From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Display of undisplayable characters: \U01F3A8 instead of diamond Date: Sat, 10 Sep 2022 09:33:29 +0300 Message-ID: <83bkrnbux2.fsf@gnu.org> References: <83mtbhneht.fsf@gnu.org> <83czcakqd3.fsf@gnu.org> <87a67dxhfw.fsf@dataswamp.org> <875yi0wzx7.fsf@dataswamp.org> <834jxkk635.fsf@gnu.org> <878rmw8085.fsf@dataswamp.org> <83edwnj4fh.fsf@gnu.org> <87tu5j7tu1.fsf@dataswamp.org> <83a67bih0f.fsf@gnu.org> <83tu5jgvfy.fsf@gnu.org> <83sfl3gtah.fsf@gnu.org> <83fsh3ghn9.fsf@gnu.org> <87bkroub0v.fsf@dataswamp.org> <83r10kdd68.fsf@gnu.org> <87a6777seb.fsf@dataswamp.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3623"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Emanuel Berg Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Sep 10 08:35:08 2022 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 1oWu56-0000mW-3s for ged-emacs-devel@m.gmane-mx.org; Sat, 10 Sep 2022 08:35:08 +0200 Original-Received: from localhost ([::1]:38080 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oWu54-0005wQ-Bx for ged-emacs-devel@m.gmane-mx.org; Sat, 10 Sep 2022 02:35:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38982) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWu3w-0005CD-AF for emacs-devel@gnu.org; Sat, 10 Sep 2022 02:33:56 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:37756) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWu3t-000615-Pa; Sat, 10 Sep 2022 02:33:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=SDHKQv/xvw2DSTfWumCQtZn+H7raSEyaPkmbn/6xwmI=; b=CwlkzfGuyFzH LO6gRSeFGRxYXrN3eBEfC0QkCibmSldkIST0e4m6Fi8+6k8Tl4cQZPmJwbigRgivVwyX2fwqyHIZC 8mw8+Xg8s6Z7EPbiqL4+q/jGF2+88fbrtIri+YvMH4wE1/gssG1WHkVCMkggz9ej44ogbKjalwu41 lWSa7vXkS+C1mstWcWEfUlVkb+bTDre45e6u1GE+rso+ZLoUleMar0Wdad5yEuAcp5jaaBh+WdBJF sOYT00xhF7PU5ECz1DYg0eQYrBXJXXTQZ37R4URS9mWOAWhNBIPogipJTF5fj5LymIe3cZmN87zDx hj0ftaldxAzOs8L6okzyNw==; Original-Received: from [87.69.77.57] (port=3601 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oWu3p-0001HG-Df; Sat, 10 Sep 2022 02:33:51 -0400 In-Reply-To: <87a6777seb.fsf@dataswamp.org> (message from Emanuel Berg on Sat, 10 Sep 2022 06:41:32 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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:295104 Archived-At: > From: Emanuel Berg > Date: Sat, 10 Sep 2022 06:41:32 +0200 > > Eli Zaretskii wrote: > > >> Situation: You want to do this, f(x) = y. > >> > >> Problem: f(x) is expensive to compute. > >> > >> Solution: Compute it ONCE, then store f = ((x y) ...) in > >> a cache data file, so next time f(x) = y is needed, instead of > >> computing f(x) again search the data file - search, which > >> _isn't_ expensive. > > > > And I ask again: why does it matter whether you record > > a program or its data > > If you store the result of running the program you don't need > to execute the program again next time you need the result, > instead you search for it and retrieve it, simple as that. That's what the current implementation does. It just stores the results as a (much faster) program to be run at Emacs startup time, that's all. AFAIU, your proposal is to store just the ranges of problematic characters, which would require to run, at Emacs startup time, another program to read those ranges and issue the calls that the current implementation embeds in the stored results. Which is why I think there's no real difference between the two approaches, and I consider the current implementation be slightly better, since the risk of getting the startup calls wrong is somewhat lower.