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A general description is here.
Omitting ‘PACKAGE’ in ‘.C()’ etc calls was supposed to make use of the DLL from the namespace within which the enclosing function was defined. It was less successful in doing so than it might be, and gave no indication it had failed.
A new search strategy is very successful and gives a warning when it fails. In most cases this is because the entry point is not actually provided by that package (and so ‘PACKAGE’ should be used to indicate which package is intended) but in some the namespace does not have a DLL specified by a ‘useDynLib()’ directive so ‘PACKAGE’ is required.
‘qr()’ for a complex matrix did not pivot the column names.
‘--with='-framework vecLib'’ now also works on OS X 10.8.
Printing of vectors with names > 1000 characters now works correctly rather than truncating. (PR#15028)