bug#37659: rx additions: anychar, unmatchable, unordered-or

[Mattias Engdegård]

24 okt. 2019 kl. 03.56 skrev Drew Adams <drew.adams@oracle.com>:
> 
> Is there an identifiable subset of rx features
> (operators, functions, thingies, or whatever
> its composable pieces are called) that map
> (even if not one-to-one) to regexp syntax
> components?

Almost all of rx maps one-to-one to the string regexp syntax. The rx docs 
mention the corresponding string regexps for most forms.

In addition, rx is self-explaining in the sense that a user curious about what 
a particular expression means needs only to evaluate (rx SOMETHING) to get the 
translation. (There are external packages for going in the other direction.)