UI, Workflows & Features
+ * The bash completion script (in contrib/) learned a few options that
+ "git revert" takes.
+
+ * Whitespace breakages in deleted and context lines can also be
+ painted in the output of "git diff" and friends with the new
+ --ws-error-highlight option.
+
* List of commands shown by "git help" are grouped along the workflow
elements to help early learners.
chunks from Perforce, instead of making one call to "p4 changes"
that may trigger "too many rows scanned" error from Perforce.
+ * Unlike "$EDITOR" and "$GIT_EDITOR" that can hold the path to the
+ command and initial options (e.g. "/path/to/emacs -nw"), 'git p4'
+ did not let the shell interpolate the contents of the environment
+ variable that name the editor "$P4EDITOR" (and "$EDITOR", too).
+ This release makes it in line with the rest of Git, as well as with
+ Perforce.
+
+ * A new short-hand <branch>@{push} denotes the remote-tracking branch
+ that tracks the branch at the remote the <branch> would be pushed
+ to.
+
* "git show-branch --topics HEAD" (with no other arguments) did not
do anything interesting. Instead, contrast the given revision
against all the local branches by default.
behaves as if HEAD:Documentation/RelNotes/2.5.0.txt was given as
input instead.
+ * "git send-email" learned the alias file format used by the sendmail
+ program (in an abbreviated form).
+
Performance, Internal Implementation, Development Support etc.
the semantics of the option changed back in Git 1.9 days.
(merge 19d122b pt/pull-tags-error-diag later to maint).
+ * for_each_ref() callback functions were taught to name the objects
+ not with "unsigned char sha1[20]" but with "struct object_id".
+
+ * Error reporting mechanism used in "refs" API has been made more
+ consistent.
+
+ * "git pull" has more test coverage now.
+
Also contains various documentation updates and code clean-ups.
* Memory usage of "git index-pack" has been trimmed by tens of
per-cent.
- (merge c6458e6 nd/slim-index-pack-memory-usage later to maint).
+ (merge a78c5b3 nd/slim-index-pack-memory-usage later to maint).
* "git rev-list --objects $old --not --all" to see if everything that
is reachable from $old is already connected to the existing refs
paths outside the given pathspec.
(merge 838d6a9 dt/clean-pathspec-filter-then-lstat later to maint).
+ * Recent "git prune" traverses young unreachable objects to safekeep
+ old objects in the reachability chain from them, which sometimes
+ caused error messages that are unnecessarily alarming.
+ (merge ce4e7b2 jk/squelch-missing-link-warning-for-unreachable later to maint).
+
+ * The configuration reader/writer uses mmap(2) interface to access
+ the files; when we find a directory, it barfed with "Out of memory?".
+ (merge 9ca0aaf jk/diagnose-config-mmap-failure later to maint).
+
+ * "color.diff.plain" was a misnomer; give it 'color.diff.context' as
+ a more logical synonym.
+ (merge 8dbf3eb jk/color-diff-plain-is-context later to maint).
+
+ * The setup code used to die when core.bare and core.worktree are set
+ inconsistently, even for commands that do not need working tree.
+ (merge fada767 jk/die-on-bogus-worktree-late later to maint).
+
* Code cleanups and documentation updates.
(merge 0269f96 mm/usage-log-l-can-take-regex later to maint).
(merge 64f2589 nd/t1509-chroot-test later to maint).
(merge 22570b6 rs/janitorial later to maint).
(merge 5c2a581 mc/commit-doc-grammofix later to maint).
(merge ce41720 ah/usage-strings later to maint).
+ (merge e6a268c sb/glossary-submodule later to maint).
+ (merge ec48a76 sb/submodule-doc-intro later to maint).
+ (merge 14f8b9b jk/clone-dissociate later to maint).
+ (merge 055c7e9 sb/pack-protocol-mention-smart-http later to maint).
+ (merge 7c37a5d jk/make-fix-dependencies later to maint).
+ (merge fc0aa39 sg/merge-summary-config later to maint).