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diff --git a/Documentation/RelNotes/2.21.0.txt b/Documentation/RelNotes/2.21.0.txt deleted file mode 100644 index 7a49deddf32a..000000000000 --- a/Documentation/RelNotes/2.21.0.txt +++ /dev/null @@ -1,451 +0,0 @@ -Git 2.21 Release Notes -====================== - -Backward Compatibility Notes ----------------------------- - - * Historically, the "-m" (mainline) option can only be used for "git - cherry-pick" and "git revert" when working with a merge commit. - This version of Git no longer warns or errors out when working with - a single-parent commit, as long as the argument to the "-m" option - is 1 (i.e. it has only one parent, and the request is to pick or - revert relative to that first parent). Scripts that relied on the - behaviour may get broken with this change. - - -Updates since v2.20 -------------------- - -UI, Workflows & Features - - * The "http.version" configuration variable can be used with recent - enough versions of cURL library to force the version of HTTP used - to talk when fetching and pushing. - - * Small fixes and features for fast-export and fast-import, mostly on - the fast-export side has been made. - - * "git push $there $src:$dst" rejects when $dst is not a fully - qualified refname and it is not clear what the end user meant. The - codepath has been taught to give a clearer error message, and also - guess where the push should go by taking the type of the pushed - object into account (e.g. a tag object would want to go under - refs/tags/). - - * "git checkout [<tree-ish>] path..." learned to report the number of - paths that have been checked out of the index or the tree-ish, - which gives it the same degree of noisy-ness as the case in which - the command checks out a branch. "git checkout -m <pathspec>" to - undo conflict resolution gives a similar message. - - * "git quiltimport" learned "--keep-non-patch" option. - - * "git worktree remove" and "git worktree move" refused to work when - there is a submodule involved. This has been loosened to ignore - uninitialized submodules. - - * "git cherry-pick -m1" was forbidden when picking a non-merge - commit, even though there _is_ parent number 1 for such a commit. - This was done to avoid mistakes back when "cherry-pick" was about - picking a single commit, but is no longer useful with "cherry-pick" - that can pick a range of commits. Now the "-m$num" option is - allowed when picking any commit, as long as $num names an existing - parent of the commit. - - * Update "git multimail" from the upstream. - - * "git p4" update. - - * The "--format=<placeholder>" option of for-each-ref, branch and tag - learned to show a few more traits of objects that can be learned by - the object_info API. - - * "git rebase -i" learned to re-execute a command given with 'exec' - to run after it failed the last time. - - * "git diff --color-moved-ws" updates. - - * Custom userformat "log --format" learned %S atom that stands for - the tip the traversal reached the commit from, i.e. --source. - - * "git instaweb" learned to drive http.server that comes with - "batteries included" Python installation (both Python2 & 3). - - * A new encoding UTF-16LE-BOM has been invented to force encoding to - UTF-16 with BOM in little endian byte order, which cannot be directly - generated by using iconv. - - * A new date format "--date=human" that morphs its output depending - on how far the time is from the current time has been introduced. - "--date=auto:human" can be used to use this new format (or any - existing format) when the output is going to the pager or to the - terminal, and otherwise the default format. - - -Performance, Internal Implementation, Development Support etc. - - * Code clean-up with optimization for the codepath that checks - (non-)existence of loose objects. - - * More codepaths have become aware of working with in-core repository - instances other than the default "the_repository". - - * The "strncat()" function is now among the banned functions. - - * Portability updates for the HPE NonStop platform. - - * Earlier we added "-Wformat-security" to developer builds, assuming - that "-Wall" (which includes "-Wformat" which in turn is required - to use "-Wformat-security") is always in effect. This is not true - when config.mak.autogen is in use, unfortunately. This has been - fixed by unconditionally adding "-Wall" to developer builds. - - * The loose object cache used to optimize existence look-up has been - updated. - - * Flaky tests can now be repeatedly run under load with the - "--stress" option. - - * Documentation/Makefile is getting prepared for manpage - localization. - - * "git fetch-pack" now can talk the version 2 protocol. - - * sha-256 hash has been added and plumbed through the code to allow - building Git with the "NewHash". - - * Debugging help for http transport. - - * "git fetch --deepen=<more>" has been corrected to work over v2 - protocol. - - * The code to walk tree objects has been taught that we may be - working with object names that are not computed with