1Git 2.10 Release Notes 2====================== 3 4Backward compatibility notes 5---------------------------- 6 7Updates since v2.9 8------------------ 9 10UI, Workflows & Features 11 12 * "git pull --rebase --verify-signature" learned to warn the user 13 that "--verify-signature" is a no-op when rebasing. 14 15 * An upstream project can make a recommendation to shallowly clone 16 some submodules in the .gitmodules file it ships. 17 18 * "git worktree add" learned that '-' can be used as a short-hand for 19 "@{-1}", the previous branch. 20 21 * Update the funcname definition to support css files. 22 23 * The completion script (in contrib/) learned to complete "git 24 status" options. 25 26 * Messages that are generated by auto gc during "git push" on the 27 receiving end are now passed back to the sending end in such a way 28 that they are shown with "remote: " prefix to avoid confusing the 29 users. 30 31 * "git add -i/-p" learned to honor diff.compactionHeuristic 32 experimental knob, so that the user can work on the same hunk split 33 as "git diff" output. 34 35 * "upload-pack" allows a custom "git pack-objects" replacement when 36 responding to "fetch/clone" via the uploadpack.packObjectsHook. 37 (merge 20b20a2 jk/upload-pack-hook later to maint). 38 39 * Teach format-patch and mailsplit (hence "am") how a line that 40 happens to begin with "From " in the e-mail message is quoted with 41 ">", so that these lines can be restored to their original shape. 42 (merge d9925d1 ew/mboxrd-format-am later to maint). 43 44 * "git repack" learned the "--keep-unreachable" option, which sends 45 loose unreachable objects to a pack instead of leaving them loose. 46 This helps heuristics based on the number of loose objects 47 (e.g. "gc --auto"). 48 (merge e26a8c4 jk/repack-keep-unreachable later to maint). 49 50 * "log --graph --format=" learned that "%>|(N)" specifies the width 51 relative to the terminal's left edge, not relative to the area to 52 draw text that is to the right of the ancestry-graph section. It 53 also now accepts negative N that means the column limit is relative 54 to the right border. 55 56 * A careless invocation of "git send-email directory/" after editing 57 0001-change.patch with an editor often ends up sending both 58 0001-change.patch and its backup file, 0001-change.patch~, causing 59 embarrassment and a minor confusion. Detect such an input and 60 offer to skip the backup files when sending the patches out. 61 (merge 531220b jc/send-email-skip-backup later to maint). 62 63 * "git submodule update" that drives many "git clone" could 64 eventually hit flaky servers/network conditions on one of the 65 submodules; the command learned to retry the attempt. 66 67 * The output coloring scheme learned two new attributes, italic and 68 strike, in addition to existing bold, reverse, etc. 69 70 * "git log" learns log.showSignature configuration variable, and a 71 command line option "--no-show-signature" to countermand it. 72 (merge fce04c3 mj/log-show-signature-conf later to maint). 73 74 * A couple of "git svn" updates. 75 76 * More markings of messages for i18n, with updates to various tests 77 to pass GETTEXT_POISON tests. 78 79 * "git archive" learned to handle files that are larger than 8GB and 80 commits far in the future than expressible by the traditional US-TAR 81 format. 82 (merge 5caeeb8 jk/big-and-future-archive-tar later to maint). 83 84 85Performance, Internal Implementation, Development Support etc. 86 87 * "git fast-import" learned the same performance trick to avoid 88 creating too small a packfile as "git fetch" and "git push" have, 89 using *.unpackLimit configuration. 90 91 * When "git daemon" is run without --[init-]timeout specified, a 92 connection from a client that silently goes offline can hang around 93 for a long time, wasting resources. The socket-level KEEPALIVE has 94 been enabled to allow the OS to notice such failed connections. 95 96 * "git upload-pack" command has been updated to use the parse-options 97 API. 98 99 * The "git apply" standalone program is being libified; this is the 100 first step to move many state variables into a structure that can 101 be explicitly (re)initialized to make the machinery callable more 102 than once. 103 104 * HTTP transport gained an option to produce more detailed debugging 105 trace. 