From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.bugs Subject: bug#18017: 24.4.50; Isearch case sensitivity broken/confusing Date: Mon, 14 Jul 2014 09:02:56 -0700 (PDT) Message-ID: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1405353876 18979 80.91.229.3 (14 Jul 2014 16:04:36 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 14 Jul 2014 16:04:36 +0000 (UTC) To: 18017@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jul 14 18:04:29 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X6ijs-0000cd-Nj for geb-bug-gnu-emacs@m.gmane.org; Mon, 14 Jul 2014 18:04:28 +0200 Original-Received: from localhost ([::1]:58748 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6ijs-0004bZ-91 for geb-bug-gnu-emacs@m.gmane.org; Mon, 14 Jul 2014 12:04:28 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39477) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6ijd-0004NX-Ai for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:04:23 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6ijT-0002FX-0Y for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:04:13 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59576) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6ijS-0002FQ-S7 for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:04:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1X6ijS-0000BQ-CK for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:04:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Drew Adams Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 14 Jul 2014 16:04:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 18017 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.1405353826668 (code B ref -1); Mon, 14 Jul 2014 16:04:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 14 Jul 2014 16:03:46 +0000 Original-Received: from localhost ([127.0.0.1]:54841 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1X6ij7-0000Ac-Kj for submit@debbugs.gnu.org; Mon, 14 Jul 2014 12:03:45 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:37378) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1X6ij1-0000AJ-NW for submit@debbugs.gnu.org; Mon, 14 Jul 2014 12:03:39 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6iim-00021j-5H for submit@debbugs.gnu.org; Mon, 14 Jul 2014 12:03:30 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:43257) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6iim-00021e-2P for submit@debbugs.gnu.org; Mon, 14 Jul 2014 12:03:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:38907) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6iic-0002kS-OU for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:03:19 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6iiS-0001sI-9u for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:03:10 -0400 Original-Received: from userp1040.oracle.com ([156.151.31.81]:28449) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6iiS-0001s4-4E for bug-gnu-emacs@gnu.org; Mon, 14 Jul 2014 12:03:00 -0400 Original-Received: from ucsinet21.oracle.com (ucsinet21.oracle.com [156.151.31.93]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id s6EG2vjF015121 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 14 Jul 2014 16:02:58 GMT Original-Received: from userz7021.oracle.com (userz7021.oracle.com [156.151.31.85]) by ucsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id s6EG2vsV023517 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Mon, 14 Jul 2014 16:02:57 GMT Original-Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userz7021.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id s6EG2vsa023499 for ; Mon, 14 Jul 2014 16:02:57 GMT X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.8 (707110) [OL 12.0.6691.5000 (x86)] X-Source-IP: ucsinet21.oracle.com [156.151.31.93] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:91543 Archived-At: emacs -Q Type this in buffer *scratch*: Add add ADD M-x set-variable case-fold-search nil C-s add C-s C-s M-c C-s The M-c says that search is now case-insensitive, but the second and subsequent C-s's do not find occurrences Add and ADD. C-s add C-s That finds all three (case-insensitive). IOW, what seems to happen is this: When you repeat the last search string, that text is not interpreted anew, per the current value of `case-fold-search'. Instead, search is put back into the state it was in for the last search you did (from scratch), ignoring the current value of `case-fold-search'.= =20 If instead of C-s C-s you retype (or yank) the same text then it is handled as you would expect (i.e., per `case-fold-search'). Similarly, if you used `M-c' during the previous search to turn off case sensitivity, then when you start a new search by repeating the search string, that new search acts case-insensitively, regardless of the value of `case-fold-search'. Again, search seems to be put back into the state it had for the previous search session, ignoring `case-fold-search'. Similarly, if you do C-s M-c C-s then the M-c is ignored and search takes on the case sensitivity or lack thereof that you had for the previous search. Search ignores M-c if you repeat the previous search string using C-s. Is this considered a feature? Or should it be considered a bug? It seems quit confusing, at least. Is there some advantage to having Isearch behave this way? Note that the doc (emacs, node Search Case) says: The effect [of M-c] does not extend beyond the current incremental search to the next one which contradicts this behavior (starting with nil `case-fold-search'): C-s add M-c C-s C-s C-s The M-c of the first search does affect the case-sensitivity of the second search, because of the phenomenon described above: C-s C-s restores not only the search string from the previous search but also the case-sensitivity of the search state. In GNU Emacs 24.4.50.1 (i686-pc-mingw32) of 2014-06-28 on ODIEONE Bzr revision: 117431 rgm@gnu.org-20140628015517-eku6hj8mpgcvfnso Windowing system distributor `Microsoft Corp.', version 6.1.7601 Configured using: `configure --prefix=3D/c/Devel/emacs/snapshot/trunk --enable-checking=3Dyes,glyphs 'CFLAGS=3D-O0 -g3' LDFLAGS=3D-Lc:/Devel/emacs/lib 'CPPFLAGS=3D-DGC_MCHECK=3D1 -Ic:/Devel/emacs/include''