On Sun, Apr 13, 2008 at 07:09:16PM -0700, Randy Dunlap wrote:

quoted text
> AFAIK, 2 spaces at the end of sentences is a typewriter-ism, for easier
> visual separation of sentences.
> Probably (just guessing here) has to do with monospace fonts vs.
> (not having) proportional ones there (usually).

In a sense...  Basically, the real rules are
	* inter-sentence space is naturally wider than inter-word one
	* if you need to stretch line, inter-sentence spaces get
proportionally more than inter-word ones.
	* if you need to shrink line, they get proportionally less.
	* there are fun extra considerations for quoted sentences and
friends.

For monospace almost nothing of that can be applied, but the first part
(wider inter-sentence spaces) is more painful to ignore.  The ratio for
normally typeset text is going to be less than 2, but it's easier on
eyes to approximate it with 2 than with 1...
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