1Git 2.16 Release Notes 2====================== 3 4Backward compatibility notes and other notable changes. 5 6 * Use of an empty string as a pathspec element that is used for 7 'everything matches' is now an error. 8 9 10Updates since v2.15 11------------------- 12 13UI, Workflows & Features 14 15 * An empty string as a pathspec element that means "everything" 16 i.e. 'git add ""', is now illegal. We started this by first 17 deprecating and warning a pathspec that has such an element in 18 2.11 (Nov 2016). 19 20 * A hook script that is set unexecutable is simply ignored. Git 21 notifies when such a file is ignored, unless the message is 22 squelched via advice.ignoredHook configuration. 23 24 * "git pull" has been taught to accept "--[no-]signoff" option and 25 pass it down to "git merge". 26 27 * The "--push-option=<string>" option to "git push" now defaults to a 28 list of strings configured via push.pushOption variable. 29 30 * "gitweb" checks if a directory is searchable with Perl's "-x" 31 operator, which can be enhanced by using "filetest 'access'" 32 pragma, which now we do. 33 34 * "git stash save" has been deprecated in favour of "git stash push". 35 36 * The set of paths output from "git status --ignored" was tied 37 closely with its "--untracked=<mode>" option, but now it can be 38 controlled more flexibly. Most notably, a directory that is 39 ignored because it is listed to be ignored in the ignore/exclude 40 mechanism can be handled differently from a directory that ends up 41 to be ignored only because all files in it are ignored. 42 43 * The remote-helper for talking to MediaWiki has been updated to 44 truncate an overlong pagename so that ".mw" suffix can still be 45 added. 46 47 * The remote-helper for talking to MediaWiki has been updated to 48 work with mediawiki namespaces. 49 50 * The "--format=..." option "git for-each-ref" takes learned to show 51 the name of the 'remote' repository and the ref at the remote side 52 that is affected for 'upstream' and 'push' via "%(push:remotename)" 53 and friends. 54 55 * Doc and message updates to teach users "bisect view" is a synonym 56 for "bisect visualize". 57 58 * "git bisect run" that did not specify any command to run used to go 59 ahead and treated all commits to be tested as 'good'. This has 60 been corrected by making the command error out. 61 62 * The SubmittingPatches document has been converted to produce an 63 HTML version via AsciiDoc/Asciidoctor. 64 (merge 049e64aa50 bc/submitting-patches-in-asciidoc later to maint). 65 66 * We learned to talk to watchman to speed up "git status" and other 67 operations that need to see which paths have been modified. 68 69 * The "diff" family of commands learned to ignore differences in 70 carriage return at the end of line. 71 72 * Places that know about "sendemail.to", like documentation and shell 73 completion (in contrib/) have been taught about "sendemail.tocmd", 74 too. 75 76 * "git add --renormalize ." is a new and safer way to record the fact 77 that you are correcting the end-of-line convention and other 78 "convert_to_git()" glitches in the in-repository data. 79 80 * "git branch" and "git checkout -b" are now forbidden from creating 81 a branch whose name is "HEAD". 82 83 * "git branch --list" learned to show its output through the pager by 84 default when the output is going to a terminal, which is controlled 85 by the pager.branch configuration variable. This is similar to a 86 recent change to "git tag --list". 87 88 * "git grep -W", "git diff -W" and their friends learned a heuristic 89 to extend a pre-context beyond the line that matches the "function 90 pattern" (aka "diff.*.xfuncname") to include a comment block, if 91 exists, that immediately precedes it. 92 93 94Performance, Internal Implementation, Development Support etc. 95 96 * An earlier update made it possible to use an on-stack in-core 97 lockfile structure (as opposed to having to deliberately leak an 98 on-heap one). Many codepaths have been updated to take advantage 99 of this new facility. 100 101 * Calling cmd_foo() as if it is a general purpose helper function is 102 a no-no. Correct two instances of such to set an example. 103 104 * We try to see if somebody runs our test suite with a shell that 105 does not support "local" like bash/dash does. 106 107 * An early part of piece-by-piece rewrite of "git bisect" in C. 108 109 * GSoC to piece-by-piece rewrite "git submodule" in C. 110 111 * Optimize the code to find shortest unique prefix of object names. 112 113 * Pathspec-limited revision traversal was taught not to keep finding 114 unneeded differences once it knows two trees are different inside 115 given pathspec. 116 117 * Conversion from uchar[20] to struct object_id continues. 118 119 * Code cleanup. 120 121 * A single-word "unsigned flags" in the diff options is being split 122 into a structure with many bitfields. 123 124 * TravisCI build updates. 125 126 * Parts of a test to drive the long-running content filter interface 127 has been split into its own module, hopefully to eventually become 128 reusable. 129 130 * Drop (perhaps overly cautious) sanity check before using the index 131 read from the filesystem at runtime. 132 133Also contains various documentation updates and code clean-ups. 134 135 136Fixes since v2.15 137----------------- 138 139 * "auto" as a value for the columnar output configuration ought to 140 judge "is the output consumed by humans?" with the same criteria as 141 "auto" for coloured output configuration, i.e. either the standard 142 output stream is going to tty, or a pager is in use. We forgot the 143 latter, which has been fixed. 144 145 * The experimental "color moved lines differently in diff output" 146 feature was buggy around "ignore whitespace changes" edges, which 147 has been corrected. 