Re: [External] : rx of (any SET...)

[Michael Albinus <michael.albinus@gmx.de>]

Drew Adams <drew.adams@oracle.com> writes:

Hi Drew,

> Dunno about rx.  But what happens when `mm-7bit-chars'
> isn't bound and true?  Your string is then "[^]", not
> a valid regexp.  (Maybe you take care of that elsewhere?)

In practice, it always works. This is because this check is used in
tramp-bug, while composing the message. And while composing the message,
package mm-bodies is already loaded. Using bound-and-true-p is just for
pacifying the byte compiler.

This code snippet is 20 years old. Time to replace bound-and-true-p by
(defvar mm-7bit-chars)

But the question remains: how to express (concat "[^" mm-7bit-chars "]")
in rx notation?

Best regards, Michael.