alias testvar {
var -s %var1 = test1
var -s %var2 = test2
var -s $+(%,var3.,%var2) = %var1
echo -a $eval($+(%,var3.,%var2),2) <-- does not work
echo -a ---
set -ls %var1 test1
set -ls %var2 test2
set -ls $+(%,var3.,%var2) %var1
echo -a $eval($+(%,var3.,%var2),2) <-- works
}