On Thu, Nov 24, 2022 at 06:36:34AM +0300, Jean Louis wrote:
> 
> This regular expression shall match 24 hours format such as "12:34".
> 
> I do not like how I wrote this regular expression, is there way to
> provide to `rx' function something like "[012]"?

  (any "012")

or

  (any ?0 ?1 ?2)

or

  (any "0-2")

or

  (any (?0 . ?2))

Cheers
-- 
t