[texhax] Before and After Display Hooks

[Uwe Lueck]

I wrote 02.05.2011 10:11:36:

> I wondered whether it suffices for the application
> to redefine LaTeX's \[, \], \display, and \enddisplay

Sorry, I thought of `displaymath' instead of `display',
but \displaymath expands to \[ and \enddisplaymath
expands to \]\@ignoretrue, so it would suffice to
modify the definitions of \[ and \].

Cheers,

    Uwe.