SHA-1. - - * The in-core repository instances are passed through more codepaths. - - * Update the protocol message specification to allow only the limited - use of scaled quantities. This is to ensure potential compatibility - issues will not get out of hand. - - * Micro-optimize the code that prepares commit objects to be walked - by "git rev-list" when the commit-graph is available. - - * "git fetch" and "git upload-pack" learned to send all exchanges over - the sideband channel while talking the v2 protocol. - - * The codepath to write out commit-graph has been optimized by - following the usual pattern of visiting objects in in-pack order. - - * The codepath to show progress meter while writing out commit-graph - file has been improved. - - * Cocci rules have been updated to encourage use of strbuf_addbuf(). - - * "git rebase --merge" has been reimplemented by reusing the internal - machinery used for "git rebase -i". - - * More code in "git bisect" has been rewritten in C. - - * Instead of going through "git-rebase--am" scriptlet to use the "am" - backend, the built-in version of "git rebase" learned to drive the - "am" backend directly. - - * The assumption to work on the single "in-core index" instance has - been reduced from the library-ish part of the codebase. - - * The test lint learned to catch non-portable "sed" options. - - * "git pack-objects" learned another algorithm to compute the set of - objects to send, that trades the resulting packfile off to save - traversal cost to favor small pushes. - - * The travis CI scripts have been corrected to build Git with the - compiler(s) of our choice. - - * "git submodule update" learned to abort early when core.worktree - for the submodule is not set correctly to prevent spreading damage. - - * Test suite has been adjusted to run on Azure Pipeline. - - * Running "Documentation/doc-diff x" from anywhere other than the - top-level of the working tree did not show the usage string - correctly, which has been fixed. - - * Use of the sparse tool got easier to customize from the command - line to help developers. - - * A new target "coverage-prove" to run the coverage test under - "prove" has been added. - - * A flakey "p4" test has been removed. - - * The code and tests assume that the system supplied iconv() would - always use BOM in its output when asked to encode to UTF-16 (or - UTF-32), but apparently some implementations output big-endian - without BOM. A compile-time knob has been added to help such - systems (e.g. NonStop) to add BOM to the output to increase - portability. - - -Fixes since v2.20 ------------------ - - * Updates for corner cases in merge-recursive. - (merge cc4cb0902c en/merge-path-collision later to maint). - - * "git checkout frotz" (without any double-dash) avoids ambiguity by - making sure 'frotz' cannot be interpreted as a revision and as a - path at the same time. This safety has been updated to check also - a unique remote-tracking branch 'frotz' in a remote, when dwimming - to create a local branch 'frotz' out of a remote-tracking branch - 'frotz' from a remote. - (merge be4908f103 nd/checkout-dwim-fix later to maint). - - * Refspecs configured with "git -c var=val clone" did not propagate - to the resulting repository, which has been corrected. - (merge 7eae4a3ac4 sg/clone-initial-fetch-configuration later to maint). - - * A properly configured username/email is required under - user.useConfigOnly in order to create commits; now "git stash" - (even though it creates commit objects to represent stash entries) - command is exempt from the requirement. - (merge 3bc2111fc2 sd/stash-wo-user-name later to maint). - - * The http-backend CGI process did not correctly clean up the child - processes it spawns to run upload-pack etc. when it dies itself, - which has been corrected. - (merge 02818a98d7 mk/http-backend-kill-children-before-exit later to maint). - - * "git rev-list --exclude-promisor-objects" had to take an object - that does not exist locally (and is lazily available) from the - command line without barfing, but the code dereferenced NULL. - (merge 4cf67869b2 md/list-lazy-objects-fix later to maint). - - * The traversal over tree objects has learned to honor - ":(attr:label)" pathspec match, which has been implemented only for - enumerating paths on the filesystem. - (merge 5a0b97b34c nd/attr-pathspec-in-tree-walk later to maint). - - * BSD port updates. - (merge 4e3ecbd439 cb/openbsd-allows-reading-directory later to maint). - (merge b6bdc2a0f5 cb/t5004-empty-tar-archive-fix later to maint). - (merge 82cbc8cde2 cb/test-lint-cp-a later to maint). - - * Lines that begin with a certain keyword that come over the wire, as - well as lines that consist only of one of these keywords, ought to - be painted in color for easier eyeballing, but the latter was - broken ever since the feature was introduced in 2.19, which has - been corrected. - (merge 1f67290450 hn/highlight-sideband-keywords later to maint). - - * "git log -G<regex>" looked for a hunk in the "git log -p" patch - output that contained a string that