From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "Alfred M. Szmidt" Newsgroups: gmane.emacs.devel Subject: Re: new coding system (was: Re: prettify symbols question) Date: Sat, 14 Nov 2020 10:29:15 -0500 Message-ID: References: <834kluzkma.fsf@gnu.org> <831rgyziu3.fsf@gnu.org> <83zh3my2ls.fsf@gnu.org> <83o8k1yb0x.fsf@gnu.org> <83y2j5wio8.fsf@gnu.org> <83sg9dweps.fsf@gnu.org> <83k0upwber.fsf@gnu.org> <83r1owuicp.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13670"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Nov 14 16:30:34 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kdxVZ-0003RA-7i for ged-emacs-devel@m.gmane-mx.org; Sat, 14 Nov 2020 16:30:33 +0100 Original-Received: from localhost ([::1]:54528 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kdxVY-00049T-4S for ged-emacs-devel@m.gmane-mx.org; Sat, 14 Nov 2020 10:30:32 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55878) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kdxUL-0003fy-Fx for emacs-devel@gnu.org; Sat, 14 Nov 2020 10:29:17 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:56190) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kdxUL-0003Yn-7F for emacs-devel@gnu.org; Sat, 14 Nov 2020 10:29:17 -0500 Original-Received: from ams by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1kdxUJ-0000NX-Bf; Sat, 14 Nov 2020 10:29:15 -0500 In-Reply-To: <83r1owuicp.fsf@gnu.org> (message from Eli Zaretskii on Sat, 14 Nov 2020 16:24:22 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:259169 Archived-At: > From: "Alfred M. Szmidt" > Cc: emacs-devel@gnu.org > Date: Fri, 13 Nov 2020 12:11:18 -0500 > > These default coding systems were tried to encode text > in the buffer `lispm-char-test.text': > (lispm-unix (1 . 0) (59 . 1) (117 . 2) (175 . 3) (233 . 4) (291 . 5) > (349 . 6) (407 . 7) (465 . 4194184) (523 . 4194185) (581 . 4194186)) > However, each of them encountered characters it couldn't encode: > lispm-unix cannot encode these: ^@ ^A ^B ^C ^D ^E ^F ^G \210 \211 ... > > (where ^@ etc are #o0, #o1, etc and #o210 ...) Is this the encoding on Unix systems? If so, maybe try without mapping characters below ASCII 128, I'm not sure this is supported in an ASCII-compatible encoding. I am not sure I understand. On unix #o0 maps to the MIDDLE DOT, #o1 to DOWNWARDS ARROW, etc. The Lisp Machine character set isn't compatible with ASCII -- the control characters have a entierly diffierent function. As I understood it, the charmap/charset is a mapping from UCS-4 Unicode to whatever is on the target?