\starttext

test {\red\underrandoms{test me}} and \underrandom{test} or \underrandom{grep} \blank
test {\red\underdashes {test me}} and \underdash  {test} or \underdash  {grep} \blank
test {\red\underdots   {test me}} and \underdot   {test} or \underdot   {grep} \blank

\testfeatureonce{10}{ % ##1 == \currentfeaturetest
    \dorecurse{100}{
        test {\red\underdots{test me ##1}} and \underdot{test ##1} or \underdot{grep ##1}
        test {\red\underbars{test me ##1}} and \underbar{test ##1} or \underbar{grep ##1}
    }\blank
}

\stoptext
