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 74Performance, Internal Implementation, Development Support etc. 75 76 * The default packed-git limit value has been raised on larger 77 platforms to save "git fetch" from a (recoverable) failure while 78 "gc" is running in parallel. 79 80 * Code to update the cache-tree has been tightened so that we won't 81 accidentally write out any 0{40} entry in the tree object. 82 (merge a96d3cc3f6 jk/no-null-sha1-in-cache-tree later to maint). 83 84 * Attempt to allow us notice "fishy" situation where we fail to 85 remove the temporary directory used during the test. 86 87 * Travis CI gained a task to format the documentation with both 88 AsciiDoc and AsciiDoctor. 89 90 * Some platforms have ulong that is smaller than time_t, and our 91 historical use of ulong for timestamp would mean they cannot 92 represent some timestamp that the platform allows. Invent a 93 separate and dedicated timestamp_t (so that we can distingiuish 94 timestamps and a vanilla ulongs, which along is already a good 95 move), and then declare uintmax_t is the type to be used as the 96 timestamp_t. 97 98 * We can trigger Windows auto-build tester (credits: Dscho & 99 Microsoft) from our existing Travis CI tester now. 100 101 * Conversion from uchar[20] to struct object_id continues. 102 103 * Simplify parse_pathspec() codepath and stop it from looking at the 104 default in-core index. 105 (merge 08de9151a8 bw/pathspec-sans-the-index later to maint). 106 107 * Add perf-test for wildmatch. 108 (merge 62ca75a6b9 ab/perf-wildmatch later to maint). 109 110 * Code from "conversion using external process" codepath has been 111 extracted to a separate sub-process.[ch] module. 112 (merge 4f2a2e9f0e bp/sub-process-convert-filter later to maint). 113 114 * When "git checkout", "git merge", etc. manipulates the in-core 115 index, various pieces of information in the index extensions are 116 discarded from the original state, as it is usually not the case 117 that they are kept up-to-date and in-sync with the operation on the 118 main index. The untracked cache extension is copied across these 119 operations now, which would speed up "git status" (as long as the 120 cache is properly invalidated). 121 122 * The internal implementation of "git grep" has seen some clean-up. 123 (merge 8df4c2953f ab/grep-preparatory-cleanup later to maint). 124 125 * Update the C style recommendation for notes for translators, as 126 recent versions of gettext tools can work with our style of 127 multi-line comments. 128 129 * The implementation of "ref" API around the "packed refs" have been 130 cleaned up, in preparation for further changes. 131 132 * The internal logic used in "git blame" has been libified to make it 133 easier to use by cgit. 134 135 * Our code often opens a path to an optional file, to work on its 136 contents when we can successfully open it. We can ignore a failure 137 to open if such an optional file does not exist, but we do want to 138 report a failure in opening for other reasons (e.g. we got an I/O 139 error, or the file is there, but we lack the permission to open). 140 141 The exact errors we need to ignore are ENOENT (obviously) and 142 ENOTDIR (less obvious). Instead of repeating comparison of errno 143 with these two constants, introduce a helper function to do so. 144 145 * We often try to open a file for reading whose existence is 146 optional, and silently ignore errors from open/fopen; report such 147 errors if they are not due to missing files. 148 149 150Also contains various documentation updates and code clean-ups. 151 152 153Fixes since v2.13 154----------------- 155 156Unless otherwise noted, all the fixes since v2.13 in the maintenance 157track are contained in this release (see the maintenance releases' 158notes for details). 159 160 * "git gc" did not interact well with "git worktree"-managed 161 per-worktree refs. 162 163 * "git cherry-pick" and other uses of the sequencer machinery 164 mishandled a trailer block whose last line is an incomplete line. 165 This has been fixed so that an additional sign-off etc. are added 166 after completing the existing incomplete line. 167 168 * The codepath in "git am" that is used when running "git rebase" 169 leaked memory held for the log message of the commits being rebased. 170 171 * "git clone --config var=val" is a way to populate the 172 per-repository configuration file of the new repository, but it did 173 not work well when val is an empty string. This has been fixed. 174 175 * Setting "log.decorate=false" in the configuration file did not take 176 effect in v2.13, which has been corrected. 177 178 * A few codepaths in "checkout" and "am" working on an unborn branch 179 tried to access an uninitialized piece of memory. 180 181 * The Web interface to gmane news archive is long gone, even though 182 the articles are still accessible via NTTP. Replace the links with 183 ones to public-inbox.org. Because their message identification is 184 based on the actual message-id, it is likely that it will be easier 185 to migrate away from it if/when necessary. 186 187 * The receive-pack program now makes sure that the push certificate 188 records the same set of push options used for pushing. 189 190 * Tests have been updated to pass under GETTEXT_POISON (a mechanism 191 to ensure that output strings that should not be translated are 192 not translated by mistake), and TravisCI is told to run them. 193 194 * "git checkout --recurse-submodules" did not quite work with a 195 submodule that itself has submodules. 