Function tmpl

prune.js:16–18

(c)

  if (str.length <= length) return str;

  var tmpl = function(c) {
      return c.toUpperCase() !== c.toLowerCase() ? 'A' : ' ';
    },
    template = str.slice(0, length + 1).replace(/.(?=\W*\w*$)/g, tmpl); // 'Hello, world' -> 'HellAA AAAAA'

  if (template.slice(template.length - 2).match(/\w\w/))