lisp/emacs-lisp/rx.el · 3ed1621d843e057ad879fbed3605d32f55a065b9 · emacs / emacs

Disallow reversed char ranges in `rx' · 3ed1621d

Mattias Engdegård authored Mar 12, 2019

(any "a-Z0-9") generated "[0-9]", and (any (?9 . ?0)) generated "[9-0]".
Reversed ranges are either mistakes or abuse.  Neither should be allowed.

etc/NEWS: Explain the change.
lisp/emacs-lisp/rx.el (rx): Document.
(rx-check-any-string, rx-check-any): Add error checks for reversed ranges.
test/lisp/emacs-lisp/rx-tests.el (rx-char-any-range-bad): New test.

3ed1621d

rx.el 41.2 KB

Replace rx.el