Variable: input-method-history
input-method-history is a buffer-local variable defined in
mule-cmds.el.gz.
Documentation
History list of input methods read from the minibuffer.
Maximum length of the history list is determined by the value
of history-length, which see.
Source Code
;; Defined in /usr/src/emacs/lisp/international/mule-cmds.el.gz
(defvar-local input-method-history nil
"History list of input methods read from the minibuffer.
Maximum length of the history list is determined by the value
of `history-length', which see.")