From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Kenichi Handa Newsgroups: gmane.emacs.devel Subject: Re: regex and case-fold-search problem Date: Sat, 24 Aug 2002 09:51:46 +0900 (JST) Sender: emacs-devel-admin@gnu.org Message-ID: <200208240051.JAA24648@etlken.m17n.org> References: <200208230625.PAA23426@etlken.m17n.org> <9003-Fri23Aug2002185625+0300-eliz@is.elta.co.il> NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 (generated by SEMI 1.14.3 - "Ushinoya") Content-Type: text/plain; charset=US-ASCII X-Trace: main.gmane.org 1030150304 32181 127.0.0.1 (24 Aug 2002 00:51:44 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Sat, 24 Aug 2002 00:51:44 +0000 (UTC) Cc: emacs-devel@gnu.org Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 17iP9T-0008Mw-00 for ; Sat, 24 Aug 2002 02:51:43 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian)) id 17iPd4-0002Qu-00 for ; Sat, 24 Aug 2002 03:22:19 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10) id 17iPAh-0003oJ-00; Fri, 23 Aug 2002 20:52:59 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.10) id 17iP9f-0003ki-00 for emacs-devel@gnu.org; Fri, 23 Aug 2002 20:51:55 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.10) id 17iP9d-0003kW-00 for emacs-devel@gnu.org; Fri, 23 Aug 2002 20:51:54 -0400 Original-Received: from tsukuba.m17n.org ([192.47.44.130]) by monty-python.gnu.org with esmtp (Exim 4.10) id 17iP9c-0003kR-00 for emacs-devel@gnu.org; Fri, 23 Aug 2002 20:51:52 -0400 Original-Received: from fs.m17n.org (fs.m17n.org [192.47.44.2]) by tsukuba.m17n.org (8.11.6/3.7W-20010518204228) with ESMTP id g7O0pll17111; Sat, 24 Aug 2002 09:51:47 +0900 (JST) (envelope-from handa@m17n.org) Original-Received: from etlken.m17n.org (etlken.m17n.org [192.47.44.125]) by fs.m17n.org (8.11.3/3.7W-20010823150639) with ESMTP id g7O0pk908448; Sat, 24 Aug 2002 09:51:46 +0900 (JST) Original-Received: (from handa@localhost) by etlken.m17n.org (8.8.8+Sun/3.7W-2001040620) id JAA24648; Sat, 24 Aug 2002 09:51:46 +0900 (JST) Original-To: eliz@is.elta.co.il In-Reply-To: <9003-Fri23Aug2002185625+0300-eliz@is.elta.co.il> User-Agent: SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/21.1.30 (sparc-sun-solaris2.6) MULE/5.0 (SAKAKI) Errors-To: emacs-devel-admin@gnu.org X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.0.11 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: Emacs development discussions. List-Unsubscribe: , List-Archive: Xref: main.gmane.org gmane.emacs.devel:6819 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:6819 In article <9003-Fri23Aug2002185625+0300-eliz@is.elta.co.il>, "Eli Zaretskii" writes: >> (let ((case-fold-search nil)) >> (string-match "[A-_]" "A")) => 0 >> (let ((case-fold-search t)) >> (string-match "[A-_]" "A")) => nil >> (let ((case-fold-search t)) >> (string-match "[A_]" "A")) => 0 > Does that happen because under case-fold-search non-nil the > characters on the range specification are downcased? Yes. >> In my opinion, specifying ranges by chars are nonsense >> because there should be no semantics in the order of >> characters codes. > Sorry, I don't understand: how would one specify a range _except_ > with two characters and a dash between them? What am I missing? I mean that the concept of character range itself is not good. A character code is just an identifier of a character. We usually don't think about "a range of identifiers" (e.g. "symbols in the range between t and nil" is nonsense). --- Ken'ichi HANDA handa@etl.go.jp