* "git repack" machinery learns to pay attention to the "--filter="
option.
+ * Test coverage for trailers has been improved.
+
Performance, Internal Implementation, Development Support etc.
Unicode 15.1
(merge 872976c37e bb/unicode-width-table-15 later to maint).
+ * Update mailmap entry for Derrick.
+ (merge 6e5457d8c7 ds/mailmap-entry-update later to maint).
+
+ * In .gitmodules files, submodules are keyed by their names, and the
+ path to the submodule whose name is $name is specified by the
+ submodule.$name.path variable. There were a few codepaths that
+ mixed the name and path up when consulting the submodule database,
+ which have been corrected. It took long for these bugs to be found
+ as the name of a submodule initially is the same as its path, and
+ the problem does not surface until it is moved to a different path,
+ which apparently happens very rarely.
+
+ * "git diff --merge-base X other args..." insisted that X must be a
+ commit and errored out when given an annotated tag that peels to a
+ commit, but we only need it to be a committish. This has been
+ corrected.
+ (merge 4adceb5a29 ar/diff-index-merge-base-fix later to maint).
+
* Other code cleanup, docfix, build fix, etc.
(merge fd3ba590d8 ws/git-push-doc-grammofix later to maint).
(merge 5f33a843de ds/upload-pack-error-sequence-fix later to maint).
(merge 43abaaf008 ob/am-msgfix later to maint).
(merge c2c349a15c xz/commit-title-soft-limit-doc later to maint).
(merge f4cbb32c27 rs/parse-opt-ctx-cleanup later to maint).
+ (merge badf2fe1c3 jk/decoration-and-other-leak-fixes later to maint).