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1Git v2.47 Release Notes
2=======================
3
4UI, Workflows & Features
5------------------------
6
7 * Many Porcelain commands that internally use the merge machinery
8 were taught to consistently honor the diff.algorithm configuration.
9
10 * A few descriptions in "git show-ref -h" have been clarified.
11
12 * A 'P' command to "git add -p" that passes the patch hunk to the
13 pager has been added.
14
15 * "git grep -W" omits blank lines that follow the found function at
16 the end of the file, just like it omits blank lines before the next
17 function.
18
19 * The value of http.proxy can have "path" at the end for a socks
20 proxy that listens to a unix-domain socket, but we started to
21 discard it when we taught proxy auth code path to use the
22 credential helpers, which has been corrected.
23
24 * The code paths to compact multiple reftable files have been updated
25 to correctly deal with multiple compaction triggering at the same
26 time.
27
28 * Support to specify ref backend for submodules has been enhanced.
29
30 * "git svn" has been taught about svn:global-ignores property
31 recent versions of Subversion has.
32
33 * The default object hash and ref backend format used to be settable
34 only with explicit command line option to "git init" and
35 environment variables, but now they can be configured in the user's
36 global and system wide configuration.
37
38 * "git send-email" learned "--translate-aliases" option that reads
39 addresses from the standard input and emits the result of applying
40 aliases on them to the standard output.
41
42 * 'git for-each-ref' learned a new "--format" atom to find the branch
43 that the history leading to a given commit "%(is-base:<commit>)" is
44 likely based on.
45
46 * The command line prompt support used to be littered with bash-isms,
47 which has been corrected to work with more shells.
48
49 * Support for the RUNTIME_PREFIX feature has been added to z/OS port.
50
51 * "git send-email" learned "--mailmap" option to allow rewriting the
52 recipient addresses.
53
54 * "git mergetool" learned to use VSCode as a merge backend.
55
56 * "git pack-redundant" has been marked for removal in Git 3.0.
57
58 * One-line messages to "die" and other helper functions will get LF
59 added by these helper functions, but many existing messages had an
60 unnecessary LF at the end, which have been corrected.
61
62 * The "scalar clone" command learned the "--no-tags" option.
63
64 * The environment GIT_ADVICE has been intentionally kept undocumented
65 to discourage its use by interactive users. Add documentation to
66 help tool writers.
67
68 * "git apply --3way" learned to take "--ours" and other options.
69
70
71Performance, Internal Implementation, Development Support etc.
72--------------------------------------------------------------
73
74 * A build tweak knob has been simplified by not setting the value
75 that is already the default; another unused one has been removed.
76
77 * A CI job that use clang-format to check coding style issues in new
78 code has been added.
79
80 * The reviewing guidelines document now explicitly encourages people
81 to give positive reviews and how.
82
83 * Test script linter has been updated to catch an attempt to use
84 one-shot export construct "VAR=VAL func" for shell functions (which
85 does not work for some shells) better.
86
87 * Some project conventions have been added to CodingGuidelines.
88
89 * In the refs subsystem, implicit reliance of the_repository has been
90 eliminated; the repository associated with the ref store object is
91 used instead.
92
93 * Various tests in reftable library have been rewritten using the unit test
94 framework.
95
96 * A test that fails on an unusually slow machine was found, and made
97 less likely to cause trouble by lengthening the expiry value it
98 uses.
99
100 * An existing test of hashmap API has been rewritten with the
101 unit-test framework.
102
103 * A policy document that describes platform support levels and
104 expectation on platform stakeholders has been introduced.
105
106 * The refs API has been taught to give symref target information to
107 the users of ref iterators, allowing for-each-ref and friends to
108 avoid an extra ref_resolve_* API call per a symbolic ref.
109
110 * Unit-test framework has learned a simple control structure to allow
111 embedding test statements in-line instead of having to create a new
112 function to contain them.
113
114 * Incremental updates of multi-pack index files is getting worked on.
115
116 * Use of API functions that implicitly depend on the_repository
117 object in the config subsystem has been rewritten to pass a
118 repository object through the callchain.
119
120 * Unused parameters have been either marked as UNUSED to squelch
121 -Wunused warnings or dropped from many functions..
122
123 * The code in the reftable library has been cleaned up by discarding
124 unused "generic" interface.
125
126 * The underlying machinery for "git diff-index" has long been made to
127 expand the sparse index as needed, but the command fully expanded
128 the sparse index upfront, which now has been taught not to do.
