Re: paragraphs.el: do forward-sentence and friends not work?

[David Reitter <david.reitter@gmail.com>]

On 13 Feb 2008, at 20:00, Stephen J. Turnbull wrote:
> Because AFAIK it's still Chicago Manual of Style-standard to follow a
> sentence-ending period with two spaces in typed documents.  (Even with
> a proportional font, Emacs will not insert extra visual space to
> delimit a sentence unless it's present in the document.)

I don't have the Chicago Manual of Style here, but may I quote from  
Wikipedia (from the French_spacing article):

===
Recently some widely-used American style guides, notably the Chicago  
Manual of Style, call for a single space after full stops and colons. 
[86][87] In chapter 6 Punctuation
section 3 Typographic and Aesthetic Considerations, for example, the  
Chicago Manual of Style states:

     6.11 Space between sentences

     In typeset matter, one space, not two (in other words, a regular  
word space), follows any mark of punctuation [sic] that ends a  
sentence, whether a period, a colon [sic], a question mark, an  
exclamation point, or closing quotation marks.
The FAQ to the Chicago Manual of Style explicitly states that the  
"traditional American practice" is to double-space after colons and  
periods (without mentioning semi-colons) but then states that "This  
practice is discouraged by the University of Chicago Press".[88]
===

But whatever the manual says, why impose on the user?


On 13 Feb 2008, at 20:36, Stefan Monnier wrote:

> The problem is that "half the world" doesn't know that "the other  
> half"
> uses 2-spaces after a ".".  So the docstring of
> sentence-end-double-space should probably explain that this is
> a convention used throughout North America (AFAICT).

I wonder whether this is either something that should be part of MULE.
Or, won't setting `sentence-end-double-space' to nil make it work in  
most other cases?
The regular expression could be improved to recognize abbreviations  
correctly.