196 197 * Plug some leaks and updates internal API used to implement the 198 split index feature to make it easier to avoid such a leak in the 199 future. 200 (merge de950c5773 nd/split-index-unshare later to maint). 201 202 * "pack-objects" can stream a slice of an existing packfile out when 203 the pack bitmap can tell that the reachable objects are all needed 204 in the output, without inspecting individual objects. This 205 strategy however would not work well when "--local" and other 206 options are in use, and need to be disabled. 207 208 * Fix memory leaks pointed out by Coverity (and people). 209 210 * "git read-tree -m" (no tree-ish) gave a nonsense suggestion "use 211 --empty if you want to clear the index". With "-m", such a request 212 will still fail anyway, as you'd need to name at least one tree-ish 213 to be merged. 214 215 * Make sure our tests would pass when the sources are checked out 216 with "platform native" line ending convention by default on 217 Windows. Some "text" files out tests use and the test scripts 218 themselves that are meant to be run with /bin/sh, ought to be 219 checked out with eol=LF even on Windows. 220 221 * Introduce the BUG() macro to improve die("BUG: ..."). 222 223 * Clarify documentation for include.path and includeIf.<condition>.path 224 configuration variables. 225 226 * Git sometimes gives an advice in a rhetorical question that does 227 not require an answer, which can confuse new users and non native 228 speakers. Attempt to rephrase them. 229 230 * A few http:// links that are redirected to https:// in the 231 documentation have been updated to https:// links. 232 233 * "git for-each-ref --format=..." with %(HEAD) in the format used to 234 resolve the HEAD symref as many times as it had processed refs, 235 which was wasteful, and "git branch" shared the same problem. 236 237 * Regression fix to topic recently merged to 'master'. 238 239 * The shell completion script (in contrib/) learned "git stash" has 240 a new "push" subcommand. 241 242 * "git interpret-trailers", when used as GIT_EDITOR for "git commit 243 -v", looked for and appended to a trailer block at the very end, 244 i.e. at the end of the "diff" output. The command has been 245 corrected to pay attention to the cut-mark line "commit -v" adds to 246 the buffer---the real trailer block should appear just before it. 247 248 * A test allowed both "git push" and "git receive-pack" on the other 249 end write their traces into the same file. This is OK on platforms 250 that allows atomically appending to a file opened with O_APPEND, 251 but on other platforms led to a mangled output, causing 252 intermittent test failures. This has been fixed by disabling 253 traces from "receive-pack" in the test. 254 255 * Tag objects, which are not reachable from any ref, that point at 256 missing objects were mishandled by "git gc" and friends (they 257 should silently be ignored instead) 258 259 * "git describe --contains" penalized light-weight tags so much that 260 they were almost never considered. Instead, give them about the 261 same chance to be considered as an annotated tag that is the same 262 age as the underlying commit would. 263 (merge ef1e74065c jc/name-rev-lw-tag later to maint). 264 265 * The "run-command" API implementation has been made more robust 266 against dead-locking in a threaded environment. 267 268 * A recent update to t5545-push-options.sh started skipping all the 269 tests in the script when a web server testing is disabled or 270 unavailable, not just the ones that require a web server. Non HTTP 271 tests have been salvaged to always run in this script. 272 273 * "git send-email" now uses Net::SMTP::SSL, which is obsolete, only 274 when needed. Recent versions of Net::SMTP can do TLS natively. 275 276 * "foo\bar\baz" in "git fetch foo\bar\baz", even though there is no 277 slashes in it, cannot be a nickname for a remote on Windows, as 278 that is likely to be a pathname on a local filesystem. 279 280 * "git clean -d" used to clean directories that has ignored files, 281 even though the command should not lose ignored ones without "-x". 282 "git status --ignored" did not list ignored and untracked files 283 without "-uall". These have been corrected. 284 285 * The result from "git diff" that compares two blobs, e.g. "git diff 286 $commit1:$path $commit2:$path", used to be shown with the full 287 object name as given on the command line, but it is more natural to 288 use the $path in the output and use it to look up .gitattributes. 289 (merge 30d005c020 jk/diff-blob later to maint). 290 291 * The "collision detecting" SHA-1 implementation shipped with 2.13 292 was quite broken on some big-endian platforms and/or platforms that 293 do not like unaligned fetches. Update to the upstream code which 294 has already fixed these issues. 295 296 * "git am -h" triggered a BUG(). 297 298 * The interaction of "url.*.insteadOf" and custom URL scheme's 299 whitelisting is now documented better. 300 301 * The timestamp of the index file is now taken after the file is 302 closed, to help Windows, on which a stale timestamp is reported by 303 fstat() on a file that is opened for writing and data was written 304 but not yet closed. 305 306 * "git pull --rebase --autostash" didn't auto-stash when the local history 307 fast-forwards to the upstream. 308 309 * A flaky test has been corrected. 310 (merge 7c2115aa07 jk/pack-idx-corruption-safety later to maint). 311 312 * Other minor doc, test and build updates and code cleanups. 313 (merge 8ba74bfd7c jc/diff-tree-stale-comment later to maint).