE* + instead. + + * Conversion from unsigned char sha1[20] to struct object_id + continues. + + * Improve the look of the way "git fetch" reports what happened to + each ref that was fetched. + + * The .c/.h sources are marked as such in our .gitattributes file so + that "git diff -W" and friends would work better. + + * Code clean-up to avoid using a variable string that compilers may + feel untrustable as printf-style format given to write_file() + helper function. + + * "git p4" used a location outside $GIT_DIR/refs/ to place its + temporary branches, which has been moved to refs/git-p4-tmp/. + + * Existing autoconf generated test for the need to link with pthread + library did not check all the functions from pthread libraries; + recent FreeBSD has some functions in libc but not others, and we + mistakenly thought linking with libc is enough when it is not. + + * When "git fsck" reports a broken link (e.g. a tree object contains + a blob that does not exist), both containing object and the object + that is referred to were reported with their 40-hex object names. + The command learned the "--name-objects" option to show the path to + the containing object from existing refs (e.g. "HEAD~24^2:file.txt"). + + * Allow http daemon tests in Travis CI tests. + + * Makefile assumed that -lrt is always available on platforms that + want to use clock_gettime() and CLOCK_MONOTONIC, which is not a + case for recent Mac OS X. The necessary symbols are often found in + libc on many modern systems and having -lrt on the command line, as + long as the library exists, had no effect, but when the platform + removes librt.a that is a different matter--having -lrt will break + the linkage. + + This change could be seen as a regression for those who do need to + specify -lrt, as they now specifically ask for NEEDS_LIBRT when + building. Hopefully they are in the minority these days. + + * Further preparatory work on the refs API before the pluggable + backend series can land. + + * Error handling in the codepaths that updates refs has been + improved. + + * The API to iterate over all the refs (i.e. for_each_ref(), etc.) + has been revamped. + + * The handling of the "text=auto" attribute has been corrected. + $ echo "* text=auto eol=crlf" >.gitattributes + used to have the same effect as + $ echo "* text eol=crlf" >.gitattributes + i.e. declaring all files are text (ignoring "auto"). The + combination has been fixed to be equivalent to doing + $ git config core.autocrlf true + + * Documentation has been updated to show better example usage + of the updated "text=auto" attribute. + + * A few tests that specifically target "git rebase -i" have been + added. + + * Dumb http transport on the client side has been optimized. + (merge ecba195 ew/http-walker later to maint). + + * Users of the parse_options_concat() API function need to allocate + extra slots in advance and fill them with OPT_END() when they want + to decide the set of supported options dynamically, which makes the + code error-prone and hard to read. This has been corrected by tweaking + the API to allocate and return a new copy of "struct option" array. + + * "git fetch" exchanges batched have/ack messages between the sender + and the receiver, initially doubling every time and then falling + back to enlarge the window size linearly. The "smart http" + transport, being an half-duplex protocol, outgrows the preset limit + too quickly and becomes inefficient when interacting with a large + repository. The internal mechanism learned to grow the window size + more aggressively when working with the "smart http" transport. + + * Tests for "git svn" have been taught to reuse the lib-httpd test + infrastructure when testing the subversion integration that + interacts with subversion repositories served over the http:// + protocol. + (merge a8a5d25 ew/git-svn-http-tests later to maint). + + * "git pack-objects" has a few options that tell it not to pack + objects found in certain packfiles, which require it to scan .idx + files of all available packs. The codepaths involved in these + operations have been optimized for a common case of not having any + non-local pack and/or any .kept pack. + + * The t3700 test about "add --chmod=-x" have been made a bit more + robust and generally cleaned up. + (merge 766cdc4 ib/t3700-add-chmod-x-updates later to maint). + + * The build procedure learned PAGER_ENV knob that lists what default + environment variable settings to export for popular pagers. This + mechanism is used to tweak the default settings to MORE on FreeBSD. + (merge 995bc22 ew/build-time-pager-tweaks later to maint). + + * The http-backend (the server-side component of smart-http + transport) used