Bug#399183: [SPAM] - Re: Bug#399183: xserver-xorg: incorrectly calculates TrueTypefontmetrics - Bayesian Filter detected spam

["Sergei Golovan" <sgolovan@nes.ru>]

On 6/18/07, Drew Parsons <dparsons@debian.org> wrote:
> Thanks for that, I'm looking at dejavu now using xfontsel as well as xfd
> and gfontview.
>
> Moreover I can't see any difference between iso8859-1 and iso10646-1.
> In both cases the ascents and descents vary between letters.

I've attached two screenshots of Dejavu font in xdf window. Firstly,
the window size is different for encoding iso8859-1 and iso10646-1 (it
may indicate that font metrics differ). Moreover, I selected 'hyphen
char' in both windows and you can see that its dimensions is not the
same in iso8859-1 (width 6; left 1; right 5; accent 6; descent -4) and
iso 10646-1 (width 6; left 1; right 6; accent 18; descent 6). The
latter metrics look awful.

> I double checked they were indeed different between characters using
> xmag.
>
> Can you explain in more detail precisely how you're perceiving the
> problem?  Some screenshots might help.

Another two screenshots contain text samples made by Dejavu and Arial
fonts. The upper sample is produced using 8-bit font encoding
(iso8859-1 for dejavu and koi8-r for arial - it contains some
cyrillic). The problem is that the samples look differently, which is
unacceptable in my view.

I've also attached magnified samples for which the differences are
highlighted by thing red strokes.

> Could you also tell us which versions you now have installed, including
>         xserver-xorg

1:7.1.0-16

>         xserver-xorg-core

2:1.1.1-21

>         xbase-clients

1:7.1.ds1-2

>         libxfont1

1:1.2.2-2

>         ttf-dejavu

2.15-1 (but I don't think that the bug is in font packages)

> and which kernel and architecture you have  (uname -srvo), and the

Linux 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007 GNU/Linux

> versions of any other packages you think might be relevant to the bug?

I have no idea about other packages (I'm not an X expert).

Thanks!
--
Sergei Golovan

Attachment: dejavu-iso8859-1.png
Description: PNG image

Attachment: dejavu-iso10646-1.png
Description: PNG image

Attachment: dejavu-sample.png
Description: PNG image

Attachment: dejavu-sample-x5.png
Description: PNG image

Attachment: arial-sample.png
Description: PNG image

Attachment: arial-sample-x5.png
Description: PNG image