fre. 7. jan. 2022 kl. 12:33 skrev J.=E2=80=AFP. As= cher via ntg-context <ntg-context@= ntg.nl>:

= Hi, all,

I'm a long time lurker (on gmane), first time poster. First, thank you<= br> all, very much, for your excellent work and superb community.
ConTeXt has become a critical part of my academic writing and integral
to my research.=C2=A0 I'm not exaggerating when I say it changed how I thought about texts and became a major source for my dissertation
work.=C2=A0 Thank you!

I'm trying to get a typescript for setting a text in Libertine with
Junicode fallbacks for characters in MUFI, in the private use area.
For some reason Libertine roman will not fallback no matter what
I do. However Libertine italic will.=C2=A0 I can also work around it by usi= ng
Junicode as a base and forcing fallback to Libertine.

My question is: why?=C2=A0 What's wrong with Libertine roman?=C2=A0 Or = my approach?

My hypothesis is that there's something about `LinLibertine_R.otf`
that's not quite right.=C2=A0 I looked in FontForge, but couldn't spot anything.

Does anyone have a suggestion as to another place to look?=C2=A0 Or somethi= ng
I'm overlooking?

Minimal example (attached too, if it comes through):

```
\definefontfeature[default][default][script=3Dlatn]

% Libertine with a Junicode fallback, lib-fb-jun

\definefontfallback[junicodefallback][name:Junicode][privateusearea][check= =3Dyes,force=3Dno]

\starttypescript [serif] [lib-fb-jun]
=C2=A0 \definefontsynonym [Libertine-Roman]=C2=A0 =C2=A0 =C2=A0[file:linlib= ertiner]
=C2=A0 \definefontsynonym [Libertine-Slanted]=C2=A0 [file:linlibertineri]= =C2=A0 % works fine
\stoptypescript

\starttypescript [serif] [lib-fb-jun] [name]
=C2=A0 \definefontsynonym [Serif]=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = [Libertine-Roman]=C2=A0 =C2=A0[features=3Ddefault,fallbacks=3Djunicodefallb= ack]
=C2=A0 \definefontsynonym [SerifSlanted]=C2=A0 =C2=A0 =C2=A0[Libertine-Slan= ted] [features=3Ddefault,fallbacks=3Djunicodefallback]
\stoptypescript

\starttypescript [lib-fb-jun]
=C2=A0 \definetypeface [lib-fb-jun] [rm] [serif] [lib-fb-jun] [default]
\stoptypescript

% Junicode with Libertine as a fallback, preferring Libertine, jun-pr-lib % this hack does what I want the above to do

\definefontfallback[preferlibertine][name:linlibertineo][0-FFFFF][check=3Dy= es,force=3Dyes]

\starttypescript[serif] [jun-pr-lib]
=C2=A0 =C2=A0\definefontsynonym [JunicodeRoman] [name:Junicode]
\stoptypescript

\starttypescript[serif] [jun-pr-lib] [name]
=C2=A0 =C2=A0\definefontsynonym [Serif] [JunicodeRoman] [fallbacks=3Dprefer= libertine]
\stoptypescript

\starttypescript [jun-pr-lib]
=C2=A0 \definetypeface [jun-pr-lib] [rm] [serif] [jun-pr-lib] [default]
\stoptypescript

% some tracking stuff

\enabletrackers[fonts.missing=3Dreplace]
\enabledirectives[logs.errors]

% text, we use lib-fb-jun first, then jun-pr-lib

\starttext
\setupbodyfont[lib-fb-jun]

{\em emph. lib-fb-jun: \Uchar61125 \char64259 \utfchar{"eec5} (three g= lyphs)}

lib-fb-jun: \Uchar61125 \char64259 \utfchar{"eec5} (three glyphs)=C2= =A0 % <- fallback fails here

\switchtobodyfont[jun-pr-lib]

jun-pr-lib: \Uchar61125 \char64259 \utfchar{"eec5} (three glyphs) % &l= t;- works

\stoptext
```

Any ideas?

Most warmly,
-jp

--
J.=E2=80=AFP. Ascher
Preceding: https://doi.org/10.18130/jqpe-zc65
Current: http://www.bibsoc.org.uk/content/2020-2021-0

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