Simplify redisplay-x/separate_textual_runs

[Olivier Galibert]

On Fri, Mar 30, 2007 at 11:48:58PM +0200, Aidan Kehoe wrote:
> Thanks! Please profile the two (with etc/HELLO at least working for the CJK
> languages) and post comparisons, separate_textual_runs is called quite a
> lot.

Hmm, how is one supposed to do a reasonably reproducible profile of
that code exactly?  It's too linked to the UI for me to know how to go
about it.

  OG.