Re: How to check regexp for syntax-errors? (There HAS to be SOME way, yes?)

[Kevin Rodgers]

David Combs wrote:
> Isn't there some .el that that will try to parse a regexp, and tell
> me where it got confused, and what to look for for errors?

(defun valid-regexp-p (regexp)
  (interactive "sRegexp: ")
  (with-temp-buffer
    (condition-case error-data
        (progn
          (re-search-forward regexp nil t)
          t)
      (invalid-regexp
       (when (interactive-p) (message "Invalid regexp: %s" (cdr error-data)))
       nil))))

--
Kevin Rodgers
Denver, Colorado, USA