[NTG-context] Heisenbug in current?

Thomas A. Schmitz thomas.schmitz at uni-bonn.de
Wed Nov 23 23:01:30 CET 2022

Hi all,

I'm very hesitant to report this because I can't reproduce it 
consistently: some of my files don't compile with bizarre font errors, 
sometimes. At first I thought it may be a hardware problem on my laptop, 
but I've seen more or less the same error on 3 different computers now, 
intermittently. The offending call is always similar:

fonts           > otf loading > loading 
hash 'dejavusansmono'
otf reader      > fatal error in file 
attempt to call a nil value (field 'to16dot16')

It concerns several fonts, both my own and (as here) from the 
installation, and the first error is always this "field 'to16dot16.'" 
Has anybody else seen this? Do the developers have any idea what this 
could be? Has there been a change in the code concerning this field?

Sorry for being so vague, but I'm pulling my hair  because this error 
crops up totally at random, AFAICS.

All best


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