1Git 2.23 Release Notes 2====================== 3 4Updates since v2.22 5------------------- 6 7Backward compatibility note 8 9 * The "--base" option of "format-patch" computed the patch-ids for 10 prerequisite patches in an unstable way, which has been updated to 11 compute in a way that is compatible with "git patch-id --stable". 12 13 14UI, Workflows & Features 15 16 * The "git fast-export/import" pair has been taught to handle commits 17 with log messages in encoding other than UTF-8 better. 18 19 * In recent versions of Git, per-worktree refs are exposed in 20 refs/worktrees/<wtname>/ hierarchy, which means that worktree names 21 must be a valid refname component. The code now sanitizes the names 22 given to worktrees, to make sure these refs are well-formed. 23 24 * "git merge" learned "--quit" option that cleans up the in-progress 25 merge while leaving the working tree and the index still in a mess. 26 27 * "git format-patch" learns a configuration to set the default for 28 its --notes=<ref> option. 29 30 * The code to show args with potential typo that cannot be 31 interpreted as a commit-ish has been improved. 32 33 * "git clone --recurse-submodules" learned to set up the submodules 34 to ignore commit object names recorded in the superproject gitlink 35 and instead use the commits that happen to be at the tip of the 36 remote-tracking branches from the get-go, by passing the new 37 "--remote-submodules" option. 38 39 * The pattern "git diff/grep" use to extract funcname and words 40 boundary for Matlab has been extend to cover Octave, which is more 41 or less equivalent. 42 43 * "git help git" was hard to discover (well, at least for some 44 people). 45 46 * The pattern "git diff/grep" use to extract funcname and words 47 boundary for Rust has been added. 48 49 * "git status" can be told a non-standard default value for the 50 "--[no-]ahead-behind" option with a new configuration variable 51 status.aheadBehind. 52 53 * "git fetch" and "git pull" reports when a fetch results in 54 non-fast-forward updates to let the user notice unusual situation. 55 The commands learned "--no-shown-forced-updates" option to disable 56 this safety feature. 57 58 * Two new commands "git switch" and "git restore" are introduced to 59 split "checking out a branch to work on advancing its history" and 60 "checking out paths out of the index and/or a tree-ish to work on 61 advancing the current history" out of the single "git checkout" 62 command. 63 64 * "git branch --list" learned to always output the detached HEAD as 65 the first item (when the HEAD is detached, of course), regardless 66 of the locale. 67 68 * The conditional inclusion mechanism learned to base the choice on 69 the branch the HEAD currently is on. 70 71 * "git rev-list --objects" learned with "--no-object-names" option to 72 squelch the path to the object that is used as a grouping hint for 73 pack-objects. 74 75 * A new tag.gpgSign configuration variable turns "git tag -a" into 76 "git tag -s". 77 78 * "git multi-pack-index" learned expire and repack subcommands. 79 80 * "git blame" learned to "ignore" commits in the history, whose 81 effects (as well as their presence) get ignored. 82 83 * "git cherry-pick/revert" learned a new "--skip" action. 84 85 * The tips of refs from the alternate object store can be used as 86 starting point for reachability computation now. 87 88 * Extra blank lines in "git status" output have been reduced. 89 90 * The commits in a repository can be described by multiple 91 commit-graph files now, which allows the commit-graph files to be 92 updated incrementally. 93 94 * The "git log" command learns to issue a warning when log.mailmap 95 configuration is not set and --[no-]mailmap option is not used, to 96 prepare users for future versions of Git that uses the mailmap by 97 default. 98 99 * "git range-diff" output has been tweaked for easier identification 100 of which part of what file the patch shown is about. 101 102 103Performance, Internal Implementation, Development Support etc. 104 105 * Update supporting parts of "git rebase" to remove code that should 106 no longer be used. 107 108 * Developer support to emulate unsatisfied prerequisites in tests to 109 ensure that the remainer of the tests still succeeds when tests 110 with prerequisites are skipped. 111 112 * "git update-server-info" learned not to rewrite the file with the 113 same contents. 114 115 * The way of specifying the path to find dynamic libraries at runtime 116 has been simplified. The old default to pass -R/path/to/dir has been 117 replaced with the new default to pass -Wl,-rpath,/path/to/dir, 118 which is the more recent GCC uses. Those who need to build with an 119 old GCC can still use "CC_LD_DYNPATH=-R" 120 121 * Prepare use of reachability index in topological walker that works 122 on a range (A..B). 