[NTG-pdftex] vf font expansion bug

The Thanh Han hanthethanh at gmail.com
Thu Mar 26 10:25:41 CET 2020

On Wed, Mar 25, 2020 at 2:18 PM Hans Hagen <j.hagen at xs4all.nl> wrote:

> On 3/25/2020 2:06 PM, The Thanh Han wrote:
> > Hi Karl,
> >
> > it seems the primary problem is that pdftex tries to set font expansion
> > parameters for a font without checking if the font has been
> > successfully loaded (hence it modifies null_font which is totally wrong).
> >
> > Please find the proposed patch attached. I have tested it against your
> > test files (thanks again for making things easy to reproduce).
> But shouldn't there be some message then too?

I agree clear message should be given when something goes wrong. In
this case however I don't know what  message should pdftex say. The
fix is about preventing pdftex from doing something it should not, i.e.
expansion parameters for a font that could not be loaded.

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