Variable: dired-subdir-regexp
dired-subdir-regexp is a variable defined in dired.el.gz.
Value
"^. \\(.+\\)\\(:\\)\n"
Documentation
Regexp matching a maybe hidden subdirectory line in ls -lR output.
Subexpression 1 is the subdirectory proper, no trailing colon. The match starts at the beginning of the line and ends after the end of the line. Subexpression 2 must end right before the \n.
Source Code
;; Defined in /usr/src/emacs/lisp/dired.el.gz
(defvar dired-subdir-regexp "^. \\(.+\\)\\(:\\)\n"
"Regexp matching a maybe hidden subdirectory line in `ls -lR' output.
Subexpression 1 is the subdirectory proper, no trailing colon.
The match starts at the beginning of the line and ends after the end
of the line.
Subexpression 2 must end right before the \\n.")