106 (merge 73e57aa ep/http-curl-trace later to maint). 107 108 * Instead of taking advantage of a struct string_list that is 109 allocated with all NULs happens to be STRING_LIST_INIT_NODUP kind, 110 initialize them explicitly as such, to document their behaviour 111 better. 112 (merge 2721ce2 jk/string-list-static-init later to maint). 113 114 * HTTPd tests learned to show the server error log to help diagnosing 115 a failing tests. 116 (merge 44f243d nd/test-lib-httpd-show-error-log-in-verbose later to maint). 117 118 * The ownership rule for the piece of memory that hold references to 119 be fetched in "git fetch" was screwy, which has been cleaned up. 120 121 * "git bisect" makes an internal call to "git diff-tree" when 122 bisection finds the culprit, but this call did not initialize the 123 data structure to pass to the diff-tree API correctly. 124 125 * Further preparatory clean-up for "worktree" feature continues. 126 (merge 0409e0b nd/worktree-cleanup-post-head-protection later to maint). 127 128 * Formats of the various data (and how to validate them) where we use 129 GPG signature have been documented. 130 131 * A new run-command API function pipe_command() is introduced to 132 sanely feed data to the standard input while capturing data from 133 the standard output and the standard error of an external process, 134 which is cumbersome to hand-roll correctly without deadlocking. 135 136 The codepath to sign data in a prepared buffer with GPG has been 137 updated to use this API to read from the status-fd to check for 138 errors (instead of relying on GPG's exit status). 139 (merge efee955 jk/gpg-interface-cleanup later to maint). 140 141 * Allow t/perf framework to use the features from the most recent 142 version of Git even when testing an older installed version. 143 144 145Also contains various documentation updates and code clean-ups. 146 147 148Fixes since v2.9 149---------------- 150 151Unless otherwise noted, all the fixes since v2.8 in the maintenance 152track are contained in this release (see the maintenance releases' 153notes for details). 154 155 * The commands in `git log` family take %C(auto) in a custom format 156 string. This unconditionally turned the color on, ignoring 157 --no-color or with --color=auto when the output is not connected to 158 a tty; this was corrected to make the format truly behave as 159 "auto". 160 161 * "git rev-list --count" whose walk-length is limited with "-n" 162 option did not work well with the counting optimized to look at the 163 bitmap index. 164 165 * "git show -W" (extend hunks to cover the entire function, delimited 166 by lines that match the "funcname" pattern) used to show the entire 167 file when a change added an entire function at the end of the file, 168 which has been fixed. 169 170 * The documentation set has been updated so that literal commands, 171 configuration variables and environment variables are consistently 172 typeset in fixed-width font and bold in manpages. 173 174 * "git svn propset" subcommand that was added in 2.3 days is 175 documented now. 176 177 * The documentation tries to consistently spell "GPG"; when 178 referring to the specific program name, "gpg" is used. 179 180 * "git reflog" stopped upon seeing an entry that denotes a branch 181 creation event (aka "unborn"), which made it appear as if the 182 reflog was truncated. 183 184 * The git-prompt scriptlet (in contrib/) was not friendly with those 185 who uses "set -u", which has been fixed. 186 187 * compat/regex code did not cleanly compile. 188 189 * A codepath that used alloca(3) to place an unbounded amount of data 190 on the stack has been updated to avoid doing so. 191 192 * "git update-index --add --chmod=+x file" may be usable as an escape 193 hatch, but not a friendly thing to force for people who do need to 194 use it regularly. "git add --chmod=+x file" can be used instead. 195 196 * Build improvements for gnome-keyring (in contrib/) 197 198 * "git status" used to say "working directory" when it meant "working 199 tree". 