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From: Jacob Kauffmann via ntg-context <ntg-context@ntg.nl>
Newsgroups: gmane.comp.tex.context
Subject: Re: problem with Segoe Ui Symbol as fallback font
Date: Wed, 4 Jan 2023 13:32:49 +0100
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Hi Hraban,

I had a similar problem with math fallbacks (no errors, fallbacks not =
used) and just found a solution.
Please find a small example below.

I don't understand why we need the line \definefontfamily, but it's =
necessary for the fallbacks to work.
Also, it stops working when I do \setupbodyfont[mainface,rm].

Cheers,
Jacob

=
\definefontfallback[cal-fallback][name:modern][uppercasescript,lowercasesc=
ript]

\starttypescript[mainface]
  \definetypeface[mainface][rm][serif][palatino][default]
  \definetypeface[mainface][ss][sans] [modern]  [default][rscale=3D1.075]
  \definetypeface[mainface][tt][mono] [modern]  [default][rscale=3D1.075]
  \definetypeface[mainface][mm][math] =
[palatino][default][fallbacks=3Dcal-fallback]
\stoptypescript

\definefontfamily[mainface][math][]
\usetypescript[mainface]
\setupbodyfont[mainface]

\starttext
{\rm \input ward }

{\ss \input ward }

{\tt \input ward }

Should be Palatino: $x + y$

Should be Latin Modern: ${\cal I}$ $\mathcal{I}$ $\mathscr{I}$
\stoptext

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">Hi =
Hraban,<div class=3D""><br class=3D""></div><div class=3D"">I had a =
similar problem with math fallbacks (no errors, fallbacks not used) and =
just found a solution.</div><div class=3D"">Please find a small example =
below.</div><div class=3D""><br class=3D""></div><div class=3D"">I don't =
understand why we need the line \definefontfamily, but it's necessary =
for the fallbacks to work.</div><div class=3D"">Also, it stops working =
when I do \setupbodyfont[mainface,rm].</div><div class=3D""><br =
class=3D""></div><div class=3D"">Cheers,</div><div =
class=3D"">Jacob</div><div class=3D""><br class=3D""></div><div =
class=3D""><div class=3D""><font face=3D"Menlo" =
class=3D"">\definefontfallback[cal-fallback][name:modern][uppercasescript,=
lowercasescript]</font></div><div class=3D""><font face=3D"Menlo" =
class=3D""><br class=3D""></font></div><div class=3D""><font =
face=3D"Menlo" class=3D"">\starttypescript[mainface]</font></div><div =
class=3D""><font face=3D"Menlo" class=3D"">&nbsp; =
\definetypeface[mainface][rm][serif][palatino][default]</font></div><div =
class=3D""><font face=3D"Menlo" class=3D"">&nbsp; =
\definetypeface[mainface][ss][sans] [modern] =
&nbsp;[default][rscale=3D1.075]</font></div><div class=3D""><font =
face=3D"Menlo" class=3D"">&nbsp; \definetypeface[mainface][tt][mono] =
[modern] &nbsp;[default][rscale=3D1.075]</font></div><div class=3D""><font=
 face=3D"Menlo" class=3D"">&nbsp; \definetypeface[mainface][mm][math] =
[palatino][default][fallbacks=3Dcal-fallback]</font></div><div =
class=3D""><font face=3D"Menlo" =
class=3D"">\stoptypescript</font></div><div class=3D""><font =
face=3D"Menlo" class=3D""><br class=3D""></font></div><div =
class=3D""><font face=3D"Menlo" =
class=3D"">\definefontfamily[mainface][math][]</font></div><div =
class=3D""><font face=3D"Menlo" =
class=3D"">\usetypescript[mainface]</font></div><div class=3D""><font =
face=3D"Menlo" class=3D"">\setupbodyfont[mainface]</font></div><div =
class=3D""><font face=3D"Menlo" class=3D""><br =
class=3D""></font></div><div class=3D""><font face=3D"Menlo" =
class=3D"">\starttext</font></div><div class=3D""><font face=3D"Menlo" =
class=3D"">{\rm \input ward }</font></div><div class=3D""><font =
face=3D"Menlo" class=3D""><br class=3D""></font></div><div =
class=3D""><font face=3D"Menlo" class=3D"">{\ss \input ward =
}</font></div><div class=3D""><font face=3D"Menlo" class=3D""><br =
class=3D""></font></div><div class=3D""><font face=3D"Menlo" =
class=3D"">{\tt \input ward }</font></div><div class=3D""><font =
face=3D"Menlo" class=3D""><br class=3D""></font></div><div =
class=3D""><font face=3D"Menlo" class=3D"">Should be Palatino: $x + =
y$&nbsp;</font></div><div class=3D""><font face=3D"Menlo" class=3D""><br =
class=3D""></font></div><div class=3D""><font face=3D"Menlo" =
class=3D"">Should be Latin Modern: ${\cal I}$ $\mathcal{I}$ =
$\mathscr{I}$</font></div><div class=3D""><font face=3D"Menlo" =
class=3D"">\stoptext</font></div></div></body></html>=

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