123 124 * A new tutorial targetting specifically aspiring git-core 125 developers has been added. 126 127 * Auto-detect how to tell HP-UX aCC where to use dynamically linked 128 libraries from at runtime. 129 130 * "git mergetool" and its tests now spawn fewer subprocesses. 131 132 * Dev support update to help tracing out tests. 133 134 * Support to build with MSVC has been updated. 135 136 * "git fetch" that grabs from a group of remotes learned to run the 137 auto-gc only once at the very end. 138 139 * A handful of Windows build patches have been upstreamed. 140 141 * The code to read state files used by the sequencer machinery for 142 "git status" has been made more robust against a corrupt or stale 143 state files. 144 145 * "git for-each-ref" with multiple patterns have been optimized. 146 147 * The tree-walk API learned to pass an in-core repository 148 instance throughout more codepaths. 149 150 * When one step in multi step cherry-pick or revert is reset or 151 committed, the command line prompt script failed to notice the 152 current status, which has been improved. 153 154 * Many GIT_TEST_* environment variables control various aspects of 155 how our tests are run, but a few followed "non-empty is true, empty 156 or unset is false" while others followed the usual "there are a few 157 ways to spell true, like yes, on, etc., and also ways to spell 158 false, like no, off, etc." convention. 159 160 * Adjust the dir-iterator API and apply it to the local clone 161 optimization codepath. 162 163 * We have been trying out a few language features outside c89; the 164 coding guidelines document did not talk about them and instead had 165 a blanket ban against them. 166 167 * A test helper has been introduced to optimize preparation of test 168 repositories with many simple commits, and a handful of test 169 scripts have been updated to use it. 170 171 172Fixes since v2.22 173----------------- 174 175 * A relative pathname given to "git init --template=<path> <repo>" 176 ought to be relative to the directory "git init" gets invoked in, 177 but it instead was made relative to the repository, which has been 178 corrected. 179 180 * "git worktree add" used to fail when another worktree connected to 181 the same repository was corrupt, which has been corrected. 182 183 * The ownership rule for the file descriptor to fast-import remote 184 backend was mixed up, leading to unrelated file descriptor getting 185 closed, which has been fixed. 186 187 * A "merge -c" instruction during "git rebase --rebase-merges" should 188 give the user a chance to edit the log message, even when there is 189 otherwise no need to create a new merge and replace the existing 190 one (i.e. fast-forward instead), but did not. Which has been 191 corrected. 192 193 * Code cleanup and futureproof. 194 195 * More parameter validation. 196 197 * "git update-server-info" used to leave stale packfiles in its 198 output, which has been corrected. 199 200 * The server side support for "git fetch" used to show incorrect 201 value for the HEAD symbolic ref when the namespace feature is in 202 use, which has been corrected. 203 204 * "git am -i --resolved" segfaulted after trying to see a commit as 205 if it were a tree, which has been corrected. 206 207 * "git bundle verify" needs to see if prerequisite objects exist in 208 the receiving repository, but the command did not check if we are 209 in a repository upfront, which has been corrected. 210 211 * "git merge --squash" is designed to update the working tree and the 212 index without creating the commit, and this cannot be countermanded 213 by adding the "--commit" option; the command now refuses to work 214 when both options are given. 215 216 * The data collected by fsmonitor was not properly written back to 217 the on-disk index file, breaking t7519 tests occasionally, which 218 has been corrected. 219 220 * Update to Unicode 12.1 width table. 221 222 * The command line to invoke a "git cat-file" command from inside 223 "git p4" was not properly quoted to protect a caret and running a 224 broken command on Windows, which has been corrected. 225 226 * "git request-pull" learned to warn when the ref we ask them to pull 227 from in the local repository and in the published repository are 228 different. 229 230 * When creating a partial clone, the object filtering criteria is 231 recorded for the origin of the clone, but this incorrectly used a 232 hardcoded name "origin" to name that remote; it has been corrected 233 to honor the "--origin <name>" option. 234 235 * "git fetch" into a lazy clone forgot to fetch base objects that are 236 necessary to complete delta in a thin packfile, which has been 237 corrected. 238 239 * The filter_data used in the list-objects-filter (which manages a 240 lazily sparse clone repository) did not use the dynamic array API 241 correctly---'nr' is supposed to point at one past the last element 242 of the array in use. This has been corrected. 