(prolog-mode-variables):

Set imenu-generic-expression.

diff --git a/lisp/progmodes/prolog.el b/lisp/progmodes/prolog.el
index 7817b2555be0850b79380d8109605eede7403b74..593d3a8de31c23f8e85190c9d84d81bf65334ec1 100644 (file)
--- a/lisp/progmodes/prolog.el
+++ b/lisp/progmodes/prolog.el
@@ -93,6 +93,8 @@ nil means send actual operating system end of file."
   (setq paragraph-separate paragraph-start)
   (make-local-variable 'paragraph-ignore-fill-prefix)
   (setq paragraph-ignore-fill-prefix t)
+  (make-local-variable 'imenu-generic-expression)
+  (setq imenu-generic-expression "^[a-z][a-zA-Z0-9_]+")
   (make-local-variable 'indent-line-function)
   (setq indent-line-function 'prolog-indent-line)
   (make-local-variable 'comment-start)