bug#15555: Re: bug#15555: 24.3; Bidirectional display very slow with long lines

[Stefan Monnier]

> Are you sure that bidi_copy_it doesn't add one more bottleneck to the whole
> stuff?

Eli's argument is not that bidi adds its own bottlenecks, but that there
are sufficiently other bottlenecks that there's not much point trying to
address bidi's bottlenecks until we start tackling the other ones.


        Stefan