1 files changed, 5 insertions, 3 deletions

diff --git a/lisp/textmodes/fill.el b/lisp/textmodes/fill.el
index bd157316b4f..7318a52d8a9 100644
--- a/lisp/textmodes/fill.el
+++ b/lisp/textmodes/fill.el
@@ -52,7 +52,8 @@ A value of nil means that any change in indentation starts a new paragraph."
 
 (defvar fill-paragraph-function nil
   "Mode-specific function to fill a paragraph, or nil if there is none.
-If the function returns nil, then `fill-paragraph' does its normal work.")
+If the function returns nil, then `fill-paragraph' does its normal work.
+A value of t means explicitly \"do nothing special\".")
 
 (defvar fill-paragraph-handle-comment t
   "Non-nil means paragraph filling will try to pay attention to comments.")
@@ -761,7 +762,8 @@ If `fill-paragraph-function' is nil, return the `fill-prefix' used for filling."
                  (barf-if-buffer-read-only)
                  (list (if current-prefix-arg 'full))))
   ;; First try fill-paragraph-function.
-  (or (and (or fill-paragraph-function
+  (or (and (not (eq fill-paragraph-function t))
+           (or fill-paragraph-function
                (and (minibufferp (current-buffer))
                     (= 1 (point-min))))
            (let ((function (or fill-paragraph-function
@@ -773,7 +775,7 @@ If `fill-paragraph-function' is nil, return the `fill-prefix' used for filling."
                  ;; fill-paragraph-handle-comment back to t explicitly or
                  ;; return nil.
                  (fill-paragraph-handle-comment nil)
-                 fill-paragraph-function)
+                 (fill-paragraph-function t))
              (funcall function arg)))
       ;; Then try our syntax-aware filling code.
       (and fill-paragraph-handle-comment