1Git 2.21 Release Notes 2====================== 3 4Backward Compatibility Notes 5---------------------------- 6 7 8Updates since v2.20 9------------------- 10 11UI, Workflows & Features 12 13 * The "http.version" configuration variable can be used with recent 14 enough cURL library to force the version of HTTP used to talk when 15 fetching and pushing. 16 17 * Small fixes and features for fast-export and fast-import, mostly on 18 the fast-export side. 19 20 * "git push $there $src:$dst" rejects when $dst is not a fully 21 qualified refname and not clear what the end user meant. The 22 codepath has been taught to give a clearer error message, and also 23 guess where the push should go by taking the type of the pushed 24 object into account (e.g. a tag object would want to go under 25 refs/tags/). 26 27 * "git checkout [<tree-ish>] path..." learned to report the number of 28 paths that have been checked out of the index or the tree-ish, 29 which gives it the same degree of noisy-ness as the case in which 30 the command checks out a branch. 31 32 * "git quiltimport" learned "--keep-non-patch" option. 33 34 * "git worktree remove" and "git worktree move" refused to work when 35 there is a submodule involved. This has been loosened to ignore 36 uninitialized submodules. 37 38 * "git cherry-pick -m1" was forbidden when picking a non-merge 39 commit, even though there _is_ parent number 1 for such a commit. 40 This was done to avoid mistakes back when "cherry-pick" was about 41 picking a single commit, but is no longer useful with "cherry-pick" 42 that can pick a range of commits. Now the "-m$num" option is 43 allowed when picking any commit, as long as $num names an existing 44 parent of the commit. 45 46 * Update "git multimail" from the upstream. 47 48 * "git p4" update. 49 50 * The "--format=<placeholder>" option of for-each-ref, branch and tag 51 learned to show a few more traits of objects that can be learned by 52 the object_info API. 53 54 * "git rebase -i" learned to re-execute a command given with 'exec' 55 to run after it failed the last time. 56 57 * "git diff --color-moved-ws" updates. 58 59 * Custom userformat "log --format" learned %S atom that stands for 60 the tip the traversal reached the commit from, i.e. --source. 61 62 63Performance, Internal Implementation, Development Support etc. 64 65 * Code clean-up with optimization for the codepath that checks 66 (non-)existence of loose objects. 67 68 * More codepaths become aware of working with in-core repository 69 instance other than the default "the_repository". 70 71 * The "strncat()" function is now among the banned functions. 72 73 * Portability updates for the HPE NonStop platform. 74 75 * Earlier we added "-Wformat-security" to developer builds, assuming 76 that "-Wall" (which includes "-Wformat" which in turn is required 77 to use "-Wformat-security") is always in effect. This is not true 78 when config.mak.autogen is in use, unfortunately. This has been 79 fixed by unconditionally adding "-Wall" to developer builds. 80 81 * The loose object cache used to optimize existence look-up has been 82 updated. 83 84 * Flaky tests can now be repeatedly run under load with the 85 "--stress" option. 86 (merge fb7d1e3ac8 sg/stress-test later to maint). 87 88 * Documentation/Makefile is getting prepared for manpage 89 localization. 90 91 * "git fetch-pack" now can talk the version 2 protocol. 92 93 * sha-256 hash has been added and plumbed through the code to allow 94 building Git with the "NewHash". 95 96 * Debugging help for http transport. 97 98 * "git fetch --deepen=<more>" has been corrected to work over v2 99 protocol. 100 101 * The code to walk tree objects has been taught that we may be 102 working with object names that are not computed with SHA-1. 103 104 105Fixes since v2.20 106----------------- 107 108 * Updates for corner cases in merge-recursive. 109 (merge cc4cb0902c en/merge-path-collision later to maint). 110 111 * "git checkout frotz" (without any double-dash) avoids ambiguity by 112 making sure 'frotz' cannot be interpreted as a revision and as a 113 path at the same time. This safety has been updated to check also 114 a unique remote-tracking branch 'frotz' in a remote, when dwimming 115 to create a local branch 'frotz' out of a remote-tracking branch 116 'frotz' from a remote. 117 (merge be4908f103 nd/checkout-dwim-fix later to maint). 118 119 * Refspecs configured with "git -c var=val clone" did not propagate 120 to the resulting repository, which has been corrected. 121 (merge 7eae4a3ac4 sg/clone-initial-fetch-configuration later to maint). 122 123 * A properly configured username/email is required under 124 user.useConfigOnly in order to create commits; now "git stash" 125 (even though it creates commit objects to represent stash entries) 126 command is exempt from the requirement. 127 (merge 3bc2111fc2 sd/stash-wo-user-name later to maint). 128 129 * The http-backend CGI process did not correctly clean up the child 130 processes it spawns to run upload-pack etc. when it dies itself, 131 which has been corrected. 132 (merge 02818a98d7 mk/http-backend-kill-children-before-exit later to maint). 133 134 * "git rev-list --exclude-promisor-objects" had to take an object 135 that does not exist locally (and is lazily available) from the 136 command line without barfing, but the code dereferenced NULL. 137 (merge 4cf67869b2 md/list-lazy-objects-fix later to maint). 