[a] emphasis intelligence; [b] URLs -vs- smileys

[Karl Kleinpaste <karl@jprc.com>]

[a] I've noticed that emphasization is a little too dumb regarding
(especially) end-of-phrase punctuation.  That is,
	*This is boldface*.
but
	*This is not.*
The difference is the placement of the period within the
emphasization.  Might there be hope of slight improvement to the
you've-been-emphasized detector to allow for :;.,?!"' punctuation?

[b] Another display mis-twiddle, brought to mind by seeing Brad
Templeton arguing about URL parsing in message bodies, is that
	PATH=/usr/lib/news:/bin
displays as (for those of you not using smileys, and pardon the
pseudo-HTML)
	PATH=/usr/lib/<bold>news<ironic-smiley>bin</bold>
Is it possible to make recognition of URLs avoid preceding
non-whitespace?  And for genuine URLs, can smilification be
priority-downgraded so as not to interrupt a URL (perhaps based on
there being boldface text already present)?

(For that matter, can this mis-display be avoided?
	Hey, bub, let me give you some news:
It's a content-less URL, after all.)