matches the given pattern. - Optimize this code to ignore binary files, which by default will - not show any hunk that would match any pattern (unless textconv or - the --text option is in effect, that is). - (merge e0e7cb8080 tb/log-G-binary later to maint). - - * "git submodule update" ought to use a single job unless asked, but - by mistake used multiple jobs, which has been fixed. - (merge e3a9d1aca9 sb/submodule-fetchjobs-default-to-one later to maint). - - * "git stripspace" should be usable outside a git repository, but - under the "-s" or "-c" mode, it didn't. - (merge 957da75802 jn/stripspace-wo-repository later to maint). - - * Some of the documentation pages formatted incorrectly with - Asciidoctor, which have been fixed. - (merge b62eb1d2f4 ma/asciidoctor later to maint). - - * The core.worktree setting in a submodule repository should not be - pointing at a directory when the submodule loses its working tree - (e.g. getting deinit'ed), but the code did not properly maintain - this invariant. - - * With zsh, "git cmd path<TAB>" was completed to "git cmd path name" - when the completed path has a special character like SP in it, - without any attempt to keep "path name" a single filename. This - has been fixed to complete it to "git cmd path\ name" just like - Bash completion does. - - * The test suite tried to see if it is run under bash, but the check - itself failed under some other implementations of shell (notably - under NetBSD). This has been corrected. - (merge 54ea72f09c sg/test-bash-version-fix later to maint). - - * "git gc" and "git repack" did not close the open packfiles that - they found unneeded before removing them, which didn't work on a - platform incapable of removing an open file. This has been - corrected. - (merge 5bdece0d70 js/gc-repack-close-before-remove later to maint). - - * The code to drive GIT_EXTERNAL_DIFF command relied on the string - returned from getenv() to be non-volatile, which is not true, that - has been corrected. - (merge 6776a84dae kg/external-diff-save-env later to maint). - - * There were many places the code relied on the string returned from - getenv() to be non-volatile, which is not true, that have been - corrected. - (merge 0da0e9268b jk/save-getenv-result later to maint). - - * The v2 upload-pack protocol implementation failed to honor - hidden-ref configuration, which has been corrected. - (merge e20b4192a3 jk/proto-v2-hidden-refs-fix later to maint). - - * "git fetch --recurse-submodules" may not fetch the necessary commit - that is bound to the superproject, which is getting corrected. - (merge be76c21282 sb/submodule-recursive-fetch-gets-the-tip later to maint). - - * "git rebase" internally runs "checkout" to switch between branches, - and the command used to call the post-checkout hook, but the - reimplementation stopped doing so, which is getting fixed. - - * "git add -e" got confused when the change it wants to let the user - edit is smaller than the previous change that was left over in a - temporary file. - (merge fa6f225e01 js/add-e-clear-patch-before-stating later to maint). - - * "git p4" failed to update a shelved change when there were moved - files, which has been corrected. - (merge 7a10946ab9 ld/git-p4-shelve-update-fix later to maint). - - * The codepath to read from the commit-graph file attempted to read - past the end of it when the file's table-of-contents was corrupt. - - * The compat/obstack code had casts that -Wcast-function-type - compilation option found questionable. - (merge 764473d257 sg/obstack-cast-function-type-fix later to maint). - - * An obvious typo in an assertion error message has been fixed. - (merge 3c27e2e059 cc/test-ref-store-typofix later to maint). - - * In Git for Windows, "git clone \\server\share\path" etc. that uses - UNC paths from command line had bad interaction with its shell - emulation. - - * "git add --ignore-errors" did not work as advertised and instead - worked as an unintended synonym for "git add --renormalize", which - has been fixed. - (merge e2c2a37545 jk/add-ignore-errors-bit-assignment-fix later to maint). - - * On a case-insensitive filesystem, we failed to compare the part of - the path that is above the worktree directory in an absolute - pathname, which has been corrected. - - * Asking "git check-attr" about a macro (e.g. "binary") on a specific - path did not work correctly, even though "git check-attr -a" listed - such a macro correctly. This has been corrected. - (merge 7b95849be4 jk/attr-macro-fix later to maint). - - * "git pack-objects" incorrectly used uninitialized mutex, which has - been corrected. - (merge edb673cf10 ph/pack-objects-mutex-fix later to maint). - - * "git checkout -b <new> [HEAD]" to create a new branch from the - current commit and check it out ought to be a no-op in the index - and the working tree in normal cases, but there are corner cases - that do require updates to the index and the working tree. Running - it immediately after "git clone --no-checkout" is one of these - cases that an earlier optimization kicked in incorrectly, which