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From: Daniel Brockman <daniel@brockman.se>
To: emacs-devel@gnu.org
Subject: Re: Invisibility bug: `invisible' vs `display'
Date: Fri, 23 Feb 2007 14:23:34 +0100	[thread overview]
Message-ID: <87y7mp6m95.fsf@wigwam.brockman.se> (raw)
In-Reply-To: 85irdtdfnp.fsf@lola.goethe.zz

David Kastrup <dak@gnu.org> writes:

> Daniel Brockman <daniel@brockman.se> writes:
>
>> David Kastrup <dak@gnu.org> writes:
>>
>>> They apply to the region between its buffer positions.  Which is
>>> usually pretty similar to "characters under the overlay".  But
>>> zero-length overlays exist and work, too, and when copying text
>>> from a buffer, overlay properties are not copied as part of the
>>> text.
>>
>> I can't get zero-length overlays to display anything using
>> the `display' property.  Here's what I'm doing:
>>
>>    (overlay-put (make-overlay (point) (point)) 'display "foo")
>
> Hm.  Weird.  It works using before-string and after-string, though.
> Looking at preview-latex, it actually moves stuff from 'display to
> 'before-string in the zero-length case.

Okay.  However --- and I guess for the record, --- I can't
see that the display patch affects this in any way.

   (progn
     (insert "foo")
     (overlay-put (make-overlay (point) (point)) 'after-string "bar")
     (insert (propertize "baz" 'invisible t))

The above displays the same with and without the patch.
Likewise for `before-string'.

> This can probably can well be considered a bug, but it is a bug that
> has been around for eternities, so we are not going to win much
> applause trying to fix it before the release.
>
> Afterwards, however, should be a good time to tackle this
> inconsistency along with the others.

I agree that it could be considered a bug.

-- 
Daniel Brockman <daniel@brockman.se>

  reply	other threads:[~2007-02-23 13:23 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-12 19:00 Invisibility bug: `invisible' vs `display' Daniel Brockman
2007-02-12 20:39 ` Daniel Brockman
2007-02-12 23:46 ` Chong Yidong
2007-02-13  1:09   ` Daniel Brockman
2007-02-13  7:13     ` David Kastrup
2007-02-13 14:59       ` Daniel Brockman
2007-02-22  2:57         ` Daniel Brockman
2007-02-22 11:27           ` Kim F. Storm
2007-02-22 11:42             ` David Kastrup
2007-02-22 13:22               ` Daniel Brockman
2007-02-22 13:38                 ` David Kastrup
2007-02-22 14:15                   ` Daniel Brockman
2007-02-22 17:19                     ` Johan Bockgård
2007-02-22 17:37                     ` David Kastrup
2007-02-22 20:39                       ` Daniel Brockman
2007-02-22 21:00                         ` David Kastrup
2007-02-22 21:23                           ` Daniel Brockman
2007-02-22 21:51                             ` David Kastrup
2007-02-23 13:23                               ` Daniel Brockman [this message]
2007-02-22 17:08               ` Kim F. Storm

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