learned to also peek into $path for presense of corresponding
repositories of submodules and borrow objects from there when able.
+ * The "git diff --submodule={short,log}" mechanism has been enhanced
+ to allow "--submodule=diff" to show the patch between the submodule
+ commits bound to the superproject.
+
+ * Even though "git hash-objects", which is a tool to take an
+ on-filesystem data stream and put it into the Git object store,
+ allowed to perform the "outside-world-to-Git" conversions (e.g.
+ end-of-line conversions and application of the clean-filter), and
+ it had the feature on by default from very early days, its reverse
+ operation "git cat-file", which takes an object from the Git object
+ store and externalize for the consumption by the outside world,
+ lacked an equivalent mechanism to run the "Git-to-outside-world"
+ conversion. The command learned the "--filters" option to do so.
+
Performance, Internal Implementation, Development Support etc.
further be used to teach git-prompt (in contrib/) to make fewer
calls to git.
+ * Extract a small helper out of the function that reads the authors
+ script file "git am" internally uses.
+ (merge a77598e jc/am-read-author-file later to maint).
+
+ * Lifts calls to exit(2) and die() higher in the callchain in
+ sequencer.c files so that more helper functions in it can be used
+ by callers that want to handle error conditions themselves.
+
+ * "git am" has been taught to make an internal call to "git apply"'s
+ innards without spawning the latter as a separate process.
+
+ * The ref-store abstraction was introduced to the refs API so that we
+ can plug in different backends to store references.
+
+ * The "unsigned char sha1[20]" to "struct object_id" conversion
+ continues. Notable changes in this round includes that ce->sha1,
+ i.e. the object name recorded in the cache_entry, turns into an
+ object_id.
+
+ * JGit can show a fake ref "capabilities^{}" to "git fetch" when it
+ does not advertise any refs, but "git fetch" was not prepared to
+ see such an advertisement. When the other side disconnects without
+ giving any ref advertisement, we used to say "there may not be a
+ repository at that URL", but we may have seen other advertisement
+ like "shallow" and ".have" in which case we definitely know that a
+ repository is there. The code to detect this case has also been
+ updated.
+
+ * Some codepaths in "git pack-objects" were not ready to use an
+ existing pack bitmap; now they are and as the result they have
+ become faster.
+
Also contains various documentation updates and code clean-ups.
* Clarify various ways to specify the "revision ranges" in the
documentation.
- (merge a117be4 po/range-doc later to maint).
* "diff-highlight" script (in contrib/) learned to work better with
"git log -p --graph" output.
- (merge 3dbfe2b bh/diff-highlight-graph later to maint).
+
+ * The test framework left the number of tests and success/failure
+ count in the t/test-results directory, keyed by the name of the
+ test script plus the process ID. The latter however turned out not
+ to serve any useful purpose. The process ID part of the filename
+ has been removed.
+
+ * Having a submodule whose ".git" repository is somehow corrupt
+ caused a few commands that recurse into submodules loop forever.
+
+ * "git symbolic-ref -d HEAD" happily removes the symbolic ref, but
+ the resulting repository becomes an invalid one. Teach the command
+ to forbid removal of HEAD.
+
+ * A test spawned a short-lived background process, which sometimes
+ prevented the test directory from getting removed at the end of the
+ script on some platforms.
+
+ * Update a few tests that used to use GIT_CURL_VERBOSE to use the
+ newer GIT_TRACE_CURL.
+
+ * "git pack-objects --include-tag" was taught that when we know that
+ we are sending an object C, we want a tag B that directly points at
+ C but also a tag A that points at the tag B. We used to miss the
+ intermediate tag B in some cases.
+ (merge b773dde jk/pack-tag-of-tag later to maint).
+
+ * Update Japanese translation for "git-gui".
+ (merge 02748bc sy/git-gui-i18n-ja later to maint).
+
+ * "git fetch http::/site/path" did not die correctly and segfaulted
+ instead.
+ (merge d63ed6e jk/fix-remote-curl-url-wo-proto later to maint).
+
+ * "git commit-tree" stopped reading commit.gpgsign configuration
+ variable that was meant for Porcelain "git commit" in Git 2.9; we
+ forgot to update "git gui" to look at the configuration to match
+ this change.
+ (merge f14a310 js/git-gui-commit-gpgsign later to maint).
+
+ * "git add --chmod=+x" added recently lacked documentation, which has
+ been corrected.
+ (merge 7ef7903 et/add-chmod-x later to maint).
+
+ * "git log --cherry-pick" used to include merge commits as candidates
+ to be matched up with other commits, resulting a lot of wasted time.
+ The patch-id generation logic has been updated to ignore merges to
+ avoid the wastage.
+ (merge 7c81040 jk/patch-ids-no-merges later to maint).
+
+ * The http transport (with curl-multi option, which is the default
+ these days) failed to remove curl-easy handle from a curlm session,
+ which led to unnecessary API failures.
+ (merge 2abc848 ew/http-do-not-forget-to-call-curl-multi-remove-handle later to maint).
+
+ * There were numerous corner cases in which the configuration files
+ are read and used or not read at all depending on the directory a
+ Git command was run, leading to inconsistent behaviour. The code
+ to set-up repository access at the beginning of a Git process has
+ been updated to fix them.
+ (merge 4d0efa1 jk/setup-sequence-update later to maint).
+
+ * "git diff -W" output needs to extend the context backward to
+ include the header line of the current function and also forward to
+ include the body of the entire current function up to the header
+ line of the next one. This process may have to merge to adjacent
+ hunks, but the code forgot to do so in some cases.
+ (merge 45d2f75 rs/xdiff-merge-overlapping-hunks-for-W-context later to maint).
+
+ * Performance tests done via "t/perf" did not use the same set of
+ build configuration if the user relied on autoconf generated
+ configuration.
+ (merge cd5c281 ks/perf-build-with-autoconf later to maint).
+
+ * "git format-patch --base=..." feature that was recently added
+ showed the base commit information after "-- " e-mail signature
+ line, which turned out to be inconvenient. The base information
+ has been moved above the signature line.
+ (merge 480871e jt/format-patch-base-info-above-sig later to maint).
+
+ * More i18n.
+ (merge 43073f8 va/i18n later to maint).
+
+ * Even when "git pull --rebase=preserve" (and the underlying "git
+ rebase --preserve") can complete without creating any new commit
+ (i.e. fast-forwards), it still insisted on having a usable ident
+ information (read: user.email is set correctly), which was less
+ than nice. As the underlying commands used inside "git rebase"
+ would fail with a more meaningful error message and advice text
+ when the bogus ident matters, this extra check was removed.
+ (merge 1e461c4 jk/rebase-i-drop-ident-check later to maint).
+
+ * "git gc --aggressive" used to limit the delta-chain length to 250,
+ which is way too deep for gaining additional space savings and is
+ detrimental for runtime performance. The limit has been reduced to
+ 50.
+ (merge 07e7dbf jk/reduce-gc-aggressive-depth later to maint).
+
+ * Other minor doc, test and build updates and code cleanups.
+ (merge e78d57e bw/pathspec-remove-unused-extern-decl later to maint).
+ (merge ce25e4c rs/checkout-some-states-are-const later to maint).
+ (merge a8342a4 rs/strbuf-remove-fix later to maint).
+ (merge b56aa5b rs/unpack-trees-reduce-file-scope-global later to maint).
+ (merge 5efc60c mr/vcs-svn-printf-ulong later to maint).