Linux HTML mail agent with RTL and LTR paragraph explicit support

[Eli Zaretskii]

> Date: Wed, 27 Jun 2012 10:45:49 +0300
> From: Nadav Har'El <nyh at math.technion.ac.il>
> Cc: Dotan Cohen <dotancohen at gmail.com>, shachar at shemesh.biz,
> 	linux-il at cs.huji.ac.il
> 
> On Tue, Jun 26, 2012, Eli Zaretskii wrote about "Re: Linux HTML mail agent with RTL and LTR paragraph explicit support":
> > In a nutshell, a paragraph is delimited by hard newlines (which could
> > be some sequence of characters such as CRLF, or something else,
> > depending on the platform, the application, and the context) or by a
> > special character u+2029 PARAGRAPH SEPARATOR.
> 
> I think this phrase "depending on the platform, the application, and the
> context" is exactly what bothered Shachar.

I don't think there's a real problem here, because the UBA refers to
UAX#13, whose guidelines, if followed, cause all the possible newline
sequences to be treated alike on the receiving end of the mail.

> If someone writes a
> plain-text mail and assumes that, say, an empty line separates
> paragraphs, because this what works in his platform, and his
> application, it is possible that in the receiver's application or
> platform, this won't be recognized as a paragraph break.

An empty-line paragraph separator is a superset of a newline as
paragraph separator.  So if the receiving MUA interprets each hard
newline as paragraph separator, it will certainly interpret empty
lines as such.  So again, this is not a big problem in practice.