From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: indentation via text or overlay property? Date: Fri, 06 Jun 2003 10:23:46 -0600 Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Message-ID: <3EE0C012.60705@yahoo.com> References: <3EDE44C1.9040500@yahoo.com> <5lof1dh7bc.fsf@rum.cs.yale.edu> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: main.gmane.org 1054916766 31745 80.91.224.249 (6 Jun 2003 16:26:06 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Fri, 6 Jun 2003 16:26:06 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Fri Jun 06 18:26:04 2003 Return-path: Original-Received: from monty-python.gnu.org ([199.232.76.173]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 19OK2W-0008Ft-00 for ; Fri, 06 Jun 2003 18:26:04 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.20) id 19OK2e-0006MF-KP for gnu-help-gnu-emacs@m.gmane.org; Fri, 06 Jun 2003 12:26:12 -0400 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!headwall.stanford.edu!fu-berlin.de!uni-berlin.de!170.207.51.80!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 36 Original-NNTP-Posting-Host: 170.207.51.80 Original-X-Trace: fu-berlin.de 1054916615 13146539 170.207.51.80 (16 [82742]) User-Agent: Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:0.9.4.1) Gecko/20020406 Netscape6/6.2.2 X-Accept-Language: en-us Original-Xref: shelby.stanford.edu gnu.emacs.help:114226 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.help:10720 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:10720 Stefan Monnier wrote: >>>>>>"Kevin" == Kevin Rodgers writes: >>>>>> >>Is there a way to implement indentation via a text property like left-margin >>or an overlay property like before-string? > > (put-text-property start end 'display '(space :align-to N)) > > will make the text between `start' and `end' appear like a space > that ends at column N. Cool! But since those spaces are displayed instead of the original text (not in addition to it), I don't see how to use that to implement indentation. For example, let's say I have a tag at the beginning of a line that I want displayed at column 6. If I specify '(space :align-to 5) for the display property at the position of "<" in the buffer, it gets indented like I want except that the "<" is no longer visible. And apparently I can't use a value like (list '(space :align-to N) (buffer-substring start end)) to get both the spaces and the original text displayed. > This is at least documented in the NEWS file of Emacs-21.1, and > I'd expect there to be something about it as well in the elisp manual. Thanks for the pointers. Is the correct way to test for this feature: (>= emacs-major-version 21) -- Kevin Rodgers