//echo -a $mid((fishy),2,-1) -- $mid(LfishyR,2,-1) -- $remove((fishy),$chr(40),$chr(41)) -- $remove((fis()hy),$chr(40),$chr(41)) -- $regsubex((fishy),^\((.*)\)$,\1) -- $regsubex((fis()hy),^\((.*)\)$,\1) -- $regsubex(LfishyR,^\((.*)\)$,\1)
This will illustrate that depending on your exact requirement, $regsubex may be the only short solution as $remove will remove the character everywhere and $mid will just ignore any character here.