1Git 2.22 Release Notes 2====================== 3 4Updates since v2.21 5------------------- 6 7UI, Workflows & Features 8 9 * "git checkout --no-overlay" can be used to trigger a new mode of 10 checking out paths out of the tree-ish, that allows paths that 11 match the pathspec that are in the current index and working tree 12 and are not in the tree-ish. 13 14 * The %(trailers) formatter in "git log --format=..." now allows to 15 optionally pick trailers selectively by keyword, show only values, 16 etc. 17 18 * Four new configuration variables {author,committer}.{name,email} 19 have been introduced to override user.{name,email} in more specific 20 cases. 21 22 * Command-line completion (in contrib/) learned to tab-complete the 23 "git submodule absorbgitdirs" subcommand. 24 25 * "git branch" learned a new subcommand "--show-current". 26 27 * Output from "diff --cc" did not show the original paths when the 28 merge involved renames. A new option adds the paths in the 29 original trees to the output. 30 31 * The command line completion (in contrib/) has been taught to 32 complete more subcommand parameters. 33 34 * The final report from "git bisect" used to show the suspected 35 culprit using a raw "diff-tree", with which there is no output for 36 a merge commit. This has been updated to use a more modern and 37 human readable output that still is concise enough. 38 39 * "git rebase --rebase-merges" replaces its old "--preserve-merges" 40 option; the latter is now marked as deprecated. 41 42 * Error message given while cloning with --recurse-submodules has 43 been updated. 44 45 * The completion helper code now pays attention to repository-local 46 configuration (when available), which allows --list-cmds to honour 47 a repository specific setting of completion.commands, for example. 48 49 * "git mergetool" learned to offer Sublime Merge (smerge) as one of 50 its backends. 51 52 53Performance, Internal Implementation, Development Support etc. 54 55 * The diff machinery, one of the oldest parts of the system, which 56 long predates the parse-options API, uses fairly long and complex 57 handcrafted option parser. This is being rewritten to use the 58 parse-options API. 59 60 * The implementation of pack-redundant has been updated for 61 performance in a repository with many packfiles. 62 63 * A more structured way to obtain execution trace has been added. 64 65 * "git prune" has been taught to take advantage of reachability 66 bitmap when able. 67 68 * The command line parser of "git commit-tree" has been rewritten to 69 use the parse-options API. 70 71 * Suggest GitGitGadget instead of submitGit as a way to submit 72 patches based on GitHub PR to us. 73 74 * The test framework has been updated to help developers by making it 75 easier to run most of the tests under different versions of 76 over-the-wire protocols. 77 78 * Dev support update to make it easier to compare two formatted 79 results from our documentation. 80 81 * The scripted "git rebase" implementation has been retired. 82 83 * "git multi-pack-index verify" did not scale well with the number of 84 packfiles, which is being improved. 85 86 * "git stash" has been rewritten in C. 87 88 * The "check-docs" Makefile target to support developers has been 89 updated. 90 91 * The tests have been updated not to rely on the abbreviated option 92 names the parse-options API offers, to protect us from an 93 abbreviated form of an option that used to be unique within the 94 command getting non-unique when a new option that share the same 95 prefix is added. 96 97 98Fixes since v2.21 99----------------- 100 101 * "git prune-packed" did not notice and complain against excess 102 arguments given from the command line, which now it does. 103 (merge 9b0bd87ed2 rj/prune-packed-excess-args later to maint). 104 105 * Split-index fix. 106 (merge 6e37c8ed3c nd/split-index-null-base-fix later to maint). 