to trickle the HTTP header one at a time. Now + these write(2)s are batched. + (merge b36045c ew/http-backend-batch-headers later to maint). + + * When "git rebase" tries to compare set of changes on the updated + upstream and our own branch, it computes patch-id for all of these + changes and attempts to find matches. This has been optimized by + lazily computing the full patch-id (which is expensive) to be + compared only for changes that touch the same set of paths. + (merge ba67504 kw/patch-ids-optim later to maint). + + * A handful of tests that were broken under gettext-poison build have + been fixed. + + * The recent i18n patch we added during this cycle did a bit too much + refactoring of the messages to avoid word-legos; the repetition has + been reduced to help translators. + Also contains various documentation updates and code clean-ups. @@ -221,7 +396,6 @@ notes for details). bogus offset value to the caller. Use a more benign looking +0000 instead and let "git log" going in such a case, instead of aborting. - (merge bab7483 jk/tzoffset-fix later to maint). * One among four invocations of readlink(1) in our test suite has been rewritten so that the test can run on systems without the @@ -244,46 +418,258 @@ notes for details). finds its subject line did not ignore leading blank lines, as is commonly done by other codepaths. Make it ignore leading blank lines to match. - (merge 054a5ae js/find-commit-subject-ignore-leading-blanks later to maint). * For a long time, we carried an in-code comment that said our colored output would work only when we use fprintf/fputs on Windows, which no longer is the case for the past few years. - (merge 3d0a833 js/color-on-windows-comment later to maint). * "gc.autoPackLimit" when set to 1 should not trigger a repacking when there is only one pack, but the code counted poorly and did so. - (merge 5f4e3bf ew/gc-auto-pack-limit-fix later to maint). * Add a test to specify the desired behaviour that currently is not available in "git rebase -Xsubtree=...". - (merge 5f35900 dg/subtree-rebase-test later to maint). * More mark-up updates to typeset strings that are expected to literally typed by the end user in fixed-width font. - (merge 661c3e9 mm/doc-tt later to maint). * "git commit --amend --allow-empty-message -S" for a commit without any message body could have misidentified where the header of the commit object ends. - (merge 3324dd8 js/sign-empty-commit-fix later to maint). * "git rebase -i --autostash" did not restore the auto-stashed change when the operation was aborted. - (merge 33ba9c6 ps/rebase-i-auto-unstash-upon-abort later to maint). * Git does not know what the contents in the index should be for a path added with "git add -N" yet, so "git grep --cached" should not show hits (or show lack of hits, with -L) in such a path, but that logic does not apply to "git grep", i.e. searching in the working tree files. But we did so by mistake, which has been corrected. - (merge b8e47d1 nd/ita-cleanup later to maint). + + * "git blame -M" missed a single line that was moved within the file. + + * Fix recently introduced codepaths that are involved in parallel + submodule operations, which gave up on reading too early, and + could have wasted CPU while attempting to write under a corner + case condition. + + * "git grep -i" has been taught to fold case in non-ascii locales + correctly. + + * A test that unconditionally used "mktemp" learned that the command + is not necessarily available everywhere. + + * There are certain house-keeping tasks that need to be performed at + the very beginning of any Git program, and programs that are not + built-in commands had to do them exactly the same way as "git" + potty does. It was easy to make mistakes in one-off standalone + programs (like test helpers). A common "main()" function that + calls cmd_main() of individual program has been introduced to + make it harder to make mistakes. + (merge de61ceb jk/common-main later to maint). + + * The test framework learned a new helper test_match_signal to + check an exit code from getting killed by an expected signal. + + * General code clean-up around a helper function to write a + single-liner to a file. + (merge 7eb6e10 jk/write-file later to maint). + + * One part of "git am" had an oddball helper function that called + stuff from outside "his" as opposed to calling what we have "ours", + which was not gender-neutral and also inconsistent with the rest of + the system where outside stuff is usuall called "theirs" in + contrast to "ours". + + * "git blame file" allowed the lineage of lines in the uncommitted, + unadded contents of "file" to be inspected, but it refused when + "file" did not appear