#'cl-defsubst-expand; avoid mutually-recursive symbol macros. lisp/ChangeLog addition: 2011-09-10 Aidan Kehoe <kehoea@parhasard.net> * cl-macs.el (cl-defsubst-expand): Change set 2a6a8da4dd7c of http://mid.gmane.org/19966.17522.332164.615228@parhasard.net wasn't sufficiently comprehensive, symbol macros can be mutually rather than simply recursive, and they can equally hang. Thanks for the bug report, Michael Sperber, and for the test case, Stephen Turnbull.