From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Cecil Westerhof Newsgroups: gmane.emacs.help Subject: Re: How to get the ~ functionality of vi Date: Fri, 27 May 2016 10:54:17 +0200 Organization: Decebal Computing Message-ID: <87eg8n51ae.fsf@Equus.decebal.nl> References: <87shx44fbk.fsf@Equus.decebal.nl> <86h9dkfghn.fsf@student.uu.se> <87pos8p1js.fsf@elfie.nowhere.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1464883839 23224 80.91.229.3 (2 Jun 2016 16:10:39 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 2 Jun 2016 16:10:39 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jun 02 18:10:28 2016 Return-path: Envelope-to: geh-help-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 1b8VCW-0008Qy-4c for geh-help-gnu-emacs@m.gmane.org; Thu, 02 Jun 2016 18:10:28 +0200 Original-Received: from localhost ([::1]:48260 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8VCV-0004xM-7q for geh-help-gnu-emacs@m.gmane.org; Thu, 02 Jun 2016 12:10:27 -0400 Original-Path: usenet.stanford.edu!news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.xs4all.nl!newsfeed8.news.xs4all.nl!feeder1.xsusenet.com!feeder2.usenet.farm!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 61 Injection-Info: mx02.eternal-september.org; posting-host="12baf5125b19322b899c79c2e3878015"; logging-data="28002"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18EN9yR3XW80zqm8URnw89C7Oy/FV/CpZk=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Cancel-Lock: sha1:BKzR1ThlqcU837LhPvGlbI4jXwA= sha1:cCV5Y4Wf8rQc1CHip9IjAXnPijg= X-Homepage: http://www.decebal.nl/ Original-Xref: usenet.stanford.edu gnu.emacs.help:217897 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:110244 Archived-At: On Friday 27 May 2016 06:28 CEST, Jean-Jacques Rétorré wrote: > ven. 27 mai 2016, Emanuel Berg disait : > >> Cecil Westerhof writes: >> >>> In vi you can use ~ to flip the case of >>> a character. Does Emacs has something >>> like that? >> >> Try this: >> >> (defun flip-case () >> (interactive) >> (let ((c (string-to-char (thing-at-point 'char t)))) >> (delete-char 1) >> (cond ((and (>= c ?A) (<= c ?Z)) (insert-char (downcase c))) >> ((and (>= c ?a) (<= c ?z)) (insert-char (upcase c))) >> (t (insert-char c)))) ) >> (global-set-key "\C-cf" #'flip-case) > > That won't work for accented chars. > Probably this should : > > (defun flip-case () > (interactive) > (let ((c (string-to-char (thing-at-point 'char t)))) > (delete-char 1) > (insert-char > (if (eq c (upcase c)) > (downcase c) > (upcase c))) ) ) I expected that there was a function I overlooked, but I did not. Luckily it is easy to add the missing functionality in Emacs. :-D The thing-at-point did not work for me. I rewrote it to: (defun flip-case () (interactive) (let ((c (char-after))) (when c (delete-char 1) (insert-char (if (eq c (upcase c)) (downcase c) (upcase c)))))) I also added a check for there being a current character. For the keyboard shortcut I use: (global-set-key (kbd "C-~") 'flip-case) I like to flip a lot of characters in one swell swoop. Thanks for putting me in the right direction. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof