Re: master a6b5985: Avoid duplicated character classes in rx

[Stefan Monnier]

>> Probably, but I still think it's bad practice to use the return value of
>> an operation which is fundamentally a side-effect.
> So you've never written
> (if (setq var value) ...)

Guilty as charged.  But every time I do so I feel a bit dirty (and not
just because I feel dirty every time I use `setq`).
And I have often regretted writing such code.

To my defense, `setq` is the only such exception I can think of.


        Stefan