129
130 * More trace2 events at key points on push and fetch code paths have
131 been added.
132
133 * Make our codebase compilable with the -Werror=unused-parameter
134 option.
135
136 * "git cat-file" works well with the sparse-index, and gets marked as
137 such.
138
139 * CI started failing completely for linux32 jobs, as the step to
140 upload failed test directory uses GitHub actions that is deprecated
141 and is now disabled.
142
143 * Import clar unit tests framework libgit2 folks invented for our
144 use.
145
146 * The error messages from the test script checker have been improved.
147
148 * The convention to calling into built-in command implementation has
149 been updated to pass the repository, if known, together with the
150 prefix value.
151
152 * "git apply" had custom buffer management code that predated before
153 use of strbuf got widespread, which has been updated to use strbuf,
154 which also plugged some memory leaks.
155
156 * The reftable backend learned to more efficiently handle exclude
157 patterns while enumerating the refs.
158
159 * CI updates. FreeBSD image has been updated to 13.4.
160 (merge 2eeb29702e cb/ci-freebsd-13-4 later to maint).
161
162 * Give timeout to the locking code to write to reftable, instead of
163 failing on the first failure without retrying.
164
165 * The checksum at the tail of files are now computed without
166 collision detection protection. This is safe as the consumer of
167 the information to protect itself from replay attacks checks for
168 hash collisions independently.
169
170
171Fixes since v2.46
172-----------------
173
174 * "git add -p" by users with diff.suppressBlankEmpty set to true
175 failed to parse the patch that represents an unmodified empty line
176 with an empty line (not a line with a single space on it), which
177 has been corrected.
178
179 * "git checkout --ours" (no other arguments) complained that the
180 option is incompatible with branch switching, which is technically
181 correct, but found confusing by some users. It now says that the
182 user needs to give pathspec to specify what paths to checkout.
183
184 * It has been documented that we avoid "VAR=VAL shell_func" and why.
185
186 * "git rebase --help" referred to "offset" (the difference between
187 the location a change was taken from and the change gets replaced)
188 incorrectly and called it "fuzz", which has been corrected.
189
190 * "git notes add -m '' --allow-empty" and friends that take prepared
191 data to create notes should not invoke an editor, but it started
192 doing so since Git 2.42, which has been corrected.
193
194 * An expensive operation to prepare tracing was done in re-encoding
195 code path even when the tracing was not requested, which has been
196 corrected.
197
198 * More leakfixes.
199
200 * The credential helper to talk to OSX keychain sometimes sent
201 garbage bytes after the username, which has been corrected.
202
203 * A recent update broke "git ls-remote" used outside a repository,
204 which has been corrected.
205
206 * The patch parser in 'git apply' has been a bit more lenient against
207 unexpected mode bits, like 100664, recorded on extended header lines.
208
209 * "git config --value=foo --fixed-value section.key newvalue" barfed
210 when the existing value in the configuration file used the
211 valueless true syntax, which has been corrected.
212
213 * The patch parser in "git patch-id" has been tightened to avoid
214 getting confused by lines that look like a patch header in the log
215 message.
216
217 * "git reflog expire" failed to honor annotated tags when computing
218 reachable commits.
219
220 * A flakey test and incorrect calls to strtoX() functions have been
221 fixed.
222
223 * Follow-up on 2.45.1 regression fix.
224
225 * "git rev-list ... | git diff-tree -p --remerge-diff --stdin" should
226 behave more or less like "git log -p --remerge-diff" but instead it
227 crashed, forgetting to prepare a temporary object store needed.
228
229 * "git bundle unbundle" outside a repository triggered a BUG()
230 unnecessarily, which has been corrected.
231
232 * Maintenance tasks other than "gc" now properly go background when
233 "git maintenance" runs them.
234
235 * We created a useless pseudo-merge reachability bitmap that is about
236 0 commits, and attempted to include commits that are not in packs,
237 which made no sense. These bugs have been corrected.
238 (merge a72dfab8b8 tb/pseudo-merge-bitmap-fixes later to maint).
239
240 * "git rebase -x --quiet" was not quiet, which was corrected.
241
242 * The code path for compacting reftable files saw some bugfixes
243 against concurrent operation.
244
245 * The code forgot to discard unnecessary in-core commit buffer data
246 for commits that "git log --skip=<number>" traversed but omitted
247 from the output, which has been corrected.
248
249 * "git verify-pack" and "git index-pack" started dying outside a
250 repository, which has been corrected.
