(Debugger Commands): Mention that the Lisp debugger can not step

through primitive functions.

1 files changed, 2 insertions, 1 deletions

diff --git a/lispref/debugging.texi b/lispref/debugging.texi
index 739dd1fe298..75be0462d66 100644
--- a/lispref/debugging.texi
+++ b/lispref/debugging.texi
@@ -350,7 +350,8 @@ structures of an interpreted function, but cannot do so in a
 byte-compiled function.  If you would like to step through a
 byte-compiled function, replace it with an interpreted definition of
 the same function.  (To do this, visit the source for the function and
-type @kbd{C-M-x} on its definition.)
+type @kbd{C-M-x} on its definition.)  You can not use the Lisp debugger
+to step through a primitive function.
 
   Here is a list of Debugger mode commands: