1Git 2.14 Release Notes 2====================== 3 4Backward compatibility notes. 5 6 * Use of an empty string as a pathspec element that is used for 7 'everything matches' is still warned and Git asks users to use a 8 more explicit '.' for that instead. The hope is that existing 9 users will not mind this change, and eventually the warning can be 10 turned into a hard error, upgrading the deprecation into removal of 11 this (mis)feature. That is not scheduled to happen in the upcoming 12 release (yet). 13 14 * Git now avoids blindly falling back to ".git" when the setup 15 sequence said we are _not_ in Git repository. A corner case that 16 happens to work right now may be broken by a call to die("BUG"). 17 We've tried hard to locate such cases and fixed them, but there 18 might still be cases that need to be addressed--bug reports are 19 greatly appreciated. 20 21 * The experiment to improve the hunk-boundary selection of textual 22 diff output has finished, and the "indent heuristics" has now 23 become the default. 24 25 26Updates since v2.13 27------------------- 28 29UI, Workflows & Features 30 31 * The colors in which "git status --short --branch" showed the names 32 of the current branch and its remote-tracking branch are now 33 configurable. 34 35 * "git clone" learned the "--no-tags" option not to fetch all tags 36 initially, and also set up the tagopt not to follow any tags in 37 subsequent fetches. 38 39 * "git archive --format=zip" learned to use zip64 extension when 40 necessary to go beyond the 4GB limit. 41 (merge 867e40ff3a rs/large-zip later to maint). 42 43 * "git reset" learned "--recurse-submodules" option. 44 45 * "git diff --submodule=diff" now recurses into nested submodules. 46 (merge 5a5221427c jk/diff-submodule-diff-inline later to maint). 47 48 * "git repack" learned to accept the --threads=<n> option and pass it 49 to pack-objects. 50 51 * "git send-email" learned to run sendemail-validate hook to inspect 52 and reject a message before sending it out. 53 (merge 177409e589 jt/send-email-validate-hook later to maint). 54 55 * There is no good reason why "git fetch $there $sha1" should fail 56 when the $sha1 names an object at the tip of an advertised ref, 57 even when the other side hasn't enabled allowTipSHA1InWant. 58 59 * The recently introduced "[includeIf "gitdir:$dir"] path=..." 60 mechansim has further been taught to take symlinks into account. 61 The directory "$dir" specified in "gitdir:$dir" may be a symlink to 62 a real location, not something that $(getcwd) may return. In such 63 a case, a realpath of "$dir" is compared with the real path of the 64 current repository to determine if the contents from the named path 65 should be included. 66 67 * Make the "indent" heuristics the default in "diff" and diff.indentHeuristics 68 configuration variable an escape hatch for those who do no want it. 69 70 * Many commands learned to pay attention to submodule.recurse 71 configuration. 72 73 * The convention for a command line is to follow "git cmdname 74 --options" with revisions followed by an optional "--" 75 disambiguator and then finally pathspecs. When "--" is not there, 76 we make sure early ones are all interpretable as revs (and do not 77 look like paths) and later ones are the other way around. A 78 pathspec with "magic" (e.g. ":/p/a/t/h" that matches p/a/t/h from 79 the top-level of the working tree, no matter what subdirectory you 80 are working from) are conservatively judged as "not a path", which 81 required disambiguation more often. The command line parser 82 learned to say "it's a pathspec" a bit more often when the syntax 83 looks like so. 84 (merge 2cb47ab695 jk/pathspec-magic-disambiguation later to maint). 85 86 * Update "perl-compatible regular expression" support to enable JIT 87 and also allow linking with the newer PCRE v2 library. 88 89 * "filter-branch" learned a pseudo filter "--setup" that can be used 90 to define a common function/variable that can be used by other 91 filters. 92 93 94Performance, Internal Implementation, Development Support etc. 95 96 * The default packed-git limit value has been raised on larger 97 platforms to save "git fetch" from a (recoverable) failure while 98 "gc" is running in parallel. 99 100 * Code to update the cache-tree has been tightened so that we won't 101 accidentally write out any 0{40} entry in the tree object. 102 (merge a96d3cc3f6 jk/no-null-sha1-in-cache-tree later to maint). 103 104 * Attempt to allow us notice "fishy" situation where we fail to 105 remove the temporary directory used during the test. 106 107 * Travis CI gained a task to format the documentation with both 108 AsciiDoc and AsciiDoctor. 109 110 * Some platforms have ulong that is smaller than time_t, and our 111 historical use of ulong for timestamp would mean they cannot 112 represent some timestamp that the platform allows. Invent a 113 separate and dedicated timestamp_t (so that we can distingiuish 114 timestamps and a vanilla ulongs, which along is already a good 115 move), and then declare uintmax_t is the type to be used as the 116 timestamp_t. 117 118 * We can trigger Windows auto-build tester (credits: Dscho & 119 Microsoft) from our existing Travis CI tester now. 120 121 * Conversion from uchar[20] to struct object_id continues. 122 123 * Simplify parse_pathspec() codepath and stop it from looking at the 124 default in-core index. 125 (merge 08de9151a8 bw/pathspec-sans-the-index later to maint). 126 127 * Add perf-test for wildmatch. 128 (merge 62ca75a6b9 ab/perf-wildmatch later to maint). 129 130 * Code from "conversion using external process" codepath has been 131 extracted to a separate sub-process.[ch] module. 132 (merge 4f2a2e9f0e bp/sub-process-convert-filter later to maint). 133 134 * When "git checkout", "git merge", etc. manipulates the in-core 135 index, various pieces of information in the index extensions are 136 discarded from the original state, as it is usually not the case 137 that they are kept up-to-date and in-sync with the operation on the 138 main index. The untracked cache extension is copied across these 139 operations now, which would speed up "git status" (as long as the 140 cache is properly invalidated). 141 142 * The internal implementation of "git grep" has seen some clean-up. 143 (merge 8df4c2953f ab/grep-preparatory-cleanup later to maint). 144 145 * Update the C style recommendation for notes for translators, as 146 recent versions of gettext tools can work with our style of 147 multi-line comments. 148 149 * The implementation of "ref" API around the "packed refs" have been 150 cleaned up, in preparation for further changes. 151 152 * The internal logic used in "git blame" has been libified to make it 153 easier to use by cgit. 154 155 * Our code often opens a path to an optional file, to work on its 156 contents when we can successfully open it. We can ignore a failure 157 to open if such an optional file does not exist, but we do want to 158 report a failure in opening for other reasons (e.g. we got an I/O 159 error, or the file is there, but we lack the permission to open). 160 161 The exact errors we need to ignore are ENOENT (obviously) and 162 ENOTDIR (less obvious). Instead of repeating comparison of errno 163 with these two constants, introduce a helper function to do so. 164 165 * We often try to open a file for reading whose existence is 166 optional, and silently ignore errors from open/fopen; report such 167 errors if they are not due to missing files. 168 169 * When an existing repository is used for t/perf testing, we first 170 create bit-for-bit copy of it, which may grab a transient state of 171 the repository and freeze it into the repository used for testing, 172 which then may cause Git operations to fail. Single out "the index 173 being locked" case and forcibly drop the lock from the copy. 174 175 * Three instances of the same helper function have been consolidated 176 to one. 177 (merge e0556a928f pc/dir-count-slashes later to maint). 178 179 * "fast-import" uses a default pack chain depth that is consistent 180 with other parts of the system. 181 182 183Also contains various documentation updates and code clean-ups. 184 185 186Fixes since v2.13 187----------------- 188 189Unless otherwise noted, all the fixes since v2.13 in the maintenance 190track are contained in this release (see the maintenance releases' 191notes for details). 192 193 * "git gc" did not interact well with "git worktree"-managed 194 per-worktree refs. 195 196 * "git cherry-pick" and other uses of the sequencer machinery 197 mishandled a trailer block whose last line is an incomplete line. 198 This has been fixed so that an additional sign-off etc. are added 199 after completing the existing incomplete line. 200 201 * The codepath in "git am" that is used when running "git rebase" 202 leaked memory held for the log message of the commits being rebased. 203 204 * "git clone --config var=val" is a way to populate the 205 per-repository configuration file of the new repository, but it did 206 not work well when val is an empty string. This has been fixed. 207 208 * Setting "log.decorate=false" in the configuration file did not take 209 effect in v2.13, which has been corrected. 210 211 * A few codepaths in "checkout" and "am" working on an unborn branch 212 tried to access an uninitialized piece of memory. 213 214 * The Web interface to gmane news archive is long gone, even though 215 the articles are still accessible via NTTP. Replace the links with 216 ones to public-inbox.org. Because their message identification is 217 based on the actual message-id, it is likely that it will be easier 218 to migrate away from it if/when necessary. 219 220 * The receive-pack program now makes sure that the push certificate 221 records the same set of push options used for pushing. 222 223 * Tests have been updated to pass under GETTEXT_POISON (a mechanism 224 to ensure that output strings that should not be translated are 225 not translated by mistake), and TravisCI is told to run them. 226 227 * "git checkout --recurse-submodules" did not quite work with a 228 submodule that itself has submodules. 229 230 * Plug some leaks and updates internal API used to implement the 231 split index feature to make it easier to avoid such a leak in the 232 future. 233 (merge de950c5773 nd/split-index-unshare later to maint). 234 235 * "pack-objects" can stream a slice of an existing packfile out when 236 the pack bitmap can tell that the reachable objects are all needed 237 in the output, without inspecting individual objects. This 238 strategy however would not work well when "--local" and other 239 options are in use, and need to be disabled. 240 241 * Fix memory leaks pointed out by Coverity (and people). 242 243 * "git read-tree -m" (no tree-ish) gave a nonsense suggestion "use 244 --empty if you want to clear the index". With "-m", such a request 245 will still fail anyway, as you'd need to name at least one tree-ish 246 to be merged. 247 248 * Make sure our tests would pass when the sources are checked out 249 with "platform native" line ending convention by default on 250 Windows. Some "text" files out tests use and the test scripts 251 themselves that are meant to be run with /bin/sh, ought to be 252 checked out with eol=LF even on Windows. 253 254 * Introduce the BUG() macro to improve die("BUG: ..."). 255 256 * Clarify documentation for include.path and includeIf.<condition>.path 257 configuration variables. 258 259 * Git sometimes gives an advice in a rhetorical question that does 260 not require an answer, which can confuse new users and non native 261 speakers. Attempt to rephrase them. 262 263 * A few http:// links that are redirected to https:// in the 264 documentation have been updated to https:// links. 265 266 * "git for-each-ref --format=..." with %(HEAD) in the format used to 267 resolve the HEAD symref as many times as it had processed refs, 268 which was wasteful, and "git branch" shared the same problem. 269 270 * Regression fix to topic recently merged to 'master'. 271 272 * The shell completion script (in contrib/) learned "git stash" has 273 a new "push" subcommand. 274 275 * "git interpret-trailers", when used as GIT_EDITOR for "git commit 276 -v", looked for and appended to a trailer block at the very end, 277 i.e. at the end of the "diff" output. The command has been 278 corrected to pay attention to the cut-mark line "commit -v" adds to 279 the buffer---the real trailer block should appear just before it. 280 281 * A test allowed both "git push" and "git receive-pack" on the other 282 end write their traces into the same file. This is OK on platforms 283 that allows atomically appending to a file opened with O_APPEND, 284 but on other platforms led to a mangled output, causing 285 intermittent test failures. This has been fixed by disabling 286 traces from "receive-pack" in the test. 287 288 * Tag objects, which are not reachable from any ref, that point at 289 missing objects were mishandled by "git gc" and friends (they 290 should silently be ignored instead) 291 292 * "git describe --contains" penalized light-weight tags so much that 293 they were almost never considered. Instead, give them about the 294 same chance to be considered as an annotated tag that is the same 295 age as the underlying commit would. 296 (merge ef1e74065c jc/name-rev-lw-tag later to maint). 297 298 * The "run-command" API implementation has been made more robust 299 against dead-locking in a threaded environment. 300 301 * A recent update to t5545-push-options.sh started skipping all the 302 tests in the script when a web server testing is disabled or 303 unavailable, not just the ones that require a web server. Non HTTP 304 tests have been salvaged to always run in this script. 305 306 * "git send-email" now uses Net::SMTP::SSL, which is obsolete, only 307 when needed. Recent versions of Net::SMTP can do TLS natively. 308 309 * "foo\bar\baz" in "git fetch foo\bar\baz", even though there is no 310 slashes in it, cannot be a nickname for a remote on Windows, as 311 that is likely to be a pathname on a local filesystem. 312 313 * "git clean -d" used to clean directories that has ignored files, 314 even though the command should not lose ignored ones without "-x". 315 "git status --ignored" did not list ignored and untracked files 316 without "-uall". These have been corrected. 317 318 * The result from "git diff" that compares two blobs, e.g. "git diff 319 $commit1:$path $commit2:$path", used to be shown with the full 320 object name as given on the command line, but it is more natural to 321 use the $path in the output and use it to look up .gitattributes. 322 (merge 30d005c020 jk/diff-blob later to maint). 323 324 * The "collision detecting" SHA-1 implementation shipped with 2.13 325 was quite broken on some big-endian platforms and/or platforms that 326 do not like unaligned fetches. Update to the upstream code which 327 has already fixed these issues. 328 329 * "git am -h" triggered a BUG(). 330 331 * The interaction of "url.*.insteadOf" and custom URL scheme's 332 whitelisting is now documented better. 333 334 * The timestamp of the index file is now taken after the file is 335 closed, to help Windows, on which a stale timestamp is reported by 336 fstat() on a file that is opened for writing and data was written 337 but not yet closed. 338 339 * "git pull --rebase --autostash" didn't auto-stash when the local history 340 fast-forwards to the upstream. 341 342 * A flaky test has been corrected. 343 (merge 7c2115aa07 jk/pack-idx-corruption-safety later to maint). 344 345 * "git $cmd -h" for builtin commands calls the implementation of the 346 command (i.e. cmd_$cmd() function) without doing any repository 347 set-up, and the commands that expect RUN_SETUP is done by the Git 348 potty needs to be prepared to show the help text without barfing. 349 (merge d691551192 jk/consistent-h later to maint). 350 351 * Help contributors that visit us at GitHub. 352 (merge 0b1bb0c032 ls/github later to maint). 353 354 * "git stash push <pathspec>" did not work from a subdirectory at all. 355 Bugfix for a topic in v2.13 356 (merge 22fc703ec9 ps/stash-push-pathspec-fix later to maint). 357 358 * As there is no portable way to pass timezone information to 359 strftime, some output format from "git log" and friends are 360 impossible to produce. Teach our own strbuf_addftime to replace %z 361 and %Z with caller-supplied values to help working around this. 362 (merge 6eced3ec5e rs/strbuf-addftime-zZ later to maint). 363 364 * Other minor doc, test and build updates and code cleanups. 365 (merge 8ba74bfd7c jc/diff-tree-stale-comment later to maint). 366 (merge 68602c01fd sb/submodule-rm-absorb later to maint). 367 (merge 68241cb9dd sb/t4005-modernize later to maint). 368 (merge ae52d57f0b km/test-mailinfo-b-failure later to maint). 369 (merge 8b1d9136e1 sg/revision-parser-skip-prefix later to maint). 370 (merge bb8efa1772 sd/t3200-branch-m-test later to maint).