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New experimental function ‘R_GetBindingType’ to support inspecting environments without forcing delayed or active bindings. New functions ‘R_MakeDelayedBinding’, ‘R_MakeForcedBinding’ and ‘R_MakeMissingBinding’ (PR#18928).
‘Ops’ group (Arith, Compare,..) methods for matrix-‘"ts"’ now do return (zero length) matrices even when the two series do not overlap, a very partial fix of PR#18972 which is to be fully addressed later.
Further non-API entry points have been added to those reported by ‘R CMD check’: ‘COMPLEX0’, ‘ddfind’, ‘DDVAL’, ‘ENSURE_NAMEDMAX’, ‘ENVFLAGS’, ‘FRAME’, ‘HASHTAB’, ‘INTERNAL’, ‘IS_ASCII’, ‘IS_UTF8’, ‘LEVELS’, ‘NAMED’, ‘PRSEEN’, ‘RDEBUG’, ‘REAL0’, ‘Rf_findVarInFrame3’, ‘SET_BODY’, ‘SET_CLOENV’, ‘SET_FORMALS’, ‘SET_PRSEEN’, ‘SET_RDEBUG’, ‘STRING_PTR’, ‘SYMVALUE’, and ‘VECTOR_PTR’. Any declarations for these in public header files will be removed in the near future, and they will be hidden where possible.