function checkAmbiguous(k) {
    let i = k.indexOf('~');
    if (i !== -1) {
        let stem = k.substring(0, i);
        ambiguous[stem] = true;
        return true;
    }
    return false;
}
function checkAmbiguous(k) {
    let i = k.indexOf('~');
    if (i !== -1) {
        let stem = k.substring(0, i);
        ambiguous[stem] = true;
        return true;
    }
    return false;
}
function checkAmbiguous ( k ) { let i = k . indexOf ( '~' ) ; if ( i !== - 1 ) { let stem = k . substring ( 0 , i ) ; ambiguous [ stem ] = true ; return true ; } return false ; }
Some keys contain a disambiguation mark:  "Eko~ca" vs "Eko~gr" If so, we save these in an `ambiguous` object for later use
Some keys contain a disambiguation mark : Eko~ca vs Eko~gr If so we save these in an ambiguous object for later use