* modes.texi (Running Hooks): Mention buffer-local hook variables

Fixes: debbugs:6218

doc/lispref/ChangeLog

@@ -1,5 +1,8 @@
 2011-07-13  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
+	* modes.texi (Running Hooks): Mention buffer-local hook variables
+	(bug#6218).
+
 	* objects.texi (General Escape Syntax): "a with grave accent" is
 	?xe0, not ?x8e0 (bug#5259).
 

doc/lispref/modes.texi

@@ -101,6 +101,11 @@ one, with no arguments.
 The hook variable's value can also be a single function---either a
 lambda expression or a symbol with a function definition---which
 @code{run-hooks} calls.  But this usage is obsolete.
+
+If the hook variable is buffer-local, the buffer-local variable will
+be used instead of the global variable.  However, if the buffer-local
+variable contains the element @code{t}, the global hook variable will
+be run as well.
 @end defun
 
 @defun run-hook-with-args hook &rest args
@@ -169,11 +174,11 @@ function goes at the end of the hook list and will be executed last.
 value is a single function; it sets or changes the value to a list of
 functions.
 
-If @var{local} is non-@code{nil}, that says to add @var{function} to
-the buffer-local hook list instead of to the global hook list.  If
-needed, this makes the hook buffer-local and adds @code{t} to the
-buffer-local value.  The latter acts as a flag to run the hook
-functions in the default value as well as in the local value.
+If @var{local} is non-@code{nil}, that says to add @var{function} to the
+buffer-local hook list instead of to the global hook list.  This makes
+the hook buffer-local and adds @code{t} to the buffer-local value.  The
+latter acts as a flag to run the hook functions in the default value as
+well as in the local value.
 @end defun
 
 @defun remove-hook hook function &optional local