Variable: dired-sort-by-name-regexp
dired-sort-by-name-regexp is a variable defined in dired.el.gz.
Value
"\\`\\(\\(\\`\\| +\\)\\(--[^ ]+\\|-[^- tSXU]+\\)\\)* *$"
Documentation
Regexp recognized by Dired to set by name mode.
Source Code
;; Defined in /usr/src/emacs/lisp/dired.el.gz
(defvar dired-sort-by-name-regexp
(concat "\\`\\(\\(\\`\\| +\\)\\(--[^ ]+\\|"
"-[^- t" dired-ls-sorting-switches "]+\\)\\)* *$")
"Regexp recognized by Dired to set `by name' mode.")