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1 Git 2.12 Release Notes
2 ======================
4 Backward compatibility notes.
6 * Use of an empty string that is used for 'everything matches' is
7 still warned and Git asks users to use a more explicit '.' for that
8 instead. The hope is that existing users will not mind this
9 change, and eventually the warning can be turned into a hard error,
10 upgrading the deprecation into removal of this (mis)feature. That
11 is not scheduled to happen in the upcoming release (yet).
13 * The historical argument order "git merge <msg> HEAD <commit>..."
14 has been deprecated for quite some time, and will be removed in the
15 upcoming release.
18 Updates since v2.11
19 -------------------
21 UI, Workflows & Features
23 * Various updates to "git p4".
25 * "git p4" didn't interact with the internal of .git directory
26 correctly in the modern "git-worktree"-enabled world.
28 * "git branch --list" and friends learned "--ignore-case" option to
29 optionally sort branches and tags case insensitively.
31 * In addition to %(subject), %(body), "log --pretty=format:..."
32 learned a new placeholder %(trailers).
34 * "git rebase" learned "--quit" option, which allows a user to
35 remove the metadata left by an earlier "git rebase" that was
36 manually aborted without using "git rebase --abort".
38 * "git clone --reference $there --recurse-submodules $super" has been
39 taught to guess repositories usable as references for submodules of
40 $super that are embedded in $there while making a clone of the
41 superproject borrow objects from $there; extend the mechanism to
42 also allow submodules of these submodules to borrow repositories
43 embedded in these clones of the submodules embedded in the clone of
44 the superproject.
46 * Porcelain scripts written in Perl are getting internationalized.
48 * "git merge --continue" has been added as a synonym to "git commit"
49 to conclude a merge that has stopped due to conflicts.
51 * Finer-grained control of what protocols are allowed for transports
52 during clone/fetch/push have been enabled via a new configuration
53 mechanism.
55 * "git shortlog" learned "--committer" option to group commits by
56 committer, instead of author.
58 * GitLFS integration with "git p4" has been updated.
60 * The isatty() emulation for Windows has been updated to eradicate
61 the previous hack that depended on internals of (older) MSVC
62 runtime.
64 * Some platforms no longer understand "latin-1" that is still seen in
65 the wild in e-mail headers; replace them with "iso-8859-1" that is
66 more widely known when conversion fails from/to it.
67 (merge df3755888b jc/latin-1 later to maint).
69 * "git grep" has been taught to optionally recurse into submodules.
71 * "git rm" used to refuse to remove a submodule when it has its own
72 git repository embedded in its working tree. It learned to move
73 the repository away to $GIT_DIR/modules/ of the superproject
74 instead, and allow the submodule to be deleted (as long as there
75 will be no loss of local modifications, that is).
77 * A recent updates to "git p4" was not usable for older p4 but it
78 could be made to work with minimum changes. Do so.
80 * "git diff" learned diff.interHunkContext configuration variable
81 that gives the default value for its --inter-hunk-context option.
83 * The prereleaseSuffix feature of version comparison that is used in
84 "git tag -l" did not correctly when two or more prereleases for the
85 same release were present (e.g. when 2.0, 2.0-beta1, and 2.0-beta2
86 are there and the code needs to compare 2.0-beta1 and 2.0-beta2).
89 Performance, Internal Implementation, Development Support etc.
91 * Commands that operate on a log message and add lines to the trailer
92 blocks, such as "format-patch -s", "cherry-pick (-x|-s)", and
93 "commit -s", have been taught to use the logic of and share the
94 code with "git interpret-trailer".
96 * The default Travis-CI configuration specifies newer P4 and GitLFS.
98 * The "fast hash" that had disastrous performance issues in some
99 corner cases has been retired from the internal diff.
101 * The character width table has been updated to match Unicode 9.0
103 * Update the procedure to generate "tags" for developer support.
104 (merge 046e4c1c09 jk/make-tags-find-sources-tweak later to maint).
106 * The codeflow of setting NOATIME and CLOEXEC on file descriptors Git
107 opens has been simplified.
108 (merge b4d065df03 jc/git-open-cloexec later to maint).
110 * "git diff" and its family had two experimental heuristics to shift
111 the contents of a hunk to make the patch easier to read. One of
112 them turns out to be better than the other, so leave only the
113 "--indent-heuristic" option and remove the other one.
114 (merge 3cde4e02ee jc/retire-compaction-heuristics later to maint).
116 * A new submodule helper "git submodule embedgitdirs" to make it
117 easier to move embedded .git/ directory for submodules in a
118 superproject to .git/modules/ (and point the latter with the former
119 that is turned into a "gitdir:" file) has been added.
121 * "git push \\server\share\dir" has recently regressed and then
122 fixed. A test has retroactively been added for this breakage.
124 * Build updates for Cygwin.
126 * The implementation of "real_path()" was to go there with chdir(2)
127 and call getcwd(3), but this obviously wouldn't be usable in a
128 threaded environment. Rewrite it to manually resolve relative
129 paths including symbolic links in path components.
131 * Adjust documentation to help AsciiDoctor render better while not
132 breaking the rendering done by AsciiDoc.
135 Also contains various documentation updates and code clean-ups.
137 Fixes since v2.10
138 -----------------
140 Unless otherwise noted, all the fixes since v2.9 in the maintenance
141 track are contained in this release (see the maintenance releases'
142 notes for details).
144 * We often decide if a session is interactive by checking if the
145 standard I/O streams are connected to a TTY, but isatty() that
146 comes with Windows incorrectly returned true if it is used on NUL
147 (i.e. an equivalent to /dev/null). This has been fixed.
149 * "git svn" did not work well with path components that are "0", and
150 some configuration variable it uses were not documented.
151 (merge ea9a93dcc2 ew/svn-fixes later to maint).
153 * "git rev-parse --symbolic" failed with a more recent notation like
154 "HEAD^-1" and "HEAD^!".
156 * An empty directory in a working tree that can simply be nuked used
157 to interfere while merging or cherry-picking a change to create a
158 submodule directory there, which has been fixed..
160 * The code in "git push" to compute if any commit being pushed in the
161 superproject binds a commit in a submodule that hasn't been pushed
162 out was overly inefficient, making it unusable even for a small
163 project that does not have any submodule but have a reasonable
164 number of refs.
166 * "git push --dry-run --recurse-submodule=on-demand" wasn't
167 "--dry-run" in the submodules.
169 * The output from "git worktree list" was made in readdir() order,
170 and was unstable.
172 * mergetool.<tool>.trustExitCode configuration variable did not apply
173 to built-in tools, but now it does.
175 * "git p4" LFS support was broken when LFS stores an empty blob.
177 * A corner case in merge-recursive regression that crept in
178 during 2.10 development cycle has been fixed.
180 * Transport with dumb http can be fooled into following foreign URLs
181 that the end user does not intend to, especially with the server
182 side redirects and http-alternates mechanism, which can lead to
183 security issues. Tighten the redirection and make it more obvious
184 to the end user when it happens.
186 * Update the error messages from the dumb-http client when it fails
187 to obtain loose objects; we used to give sensible error message
188 only upon 404 but we now forbid unexpected redirects that needs to
189 be reported with something sensible.
191 * When diff.renames configuration is on (and with Git 2.9 and later,
192 it is enabled by default, which made it worse), "git stash"
193 misbehaved if a file is removed and another file with a very
194 similar content is added.
196 * "git diff --no-index" did not take "--no-abbrev" option.
198 * "git difftool --dir-diff" had a minor regression when started from
199 a subdirectory, which has been fixed.
201 * "git commit --allow-empty --only" (no pathspec) with dirty index
202 ought to be an acceptable way to create a new commit that does not
203 change any paths, but it was forbidden, perhaps because nobody
204 needed it so far.
206 * Git 2.11 had a minor regression in "merge --ff-only" that competed
207 with another process that simultanously attempted to update the
208 index. We used to explain what went wrong with an error message,
209 but the new code silently failed. The error message has been
210 resurrected.
212 * A pathname that begins with "//" or "\\" on Windows is special but
213 path normalization logic was unaware of it.
215 * "git pull --rebase", when there is no new commits on our side since
216 we forked from the upstream, should be able to fast-forward without
217 invoking "git rebase", but it didn't.
219 * The way to specify hotkeys to "xxdiff" that is used by "git
220 mergetool" has been modernized to match recent versions of xxdiff.
222 * Unlike "git am --abort", "git cherry-pick --abort" moved HEAD back
223 to where cherry-pick started while picking multiple changes, when
224 the cherry-pick stopped to ask for help from the user, and the user
225 did "git reset --hard" to a different commit in order to re-attempt
226 the operation.
228 * Code cleanup in shallow boundary computation.
230 * A recent update to receive-pack to make it easier to drop garbage
231 objects made it clear that GIT_ALTERNATE_OBJECT_DIRECTORIES cannot
232 have a pathname with a colon in it (no surprise!), and this in turn
233 made it impossible to push into a repository at such a path. This
234 has been fixed by introducing a quoting mechanism used when
235 appending such a path to the colon-separated list.
