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1 Git 2.21 Release Notes
2 ======================
4 Backward Compatibility Notes
5 ----------------------------
8 Updates since v2.20
9 -------------------
11 UI, Workflows & Features
13 * The "http.version" configuration variable can be used with recent
14 enough cURL library to force the version of HTTP used to talk when
15 fetching and pushing.
17 * Small fixes and features for fast-export and fast-import, mostly on
18 the fast-export side.
20 * "git push $there $src:$dst" rejects when $dst is not a fully
21 qualified refname and not clear what the end user meant. The
22 codepath has been taught to give a clearer error message, and also
23 guess where the push should go by taking the type of the pushed
24 object into account (e.g. a tag object would want to go under
25 refs/tags/).
27 * "git checkout [<tree-ish>] path..." learned to report the number of
28 paths that have been checked out of the index or the tree-ish,
29 which gives it the same degree of noisy-ness as the case in which
30 the command checks out a branch.
32 * "git quiltimport" learned "--keep-non-patch" option.
34 * "git worktree remove" and "git worktree move" refused to work when
35 there is a submodule involved. This has been loosened to ignore
36 uninitialized submodules.
38 * "git cherry-pick -m1" was forbidden when picking a non-merge
39 commit, even though there _is_ parent number 1 for such a commit.
40 This was done to avoid mistakes back when "cherry-pick" was about
41 picking a single commit, but is no longer useful with "cherry-pick"
42 that can pick a range of commits. Now the "-m$num" option is
43 allowed when picking any commit, as long as $num names an existing
44 parent of the commit.
46 * Update "git multimail" from the upstream.
48 * "git p4" update.
50 * The "--format=<placeholder>" option of for-each-ref, branch and tag
51 learned to show a few more traits of objects that can be learned by
52 the object_info API.
54 * "git rebase -i" learned to re-execute a command given with 'exec'
55 to run after it failed the last time.
57 * "git diff --color-moved-ws" updates.
59 * Custom userformat "log --format" learned %S atom that stands for
60 the tip the traversal reached the commit from, i.e. --source.
63 Performance, Internal Implementation, Development Support etc.
65 * Code clean-up with optimization for the codepath that checks
66 (non-)existence of loose objects.
68 * More codepaths become aware of working with in-core repository
69 instance other than the default "the_repository".
71 * The "strncat()" function is now among the banned functions.
73 * Portability updates for the HPE NonStop platform.
75 * Earlier we added "-Wformat-security" to developer builds, assuming
76 that "-Wall" (which includes "-Wformat" which in turn is required
77 to use "-Wformat-security") is always in effect. This is not true
78 when config.mak.autogen is in use, unfortunately. This has been
79 fixed by unconditionally adding "-Wall" to developer builds.
81 * The loose object cache used to optimize existence look-up has been
82 updated.
84 * Flaky tests can now be repeatedly run under load with the
85 "--stress" option.
86 (merge fb7d1e3ac8 sg/stress-test later to maint).
88 * Documentation/Makefile is getting prepared for manpage
89 localization.
91 * "git fetch-pack" now can talk the version 2 protocol.
93 * sha-256 hash has been added and plumbed through the code to allow
94 building Git with the "NewHash".
96 * Debugging help for http transport.
98 * "git fetch --deepen=<more>" has been corrected to work over v2
99 protocol.
101 * The code to walk tree objects has been taught that we may be
102 working with object names that are not computed with SHA-1.
105 Fixes since v2.20
106 -----------------
108 * Updates for corner cases in merge-recursive.
109 (merge cc4cb0902c en/merge-path-collision later to maint).
111 * "git checkout frotz" (without any double-dash) avoids ambiguity by
112 making sure 'frotz' cannot be interpreted as a revision and as a
113 path at the same time. This safety has been updated to check also
114 a unique remote-tracking branch 'frotz' in a remote, when dwimming
115 to create a local branch 'frotz' out of a remote-tracking branch
116 'frotz' from a remote.
117 (merge be4908f103 nd/checkout-dwim-fix later to maint).
119 * Refspecs configured with "git -c var=val clone" did not propagate
120 to the resulting repository, which has been corrected.
121 (merge 7eae4a3ac4 sg/clone-initial-fetch-configuration later to maint).
123 * A properly configured username/email is required under
124 user.useConfigOnly in order to create commits; now "git stash"
125 (even though it creates commit objects to represent stash entries)
126 command is exempt from the requirement.
127 (merge 3bc2111fc2 sd/stash-wo-user-name later to maint).
129 * The http-backend CGI process did not correctly clean up the child
130 processes it spawns to run upload-pack etc. when it dies itself,
131 which has been corrected.
132 (merge 02818a98d7 mk/http-backend-kill-children-before-exit later to maint).
134 * "git rev-list --exclude-promisor-objects" had to take an object
135 that does not exist locally (and is lazily available) from the
136 command line without barfing, but the code dereferenced NULL.
137 (merge 4cf67869b2 md/list-lazy-objects-fix later to maint).
139 * The traversal over tree objects has learned to honor
140 ":(attr:label)" pathspec match, which has been implemented only for
141 enumerating paths on the filesystem.
142 (merge 5a0b97b34c nd/attr-pathspec-in-tree-walk later to maint).
144 * BSD port updates.
145 (merge 4e3ecbd439 cb/openbsd-allows-reading-directory later to maint).
146 (merge b6bdc2a0f5 cb/t5004-empty-tar-archive-fix later to maint).
147 (merge 82cbc8cde2 cb/test-lint-cp-a later to maint).
149 * Lines that begin with a certain keyword that come over the wire, as
150 well as lines that consist only of one of these keywords, ought to
151 be painted in color for easier eyeballing, but the latter was
152 broken ever since the feature was introduced in 2.19, which has
153 been corrected.
154 (merge 1f67290450 hn/highlight-sideband-keywords later to maint).
156 * "git log -G<regex>" looked for a hunk in the "git log -p" patch
157 output that contained a string that matches the given pattern.
158 Optimize this code to ignore binary files, which by default will
159 not show any hunk that would match any pattern (unless textconv or
160 the --text option is in effect, that is).
161 (merge e0e7cb8080 tb/log-G-binary later to maint).
163 * "git submodule update" ought to use a single job unless asked, but
164 by mistake used multiple jobs, which has been fixed.
165 (merge e3a9d1aca9 sb/submodule-fetchjobs-default-to-one later to maint).
167 * "git stripspace" should be usable outside a git repository, but
168 under the "-s" or "-c" mode, it didn't.
169 (merge 957da75802 jn/stripspace-wo-repository later to maint).
171 * Some of the documentation pages formatted incorrectly with
172 Asciidoctor, which have been fixed.
173 (merge b62eb1d2f4 ma/asciidoctor later to maint).
175 * The core.worktree setting in a submodule repository should not be
176 pointing at a directory when the submodule loses its working tree
177 (e.g. getting deinit'ed), but the code did not properly maintain
178 this invariant.
180 * With zsh, "git cmd path<TAB>" was completed to "git cmd path name"
181 when the completed path has a special character like SP in it,
182 without any attempt to keep "path name" a single filename. This
183 has been fixed to complete it to "git cmd path\ name" just like
184 Bash completion does.
186 * The test suite tried to see if it is run under bash, but the check
187 itself failed under some other implementations of shell (notably
188 under NetBSD). This has been corrected.
189 (merge 54ea72f09c sg/test-bash-version-fix later to maint).
191 * "git gc" and "git repack" did not close the open packfiles that
192 they found unneeded before removing them, which didn't work on a
193 platform incapable of removing an open file. This has been
194 corrected.
195 (merge 5bdece0d70 js/gc-repack-close-before-remove later to maint).
197 * The code to drive GIT_EXTERNAL_DIFF command relied on the string
198 returned from getenv() to be non-volatile, which is not true, that
199 has been corrected.
200 (merge 6776a84dae kg/external-diff-save-env later to maint).
202 * There were many places the code relied on the string returned from
203 getenv() to be non-volatile, which is not true, that have been
204 corrected.
205 (merge 0da0e9268b jk/save-getenv-result later to maint).
207 * The v2 upload-pack protocol implementation failed to honor
208 hidden-ref configuration, which has been corrected.
209 (merge e20b4192a3 jk/proto-v2-hidden-refs-fix later to maint).
211 * "git fetch --recurse-submodules" may not fetch the necessary commit
212 that is bound to the superproject, which is getting corrected.
213 (merge be76c21282 sb/submodule-recursive-fetch-gets-the-tip later to maint).
215 * "git rebase" internally runs "checkout" to switch between branches,
216 and the command used to call the post-checkout hook, but the
217 reimplementation stopped doing so, which is getting fixed.
219 * "git add -e" got confused when the change it wants to let the user
220 edit is smaller than the previous change that was left over in a
221 temporary file.
222 (merge fa6f225e01 js/add-e-clear-patch-before-stating later to maint).
224 * Code cleanup, docfix, build fix, etc.
225 (merge 89ba9a79ae hb/t0061-dot-in-path-fix later to maint).
226 (merge d173e799ea sb/diff-color-moved-config-option-fixup later to maint).
227 (merge a8f5a59067 en/directory-renames-nothanks-doc-update later to maint).
228 (merge ec36c42a63 nd/indentation-fix later to maint).
229 (merge f116ee21cd do/gitweb-strict-export-conf-doc later to maint).
230 (merge 112ea42663 fd/gitweb-snapshot-conf-doc-fix later to maint).
231 (merge 1cadad6f65 tb/use-common-win32-pathfuncs-on-cygwin later to maint).
232 (merge 57e9dcaa65 km/rebase-doc-typofix later to maint).
233 (merge b8b4cb27e6 ds/gc-doc-typofix later to maint).
234 (merge 3b3357626e nd/style-opening-brace later to maint).
235 (merge b4583d5595 es/doc-worktree-guessremote-config later to maint).
236 (merge cce99cd8c6 ds/commit-graph-assert-missing-parents later to maint).
237 (merge 0650614982 cy/completion-typofix later to maint).
238 (merge 6881925ef5 rs/sha1-file-close-mapped-file-on-error later to maint).
239 (merge bd8d6f0def en/show-ref-doc-fix later to maint).
240 (merge 1747125e2c cc/parial-clone-doc-typofix later to maint).
241 (merge e01378753d cc/fetch-error-message-fix later to maint).
242 (merge 54e8c11215 jk/remote-insteadof-cleanup later to maint).