In message

, at 03:10:49 on Thu, 29 May 2014, Recliner
remarked:
So whitespace is allowed in *text* representations, such as usenet
postings. *After* the url has been extracted from the text, *then* the
spaces should be encoded (before being passed to the browser).

And the URL you (or Agent) presented to Firefox still had the embedded
space, rather than a %20, hence the problem. In my case, I just deleted the
unwanted space, and it worked.

No, my client extracted the url perfectly well (not just from my
original posting, but it would also do so from Colin's comment to my
posting where he included the delimited url). I didn't have a problem.
--
Roland Perry