243 244 * The description about slashes in gitignore patterns (used to 245 indicate things like "anchored to this level only" and "only 246 matches directories") has been revamped. 247 248 * The URL decoding code has been updated to avoid going past the end 249 of the string while parsing %-<hex>-<hex> sequence. 250 251 * The list of for-each like macros used by clang-format has been 252 updated. 253 254 * "git branch --list" learned to show branches that are checked out 255 in other worktrees connected to the same repository prefixed with 256 '+', similar to the way the currently checked out branch is shown 257 with '*' in front. 258 (merge 6e9381469e nb/branch-show-other-worktrees-head later to maint). 259 260 * Code restructuring during 2.20 period broke fetching tags via 261 "import" based transports. 262 263 * The commit-graph file is now part of the "files that the runtime 264 may keep open file descriptors on, all of which would need to be 265 closed when done with the object store", and the file descriptor to 266 an existing commit-graph file now is closed before "gc" finalizes a 267 new instance to replace it. 268 269 * "git checkout -p" needs to selectively apply a patch in reverse, 270 which did not work well. 271 272 * Code clean-up to avoid signed integer wraparounds during binary search. 273 274 * "git interpret-trailers" always treated '#' as the comment 275 character, regardless of core.commentChar setting, which has been 276 corrected. 277 278 * "git stash show 23" used to work, but no more after getting 279 rewritten in C; this regression has been corrected. 280 281 * "git rebase --abort" used to leave refs/rewritten/ when concluding 282 "git rebase -r", which has been corrected. 283 284 * An incorrect list of options was cached after command line 285 completion failed (e.g. trying to complete a command that requires 286 a repository outside one), which has been corrected. 287 288 * The code to parse scaled numbers out of configuration files has 289 been made more robust and also easier to follow. 290 291 * The codepath to compute delta islands used to spew progress output 292 without giving the callers any way to squelch it, which has been 293 fixed. 294 295 * Protocol capabilities that go over wire should never be translated, 296 but it was incorrectly marked for translation, which has been 297 corrected. The output of protocol capabilities for debugging has 298 been tweaked a bit. 299 300 * Use "Erase in Line" CSI sequence that is already used in the editor 301 support to clear cruft in the progress output. 302 303 * "git submodule foreach" did not protect command line options passed 304 to the command to be run in each submodule correctly, when the 305 "--recursive" option was in use. 306 307 * The configuration variable rebase.rescheduleFailedExec should be 308 effective only while running an interactive rebase and should not 309 affect anything when running an non-interactive one, which was not 310 the case. This has been corrected. 311 312 * The "git clone" documentation refers to command line options in its 313 description in the short form; they have been replaced with long 314 forms to make them more recognisable. 315 316 * Generation of pack bitmaps are now disabled when .keep files exist, 317 as these are mutually exclusive features. 318 (merge 7328482253 ew/repack-with-bitmaps-by-default later to maint). 319 320 * "git rm" to resolve a conflicted path leaked an internal message 321 "needs merge" before actually removing the path, which was 322 confusing. This has been corrected. 323 324 * "git stash --keep-index" did not work correctly on paths that have 325 been removed, which has been fixed. 326 (merge b932f6a5e8 tg/stash-keep-index-with-removed-paths later to maint). 327 328 * Window 7 update ;-) 329 330 * A codepath that reads from GPG for signed object verification read 331 past the end of allocated buffer, which has been fixed. 332 333 * "git clean" silently skipped a path when it cannot lstat() it; now 334 it gives a warning. 335 336 * "git push --atomic" that goes over the transport-helper (namely, 337 the smart http transport) failed to prevent refs to be pushed when 338 it can locally tell that one of the ref update will fail without 339 having to consult the other end, which has been corrected. 340 341 * The internal diff machinery can be made to read out of bounds while 342 looking for --funcion-context line in a corner case, which has been 343 corrected. 344 (merge b777f3fd61 jk/xdiff-clamp-funcname-context-index later to maint). 345 346 * Other code cleanup, docfix, build fix, etc. 347 (merge fbec05c210 cc/test-oidmap later to maint). 348 (merge 7a06fb038c jk/no-system-includes-in-dot-c later to maint). 349 (merge 81ed2b405c cb/xdiff-no-system-includes-in-dot-c later to maint).