has - been fixed. - (merge 8424bfd45b bp/checkout-new-branch-optim later to maint). - - * "git diff --color-moved --cc --stat -p" did not work well due to - funny interaction between a bug in color-moved and the rest, which - has been fixed. - (merge dac03b5518 jk/diff-cc-stat-fixes later to maint). - - * When GIT_SEQUENCE_EDITOR is set, the command was incorrectly - started when modes of "git rebase" that implicitly uses the - machinery for the interactive rebase are run, which has been - corrected. - (merge 891d4a0313 pw/no-editor-in-rebase-i-implicit later to maint). - - * The commit-graph facility did not work when in-core objects that - are promoted from unknown type to commit (e.g. a commit that is - accessed via a tag that refers to it) were involved, which has been - corrected. - (merge 4468d4435c sg/object-as-type-commit-graph-fix later to maint). - - * "git fetch" output cleanup. - (merge dc40b24df4 nd/fetch-compact-update later to maint). - - * "git cat-file --batch" reported a dangling symbolic link by - mistake, when it wanted to report that a given name is ambiguous. - - * Documentation around core.crlf has been updated. - (merge c9446f0504 jk/autocrlf-overrides-eol-doc later to maint). - - * The documentation of "git commit-tree" said that the command - understands "--gpg-sign" in addition to "-S", but the command line - parser did not know about the longhand, which has been corrected. - - * "git rebase -x $cmd" did not reject multi-line command, even though - the command is incapable of handling such a command. It now is - rejected upfront. - (merge c762aada1a pw/rebase-x-sanity-check later to maint). - - * Output from "git help" was not correctly aligned, which has been - fixed. - (merge 6195a76da4 nd/help-align-command-desc later to maint). - - * The "git submodule summary" subcommand showed shortened commit - object names by mechanically truncating them at 7-hexdigit, which - has been improved to let "rev-parse --short" scale the length of - the abbreviation with the size of the repository. - (merge 0586a438f6 sh/submodule-summary-abbrev-fix later to maint). - - * The way the OSX build jobs updates its build environment used the - "--quiet" option to "brew update" command, but it wasn't all that - quiet to be useful. The use of the option has been replaced with - an explicit redirection to the /dev/null (which incidentally would - have worked around a breakage by recent updates to homebrew, which - has fixed itself already). - (merge a1ccaedd62 sg/travis-osx-brew-breakage-workaround later to maint). - - * "git --work-tree=$there --git-dir=$here describe --dirty" did not - work correctly as it did not pay attention to the location of the - worktree specified by the user by mistake, which has been - corrected. - (merge c801170b0c ss/describe-dirty-in-the-right-directory later to maint). - - * "git fetch" over protocol v2 that needs to make a second connection - to backfill tags did not clear a variable that holds shallow - repository information correctly, leading to an access of freed - piece of memory. - - * Some errors from the other side coming over smart HTTP transport - were not noticed, which has been corrected. - - * Code cleanup, docfix, build fix, etc. - (merge 89ba9a79ae hb/t0061-dot-in-path-fix later to maint). - (merge d173e799ea sb/diff-color-moved-config-option-fixup later to maint). - (merge a8f5a59067 en/directory-renames-nothanks-doc-update later to maint). - (merge ec36c42a63 nd/indentation-fix later to maint). - (merge f116ee21cd do/gitweb-strict-export-conf-doc later to maint). - (merge 112ea42663 fd/gitweb-snapshot-conf-doc-fix later to maint). - (merge 1cadad6f65 tb/use-common-win32-pathfuncs-on-cygwin later to maint). - (merge 57e9dcaa65 km/rebase-doc-typofix later to maint). - (merge b8b4cb27e6 ds/gc-doc-typofix later to maint). - (merge 3b3357626e nd/style-opening-brace later to maint). - (merge b4583d5595 es/doc-worktree-guessremote-config later to maint). - (merge cce99cd8c6 ds/commit-graph-assert-missing-parents later to maint). - (merge 0650614982 cy/completion-typofix later to maint). - (merge 6881925ef5 rs/sha1-file-close-mapped-file-on-error later to maint). - (merge bd8d6f0def en/show-ref-doc-fix later to maint). - (merge 1747125e2c cc/partial-clone-doc-typofix later to maint). - (merge e01378753d cc/fetch-error-message-fix later to maint). - (merge 54e8c11215 jk/remote-insteadof-cleanup later to maint). - (merge d609615f48 js/test-git-installed later to maint). - (merge ba170517be ja/doc-style-fix later to maint). - (merge 86fb1c4e77 km/init-doc-typofix later to maint). - (merge 5cfd4a9d10 nd/commit-doc later to maint). - (merge 9fce19a431 ab/diff-tree-doc-fix later to maint). - (merge 2e285e7803 tz/gpg-test-fix later to maint). - (merge 5427de960b kl/pretty-doc-markup-fix later to maint). - (merge 3815f64b0d js/mingw-host-cpu later to maint). - (merge 5fe81438b5 rj/sequencer-sign-off-header-static later to maint). - (merge 18a4f6be6b nd/fileno-may-be-macro later to maint). - (merge 99e9ab54ab kd/t0028-octal-del-is-377-not-777 later to maint). |