138 139 * The traversal over tree objects has learned to honor 140 ":(attr:label)" pathspec match, which has been implemented only for 141 enumerating paths on the filesystem. 142 (merge 5a0b97b34c nd/attr-pathspec-in-tree-walk later to maint). 143 144 * BSD port updates. 145 (merge 4e3ecbd439 cb/openbsd-allows-reading-directory later to maint). 146 (merge b6bdc2a0f5 cb/t5004-empty-tar-archive-fix later to maint). 147 (merge 82cbc8cde2 cb/test-lint-cp-a later to maint). 148 149 * Lines that begin with a certain keyword that come over the wire, as 150 well as lines that consist only of one of these keywords, ought to 151 be painted in color for easier eyeballing, but the latter was 152 broken ever since the feature was introduced in 2.19, which has 153 been corrected. 154 (merge 1f67290450 hn/highlight-sideband-keywords later to maint). 155 156 * "git log -G<regex>" looked for a hunk in the "git log -p" patch 157 output that contained a string that matches the given pattern. 158 Optimize this code to ignore binary files, which by default will 159 not show any hunk that would match any pattern (unless textconv or 160 the --text option is in effect, that is). 161 (merge e0e7cb8080 tb/log-G-binary later to maint). 162 163 * "git submodule update" ought to use a single job unless asked, but 164 by mistake used multiple jobs, which has been fixed. 165 (merge e3a9d1aca9 sb/submodule-fetchjobs-default-to-one later to maint). 166 167 * "git stripspace" should be usable outside a git repository, but 168 under the "-s" or "-c" mode, it didn't. 169 (merge 957da75802 jn/stripspace-wo-repository later to maint). 170 171 * Some of the documentation pages formatted incorrectly with 172 Asciidoctor, which have been fixed. 173 (merge b62eb1d2f4 ma/asciidoctor later to maint). 174 175 * The core.worktree setting in a submodule repository should not be 176 pointing at a directory when the submodule loses its working tree 177 (e.g. getting deinit'ed), but the code did not properly maintain 178 this invariant. 179 180 * With zsh, "git cmd path<TAB>" was completed to "git cmd path name" 181 when the completed path has a special character like SP in it, 182 without any attempt to keep "path name" a single filename. This 183 has been fixed to complete it to "git cmd path\ name" just like 184 Bash completion does. 185 186 * The test suite tried to see if it is run under bash, but the check 187 itself failed under some other implementations of shell (notably 188 under NetBSD). This has been corrected. 189 (merge 54ea72f09c sg/test-bash-version-fix later to maint). 190 191 * "git gc" and "git repack" did not close the open packfiles that 192 they found unneeded before removing them, which didn't work on a 193 platform incapable of removing an open file. This has been 194 corrected. 195 (merge 5bdece0d70 js/gc-repack-close-before-remove later to maint). 196 197 * The code to drive GIT_EXTERNAL_DIFF command relied on the string 198 returned from getenv() to be non-volatile, which is not true, that 199 has been corrected. 200 (merge 6776a84dae kg/external-diff-save-env later to maint). 201 202 * There were many places the code relied on the string returned from 203 getenv() to be non-volatile, which is not true, that have been 204 corrected. 205 (merge 0da0e9268b jk/save-getenv-result later to maint). 206 207 * The v2 upload-pack protocol implementation failed to honor 208 hidden-ref configuration, which has been corrected. 209 (merge e20b4192a3 jk/proto-v2-hidden-refs-fix later to maint). 210 211 * "git fetch --recurse-submodules" may not fetch the necessary commit 212 that is bound to the superproject, which is getting corrected. 213 (merge be76c21282 sb/submodule-recursive-fetch-gets-the-tip later to maint). 214 215 * "git rebase" internally runs "checkout" to switch between branches, 216 and the command used to call the post-checkout hook, but the 217 reimplementation stopped doing so, which is getting fixed. 218 219 * "git add -e" got confused when the change it wants to let the user 220 edit is smaller than the previous change that was left over in a 221 temporary file. 222 (merge fa6f225e01 js/add-e-clear-patch-before-stating later to maint). 223 224 * Code cleanup, docfix, build fix, etc. 225 (merge 89ba9a79ae hb/t0061-dot-in-path-fix later to maint). 226 (merge d173e799ea sb/diff-color-moved-config-option-fixup later to maint). 227 (merge a8f5a59067 en/directory-renames-nothanks-doc-update later to maint). 228 (merge ec36c42a63 nd/indentation-fix later to maint). 229 (merge f116ee21cd do/gitweb-strict-export-conf-doc later to maint). 230 (merge 112ea42663 fd/gitweb-snapshot-conf-doc-fix later to maint). 231 (merge 1cadad6f65 tb/use-common-win32-pathfuncs-on-cygwin later to maint). 232 (merge 57e9dcaa65 km/rebase-doc-typofix later to maint). 233 (merge b8b4cb27e6 ds/gc-doc-typofix later to maint). 234 (merge 3b3357626e nd/style-opening-brace later to maint). 235 (merge b4583d5595 es/doc-worktree-guessremote-config later to maint). 236 (merge cce99cd8c6 ds/commit-graph-assert-missing-parents later to maint). 237 (merge 0650614982 cy/completion-typofix later to maint). 238 (merge 6881925ef5 rs/sha1-file-close-mapped-file-on-error later to maint). 239 (merge bd8d6f0def en/show-ref-doc-fix later to maint). 240 (merge 1747125e2c cc/parial-clone-doc-typofix later to maint). 241 (merge e01378753d cc/fetch-error-message-fix later to maint). 242 (merge 54e8c11215 jk/remote-insteadof-cleanup later to maint).