Variable: xscheme-running-p
xscheme-running-p is a buffer-local variable defined in xscheme.el.gz.
Documentation
If nil, the scheme process is waiting for input.
Otherwise, it is busy evaluating something.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/xscheme.el.gz
(defvar-local xscheme-running-p nil
"If nil, the scheme process is waiting for input.
Otherwise, it is busy evaluating something.")