Re: bidi-display-reordering is now non-nil by default

[Chong Yidong]

Eli Zaretskii <address@hidden> writes:

> Chong, Stefan: how about having a (customizable) list of buffer names
> which should by default have left-to-right paragraph direction?  Would
> this be a reasonable solution?  We could add buffer names to this list
> as we discover more such cases.

We could introduce a customizable variable, but I think this variable
should serve only as a fallback for individual users---it should be nil
by default.  Otherwise that discourages upstream authors from
implementing a real fix.

I don't know enough to say what the real fix is, though.  You said that
the slowdown is because "Emacs is searching for the beginning of the
paragraph, but this whole buffer is one huge paragraph."  Is it enough
for a mode to set the variable `paragraph-start' for Emacs to DTRT?  A
quick glance at the Mew source shows that it does set `paragraph-start',
though I don't know if every line is treated like a paragraph.