cm unicode font: missing tounicode of oldstyle nums

cm unicode font: missing tounicode of oldstyle nums

[Ulrike Fischer]

cmunrm.otf uses "unstandard" names for the glyphs of the old style
numbers, e.g. oneoldstyle. 

This means that the glyphs don't get a tounicode mapping:

\starttext 
\pdfvariable compresslevel=0
\font\test={file:cmunrm.otf:mode=node;script=latn;language=DFLT;+onum;}\test
abc123
\stoptext


gives 

6 beginbfchar
<0042> <0061>
<0043> <0062>
<0044> <0063>
<0874> <FFFD>
<0875> <FFFD>
<0876> <FFFD>
endbfchar

The names are in glyphtounicode.tex, which contains e.g.
\pdfglyphtounicode{oneoldstyle}{0031}

So it doesn't looks as if they were completly unusual. Would it be
possible to add tounicode mappings for these name?

And how can one declare mappings for really unusual names? 


-- 
Ulrike Fischer 
https://www.troubleshooting-tex.de/

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Re: cm unicode font: missing tounicode of oldstyle nums

[Hans Hagen]

On 10/27/2019 6:04 PM, Ulrike Fischer wrote:
> cmunrm.otf uses "unstandard" names for the glyphs of the old style
> numbers, e.g. oneoldstyle.
> 
> This means that the glyphs don't get a tounicode mapping:
> 
> \starttext
> \pdfvariable compresslevel=0
> \font\test={file:cmunrm.otf:mode=node;script=latn;language=DFLT;+onum;}\test
> abc123
> \stoptext
> 
> 
> gives
> 
> 6 beginbfchar
> <0042> <0061>
> <0043> <0062>
> <0044> <0063>
> <0874> <FFFD>
> <0875> <FFFD>
> <0876> <FFFD>
> endbfchar
> 
> The names are in glyphtounicode.tex, which contains e.g.
> \pdfglyphtounicode{oneoldstyle}{0031}
> 
> So it doesn't looks as if they were completly unusual. Would it be
> possible to add tounicode mappings for these name?
I saw the message on the list. It has to do with the fact that the font 
has these glyphs in the private unicode area. There were two ways to 
deal with this case so I added both catches. No beta posted yet.

Hans


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