From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: Re: recording-elisp.el - try recording commands as elisp code Date: Tue, 06 Nov 2007 02:45:47 +0200 Organization: JURTA Message-ID: <87ve8g5kws.fsf@jurta.org> References: <87k5p05qsy.fsf@jurta.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1194310322 5127 80.91.229.12 (6 Nov 2007 00:52:02 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 6 Nov 2007 00:52:02 +0000 (UTC) Cc: emacs-devel@gnu.org To: yzhh Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Nov 06 01:52:04 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1IpCfg-00023W-Mg for ged-emacs-devel@m.gmane.org; Tue, 06 Nov 2007 01:52:00 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IpCfV-0007jx-WA for ged-emacs-devel@m.gmane.org; Mon, 05 Nov 2007 19:51:50 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IpCf1-0007Xh-3Q for emacs-devel@gnu.org; Mon, 05 Nov 2007 19:51:19 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IpCez-0007X6-VI for emacs-devel@gnu.org; Mon, 05 Nov 2007 19:51:18 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IpCez-0007X1-OI for emacs-devel@gnu.org; Mon, 05 Nov 2007 19:51:17 -0500 Original-Received: from mailman.kiev.sovam.com ([89.162.150.100]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1IpCez-0000ig-FL for emacs-devel@gnu.org; Mon, 05 Nov 2007 19:51:17 -0500 Original-Received: from relay01.kiev.sovam.com ([62.64.120.200]) by mailman.kiev.sovam.com with esmtp (Exim 4.63 (FreeBSD)) (envelope-from ) id 1IpCf4-000Prf-1A; Tue, 06 Nov 2007 00:51:22 +0000 Original-Received: from [83.170.232.243] (helo=smtp.svitonline.com) by relay01.kiev.sovam.com with esmtp (Exim 4.67) (envelope-from ) id 1IpCec-0000dn-JV; Tue, 06 Nov 2007 02:50:56 +0200 In-Reply-To: (yzhh's message of "Sun, 04 Nov 2007 16:51:49 +0800") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.50 (gnu/linux) X-Scanner-Signature: 7b1a4900bea4ee3727a65c989d5962bc X-DrWeb-checked: yes X-SpamTest-Envelope-From: juri@jurta.org X-SpamTest-Group-ID: 00000000 X-SpamTest-Header: Not Detected X-SpamTest-Info: Profiles 1737 [Nov 05 2007] X-SpamTest-Info: helo_type=3 X-SpamTest-Info: {HEADERS: header Content-Type found without required header Content-Transfer-Encoding} X-SpamTest-Method: none X-SpamTest-Rate: 25 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0255], KAS30/Release X-detected-kernel: by monty-python.gnu.org: FreeBSD 6.x (1) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:82605 Archived-At: > Juri's approach get: (search-forward "abcdef") > My implementation get: (search-forward "abc") (search-forward "abcdef" > (search-forward "abcdef") > rms's approach want: (isearch-forward) (isearch-append-string "abc") > (isearch-yank-kill) (isearch-repeat-forward) (isearch-exit) > > What do we really want here? Another case that might help us to decide to what level to record Lisp code is converting M-% (`query-replace'). There are three basic levels of "interactivity": 1. convert it to the call to `query-replace', e.g. (query-replace "from" "to" nil (if (and transient-mark-mode mark-active) (region-beginning)) (if (and transient-mark-mode mark-active) (region-end))) That's how it is recorded now to `command-history'. 2. convert M-% to the call to `replace-string'; 3. but the doc-string of this command says: This function is usually the wrong thing to use in a Lisp program. What you probably want is a loop like this: (while (search-forward FROM-STRING nil t) (replace-match TO-STRING nil t)) which will run faster and will not set the mark or print anything. So according to this guideline a Lisp program should use a loop with search-forward and replace-match. -- Juri Linkov http://www.jurta.org/emacs/