Using a speech engine to highlight words

# 20200826 Raku programming solution

my \s = "Actions speak louder than words.";
my \prev = $ = "";
my \prevLen = $ = 0;
my \bs = $ = "";

for s.split(' ', :skip-empty) {
   run "/usr/bin/espeak", $_ or die;
   bs = "\b" x prevLen if prevLen > 0;
   printf "%s%s%s ", bs, prev, $_.uc;
   prev = "$_ ";
   prevLen = $_.chars + 1
}

printf "%s%s\n", "\b" x prevLen, prev;