Clarify reftex-extra-bindings docs.

* lisp/textmodes/reftex-vars.el (reftex-extra-bindings): Document that
the variable only has an effect at load-time.
* doc/misc/reftex.texi (Key Bindings): Ditto.

2 files changed, 5 insertions, 1 deletions

diff --git a/doc/misc/reftex.texi b/doc/misc/reftex.texi
index 726ec4e8521..01d5ad7b022 100644
--- a/doc/misc/reftex.texi
+++ b/doc/misc/reftex.texi
@@ -2893,6 +2893,9 @@ default.  If you want to have these key bindings available, set in your
 (setq reftex-extra-bindings t)
 @end lisp
 
+Note that this variable has to be set before @RefTeX{} is loaded to
+have an effect.
+
 @vindex reftex-load-hook
 Changing and adding to @RefTeX{}'s key bindings is best done in the hook
 @code{reftex-load-hook}.  For information on the keymaps
diff --git a/lisp/textmodes/reftex-vars.el b/lisp/textmodes/reftex-vars.el
index 482dd4c6396..357a0938e6a 100644
--- a/lisp/textmodes/reftex-vars.el
+++ b/lisp/textmodes/reftex-vars.el
@@ -1991,7 +1991,8 @@ symbol indicating in what context the hook is called."
 
 (defcustom reftex-extra-bindings nil
   "Non-nil means, make additional key bindings on startup.
-These extra bindings are located in the users `C-c letter' map."
+These extra bindings are located in the users `C-c letter' map.
+Note that this variable needs to be set before reftex is loaded."
   :group 'reftex-miscellaneous-configurations
   :type 'boolean)