object in the config subsystem has been rewritten to pass a
repository object through the callchain.
- * Drop unused parameters from functions.
+ * Unused parameters have been either marked as UNUSED to squelch
+ -Wunused warnings or dropped from many functions..
- * Mark unused parameters as UNUSED to squelch -Wunused warnings.
+ * The code in the reftable library has been cleaned up by discarding
+ unused "generic" interface.
+
+ * The underlying machinery for "git diff-index" has long been made to
+ expand the sparse index as needed, but the command fully expanded
+ the sparse index upfront, which now has been taught not to do.
Fixes since v2.46