IF I am doing this correctly, then, there seems to be problems in the current standalone​ when there are two x-refs to a single heading. The space after “and” is missing and should the order of the refs not be alphabetical?

MWE

\starttext

\seeindex{animal}{cat}

\seeindex{animal}{quadruped}

%\seeindex{animal}{whiskers}

The \index{cat}cat has \index{whiskers} whiskers.

\blank[3*big]

\placeindex

\stoptext

Uncomment the \seeindex{animal}{whiskers} and it gets even messier. 

Alan