I have to use <pre> to describe the above:

<pre>Typing test-www.example.com creates a link only for the "www.example.com" part, but the host is "test-www", and not "www".</pre>
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How about adding the prefix "http"?

That will create the link as:
http://test-www.example.com

Maybe the Text formatting is not that smart as we expect ;)
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Maybe the "www" is the root cause?

See in below:
<pre>
test@example.com
test@www.com
</pre>
test@example.com
test@www.com

By the way, most URLs can not be recognized w/o "www" (and prefix).
e.g.
news.google.com
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Fixed in r11474. @test-www.example.com@ will no longer generate a broken link. Use protocol (eg. @http://@) for URLs that does not start with @www.@
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Merged.
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