Automatic \key wrapping for symbols

[tweh]

A symbol should automatically detect if it’s inside of a \key or not and add a \key around itself if it’s not jet inside of one.

(by Christophe)
I think that you can improve special keys. For example, I'm adding some calculator keys. I use the following method.

\makeatletter
% Calculator keys
    \newcounter{@CounterKeys}

    \newcommand*\ksquare{\ifnum\value{@CounterKeys}>0 ${}^2$  \else \keys{${}^2$} \fi}
    \newcommand*\kpower{\ifnum\value{@CounterKeys}>0 $x^y$ \else \keys{$x^y$} \fi}

% General methods
    \let\@oldKeys\keys

    \renewcommand\keys[1]{%
        \addtocounter{@CounterKeys}{1}%
        \@oldKeys{#1}%
        \addtocounter{@CounterKeys}{-1}%
    }
\makeother 

This allows then to use \ksquare or \keys{\ksquare} without problem.

[tweh]

Ideas

• all menu macros use a boolean \mk@inside@<macro name>
• \ensuremenumacro{<macor name>}{<content macro>} makes sure that the content macro is always inside of the given menu macro
• starred version of symbol name could suppress the wrapping to be able to typeset the “naked“ symbol where desired.