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1 Git 2.10 Release Notes
2 ======================
4 Backward compatibility notes
5 ----------------------------
7 Updates since v2.9
8 ------------------
10 UI, Workflows & Features
12 * "git pull --rebase --verify-signature" learned to warn the user
13 that "--verify-signature" is a no-op when rebasing.
15 * An upstream project can make a recommendation to shallowly clone
16 some submodules in the .gitmodules file it ships.
18 * "git worktree add" learned that '-' can be used as a short-hand for
19 "@{-1}", the previous branch.
21 * Update the funcname definition to support css files.
23 * The completion script (in contrib/) learned to complete "git
24 status" options.
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.
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.
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).
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).
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).
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.
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).
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.
67 * The output coloring scheme learned two new attributes, italic and
68 strike, in addition to existing bold, reverse, etc.
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).
74 * A couple of "git svn" updates.
76 * More markings of messages for i18n, with updates to various tests
77 to pass GETTEXT_POISON tests.
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).
85 Performance, Internal Implementation, Development Support etc.
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.
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.
96 * "git upload-pack" command has been updated to use the parse-options
97 API.
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.
104 * HTTP transport gained an option to produce more detailed debugging
105 trace.
106 (merge 73e57aa ep/http-curl-trace later to maint).
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).
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).
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.
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.
125 * Further preparatory clean-up for "worktree" feature continues.
126 (merge 0409e0b nd/worktree-cleanup-post-head-protection later to maint).
128 * Formats of the various data (and how to validate them) where we use
129 GPG signature have been documented.
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.
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).
141 * Allow t/perf framework to use the features from the most recent
142 version of Git even when testing an older installed version.
145 Also contains various documentation updates and code clean-ups.
148 Fixes since v2.9
149 ----------------
151 Unless otherwise noted, all the fixes since v2.8 in the maintenance
152 track are contained in this release (see the maintenance releases'
153 notes for details).
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".
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.
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.
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.
174 * "git svn propset" subcommand that was added in 2.3 days is
175 documented now.
177 * The documentation tries to consistently spell "GPG"; when
178 referring to the specific program name, "gpg" is used.
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.
184 * The git-prompt scriptlet (in contrib/) was not friendly with those
185 who uses "set -u", which has been fixed.
187 * compat/regex code did not cleanly compile.
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.
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.
196 * Build improvements for gnome-keyring (in contrib/)
198 * "git status" used to say "working directory" when it meant "working
199 tree".
201 * Comments about misbehaving FreeBSD shells have been clarified with
202 the version number (9.x and before are broken, newer ones are OK).
204 * "git cherry-pick A" worked on an unborn branch, but "git
205 cherry-pick A..B" didn't.
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.
212 * Fix unnecessarily waste in the idiomatic use of ': ${VAR=default}'
213 to set the default value, without enclosing it in double quotes.
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.
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).
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).
230 * t/perf needs /usr/bin/time with GNU extension; the invocation of it
231 is updated to "gtime" on Darwin.
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_.
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.
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).
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).
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).
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).
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).
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).
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).
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).
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).