Re: [NTG-context] Unicode superscript and subscript parentheses as operators

28 Dec 2021


      On 12/28/2021 5:54 PM, Hans Åberg via ntg-context wrote:
...
Is it possible to use the Unicode superscript and subscript parentheses as superscript and subscript operators? That is, ⁽…⁾ having the same function as ^{…}, and ₍…₎ as _{…}.
It might be something like the following, but somehow bundling the last part of \letcharcode into a command.
\appendtoks
  \catcode`⁽=\activecatcode
  \letcharcode `⁽ ^{
  \catcode`⁾=\activecatcode
  \letcharcode `⁾ }
  \catcode`₍=\activecatcode
  \letcharcode `₍ _{
  \catcode`₎=\activecatcode
  \letcharcode `₎ }
\to \everymathematics
\protected\def\FancySuperscript#1⁾{\superscript{#1}}
\protected\def\FancySubscript  #1₍{\subscript  {#1}}

\protected\def\FancyScripts
   {\catcode`⁽=\activecatcode\letcharcode`⁽=\FancySuperscript
    \catcode`₍=\activecatcode\letcharcode`₍=\FancySubscript}

\appendtoks
     \FancyScripts
\to \everymathematics

\starttext

test $ x⁽3y⁾ $

\stoptext


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