* "git cat-file --batch" and friends learned to allow "--filter=" to
omit certain objects, just like the transport layer does.
+ * "git blame --porcelain" mode now talks about unblamable lines and
+ lines that are blamed to an ignored commit.
+
Performance, Internal Implementation, Development Support etc.
--------------------------------------------------------------
have been rewritten help environment with NO_PERL test the build as
much as possible.
+ * Remove remnants of the recursive merge strategy backend, which was
+ superseded by the ort merge strategy.
+
Fixes since v2.49
-----------------
* Random build fixes.
(merge 85e1d6819f ps/misc-build-fixes later to maint).
+ * "git fetch [<remote>]" with only the configured fetch refspec
+ should be the only thing to update refs/remotes/<remote>/HEAD,
+ but the code was overly eager to do so in other cases.
+
+ * Incorrect sorting of refs with bytes with high-bit set on platforms
+ with signed char led to a BUG, which has been corrected.
+
* Other code cleanup, docfix, build fix, etc.
(merge 227c4f33a0 ja/doc-block-delimiter-markup-fix later to maint).
(merge 2bfd3b3685 ab/decorate-code-cleanup later to maint).
(merge ee8edb7156 dk/vimdiff-doc-fix later to maint).
(merge 107d889303 md/t1403-path-is-file later to maint).
(merge abd4192b07 js/comma-semicolon-confusion later to maint).
+ (merge 27b7264206 ab/environment-clean-header later to maint).