107 108 * "git diff --no-index" may still want to access Git goodies like 109 --ext-diff and --textconv, but so far these have been ignored, 110 which has been corrected. 111 (merge 287ab28bfa jk/diff-no-index-initialize later to maint). 112 113 * Unify RPC code for smart http in protocol v0/v1 and v2, which fixes 114 a bug in the latter (lack of authentication retry) and generally 115 improves the code base. 116 (merge a97d00799a jt/http-auth-proto-v2-fix later to maint). 117 118 * The include file compat/bswap.h has been updated so that it is safe 119 to (accidentally) include it more than once. 120 (merge 33aa579a55 jk/guard-bswap-header later to maint). 121 122 * The set of header files used by "make hdr-check" unconditionally 123 included sha256/gcrypt.h, even when it is not used, causing the 124 make target to fail. We now skip it when GCRYPT_SHA256 is not in 125 use. 126 (merge f23aa18e7f rj/hdr-check-gcrypt-fix later to maint). 127 128 * The Makefile uses 'find' utility to enumerate all the *.h header 129 files, which is expensive on platforms with slow filesystems; it 130 now optionally uses "ls-files" if working within a repository, 131 which is a trick similar to how all sources are enumerated to run 132 ETAGS on. 133 (merge 92b88eba9f js/find-lib-h-with-ls-files-when-possible later to maint). 134 135 * "git rebase" that was reimplemented in C did not set ORIG_HEAD 136 correctly, which has been corrected. 137 (merge cbd29ead92 js/rebase-orig-head-fix later to maint). 138 139 * Dev support. 140 (merge f545737144 js/stress-test-ui-tweak later to maint). 141 142 * CFLAGS now can be tweaked when invoking Make while using 143 DEVELOPER=YesPlease; this did not work well before. 144 (merge 6d5d4b4e93 ab/makefile-help-devs-more later to maint). 145 146 * "git fsck --connectivity-only" omits computation necessary to sift 147 the objects that are not reachable from any of the refs into 148 unreachable and dangling. This is now enabled when dangling 149 objects are requested (which is done by default, but can be 150 overridden with the "--no-dangling" option). 151 (merge 8d8c2a5aef jk/fsck-doc later to maint). 152 153 * On platforms where "git fetch" is killed with SIGPIPE (e.g. OSX), 154 the upload-pack that runs on the other end that hangs up after 155 detecting an error could cause "git fetch" to die with a signal, 156 which led to a flakey test. "git fetch" now ignores SIGPIPE during 157 the network portion of its operation (this is not a problem as we 158 check the return status from our write(2)s). 159 (merge 143588949c jk/no-sigpipe-during-network-transport later to maint). 160 161 * A recent update broke "is this object available to us?" check for 162 well-known objects like an empty tree (which should yield "yes", 163 even when there is no on-disk object for an empty tree), which has 164 been corrected. 165 (merge f06ab027ef jk/virtual-objects-do-exist later to maint). 166 167 * The setup code has been cleaned up to avoid leaks around the 168 repository_format structure. 169 (merge e8805af1c3 ma/clear-repository-format later to maint). 170 171 * "git config --type=color ..." is meant to replace "git config --get-color" 172 but there is a slight difference that wasn't documented, which is 173 now fixed. 174 (merge cd8e7593b9 jk/config-type-color-ends-with-lf later to maint). 175 176 * When the "clean" filter can reduce the size of a huge file in the 177 working tree down to a small "token" (a la Git LFS), there is no 178 point in allocating a huge scratch area upfront, but the buffer is 179 sized based on the original file size. The convert mechanism now 180 allocates very minimum and reallocates as it receives the output 181 from the clean filter process. 182 (merge 02156ab031 jh/resize-convert-scratch-buffer later to maint). 183 184 * "git rebase" uses the refs/rewritten/ hierarchy to store its 185 intermediate states, which inherently makes the hierarchy per 186 worktree, but it didn't quite work well. 187 (merge b9317d55a3 nd/rewritten-ref-is-per-worktree later to maint). 