bug#20871: 25.0.50; fill-single-char-nobreak-p does not recognize a single-letter word when it is preceded by an open paren

[Marcin Borkowski <mbork@mbork.pl>]

On 2016-04-17, at 16:49, Eli Zaretskii <eliz@gnu.org> wrote:

>> I see.  So you suggest that instead of patching
>> `fill-single-char-nobreak-p' I should have provided another function,
>> customized for Polish?
>
> Yes, I think so.  There's already fill-french-nobreak-p, why shouldn't
> there be a Polish predicate?
>
>> [...]
>
> Not necessarily: that space that precedes the word is by itself a
> line-breaking opportunity.  IOW, Emacs will break before 'a' in " a",
> and the penalty will be only 1 character.  By contrast, breaking
> before the parenthesis in your case will yield a penalty of 2
> characters, which is a different tradeoff, worthy of asking the user
> explicitly to agree to.
>
> The default value of fill-nobreak-predicate is nil for a reason.

I see.  So I'm going to prepare a patch where a new function is
introduced for Polish typography, and once it is accepted (which I hope
will happen:-)) I'm going to close this bug.

Best,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University