[NTG-context] Problem with fonts in Lua

[Wolfgang Schuster]

MANUEL GONZALEZ SUAREZ schrieb am 15.09.2020 um 12:00:
> Hi all:
> 
> I have this minimal example (thanks to Pablo and Charles):
> 
> \mainlanguage [es]
> 
> \definefallbackfamily [mainface] [rm] [New Athena Unicode]
> 
> [preset = range: greek, force = yes]
> 
> % \definefallbackfamily [mainface] [rm] [Old Standard]
> 
> % [preset = range: greek, force = yes]
> 
> \definefontfamily [mainface] [rm] [TeX Gyre Pagella]
> 
> \definefontfamily [mainface] [ss] [TeX Gyre Heros, scale = 0.75]
> 
> \setupbodyfont [mainface]
> 
> \starttext
> 
> Spanish text
> 
> \input tufte
> 
> Greek Text:
> 
> Μετὰ δὲ ταῦτα οὐ πολλαῖς ἡμέραις ὕστερον ἦλθεν ἐξ
> 
> Ἀθηνῶν Θυμοχάρης ἔχων ναῦς ὀλίγας · καὶ εὐθὺς ἐναυμάχησαν αὖθις 
> Λακεδαιμόνιοι καὶ Ἀθηναῖοι, ἐνίκησαν δὲ
> 
> Λακεδαιμόνιοι ἡγουμένου Ἀγησανδρίδου.
> 
> \stoptext
> 
> I compile with TeXLive 2020 and Windows 10. I have the two fonts (New 
> Athena Unicode and Old Standard) installed on my system but with New 
> Athena Unicode it does not compile; on the other hand, with Old Standard 
> it does compile. I do not know what I can do.

1. Remove the spaces from the key-val entries

2. Don't mix key-val entries with arguments

3. Load hyphenation patterns for greek (you can add them to spain 
because there is no overlap).

The following example works on my system but I suggest to add a math 
font (itemize uses math symbols as fallback).

\definefallbackfamily
   [mainface] [rm] [New Athena Unicode]
   [preset=range:greek,force=yes]

\definefontfamily [mainface] [rm] [TeX Gyre Pagella]

\definefontfamily [mainface] [ss] [TeX Gyre Heros] [scale=0.75]

\setuplanguage [es] [patterns={es,gr}]

\setupbodyfont [mainface]

\mainlanguage[es]

\starttext

\samplefile{cervantes-es}

\samplefile{aristotle-grc}

\stoptext

Wolfgang