Re: line adjustment at the end of a sentence

[Eli Zaretskii]

> Date: Thu, 27 Sep 2012 00:44:54 +0700
> From: Yuri Khan <yuri.v.khan@gmail.com>
> Cc: Tom Kramer <kramer@cme.nist.gov>,
>       "help-gnu-emacs@gnu.org" <help-gnu-emacs@gnu.org>
> 
> Differentiating between end-of-sentence full stop and in-sentence
> period by the number of spaces is an artifact of pre-Unicode
> typography. When the only available space was the ASCII 0x20, it made
> sense. Now it doesn’t, as we have the U+0020 SPACE, the U+00A0
> NON-BREAKING SPACE, and the U+2009/U+200A THIN SPACE and HAIR SPACE,
> respectively, as well as other fixed-width spaces.

But in the real world, there's still a lot of text with 2 spaces
between sentences, and Emacs needs to DTRT with that.  An editor
cannot throw in the towel when it bumps into text that uses two
spaces.