- " [A-Za-z\xa0-\xff][A-Za-z\xa0-\xff][A-Za-z\xa0-\xff] [0-3 ][0-9]\
- [ 0-9][0-9][:0-9][0-9][ 0-9] "
- "Regular expression to match a month abbreviation followed date/time.")
+ (let* ((l "\\([A-Za-z]\\|[^\0-\177]\\)")
+ ;; In some locales, month abbreviations are as short as 2 letters,
+ ;; and they can be padded on the right with spaces.
+ (month (concat l l "+ *"))
+ ;; Recognize any non-ASCII character.
+ ;; The purpose is to match a Kanji character.
+ (k "[^\0-\177]")
+ ;; (k "[^\x00-\x7f\x80-\xff]")
+ (s " ")
+ (yyyy "[0-9][0-9][0-9][0-9]")
+ (mm "[ 0-1][0-9]")
+ (dd "[ 0-3][0-9]")
+ (HH:MM "[ 0-2][0-9]:[0-5][0-9]")
+ (western (concat "\\(" month s dd "\\|" dd s month "\\)"
+ s "\\(" HH:MM "\\|" s yyyy "\\|" yyyy s "\\)"))
+ (japanese (concat mm k s dd k s "\\(" s HH:MM "\\|" yyyy k "\\)")))
+ ;; Require the previous column to end in a digit.
+ ;; This avoids recognizing `1 may 1997' as a date in the line:
+ ;; -r--r--r-- 1 may 1997 1168 Oct 19 16:49 README
+ (concat "[0-9]" s "\\(" western "\\|" japanese "\\)" s))
+ "Regular expression to match up to the file name in a directory listing.
+The default value is designed to recognize dates and times
+regardless of the language.")