file-modes-char-to-right
file-modes-char-to-right is a compiled Lisp function in `files.el
'.
(file-modes-char-to-right CHAR &optional FROM)
Convert CHAR to a numeric value of mode bits.
CHAR is in [rwxXstugo] and represents symbolic access permissions.
If CHAR is in [Xugo], the value is taken from FROM (or 0 if omitted).