+@defun read-char-exclusive &optional prompt inherit-input-method
+This function reads and returns a character of command input. If the
+user generates an event which is not a character,
+@code{read-char-exclusive} ignores it and reads another event, until it
+gets a character. The arguments work as in @code{read-event}.
+@end defun
+
+@node Invoking the Input Method
+@subsection Invoking the Input Method
+
+ The event-reading functions invoke the current input method, if any
+(@pxref{Input Methods}). If the value of @code{input-method-function}
+is non-@code{nil}, it should be a function; when @code{read-event} reads
+a printing character (including @key{SPC}) with no modifier bits, it
+calls that function, passing the character as an argument.
+
+@defvar input-method-function
+If this is non-@code{nil}, its value specifies the current input method
+function.
+
+@strong{Warning:} don't bind this variable with @code{let}. It is often
+buffer-local, and if you bind it around reading input (which is exactly
+when you @emph{would} bind it), switching buffers asynchronously while
+Emacs is waiting will cause the value to be restored in the wrong
+buffer.
+@end defvar
+
+ The input method function should return a list of events which should
+be used as input. (If the list is @code{nil}, that means there is no
+input, so @code{read-event} waits for another event.) These events are
+processed before the events in @code{unread-command-events}
+(@pxref{Event Input Misc}). Events
+returned by the input method function are not passed to the input method
+function again, even if they are printing characters with no modifier
+bits.
+
+ If the input method function calls @code{read-event} or
+@code{read-key-sequence}, it should bind @code{input-method-function} to
+@code{nil} first, to prevent recursion.
+
+ The input method function is not called when reading the second and
+subsequent events of a key sequence. Thus, these characters are not
+subject to input method processing. The input method function should
+test the values of @code{overriding-local-map} and
+@code{overriding-terminal-local-map}; if either of these variables is
+non-@code{nil}, the input method should put its argument into a list and
+return that list with no further processing.
+