*** nroff-mode.el	08 May 2008 11:29:50 +1000	1.40
--- nroff-mode.el	18 Aug 2008 20:29:55 +1000	
***************
*** 144,149 ****
--- 144,160 ----
         (concat "[.']\\|" paragraph-start))
    (set (make-local-variable 'paragraph-separate)
         (concat "[.']\\|" paragraph-separate))
+ 
+   ;; Don't auto-fill directive lines starting . or ' since they normally
+   ;; have to be one line.  But do auto-fill comments .\" .\# and '''
+   ;;
+   ;; Comment directives (those starting . or ') are [.'][ \t]*\\[#"] or a
+   ;; ''', and this regexp is everything except those.  So [.'] followed by
+   ;; not backslash and not ' or followed by backslash but then not # or "
+   ;;
+   (set (make-local-variable 'auto-fill-inhibit-regexp)
+        "[.'][ \t]*\\([^ \t\\']\\|\\\\[^#\"]\\)")
+ 
    ;; comment syntax added by mit-erl!gildea 18 Apr 86
    (set (make-local-variable 'comment-start) "\\\" ")
    (set (make-local-variable 'comment-start-skip) "\\\\[\"#][ \t]*")