is_minibuffer    4826 src/lisp.h     extern bool is_minibuffer (EMACS_INT, Lisp_Object);
is_minibuffer    2750 src/window.c   		       || !is_minibuffer (0, XWINDOW (all_frames)->contents)));
is_minibuffer    33294 src/xdisp.c               || is_minibuffer (0, w->contents)))