Re: U+1FB7 in Dejavu Sans Mono, at size 12 (Greek small alpha with perispomeni+ypogegrammeni)

On Tue, Jun 10, 2008 at 9:18 PM, James Cloos <cloos <at> jhcloos.com> wrote:
>>>>>> "Simos" == Simos Xenitellis <simos.lists <at> googlemail.com> writes:
>
> Simos> I just noticed that U+1FB7, ᾷ, at size 12 and rendered with
> Simos> DejaVu Sans Mono, is shown incorrectly. It is shown as with a
> Simos> macron (horizontal line) instead of something like a tilde.
>
> I just tried it in ftview.  (AIUI, at ftview's default dpi, pt size ≡ pt/em.)
>
> With the bytecode interpreter and grayscale, I saw a clear tilde at all
> readable pt sizes.  With forced autofitting, the tilde looked like a
> macron at 22, 21, 20, 19, 16, 15, 11 and 10 pt/em.
>
> Without anitaliasing, and as expected, given the instructions, it is
> hard to read at any size below 15 or 16.  But the autofitter still ends
> up with more of a macron at 10, 11, 15 and 16 pt/em.
>
> This may, then, be a freetype bug rather than a DejaVu bug.
>
> This is with freetype from cvs as of June 05.  I believe there were some
> more changes since then, perhaps also a release.
>
> Σιμοσ:  Do you use autofit or bytecode?

Thanks for reminding me this.

I keep the standard settings found in Ubuntu 8.04, which means that
the bytecode interpreter is not enabled.
I use autofit (autohinting).

Indeed, DejaVu is apparently fine.
The character ᾷ appears as if it has a macron (flat horizontal line)
to me when all these apply:

1. The font is DejaVu Sans Mono
2. The font size is 12 points (it has to be 12 points)
3. In the font properties, Hinting has been set to Slight (it has to
be "Slight")

It is interesting to note that no matter what the other options are
set in the gnome-appearence-properties applet,
it is the setting of Hinting to Slight that makes the difference.

Cheers,
Simos
-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
DejaVu-fonts mailing list
DejaVu-fonts <at> lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dejavu-fonts