From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Raffaele Ricciardi <rfflrccrd@gmail.com>
Newsgroups: gmane.emacs.help
Subject: Re: How to add syntax-highlighting to a Help buffer?
Date: Sat, 4 Jul 2015 19:29:53 +0200
Message-ID: <cvqjghFog72U1@mid.individual.net>
References: <cvmtmrFqcegU1@mid.individual.net> <87si94x1vk.fsf@web.de>
	<878uaw3qpc.fsf@nl106-137-147.student.uu.se>
	<mailman.6316.1436023528.904.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: plane.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: ger.gmane.org 1436031036 28374 80.91.229.3 (4 Jul 2015 17:30:36 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Sat, 4 Jul 2015 17:30:36 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Jul 04 19:30:19 2015
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
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 <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1ZBRGc-0006er-P7
	for geh-help-gnu-emacs@m.gmane.org; Sat, 04 Jul 2015 19:30:18 +0200
Original-Received: from localhost ([::1]:44931 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1ZBRGc-0004R5-0b
	for geh-help-gnu-emacs@m.gmane.org; Sat, 04 Jul 2015 13:30:18 -0400
Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 25
Original-X-Trace: individual.net usC7uLea0dZ7/J3553NcIAVzvskTnM3sVwFSpEgWGKHj2PiUtM
Cancel-Lock: sha1:pSLs81UPlBssy3yKu5ZZxfwHcP0=
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101
	Thunderbird/38.0.1
In-Reply-To: <mailman.6316.1436023528.904.help-gnu-emacs@gnu.org>
Original-Xref: usenet.stanford.edu gnu.emacs.help:213144
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:105431
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/105431>

On 04/07/15 17:25, Michael Heerdegen wrote:
 > `font-lock-mode' is not so useful for the fontification of Help buffers,
 > so it makes sense not to use it.  For highlighting regexps, as in your
 > examples, hi-lock is just fine.  *Help* is mostly text, not code.

I thought that Help buffers relied on Font Lock Mode because -- in a
Help buffer -- `C-h v font-lock-mode RET' replied:

     Its value is t
     Local in buffer *Help*; global value is nil

     Non-nil if Font-Lock mode is enabled.

Had the value of `font-lock-mode' been `nil', I would have thought
otherwise.

> OTOH the code could be easily rewritten to use font-lock-mode and
> propertize via the font-lock-face text property.

Now that I have understood how things work, I doubt that it would be
beneficial to use Font Lock Mode in Help buffers, because the text could
be mixed (for example: Emacs Lisp code and regular text).  Therefore, it
makes sense to highlight each portion of text in an specific way, as
Emacs does now.