Function: prolog-input-filter

prolog-input-filter is a byte-compiled function defined in prolog.el.gz.

Signature

(prolog-input-filter STR)

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/prolog.el.gz
(defun prolog-input-filter (str)
  (cond ((string-match "\\`\\s *\\'" str) nil) ;whitespace
        ((not (derived-mode-p 'prolog-inferior-mode)) t)
        ((= (length str) 1) nil)        ;one character
        ((string-match "\\`[rf] *[0-9]*\\'" str) nil) ;r(edo) or f(ail)
        (t t)))