| blob | 8b29f7712debb7b4599f55a2264602c4e506de41 |
1 Git 2.11 Release Notes
2 ======================
4 Updates since v2.10
5 -------------------
7 UI, Workflows & Features
9 * "git format-patch --cover-letter HEAD^" to format a single patch
10 with a separate cover letter now numbers the output as [PATCH 0/1]
11 and [PATCH 1/1] by default.
13 * An incoming "git push" that attempts to push too many bytes can now
14 be rejected by setting a new configuration variable at the receiving
15 end.
17 * "git nosuchcommand --help" said "No manual entry for gitnosuchcommand",
18 which was not intuitive, given that "git nosuchcommand" said "git:
19 'nosuchcommand' is not a git command".
21 * "git clone --resurse-submodules --reference $path $URL" is a way to
22 reduce network transfer cost by borrowing objects in an existing
23 $path repository when cloning the superproject from $URL; it
24 learned to also peek into $path for presense of corresponding
25 repositories of submodules and borrow objects from there when able.
27 * The "git diff --submodule={short,log}" mechanism has been enhanced
28 to allow "--submodule=diff" to show the patch between the submodule
29 commits bound to the superproject.
31 * Even though "git hash-objects", which is a tool to take an
32 on-filesystem data stream and put it into the Git object store,
33 allowed to perform the "outside-world-to-Git" conversions (e.g.
34 end-of-line conversions and application of the clean-filter), and
35 it had the feature on by default from very early days, its reverse
36 operation "git cat-file", which takes an object from the Git object
37 store and externalize for the consumption by the outside world,
38 lacked an equivalent mechanism to run the "Git-to-outside-world"
39 conversion. The command learned the "--filters" option to do so.
42 Performance, Internal Implementation, Development Support etc.
44 * The delta-base-cache mechanism has been a key to the performance in
45 a repository with a tightly packed packfile, but it did not scale
46 well even with a larger value of core.deltaBaseCacheLimit.
48 * Enhance "git status --porcelain" output by collecting more data on
49 the state of the index and the working tree files, which may
50 further be used to teach git-prompt (in contrib/) to make fewer
51 calls to git.
53 * Extract a small helper out of the function that reads the authors
54 script file "git am" internally uses.
55 (merge a77598e jc/am-read-author-file later to maint).
57 * Lifts calls to exit(2) and die() higher in the callchain in
58 sequencer.c files so that more helper functions in it can be used
59 by callers that want to handle error conditions themselves.
61 * "git am" has been taught to make an internal call to "git apply"'s
62 innards without spawning the latter as a separate process.
64 * The ref-store abstraction was introduced to the refs API so that we
65 can plug in different backends to store references.
67 * The "unsigned char sha1[20]" to "struct object_id" conversion
68 continues. Notable changes in this round includes that ce->sha1,
69 i.e. the object name recorded in the cache_entry, turns into an
70 object_id.
72 * JGit can show a fake ref "capabilities^{}" to "git fetch" when it
73 does not advertise any refs, but "git fetch" was not prepared to
74 see such an advertisement. When the other side disconnects without
75 giving any ref advertisement, we used to say "there may not be a
76 repository at that URL", but we may have seen other advertisement
77 like "shallow" and ".have" in which case we definitely know that a
78 repository is there. The code to detect this case has also been
79 updated.
81 * Some codepaths in "git pack-objects" were not ready to use an
82 existing pack bitmap; now they are and as the result they have
83 become faster.
86 Also contains various documentation updates and code clean-ups.
89 Fixes since v2.10
90 -----------------
92 Unless otherwise noted, all the fixes since v2.9 in the maintenance
93 track are contained in this release (see the maintenance releases'
94 notes for details).
96 * Clarify various ways to specify the "revision ranges" in the
97 documentation.
99 * "diff-highlight" script (in contrib/) learned to work better with
100 "git log -p --graph" output.
102 * The test framework left the number of tests and success/failure
103 count in the t/test-results directory, keyed by the name of the
104 test script plus the process ID. The latter however turned out not
105 to serve any useful purpose. The process ID part of the filename
106 has been removed.
108 * Having a submodule whose ".git" repository is somehow corrupt
109 caused a few commands that recurse into submodules loop forever.
111 * "git symbolic-ref -d HEAD" happily removes the symbolic ref, but
112 the resulting repository becomes an invalid one. Teach the command
113 to forbid removal of HEAD.
