pr-list-directory

pr-list-directory is a variable defined in `printing.el'.
Its value is

nil

Documentation:
Non-nil means list directory when processing a directory.

That is, any subdirectories (and the superdirectory) of the directory (given as
argument of functions below) are also printed (as dired-mode listings).

It's used by `pr-ps-directory-preview', `pr-ps-directory-using-ghostscript',
`pr-ps-directory-print', `pr-ps-directory-ps-print', `pr-printify-directory'
and `pr-txt-directory'.

You can customize this variable.