* dongen <[log in to unmask]> [2012-02-02 13:18:44 +0000]:

Dear Bruno,

: Now here is the question. What I'd like to know if there's an easy way
: for a substitution of the form
:   a[expression] -> \csname myA[expression]\endcsname
: If there is an easy way to do this than this simply lets me apply the
: substitution to the guard expressions and they then give me the conditions
: that need to be satisfied before I can return the ``result'' (the text
: between the = and the |). Of course, I also have to make the substitution
: in the result.

I think I've solved the problem, so I probably won't need to know
about the substitution. If the answer is easy, I'd still like to
know. Otherwise, please forget about it.

Regards,


Marc van Dongen