[NTG-context] accessing glyphs in the private area

David Carlisle davidc at nag.co.uk
Mon Oct 1 23:11:59 CEST 2018

Ulrike and Hans wrote

 > > It is not only that font. Actually the libertine package broke,
 > > fontawesome broke, and Coelacanth was only used by Thérèse in the
 > > example as it is free, her real problem was with using Goudy
 > > fleurons.

 > in context i strongly advice against using numbers instead of names

It's not just explicit numbers via \char, it's character data in 
documents using specific fonts with documented PUA characters

Many fonts use this for assorted reasons
notably SIL fonts using it for minority languages not in Unicode and 
Microsoft for all kinds of CJK stuff.

Given how many reports are appearing in the few days that this has been 
exposed to a larger number of uses via LaTeX, use of PUA characters 
really isn't a rare occurrence at all.

If you need to allocate a block for internal use wouldn't it be possible
to use one of the high areas Supplementary Private Use Area-A or B
(U+F0000 - U+FFFFF) (U+100000 - U+10FFFF) ?

The BMP PUA block (U+E000 U+F8FF) just has so many documented uses in 
existing fonts.



The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is:
Wilkinson House, Jordan Hill Road, Oxford OX2 8DR, United Kingdom.

This e-mail has been scanned for all viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ntg.nl/pipermail/ntg-context/attachments/20181001/d7d211fb/attachment.html>

More information about the ntg-context mailing list