251
252 * A data corruption bug when multi-pack-index is used and the same
253 objects are stored in multiple packfiles has been corrected.
254
255 * "git pack-refs --auto" for the files backend was too aggressive,
256 which has been a bit tamed.
257 (merge c3459ae9ef ps/pack-refs-auto-heuristics later to maint).
258
259 * A file descriptor left open is now properly closed when "git
260 sparse-checkout" updates the sparse patterns.
261
262 * In a few corner cases "git diff --exit-code" failed to report
263 "changes" (e.g., renamed without any content change), which has
264 been corrected.
265
266 * Cygwin does have /dev/tty support that is needed by things like
267 single-key input mode.
268
269 * The interpret-trailers command failed to recognise the end of the
270 message when the commit log ends in an incomplete line.
271
272 * "git rebase --autostash" failed to resurrect the autostashed
273 changes when the command gets aborted after giving back control
274 asking for hlep in conflict resolution.
275 (merge bf6ab087d1 pw/rebase-autostash-fix later to maint).
276
277 * The "imap-send" now allows to be compiled with NO_OPENSSL and
278 OPENSSL_SHA1 defined together.
279 (merge 997950a750 jk/no-openssl-with-openssl-sha1 later to maint).
280
281 * The support to customize build options to adjust for older versions
282 and/or older systems for the interop tests has been improved.
283 (merge 22ef5f02a8 jk/interop-test-build-options later to maint).
284
285 * Update the character width table for Unicode 16.
286 (merge 44dc651132 bb/unicode-width-table-16 later to maint).
287
288 * In Git 2.39, Git.pm stopped working in a bare repository, which has
289 been corrected.
290 (merge d3edb0bdde jk/git-pm-bare-repo-fix later to maint).
291
292 * When a remote-helper dies before Git writes to it, SIGPIPE killed
293 Git silently. We now explain the situation a bit better to the end
294 user in our error message.
295 (merge 6e7fac9bca jk/diag-unexpected-remote-helper-death later to maint).
296
297 * A few usability fixes to "git jump" (in contrib/).
298 (merge 083b82544d jk/jump-quickfix-fixes later to maint).
299
300 * "git diff --exit-code" ignored modified binary files, which has
301 been corrected.
302 (merge 9a41735af6 rs/diff-exit-code-binary later to maint).
303
304 * When a subprocess to work in a submodule spawned by "git submodule"
305 fails with SIGPIPE, the parent Git process caught the death of it,
306 but gave a generic "failed to work in that submodule", which was
307 misleading. We now behave as if the parent got SIGPIPE and die.
308 (merge 082caf527e pw/submodule-process-sigpipe later to maint).
309
310 * "git archive" with pathspec magic that uses the attribute
311 information did not work well, which has been corrected.
312 (merge 296743a7ca rs/archive-with-attr-pathspec-fix later to maint).
313
314 * Background tasks "git maintenance" runs may need to use credential
315 information when going over the network, but a credential helper
316 may work only in an interactive environment, and end up blocking a
317 scheduled task waiting for UI. Credential helpers can now behave
318 differently when they are not running interactively.
319 (merge b9183b0a02 ds/background-maintenance-with-credential later to maint).
320
321 * "git --git-dir=nowhere cmd" failed to properly notice that it
322 wasn't in any repository while processing includeIf.onbranch
323 configuration and instead crashed.
324
325 * When "git sparse-checkout disable" turns a sparse checkout into a
326 regular checkout, the index is fully expanded. This totally
327 expected behaviour however had an "oops, we are expanding the
328 index" advice message, which has been corrected.
329 (merge 537e516a39 ds/sparse-checkout-expansion-advice later to maint).
330
331 * macOS with fsmonitor daemon can hang forever when a submodule is
332 involved, which has been corrected.
333
334 * Other code cleanup, docfix, build fix, etc.
335 (merge be10ac7037 jc/mailinfo-header-cleanup later to maint).
336 (merge 4460e052e0 jc/range-diff-lazy-setup later to maint).
337 (merge 0627c58e7a ak/typofixes later to maint).
338 (merge 83799f1500 jk/t9001-deflake later to maint).
339 (merge e02cc08a88 ak/typofix-2.46-maint later to maint).
340 (merge 5c5d29e1c4 ps/ci-gitlab-upgrade later to maint).
341 (merge 9c4c840901 jc/doc-discarding-stalled-topics later to maint).
342 (merge 5e6f359f6b ds/read-cache-mempool-leakfix later to maint).