Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!samsung!uunet!mcsun!sunic!sics.se!sics.se!matsc From: matsc@sics.se (Mats Carlsson) Newsgroups: comp.lang.prolog Subject: Re: Prefix operators and blanks (was: WG17) Message-ID: Date: 8 Dec 89 07:52:40 GMT References: <24703@cup.portal.com> Sender: news@sics.se Organization: Swedish Institute of Computer Science, Kista Lines: 14 In-Reply-To: matsc@sics.se's message of 6 Dec 89 09:50:53 In article matsc@sics.se (Mats Carlsson) writes: Another way of avoiding the ambiguity with `not(a,b)', `not (a,b)', ... (assuming spaces before the `(' are no longer significant) would be to simply disallow the use of `,' as an infix operator. I would like to retract this comment. As John Dowding at UNISYS has pointed out, it would either require a difference between the syntax of clauses and the syntax or terms, or make clauses look extremely awkward. -- Mats Carlsson SICS, PO Box 1263, S-164 28 KISTA, Sweden Internet: matsc@sics.se Tel: +46 8 7521543 Ttx: 812 61 54 SICS S Fax: +46 8 7517230