;; which matches your prompt up to and including the pathname part.
;; The second is a number which tells which regular expression group to
;; match to extract only the pathname. If you use a multi-line prompt,
-;; add 't' as a third element. Note that some of the functions in
+;; add t as a third element. Note that some of the functions in
;; 'comint.el' assume a single-line prompt (eg, comint-bol).
;;
;; Determining this information may take some experimentation. Using