Re: [Devel] severe problems with Legendum.otf

[Rogier van Dalen]

Werner LEMBERG wrote:

> Van Dalen's Legendum.otf version 5.0 (I forgot the URL; the font is
> GPLed) produces catastrophic results with the current CVS (unmodified)
> if not using the autohinter but the native hinter, as tested with
> ftview.  For example, the letter `T' becomes a triangle, and both `1'
> and `I' are heavily distorted.  David, can you have a look at it?
>  
I have to admit I didn't know I ever got to version 5.0... I think this 
should be 0.5?

Anyway, I sent a message to this list about this problem last year 
(<http://www.freetype.org/pipermail/devel/2002-September/008366.html>). 
The problem is the different interpretation of the MSIRP instruction. 
FreeType has an /* UNDOCUMENTED BEHAVIOUR */ part for twilight points 
which I can't reproduce at all using Windows 95 and 2000, if I remember 
correctly. I actually thought a patch that basically deleted that bit of 
code was around but it wasn't applied yet because David wasn't sure this 
wouldn't break other fonts.
I suppose, however, that any font that would cause problems if the patch 
were to be applied would look equally bad on Windows machines. So maybe 
the (incorrect?) "undocumented behaviour" part for the MSIRP instruction 
were added by analogy with other instructions for which it does produce 
the correct behaviour.

Hope this helps,

Rogier