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 70Performance, Internal Implementation, Development Support etc. 71 72 * An earlier update made it possible to use an on-stack in-core 73 lockfile structure (as opposed to having to deliberately leak an 74 on-heap one). Many codepaths have been updated to take advantage 75 of this new facility. 76 77 * Calling cmd_foo() as if it is a general purpose helper function is 78 a no-no. Correct two instances of such to set an example. 79 80 * We try to see if somebody runs our test suite with a shell that 81 does not support "local" like bash/dash does. 82 83 * An early part of piece-by-piece rewrite of "git bisect" in C. 84 85 * GSoC to piece-by-piece rewrite "git submodule" in C. 86 87 * Optimize the code to find shortest unique prefix of object names. 88 89 * Pathspec-limited revision traversal was taught not to keep finding 90 unneeded differences once it knows two trees are different inside 91 given pathspec. 92 93 * Conversion from uchar[20] to struct object_id continues. 94 95 * Code cleanup. 96 97 * A single-word "unsigned flags" in the diff options is being split 98 into a structure with many bitfields. 99 100 * TravisCI build updates. 101 102 * Parts of a test to drive the long-running content filter interface 103 has been split into its own module, hopefully to eventually become 104 reusable. 105 106 * Drop (perhaps overly cautious) sanity check before using the index 107 read from the filesystem at runtime. 108 109Also contains various documentation updates and code clean-ups. 110 111 112Fixes since v2.15 113----------------- 114 115 * "auto" as a value for the columnar output configuration ought to 116 judge "is the output consumed by humans?" with the same criteria as 117 "auto" for coloured output configuration, i.e. either the standard 118 output stream is going to tty, or a pager is in use. We forgot the 119 latter, which has been fixed. 120 121 * The experimental "color moved lines differently in diff output" 122 feature was buggy around "ignore whitespace changes" edges, whihch 123 has been corrected. 124 125 * Instead of using custom line comparison and hashing functions to 126 implement "moved lines" coloring in the diff output, use the pair 127 of these functions from lower-layer xdiff/ code. 128 129 * Some codepaths did not check for errors when asking what branch the 130 HEAD points at, which have been fixed. 131 132 * "git commit", after making a commit, did not check for errors when 133 asking on what branch it made the commit, which has been correted. 134 135 * "git status --ignored -u" did not stop at a working tree of a 136 separate project that is embedded in an ignored directory and 137 listed files in that other project, instead of just showing the 138 directory itself as ignored. 139 140 * A broken access to object databases in recent update to "git grep 141 --recurse-submodules" has been fixed. 142 143 * A recent regression in "git rebase -i" that broke execution of git 144 commands from subdirectories via "exec" insn has been fixed. 145 146 * A (possibly flakey) test fix. 147 148 * "git check-ref-format --branch @{-1}" bit a "BUG()" when run 149 outside a repository for obvious reasons; clarify the documentation 150 and make sure we do not even try to expand the at-mark magic in 151 such a case, but still call the validation logic for branch names. 152 153 * "git fetch --recurse-submodules" now knows that submodules can be 154 moved around in the superproject in addition to getting updated, 155 and finds the ones that need to be fetched accordingly. 156 157 * Command line completion (in contrib/) update. 158 159 * Description of blame.{showroot,blankboundary,showemail,date} 160 configuration variables have been added to "git config --help". 161 162 * After an error from lstat(), diff_populate_filespec() function 163 sometimes still went ahead and used invalid data in struct stat, 164 which has been fixed. 165 166 * UNC paths are also relevant in Cygwin builds and they are now 167 tested just like Mingw builds. 168 169 * Correct start-up sequence so that a repository could be placed 170 immediately under the root directory again (which was broken at 171 around Git 2.13). 172 173 * The credential helper for libsecret (in contrib/) has been improved 174 to allow possibly prompting the end user to unlock secrets that are 175 currently locked (otherwise the secrets may not be loaded). 176 177 * MinGW updates. 178 179 * Error checking in "git imap-send" for empty response has been 180 improved. 181 (merge 618ec81abb rs/imap-send-next-arg-fix later to maint). 182 183 * Recent update to the refs infrastructure implementation started 184 rewriting packed-refs file more often than before; this has been 185 optimized again for most trivial cases. 186 (merge 7c6bd25c7d mh/avoid-rewriting-packed-refs later to maint). 187 188 * Some error messages did not quote filenames shown in it, which have 189 been fixed. 190 191 * "git rebase -i" recently started misbehaving when a submodule that 192 is configured with 'submodule.<name>.ignore' is dirty; this has 193 been corrected. 194 195 * Building with NO_LIBPCRE1_JIT did not disable it, which has been fixed. 196 197 * We used to add an empty alternate object database to the system 198 that does not help anything; it has been corrected. 199 200 * Doc update around use of "format-patch --subject-prefix" etc. 201 (merge f6be7edcac ad/submitting-patches-title-decoration later to maint). 202 203 * A fix for an ancient bug in "git apply --ignore-space-change" codepath. 204 (merge 6ce15ce576 rs/apply-fuzzy-match-fix later to maint). 205 206 * Other minor doc, test and build updates and code cleanups. 207 (merge f4e45cb3eb ma/bisect-leakfix later to maint). 208 (merge 4da72644b7 ma/reduce-heads-leakfix later to maint).