Simplify redisplay-x/separate_textual_runs

[Aidan Kehoe]

 Ar an triochadú lá de mí Márta, scríobh Olivier Galibert: 

 > On Fri, Mar 30, 2007 at 04:49:38PM +0200, Aidan Kehoe wrote:
 > > For C, the CONSTANT == VARIABLE idiom has a clear advantage over the
 > > other way around (that is, ‘+2 = dimension’ doesn’t compile) and the
 > > more it’s used, the more readable it gets. Please don’t change this
 > > idiom in future.
 > 
 > I know the why, I utterly disagree with "the more readable it gets".
 > There are compiler warnings that detect the wrong version anyway so
 > the gain is _zero_.  I will not use this idiom is any code I touch.

Readability is something subjective, the advantage to CONSTANT == VARIABLE
is not. Please don’t _change_ this idiom in the future. I’m not asking you
to use it yourself.

 > The GNU coding style is atrocious, there is no need to make it worse.
 > What next, Systems Hungarian Notation?

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