Eliminate unused blocks named nil, too, cl-macs.el, bytecomp.el 2011-03-17 Aidan Kehoe <kehoea@parhasard.net> * bytecomp.el (byte-compile-catch): * bytecomp.el (byte-compile-throw): * cl-macs.el (return-from): With `block' and `return-from', a nil NAME is perfectly legitimate, and the corresponding `catch' statements need be removed by the byte-compiler. 5dd1ba5e0113 , my change of 2011-02-12, didn't do this; correct that now.