115 * A test spawned a short-lived background process, which sometimes
116 prevented the test directory from getting removed at the end of the
117 script on some platforms.
119 * Update a few tests that used to use GIT_CURL_VERBOSE to use the
120 newer GIT_TRACE_CURL.
122 * "git pack-objects --include-tag" was taught that when we know that
123 we are sending an object C, we want a tag B that directly points at
124 C but also a tag A that points at the tag B. We used to miss the
125 intermediate tag B in some cases.
126 (merge b773dde jk/pack-tag-of-tag later to maint).
128 * Update Japanese translation for "git-gui".
129 (merge 02748bc sy/git-gui-i18n-ja later to maint).
131 * "git fetch http::/site/path" did not die correctly and segfaulted
132 instead.
133 (merge d63ed6e jk/fix-remote-curl-url-wo-proto later to maint).
135 * "git commit-tree" stopped reading commit.gpgsign configuration
136 variable that was meant for Porcelain "git commit" in Git 2.9; we
137 forgot to update "git gui" to look at the configuration to match
138 this change.
139 (merge f14a310 js/git-gui-commit-gpgsign later to maint).
141 * "git add --chmod=+x" added recently lacked documentation, which has
142 been corrected.
143 (merge 7ef7903 et/add-chmod-x later to maint).
145 * "git log --cherry-pick" used to include merge commits as candidates
146 to be matched up with other commits, resulting a lot of wasted time.
147 The patch-id generation logic has been updated to ignore merges to
148 avoid the wastage.
149 (merge 7c81040 jk/patch-ids-no-merges later to maint).
151 * The http transport (with curl-multi option, which is the default
152 these days) failed to remove curl-easy handle from a curlm session,
153 which led to unnecessary API failures.
154 (merge 2abc848 ew/http-do-not-forget-to-call-curl-multi-remove-handle later to maint).
156 * There were numerous corner cases in which the configuration files
157 are read and used or not read at all depending on the directory a
158 Git command was run, leading to inconsistent behaviour. The code
159 to set-up repository access at the beginning of a Git process has
160 been updated to fix them.
161 (merge 4d0efa1 jk/setup-sequence-update later to maint).
163 * "git diff -W" output needs to extend the context backward to
164 include the header line of the current function and also forward to
165 include the body of the entire current function up to the header
166 line of the next one. This process may have to merge to adjacent
167 hunks, but the code forgot to do so in some cases.
168 (merge 45d2f75 rs/xdiff-merge-overlapping-hunks-for-W-context later to maint).
170 * Performance tests done via "t/perf" did not use the same set of
171 build configuration if the user relied on autoconf generated
172 configuration.
173 (merge cd5c281 ks/perf-build-with-autoconf later to maint).
175 * "git format-patch --base=..." feature that was recently added
176 showed the base commit information after "-- " e-mail signature
177 line, which turned out to be inconvenient. The base information
178 has been moved above the signature line.
179 (merge 480871e jt/format-patch-base-info-above-sig later to maint).
181 * More i18n.
182 (merge 43073f8 va/i18n later to maint).
184 * Even when "git pull --rebase=preserve" (and the underlying "git
185 rebase --preserve") can complete without creating any new commit
186 (i.e. fast-forwards), it still insisted on having a usable ident
187 information (read: user.email is set correctly), which was less
188 than nice. As the underlying commands used inside "git rebase"
189 would fail with a more meaningful error message and advice text
190 when the bogus ident matters, this extra check was removed.
191 (merge 1e461c4 jk/rebase-i-drop-ident-check later to maint).
193 * "git gc --aggressive" used to limit the delta-chain length to 250,
194 which is way too deep for gaining additional space savings and is
195 detrimental for runtime performance. The limit has been reduced to
196 50.
197 (merge 07e7dbf jk/reduce-gc-aggressive-depth later to maint).
199 * Other minor doc, test and build updates and code cleanups.
200 (merge e78d57e bw/pathspec-remove-unused-extern-decl later to maint).
201 (merge ce25e4c rs/checkout-some-states-are-const later to maint).
202 (merge a8342a4 rs/strbuf-remove-fix later to maint).
203 (merge b56aa5b rs/unpack-trees-reduce-file-scope-global later to maint).
204 (merge 5efc60c mr/vcs-svn-printf-ulong later to maint).