Add advertised calling convention for redirect-frame-focus (Bug#12030).

* frame.c (Fredirect_frame_focus): In doc-string don't mention
that FOCUS-FRAME can be omitted.

* subr.el (redirect-frame-focus): Add advertised calling
convention (Bug#12030).

2 files changed, 7 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 2c82af88f93..1e9e65192f7 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2012-07-25  Martin Rudalics  <rudalics@gmx.at>
+
+        * frame.c (Fredirect_frame_focus): In doc-string don't mention
+        that FOCUS-FRAME can be omitted.
+
 2012-07-25  Dmitry Antipov  <dmantipov@yandex.ru>
 
         Adjust buffer text indirection counters at the end of Fkill_buffer.
diff --git a/src/frame.c b/src/frame.c
index bf2b180f2d3..07783bd8c07 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -1874,8 +1874,8 @@ In other words, switch-frame events caused by events in FRAME will
 request a switch to FOCUS-FRAME, and `last-event-frame' will be
 FOCUS-FRAME after reading an event typed at FRAME.
 
-If FOCUS-FRAME is omitted or nil, any existing redirection is
-canceled, and the frame again receives its own keystrokes.
+If FOCUS-FRAME is nil, any existing redirection is canceled, and the
+frame again receives its own keystrokes.
 
 Focus redirection is useful for temporarily redirecting keystrokes to
 a surrogate minibuffer frame when a frame doesn't have its own