Variable: mode-line-process
mode-line-process is a buffer-local variable defined in
bindings.el.gz.
Documentation
Mode line construct for displaying info on process status.
Normally nil in most modes, since there is no process to display.
Probably introduced at or before Emacs version 18.
Source Code
;; Defined in /usr/src/emacs/lisp/bindings.el.gz
(defvar-local mode-line-process nil
"Mode line construct for displaying info on process status.
Normally nil in most modes, since there is no process to display.")