200 201 * Comments about misbehaving FreeBSD shells have been clarified with 202 the version number (9.x and before are broken, newer ones are OK). 203 204 * "git cherry-pick A" worked on an unborn branch, but "git 205 cherry-pick A..B" didn't. 206 207 * Fix an unintended regression in v2.9 that breaks "clone --depth" 208 that recurses down to submodules by forcing the submodules to also 209 be cloned shallowly, which many server instances that host upstream 210 of the submodules are not prepared for. 211 212 * Fix unnecessarily waste in the idiomatic use of ': ${VAR=default}' 213 to set the default value, without enclosing it in double quotes. 214 215 * Some platform-specific code had non-ANSI strict declarations of C 216 functions that do not take any parameters, which has been 217 corrected. 218 219 * The internal code used to show local timezone offset is not 220 prepared to handle timestamps beyond year 2100, and gave a 221 bogus offset value to the caller. Use a more benign looking 222 +0000 instead and let "git log" going in such a case, instead 223 of aborting. 224 (merge bab7483 jk/tzoffset-fix later to maint). 225 226 * One among four invocations of readlink(1) in our test suite has 227 been rewritten so that the test can run on systems without the 228 command (others are in valgrind test framework and t9802). 229 230 * t/perf needs /usr/bin/time with GNU extension; the invocation of it 231 is updated to "gtime" on Darwin. 232 233 * A bug, which caused "git p4" while running under verbose mode to 234 report paths that are omitted due to branch prefix incorrectly, has 235 been fixed; the command said "Ignoring file outside of prefix" for 236 paths that are _inside_. 237 238 * The top level documentation "git help git" still pointed at the 239 documentation set hosted at now-defunct google-code repository. 240 Update it to point to https://git.github.io/htmldocs/git.html 241 instead. 242 243 * A helper function that takes the contents of a commit object and 244 finds its subject line did not ignore leading blank lines, as is 245 commonly done by other codepaths. Make it ignore leading blank 246 lines to match. 247 (merge 054a5ae js/find-commit-subject-ignore-leading-blanks later to maint). 248 249 * For a long time, we carried an in-code comment that said our 250 colored output would work only when we use fprintf/fputs on 251 Windows, which no longer is the case for the past few years. 252 (merge 3d0a833 js/color-on-windows-comment later to maint). 253 254 * "gc.autoPackLimit" when set to 1 should not trigger a repacking 255 when there is only one pack, but the code counted poorly and did 256 so. 257 (merge 5f4e3bf ew/gc-auto-pack-limit-fix later to maint). 258 259 * Add a test to specify the desired behaviour that currently is not 260 available in "git rebase -Xsubtree=...". 261 (merge 5f35900 dg/subtree-rebase-test later to maint). 262 263 * More mark-up updates to typeset strings that are expected to 264 literally typed by the end user in fixed-width font. 265 (merge 661c3e9 mm/doc-tt later to maint). 266 267 * "git commit --amend --allow-empty-message -S" for a commit without 268 any message body could have misidentified where the header of the 269 commit object ends. 270 (merge 3324dd8 js/sign-empty-commit-fix later to maint). 271 272 * "git rebase -i --autostash" did not restore the auto-stashed change 273 when the operation was aborted. 274 (merge 33ba9c6 ps/rebase-i-auto-unstash-upon-abort later to maint). 275 276 * Git does not know what the contents in the index should be for a 277 path added with "git add -N" yet, so "git grep --cached" should not 278 show hits (or show lack of hits, with -L) in such a path, but that 279 logic does not apply to "git grep", i.e. searching in the working 280 tree files. But we did so by mistake, which has been corrected. 281 (merge b8e47d1 nd/ita-cleanup later to maint). 282 283 * Other minor clean-ups and documentation updates 284 (merge e51b0df pb/commit-editmsg-path later to maint). 285 (merge b333d0d jk/send-pack-stdio later to maint). 286 (merge fcf0fe9 lf/sideband-returns-void later to maint). 287 (merge c2691e2 ah/unpack-trees-advice-messages later to maint). 288 (merge 82f6178 nd/doc-new-command later to maint). 289 (merge fa90ab4 js/t3404-grammo-fix later to maint).