[luatex] Logging of font names in box log output

Hans Hagen pragma at wxs.nl
Wed Sep 9 19:17:16 CEST 2015

On 9/9/2015 5:21 PM, David Carlisle wrote:

> a) list the new primitive \fontid in section 2.7 (or wherever else you
> feel makes sense)


> b) document that the define_font callback can return a fontid
> (integer) The manual
> documents it as returning a table, which meant I didn't know what to do having
> detected a duplicate, but I found this text in the changelog which led
> to the above.
> * The 'define_font' callback interface has changed a little.
> It is now:
> retval = function (name,size,fontid)
> where fontid is the internal font number of the font that
> is currently being defined, and retval can be either a table
> (as before) or a different, previously defined fontid. This is
> useful if a previous definition can be reused instead of
> creating a whole new font structure.


it could be the id of an already defined font (e.g. with font.define)


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