Variable: prolog-trace-on-string
prolog-trace-on-string is a customizable variable defined in
prolog.el.gz.
Value
"trace.\n"
Documentation
Predicate for enabling tracing.
This variable was added, or its default value changed, in Emacs 24.1.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/prolog.el.gz
(defcustom prolog-trace-on-string "trace.\n"
"Predicate for enabling tracing."
:version "24.1"
:group 'prolog-inferior
:type 'string)