148 149 * Instead of using custom line comparison and hashing functions to 150 implement "moved lines" coloring in the diff output, use the pair 151 of these functions from lower-layer xdiff/ code. 152 153 * Some codepaths did not check for errors when asking what branch the 154 HEAD points at, which have been fixed. 155 156 * "git commit", after making a commit, did not check for errors when 157 asking on what branch it made the commit, which has been corrected. 158 159 * "git status --ignored -u" did not stop at a working tree of a 160 separate project that is embedded in an ignored directory and 161 listed files in that other project, instead of just showing the 162 directory itself as ignored. 163 164 * A broken access to object databases in recent update to "git grep 165 --recurse-submodules" has been fixed. 166 167 * A recent regression in "git rebase -i" that broke execution of git 168 commands from subdirectories via "exec" instruction has been fixed. 169 170 * A (possibly flakey) test fix. 171 172 * "git check-ref-format --branch @{-1}" bit a "BUG()" when run 173 outside a repository for obvious reasons; clarify the documentation 174 and make sure we do not even try to expand the at-mark magic in 175 such a case, but still call the validation logic for branch names. 176 177 * "git fetch --recurse-submodules" now knows that submodules can be 178 moved around in the superproject in addition to getting updated, 179 and finds the ones that need to be fetched accordingly. 180 181 * Command line completion (in contrib/) update. 182 183 * Description of blame.{showroot,blankboundary,showemail,date} 184 configuration variables have been added to "git config --help". 185 186 * After an error from lstat(), diff_populate_filespec() function 187 sometimes still went ahead and used invalid data in struct stat, 188 which has been fixed. 189 190 * UNC paths are also relevant in Cygwin builds and they are now 191 tested just like Mingw builds. 192 193 * Correct start-up sequence so that a repository could be placed 194 immediately under the root directory again (which was broken at 195 around Git 2.13). 196 197 * The credential helper for libsecret (in contrib/) has been improved 198 to allow possibly prompting the end user to unlock secrets that are 199 currently locked (otherwise the secrets may not be loaded). 200 201 * MinGW updates. 202 203 * Error checking in "git imap-send" for empty response has been 204 improved. 205 206 * Recent update to the refs infrastructure implementation started 207 rewriting packed-refs file more often than before; this has been 208 optimized again for most trivial cases. 209 (merge 7c6bd25c7d mh/avoid-rewriting-packed-refs later to maint). 210 211 * Some error messages did not quote filenames shown in it, which have 212 been fixed. 213 214 * "git rebase -i" recently started misbehaving when a submodule that 215 is configured with 'submodule.<name>.ignore' is dirty; this has 216 been corrected. 217 218 * Building with NO_LIBPCRE1_JIT did not disable it, which has been fixed. 219 220 * We used to add an empty alternate object database to the system 221 that does not help anything; it has been corrected. 222 223 * Doc update around use of "format-patch --subject-prefix" etc. 224 225 * A fix for an ancient bug in "git apply --ignore-space-change" codepath. 226 227 * Clarify and enhance documentation for "merge-base --fork-point", as 228 it was clear what it computed but not why/what for. 229 (merge 6d1700b8af jc/merge-base-fork-point-doc later to maint). 230 231 * A few scripts (both in production and tests) incorrectly redirected 232 their error output. These have been corrected. 233 (merge eadf1c8f45 tz/redirect-fix later to maint). 234 235 * "git notes" sent its error message to its standard output stream, 236 which was corrected. 237 (merge 89b9e31dd5 tz/notes-error-to-stderr later to maint). 238 239 * The three-way merge performed by "git cherry-pick" was confused 240 when a new submodule was added in the meantime, which has been 241 fixed (or "papered over"). 242 (merge c641ca6707 sb/test-cherry-pick-submodule-getting-in-a-way later to maint). 243 244 * The sequencer machinery (used by "git cherry-pick A..B", and "git 245 rebase -i", among other things) would have lost a commit if stopped 246 due to an unlockable index file, which has been fixed. 247 (merge bd58886775 pw/sequencer-recover-from-unlockable-index later to maint). 248 249 * "git apply --inaccurate-eof" when used with "--ignore-space-change" 250 triggered an internal sanity check, which has been fixed. 251 (merge 4855de1233 rs/apply-inaccurate-eof-with-incomplete-line later to maint). 252 253 * Command line completion (in contrib/) has been taught about the 254 "--copy" option of "git branch". 255 (merge 41ca0f773e tz/complete-branch-copy later to maint). 256 257 * When "git rebase" prepared an mailbox of changes and fed it to "git 258 am" to replay them, it was confused when a stray "From " happened 259 to be in the log message of one of the replayed changes. This has 260 been corrected. 261 (merge ae3b2b04bb ew/rebase-mboxrd later to maint). 262 263 * There was a recent semantic mismerge in the codepath to write out a 264 section of a configuration section, which has been corrected. 265 266 * Mentions of "git-rebase" and "git-am" (dashed form) still remained 267 in end-user visible strings emitted by the "git rebase" command; 268 they have been corrected. 269 (merge 82cb775c06 ks/rebase-no-git-foo later to maint). 270 271 * Contrary to the documentation, "git pull -4/-6 other-args" did not 272 ask the underlying "git fetch" to go over IPv4/IPv6, which has been 273 corrected. 274 (merge ffb4568afe sw/pull-ipv46-passthru later to maint). 275 276 * Other minor doc, test and build updates and code cleanups. 277 (merge c5e3bc6ec4 sd/branch-copy later to maint).