Furthermore the example only works in TeXlive 2017 but not in beta.  What has changed and how do I make it work again? On Wed, 2017-08-09 at 17:00 +1200, Henri wrote:

Dear list,

Because I don't like that Euler calligraphic script provided by Latin Modern Math, I want to revert to Computer Modern for the uppercase calligraphic letters.  I got so far, that the command will produce the correct glyphs, however, the kerning is borken.  What did I miss?

Cheers, Henri

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% Allocate tokens for legacy math codes \newtoks\legacymathcodes\legacymathcodes={ \Umathcode`A="7"1"41 \Umathcode`B="7"1"42 \Umathcode`C="7"1"43 \Umathcode`D="7"1"44 \Umathcode`E="7"1"45 \Umathcode`F="7"1"46 \Umathcode`G="7"1"47 \Umathcode`H="7"1"48 \Umathcode`I="7"1"49 \Umathcode`J="7"1"4A \Umathcode`K="7"1"4B \Umathcode`L="7"1"4C \Umathcode`M="7"1"4D \Umathcode`N="7"1"4E \Umathcode`O="7"1"4F \Umathcode`P="7"1"50 \Umathcode`Q="7"1"51 \Umathcode`R="7"1"52 \Umathcode`S="7"1"53 \Umathcode`T="7"1"54 \Umathcode`U="7"1"55 \Umathcode`V="7"1"56 \Umathcode`W="7"1"57 \Umathcode`X="7"1"58 \Umathcode`Y="7"1"59 \Umathcode`Z="7"1"5A }

% Load CM calligraphic \font\tensy  =cmsy10 at \mathstyleface\textstyle \font\sevensy=cmsy7  at \mathstyleface\scriptstyle \font\fivesy =cmsy5  at \mathstyleface\scriptscriptstyle

% Allocate family \newfam\cmcalfam

% Assign font families \textfont        \cmcalfam=\tensy \scriptfont      \cmcalfam=\sevensy \scriptscriptfont\cmcalfam=\fivesy

% Make a macro wrapper \unexpanded\def\cmcal#1{{\fam\cmcalfam\the\legacymathcodes#1}}

\starttext

$\mathcal{TUV}$

$\cmcal{TUV}$

\stoptext