Anchors that include URL's w/ other text & spaces get formatted incorrectly

[netweb]

If an anchor's text begins with '​http://' and includes whitespace bbPress rendering output is invalid.

Example:

<a href="http://forums.whirlpool.net.au/forum-replies.cfm?t=1171893">http://forums.whirlpool.net.au/forum-re ... ?t=1171893</a>
<a href="http://example.com">http://example.com http with title html whitespace</a>

bbPress HTML Current Output:

​http://forums.whirlpool.net.au/forum-re ... ?t=1171893

​http://example.com http with title html whitespace

bbPress HTML Expected Output:

​http://forums.whirlpool.net.au/forum-re ... ?t=1171893

​http://example.com http with title html whitespace whitespace

If you use the same code in a standard WordPress POST all HTML rendering/output IS correct, this is only a bbPress issue.

Hat Tip @capsx for finding this

Confirmed, but it's probably important to note that WordPress comments exhibit this same behavior.

Moving to 2.2, since it's indicative of a larger issue, and won't be fixed in the short term for 2.1.3.

Related info:

​http://core.trac.wordpress.org/browser/tests/trunk/tests/formatting/MakeClickable.php#L308

'Some text with a link <a href="http://example.com">http://example.com</a>',
//'<a href="http://wordpress.org">This is already a link www.wordpress.org</a>', // fails in 3.3.1 too

​http://core.trac.wordpress.org/browser/trunk/wp-includes/formatting.php#L1622

// Cleanup of accidental links within links
$r = preg_replace( '#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $r );

​http://core.trac.wordpress.org/browser/trunk/wp-includes/default-filters.php#L151

add_filter( 'comment_text', 'make_clickable',      9 );

I'm inclined to close this, since all signs point to this being an issue in WordPress core.

Moving to Future Release for now.

Closing. See: ​#WP23050.