237 * The function usage_msg_opt() has been updated to say "fatal:"
238 before the custom message programs give, when they want to die
239 with a message about wrong command line options followed by the
240 standard usage string.
242 * "git index-pack --stdin" needs an access to an existing repository,
243 but "git index-pack file.pack" to generate an .idx file that
244 corresponds to a packfile does not.
246 * Fix for NDEBUG builds.
248 * A lazy "git push" without refspec did not internally use a fully
249 specified refspec to perform 'current', 'simple', or 'upstream'
250 push, causing unnecessary "ambiguous ref" errors.
252 * "git p4" misbehaved when swapping a directory and a symbolic link.
254 * Even though an fix was attempted in Git 2.9.3 days, but running
255 "git difftool --dir-diff" from a subdirectory never worked. This
256 has been fixed.
258 * "git p4" that tracks multile p4 paths imported a single changelist
259 that touches files in these multiple paths as one commit, followed
260 by many empty commits. This has been fixed.
262 * A potential but unlikely buffer overflow in Windows port has been
263 fixed.
265 * When the http server gives an incomplete response to a smart-http
266 rpc call, it could lead to client waiting for a full response that
267 will never come. Teach the client side to notice this condition
268 and abort the transfer.
270 * Compression setting for producing packfiles were spread across
271 three codepaths, one of which did not honor any configuration.
272 Unify these so that all of them honor core.compression and
273 pack.compression variables the same way.
274 (merge 8de7eeb54b jc/compression-config later to maint).
276 * "git fast-import" sometimes mishandled while rebalancing notes
277 tree, which has been fixed.
278 (merge 405d7f4af6 mh/fast-import-notes-fix-new later to maint).
280 * Recent update to the default abbreviation length that auto-scales
281 lacked documentation update, which has been corrected.
282 (merge 48d5014dd4 jc/abbrev-autoscale-config later to maint).
284 * Leakage of lockfiles in the config subsystem has been fixed.
285 (merge c06fa62dfc nd/config-misc-fixes later to maint).
287 * It is natural that "git gc --auto" may not attempt to pack
288 everything into a single pack, and there is no point in warning
289 when the user has configured the system to use the pack bitmap,
290 leading to disabling further "gc".
291 (merge 1c409a705c dt/disable-bitmap-in-auto-gc later to maint).
293 * "git archive" did not read the standard configuration files, and
294 failed to notice a file that is marked as binary via the userdiff
295 driver configuration.
296 (merge 965cba2e7e jk/archive-zip-userdiff-config later to maint).
298 * "git blame --porcelain" misidentified the "previous" <commit, path>
299 pair (aka "source") when contents came from two or more files.
300 (merge 4e76832984 jk/blame-fixes later to maint).
302 * "git rebase -i" with a recent update started showing an incorrect
303 count when squashing more than 10 commits.
304 (merge 356b8ecff1 jk/rebase-i-squash-count-fix later to maint).
306 * "git <cmd> @{push}" on a detached HEAD used to segfault; it has
307 been corrected to error out with a message.
308 (merge b10731f43d km/branch-get-push-while-detached later to maint).
310 * Running "git add a/b" when "a" is a submodule correctly errored
311 out, but without a meaningful error message.
312 (merge 2d81c48fa7 sb/pathspec-errors later to maint).
314 * Typing ^C to pager, which usually does not kill it, killed Git and
315 took the pager down as a collateral damage in certain process-tree
316 structure. This has been fixed.
317 (merge 46df6906f3 jk/execv-dashed-external later to maint).
319 * "git mergetool" without any pathspec on the command line that is
320 run from a subdirectory became no-op in Git v2.11 by mistake, which
321 has been fixed.
323 * Retire long unused/unmaintained gitview from the contrib/ area.
324 (merge 3120925c25 sb/remove-gitview later to maint).
326 * Tighten a test to avoid mistaking an extended ERE regexp engine as
327 a PRE regexp engine.
328 (merge 7675c7bd01 jk/grep-e-could-be-extended-beyond-posix later to maint).
330 * Other minor doc, test and build updates and code cleanups.
331 (merge f2627d9b19 sb/submodule-config-cleanup later to maint).
332 (merge 384f1a167b sb/unpack-trees-cleanup later to maint).
333 (merge 3f05402ac0 ad/bisect-terms later to maint).
334 (merge 874444b704 rh/diff-orderfile-doc later to maint).
335 (merge c68d2d7c2b ws/request-pull-code-cleanup later to maint).