'http://foo.bar' => '<a class="external" href="http://foo.bar">http://foo.bar</a>',
'http://foo.bar/~user' => '<a class="external" href="http://foo.bar/~user">http://foo.bar/~user</a>',
'http://foo.bar.' => '<a class="external" href="http://foo.bar">http://foo.bar</a>.',
+ 'This is a link: http://foo.bar.' => 'This is a link: <a class="external" href="http://foo.bar">http://foo.bar</a>.',
+ 'A link (eg. http://foo.bar).' => 'A link (eg. <a class="external" href="http://foo.bar">http://foo.bar</a>).',
'http://foo.bar/foo.bar#foo.bar.' => '<a class="external" href="http://foo.bar/foo.bar#foo.bar">http://foo.bar/foo.bar#foo.bar</a>.',
'www.foo.bar' => '<a class="external" href="http://www.foo.bar">www.foo.bar</a>',
'http://foo.bar/page?p=1&t=z&s=' => '<a class="external" href="http://foo.bar/page?p=1&t=z&s=">http://foo.bar/page?p=1&t=z&s=</a>',