From J.Reid@letterbox.rl.ac.uk Tue Aug 1 17:08:02 1995 Received: from letterbox.rl.ac.uk by dkuug.dk with SMTP id AA09210 (5.65c8/IDA-1.4.4j for ); Tue, 1 Aug 1995 17:08:02 +0200 Received: from jkr.cc.rl.ac.uk by letterbox.rl.ac.uk with SMTP (PP) id ; Tue, 1 Aug 1995 16:04:54 +0100 Received: by jkr.cc.rl.ac.uk (4.1/SMI-4.1) id AA16745; Tue, 1 Aug 95 16:07:28 BST Date: Tue, 1 Aug 95 16:07:28 BST From: jkr@letterbox.rl.ac.uk (John Reid) Message-Id: <9508011507.AA16745@jkr.cc.rl.ac.uk> To: SC22WG5@dkuug.dk Subject: Exceptions technical report X-Charset: ASCII X-Char-Esc: 29 I have agreed to take over from Wolfgang as editor of the exceptions TR development body. My belief it is is essential to have at least an outline "full" proposal if any subset is to be acceptable to wg5. Without it, how can we be sure that we do not have an inconsistency? I met Richard Hanson and Wolfgang Walter at a meeting in Hamburg. Richard made a key suggestion: to make conditions a derived type in an intrinsic module. It avoids having to mess around with new rules for a new intrinsic type. In fact, it actually simplifies the Edinburgh proposal while adding user-defined conditions, which wg5 very much wanted. With some help from Jerry, Richard Hanson, and Lawrie, I have prepared a draft full proposal. It is based on the Edinburgh proposal with the revisions that I prepared ahead of the Boston meeting (so it meets many of the ballot comments). Based on this, I have made a first stab at the TR itself. I have retained user conditions because they add very little extra complication and avoid the need for very artificial uses of the intrinsic conditions. It was pretty sordid in the Edinburgh proposal and it would be even worse with only 5 intrinsic conditions. Now is the time to start operating as a development body. Would you like to join it? It was envisaged that it would be small and active. My feeling is that individuals may wish to move in and out of being active. I am perfectly happy to have people in the body those who expect only to keep a watch on developments. I envisage quite a large body, with perhaps 20 members, of which about five are active at any one time. Please let me know if you would like to join. Best wishes, JOhn.