seeing artifacts from certain characters on darwin emacs

seeing artifacts from certain characters on darwin emacs

[Jonathan Swartz]

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I am seeing artifacts from certain characters (e.g. "@") when I  
navigate through a buffer, or when Emacs moves the contents of my  
buffer.

For example, here's a buffer after loading:

    http://i28.tinypic.com/2079w7c.jpg

and here's what happens if I hit "ctrl-k" six times:

    http://i30.tinypic.com/2cdg6x0.jpg

The effects are more pronounced with white-on-black, which is my usual  
setup:

    http://i31.tinypic.com/30avqtj.jpg

Hitting control-L, running (redraw-frame (selected-frame)), or moving  
the cursor over the location makes the artifacts disappear.

This is OS X 10.5.7, Emacs 22.3.1 (downloaded from http://porkrind.org/emacs/Emacs-22.3-i386-10.5.7.dmg) 
, with no .emacs or other customizations. I've seen the same behavior  
with the latest CVS snapshot, and with the Carbon emacs package from http://homepage.mac.com/zenitani/emacs-e.htmlD 
. I've also seen similar behavior in Aquamacs.

Here's the ctrl-x ctrl-= output for one of the "@" characters;

   character: @ (64, #o100, #x40, U+0040)
     charset: ascii (ASCII (ISO646 IRV))
  code point: #x40
      syntax: . 	which means: punctuation
    category: a:ASCII graphic characters 32-126 (ISO646 IRV:1983[4/0])  
l:Latin
buffer code: #x40
   file code: #x40 (encoded by coding system undecided-unix)
     display: by this font (glyph code)
      -apple-monaco-medium-r-normal--14-140-72-72-m-140-iso10646-1  
(#x40)

Has anyone else seen this? I've been living with it for a long time,  
but it is slowly driving me crazy.

Thanks!
Jon


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Re: seeing artifacts from certain characters on darwin emacs

[jaaron]

On Jul 29, 1:14 am, Jonathan Swartz <swa...@pobox.com> wrote:
> I am seeing artifacts from certain characters (e.g. "@") when I  
> navigate through a buffer, or when Emacs moves the contents of my  
> buffer.
> ...
> This is OS X 10.5.7, Emacs 22.3.1 (downloaded fromhttp://porkrind.org/emacs/Emacs-22.3-i386-10.5.7.dmg)
> , with no .emacs or other customizations. I've seen the same behavior  
> with the latest CVS snapshot, and with the Carbon emacs package fromhttp://homepage.mac.com/zenitani/emacs-e.htmlD
> . I've also seen similar behavior in Aquamacs.

Just to confirm, I've seen this same behavior from my CVS snapshot on
OS X 10.5.7:

emacs-version: GNU Emacs 23.0.95.1 (i386-apple-darwin9.7.0, NS apple-
appkit-949.46) of 2009-06-24

- jaaron

Re: seeing artifacts from certain characters on darwin emacs

[Jonathan Swartz]

> On Jul 29, 1:14 am, Jonathan Swartz <address@hidden> wrote:
> > I am seeing artifacts from certain characters (e.g. "@") when I
> > navigate through a buffer, or when Emacs moves the contents of my
> > buffer.
> > ...
> > This is OS X 10.5.7, Emacs 22.3.1 (downloaded
> > fromhttp://porkrind.org/emacs/Emacs-22.3-i386-10.5.7.dmg)
> > , with no .emacs or other customizations. I've seen the same  
> behavior
> > with the latest CVS snapshot, and with the Carbon emacs package
> > fromhttp://homepage.mac.com/zenitani/emacs-e.htmlD
> > . I've also seen similar behavior in Aquamacs.
>
> Just to confirm, I've seen this same behavior from my CVS snapshot on
> OS X 10.5.7:
>
> emacs-version: GNU Emacs 23.0.95.1 (i386-apple-darwin9.7.0, NS apple-
> appkit-949.46) of 2009-06-24
>
> - jaaron

Thanks for the confirmation jaaron - nice to know I'm not the only  
one. I've sent to bug-gnu-emacs.

Jon