188 189 * "git log -L<from>,<to>:<path>" with "-s" did not suppress the patch 190 output as it should. This has been corrected. 191 (merge 05314efaea jk/line-log-with-patch later to maint). 192 193 * "git worktree add" used to do a "find an available name with stat 194 and then mkdir", which is race-prone. This has been fixed by using 195 mkdir and reacting to EEXIST in a loop. 196 (merge 7af01f2367 ms/worktree-add-atomic-mkdir later to maint). 197 198 * Build update for SHA-1 with collision detection. 199 (merge 07a20f569b jk/sha1dc later to maint). 200 201 * Build procedure has been fixed around use of asciidoctor instead of 202 asciidoc. 203 (merge 185f9a0ea0 ma/asciidoctor-fixes later to maint). 204 205 * remote-http transport did not anonymize URLs reported in its error 206 messages at places. 207 (merge c1284b21f2 js/anonymize-remote-curl-diag later to maint). 208 209 * Error messages given from the http transport have been updated so 210 that they can be localized. 211 (merge ed8b4132c8 js/remote-curl-i18n later to maint). 212 213 * "git init" forgot to read platform-specific repository 214 configuration, which made Windows port to ignore settings of 215 core.hidedotfiles, for example. 216 217 * A corner-case object name ambiguity while the sequencer machinery 218 is working (e.g. "rebase -i -x") has been fixed. 219 220 * "git format-patch" did not diagnose an error while opening the 221 output file for the cover-letter, which has been corrected. 222 (merge 2fe95f494c jc/format-patch-error-check later to maint). 223 224 * "git checkout -f <branch>" while the index has an unmerged path 225 incorrectly left some paths in an unmerged state, which has been 226 corrected. 227 228 * A corner case bug in the refs API has been corrected. 229 (merge d3322eb28b jk/refs-double-abort later to maint). 230 231 * Unicode update. 232 (merge 584b62c37b bb/unicode-12 later to maint). 233 234 * dumb-http walker has been updated to share more error recovery 235 strategy with the normal codepath. 236 237 * A buglet in configuration parser has been fixed. 238 (merge 19e7fdaa58 nd/include-if-wildmatch later to maint). 239 240 * The documentation for "git read-tree --reset -u" has been updated. 241 (merge b5a0bd694c nd/read-tree-reset-doc later to maint). 242 243 * Code cleanup, docfix, build fix, etc. 244 (merge 11f470aee7 jc/test-yes-doc later to maint). 245 (merge 90503a240b js/doc-symref-in-proto-v1 later to maint). 246 (merge 5c326d1252 jk/unused-params later to maint). 247 (merge 68cabbfda3 dl/doc-submodule-wo-subcommand later to maint). 248 (merge 9903623761 ab/receive-pack-use-after-free-fix later to maint). 249 (merge 1ede45e44b en/merge-options-doc later to maint). 250 (merge 3e14dd2c8e rd/doc-hook-used-in-sample later to maint). 251 (merge c271dc28fd nd/no-more-check-racy later to maint). 252 (merge e6e15194a8 yb/utf-16le-bom-spellfix later to maint). 253 (merge bb101aaf0c rd/attr.c-comment-typofix later to maint). 254 (merge 716a5af812 rd/gc-prune-doc-fix later to maint). 255 (merge 50b206371d js/untravis-windows later to maint). 256 (merge dbf47215e3 js/rebase-recreate-merge later to maint). 257 (merge 56cb2d30f8 dl/reset-doc-no-wrt-abbrev later to maint). 258 (merge 64eca306a2 ja/dir-rename-doc-markup-fix later to maint). 259 (merge af91b0230c dl/ignore-docs later to maint). 260 (merge 59a06e947b ra/t3600-test-path-funcs later to maint). 261 (merge e041d0781b ar/t4150-remove-cruft later to maint). 262 (merge 8d75a1d183 ma/asciidoctor-fixes-more later to maint). 263 (merge 74cc547b0f mh/pack-protocol-doc-fix later to maint). 264 (merge ed31851fa6 ab/doc-misc-typofixes later to maint). 265 (merge a7256debd4 nd/checkout-m-doc-update later to maint). 266 (merge 3a9e1ad78d jt/t5551-protocol-v2-does-not-have-half-auth later to maint). 267 (merge 0b918b75af sg/t5318-cleanup later to maint). 268 (merge 68ed71b53c cb/doco-mono later to maint). 269 (merge a34dca2451 nd/interpret-trailers-docfix later to maint).