in the current commit. When "file" was + created by renaming an existing file (but the change has not been + committed), this restriction was unnecessarily tight. + + * "git add -N dir/file && git write-tree" produced an incorrect tree + when there are other paths in the same directory that sorts after + "file". + + * "git fetch http://user:pass@host/repo..." scrubbed the userinfo + part, but "git push" didn't. + + * "git merge" with renormalization did not work well with + merge-recursive, due to "safer crlf" conversion kicking in when it + shouldn't. + (merge 1335d76 jc/renormalize-merge-kill-safer-crlf later to maint). + + * The use of strbuf in "git rm" to build filename to remove was a bit + suboptimal, which has been fixed. + + * An age old bug that caused "git diff --ignore-space-at-eol" + misbehave has been fixed. + + * "git notes merge" had a code to see if a path exists (and fails if + it does) and then open the path for writing (when it doesn't). + Replace it with open with O_EXCL. + + * "git pack-objects" and "git index-pack" mostly operate with off_t + when talking about the offset of objects in a packfile, but there + were a handful of places that used "unsigned long" to hold that + value, leading to an unintended truncation. + + * Recent update to "git daemon" tries to enable the socket-level + KEEPALIVE, but when it is spawned via inetd, the standard input + file descriptor may not necessarily be connected to a socket. + Suppress an ENOTSOCK error from setsockopt(). + + * Recent FreeBSD stopped making perl available at /usr/bin/perl; + switch the default the built-in path to /usr/local/bin/perl on not + too ancient FreeBSD releases. + + * "git commit --help" said "--no-verify" is only about skipping the + pre-commit hook, and failed to say that it also skipped the + commit-msg hook. + + * "git merge" in Git v2.9 was taught to forbid merging an unrelated + lines of history by default, but that is exactly the kind of thing + the "--rejoin" mode of "git subtree" (in contrib/) wants to do. + "git subtree" has been taught to use the "--allow-unrelated-histories" + option to override the default. + + * The build procedure for "git persistent-https" helper (in contrib/) + has been updated so that it can be built with more recent versions + of Go. + + * There is an optimization used in "git diff $treeA $treeB" to borrow + an already checked-out copy in the working tree when it is known to + be the same as the blob being compared, expecting that open/mmap of + such a file is faster than reading it from the object store, which + involves inflating and applying delta. This however kicked in even + when the checked-out copy needs to go through the convert-to-git + conversion (including the clean filter), which defeats the whole + point of the optimization. The optimization has been disabled when + the conversion is necessary. + + * "git -c grep.patternType=extended log --basic-regexp" misbehaved + because the internal API to access the grep machinery was not + designed well. + + * Windows port was failing some tests in t4130, due to the lack of + inum in the returned values by its lstat(2) emulation. + + * The reflog output format is documented better, and a new format + --date=unix to report the seconds-since-epoch (without timezone) + has been added. + (merge 442f6fd jk/reflog-date later to maint). + + * "git difftool <paths>..." started in a subdirectory failed to + interpret the paths relative to that directory, which has been + fixed. + + * The characters in the label shown for tags/refs for commits in + "gitweb" output are now properly escaped for proper HTML output. + + * FreeBSD can lie when asked mtime of a directory, which made the + untracked cache code to fall back to a slow-path, which in turn + caused tests in t7063 to fail because it wanted to verify the + behaviour of the fast-path. + + * Squelch compiler warnings for nedmalloc (in compat/) library. + + * A small memory leak in the command line parsing of "git blame" + has been plugged. + + * The API documentation for hashmap was unclear if hashmap_entry + can be safely discarded without any other consideration. State + that it is safe to do so. + + * Not-so-recent rewrite of "git am" that started making internal + calls into the commit machinery had an unintended regression, in + that no matter how many seconds it took to apply many patches, the + resulting committer timestamp for the resulting commits were all + the same. + + * "git push --force-with-lease" already had enough logic to allow + ensuring that such a push results in creation of a ref (i.e. the + receiving end did not have another push from sideways that would be + discarded by our force-pushing), but