1Git 2.6 Release Notes 2===================== 3 4Updates since v2.5 5------------------ 6 7UI, Workflows & Features 8 9 * An asterisk as a substring (as opposed to the entirety) of a path 10 component for both side of a refspec, e.g. 11 "refs/heads/o*:refs/remotes/heads/i*", is now allowed. 12 13 * New userdiff pattern definition for fountain screenwriting markup 14 format has been added. 15 16 * "git log" and friends learned a new "--date=format:..." option to 17 format timestamps using system's strftime(3). 18 19 * "git fast-import" learned to respond to the get-mark command via 20 its cat-blob-fd interface. 21 22 * "git rebase -i" learned "drop commit-object-name subject" command 23 as another way to skip replaying of a commit. 24 25 * A new configuration variable can enable "--follow" automatically 26 when "git log" is run with one pathspec argument. 27 28 * "git status" learned to show a more detailed information regarding 29 the "rebase -i" session in progress. 30 31 * "git cat-file" learned "--batch-all-objects" option to enumerate all 32 available objects in the repository more quickly than "rev-list 33 --all --objects" (the output includes unreachable objects, though). 34 35 * "git fsck" learned to ignore errors on a set of known-to-be-bad 36 objects, and also allows the warning levels of various kinds of 37 non-critical breakages to be tweaked. 38 39 * "git rebase -i"'s list of todo is made configurable. 40 41 * "git send-email" now performs alias-expansion on names that are 42 given via --cccmd, etc. 43 44 * An environment variable GIT_REPLACE_REF_BASE tells Git to look into 45 refs hierarchy other than refs/replace/ for the object replacement 46 data. 47 48 49Performance, Internal Implementation, Development Support etc. 50 51 * In preparation for allowing different "backends" to store the refs 52 in a way different from the traditional "one ref per file in 53 $GIT_DIR or in a $GIT_DIR/packed-refs file" filesystem storage, 54 direct filesystem access to ref-like things like CHERRY_PICK_HEAD 55 from scripts and programs has been reduced. 56 57 * Computation of untracked status indicator by bash prompt 58 script (in contrib/) has been optimized. 59 60 * Memory use reduction when commit-slab facility is used to annotate 61 sparsely (which is not recommended in the first place). 62 63 * Clean up refs API and make "git clone" less intimate with the 64 implementation detail. 65 66 * "git pull" was reimplemented in C. 67 68 * The packet tracing machinery allows to capture an incoming pack 69 data to a file for debugging. 70 71 * Move machinery to parse human-readable scaled numbers like 1k, 4M, 72 and 2G as an option parameter's value from pack-objects to 73 parse-options API, to make it available to other codepaths. 74 75 * "git verify-tag" and "git verify-commit" have been taught to share 76 more code, and then learned to optionally show the verification 77 message from the underlying GPG implementation. 78 79 * Various enhancements around "git am" reading patches generated by 80 foreign SCM have been made. 81 82 * Ref listing by "git branch -l" and "git tag -l" commands has 83 started to be rebuilt, based on the for-each-ref machinery. 84 85 * The code to perform multi-tree merges has been taught to repopulate 86 the cache-tree upon a successful merge into the index, so that 87 subsequent "diff-index --cached" (hence "status") and "write-tree" 88 (hence "commit") will go faster. 89 90 The same logic in "git checkout" may now be removed, but that is a 91 separate issue. 92 93 * Tests that assume how reflogs are represented on the filesystem too 94 much have been corrected. 95 96 * "git am" has been rewritten in "C". 97 98 99Also contains various documentation updates and code clean-ups. 100 101 102Fixes since v2.5 103---------------- 104 105Unless otherwise noted, all the fixes since v2.5 in the maintenance 106track are contained in this release (see the maintenance releases' 107notes for details). 108 109 * "git subtree" (in contrib/) depended on "git log" output to be 110 stable, which was a no-no. Apply a workaround to force a 111 particular date format. 112 (merge e7aac44 da/subtree-date-confusion later to maint). 113 114 * An attempt to delete a ref by pushing into a repositorywhose HEAD 115 symbolic reference points at an unborn branch that cannot be 116 created due to ref D/F conflict (e.g. refs/heads/a/b exists, HEAD 117 points at refs/heads/a) failed. 118 (merge b112b14 jx/do-not-crash-receive-pack-wo-head later to maint). 119 120 * The low-level "git send-pack" did not honor 'user.signingkey' 121 configuration variable when sending a signed-push. 122 (merge d830d39 db/send-pack-user-signingkey later to maint). 123 124 * "sparse checkout" misbehaved for a path that is excluded from the 125 checkout when switching between branches that differ at the path. 126 (merge 7d78241 as/sparse-checkout-removal later to maint). 127 128 * An experimental "untracked cache" feature used uname(2) in a 129 slightly unportable way. 130 (merge 100e433 cb/uname-in-untracked later to maint). 131 132 * A "rebase" replays changes of the local branch on top of something 133 else, as such they are placed in stage #3 and referred to as 134 "theirs", while the changes in the new base, typically a foreign 135 work, are placed in stage #2 and referred to as "ours". Clarify 136 the "checkout --ours/--theirs". 137 (merge f303016 se/doc-checkout-ours-theirs later to maint). 138 139 * The "rev-parse --parseopt" mode parsed the option specification 140 and the argument hint in a strange way to allow '=' and other 141 special characters in the option name while forbidding them from 142 the argument hint. This made it impossible to define an option 143 like "--pair <key>=<value>" with "pair=key=value" specification, 144 which instead would have defined a "--pair=key <value>" option. 145 (merge 2d893df ib/scripted-parse-opt-better-hint-string later to maint). 146 147 * Often a fast-import stream builds a new commit on top of the 148 previous commit it built, and it often unconditionally emits a 149 "from" command to specify the first parent, which can be omitted in 150 such a case. This caused fast-import to forget the tree of the 151 previous commit and then re-read it from scratch, which was 152 inefficient. Optimize for this common case. 153 (merge 0df3245 mh/fast-import-optimize-current-from later to maint). 154 155 * Running an aliased command from a subdirectory when the .git thing 156 in the working tree is a gitfile pointing elsewhere did not work. 157 (merge d95138e nd/export-worktree later to maint). 158 159 * "Is this subdirectory a separate repository that should not be 160 touched?" check "git clean" was inefficient. This was replaced 161 with a more optimized check. 162 (merge 38ae878 ee/clean-remove-dirs later to maint). 163 164 * The "new-worktree-mode" hack in "checkout" that was added in 165 nd/multiple-work-trees topic has been removed by updating the 166 implementation of new "worktree add". 167 (merge 65f9b75 es/worktree-add-cleanup later to maint). 168 169 * Remove remaining cruft from "git checkout --to", which 170 transitioned to "git worktree add". 171 (merge 114ff88 es/worktree-add later to maint). 172 173 * Code cleanups and documentation updates. 174 (merge 1c601af es/doc-clean-outdated-tools later to maint). 175 (merge 3581304 kn/tag-doc-fix later to maint). 176 (merge 3a59e59 kb/i18n-doc later to maint). 177 (merge 45abdee sb/remove-unused-var-from-builtin-add later to maint). 178 (merge 14691e3 sb/parse-options-codeformat later to maint). 179 (merge 4a6ada3 ad/bisect-cleanup later to maint).