space in URL fools w3m-goto-url

[jidanni@xxxxxxxxxxx]

The link
<li>&nbsp;<a href="http://www.google.com.tw/search?q=%E5%B7%A5%E5%AF%AE+site:forestry.gov.tw&amp;ie=utf-8&amp;oe=utf-8";>http://www.google.com.tw/search?q=工寮&nbsp;site:forestry.gov.tw&amp;ie=utf-8&amp;oe=utf-8</a>
is rendered
  *  http://www.google.com.tw/search?q=工寮 site:forestry.gov.tw&ie=utf-8&oe=utf-8
If one puts the cursor anywhere before the space in the middle,
  g runs the command w3m-goto-url
prompts in the minibuffer with just half the URL.
If one puts the cursor on the space or afterward, the full URL is
prompted with, correctly.