Re: [comp.emacs.xemacs] Package incompatibility

SJT> been lobotomized. Again, IUTPC. mb> ^^^^ ^^^^^ what? ????? "If I Understand The Process Correctly." (I seem to have dropped an I there.) mb> You mean mb> (defmacro fast-marker-position (x) (+ x 0)) mb> as a speed hack? I had more in mind something like (defmacro total-line-width (this-start column-width) `(progn (do-side-effects ,this-start ,column-width) (+ ,this-start ,column-width))) which might get called as (total-line-width (current-column) 0) at the right margin, since there's no space to add another text column. AFAICT what the byte compiler sees after macro expansion is (progn (do-side-effects (current-column) 0) (+ this-start 0)) which gets optimized to (progn (do-side-effects (current-column) 0) this-start) SJT> I thought it was clear that that's what worried me all along. mb> I still think optimizing (+ x 0) to x was the Right Thing to mb> do. *shrug* Maybe this will not occasion a bug report for decades. But mathematical certainty is such a rare and wonderful thing, I thought I'd advocate it. -- University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Institute of Policy and Planning Sciences Tel/fax: +81 (298) 53-5091 _________________ _________________ _________________ _________________ What are those straight lines for? "XEmacs rules."