didn't expose this possibility + to the users. It does so now. + (merge 9eed4f3 jk/push-force-with-lease-creation later to maint). + + * The mechanism to limit the pack window memory size, when packing is + done using multiple threads (which is the default), is per-thread, + but this was not documented clearly. + (merge 954176c ms/document-pack-window-memory-is-per-thread later to maint). + + * "import-tars" fast-import script (in contrib/) used to ignore a + hardlink target and replaced it with an empty file, which has been + corrected to record the same blob as the other file the hardlink is + shared with. + (merge 04e0869 js/import-tars-hardlinks later to maint). + + * "git mv dir non-existing-dir/" did not work in some environments + the same way as existing mainstream platforms. The code now moves + "dir" to "non-existing-dir", without relying on rename("A", "B/") + that strips the trailing slash of '/'. + (merge 189d035 js/mv-dir-to-new-directory later to maint). + + * The "t/" hierarchy is prone to get an unusual pathname; "make test" + has been taught to make sure they do not contain paths that cannot + be checked out on Windows (and the mechanism can be reusable to + catch pathnames that are not portable to other platforms as need + arises). + (merge c2cafd3 js/test-lint-pathname later to maint). + + * When "git merge-recursive" works on history with many criss-cross + merges in "verbose" mode, the names the command assigns to the + virtual merge bases could have overwritten each other by unintended + reuse of the same piece of memory. + (merge 5447a76 rs/pull-signed-tag later to maint). + + * "git checkout --detach <branch>" used to give the same advice + message as that is issued when "git checkout <tag>" (or anything + that is not a branch name) is given, but asking with "--detach" is + an explicit enough sign that the user knows what is going on. The + advice message has been squelched in this case. + (merge 779b88a sb/checkout-explit-detach-no-advice later to maint). + + * "git difftool" by default ignores the error exit from the backend + commands it spawns, because often they signal that they found + differences by exiting with a non-zero status code just like "diff" + does; the exit status codes 126 and above however are special in + that they are used to signal that the command is not executable, + does not exist, or killed by a signal. "git difftool" has been + taught to notice these exit status codes. + (merge 45a4f5d jk/difftool-command-not-found later to maint). + + * On Windows, help.browser configuration variable used to be ignored, + which has been corrected. + (merge 6db5967 js/no-html-bypass-on-windows later to maint). + + * The "git -c var[=val] cmd" facility to append a configuration + variable definition at the end of the search order was described in + git(1) manual page, but not in git-config(1), which was more likely + place for people to look for when they ask "can I make a one-shot + override, and if so how?" + (merge ae1f709 dg/document-git-c-in-git-config-doc later to maint). + + * The tempfile (hence its user lockfile) API lets the caller to open + a file descriptor to a temporary file, write into it and then + finalize it by first closing the filehandle and then either + removing or renaming the temporary file. When the process spawns a + subprocess after obtaining the file descriptor, and if the + subprocess has not exited when the attempt to remove or rename is + made, the last step fails on Windows, because the subprocess has + the file descriptor still open. Open tempfile with O_CLOEXEC flag + to avoid this (on Windows, this is mapped to O_NOINHERIT). + (merge 05d1ed6 bw/mingw-avoid-inheriting-fd-to-lockfile later to maint). + + * Correct an age-old calco (is that a typo-like word for calc) + in the documentation. + (merge 7841c48 ls/packet-line-protocol-doc-fix later to maint). * Other minor clean-ups and documentation updates - (merge e51b0df pb/commit-editmsg-path later to maint). - (merge b333d0d jk/send-pack-stdio later to maint). - (merge fcf0fe9 lf/sideband-returns-void later to maint). - (merge c2691e2 ah/unpack-trees-advice-messages later to maint). - (merge 82f6178 nd/doc-new-command later to maint). - (merge fa90ab4 js/t3404-grammo-fix later to maint). + (merge 02a8cfa rs/merge-add-strategies-simplification later to maint). + (merge af4941d rs/merge-recursive-string-list-init later to maint). + (merge 1eb47f1 rs/use-strbuf-add-unique-abbrev later to maint). + (merge ddd0bfa jk/tighten-alloc later to maint). + (merge ecf30b2 rs/mailinfo-lib later to maint). + (merge 0eb75ce sg/reflog-past-root later to maint). + (merge 4369523 hv/doc-commit-reference-style later to maint). |