Re: ps-print doesn't omit invisible text

["Robert Thorpe" <rthorpe@realworldtech.com>]

John Halton wrote:
> I'm using an emacs mode (tagging.el) that uses invisible overlays to
> hide text that doesn't match a given tag (a la folding.el).
>
> However, when I print out the buffer, I get the whole buffer including
> invisible text, not just the text displaying on screen. By contrast,
> quick print via web browser (from the File menu) only prints out the
> visible text.
>
> Looking at the ps-print.el file, it looks like ps-print does have the
> ability to skip invisible text when printing, but I'm too much of a
> LISP ignoramus to understand why it should be failing to do so in this
> instance.
>
> I'm running Emacs 22.0.91.1 under Windows (work PC...), installed from
> EmacsW32. However, the same issue also occurs in Emacs 21.

If the result of ps-print-buffer is different from that of print-buffer
then this is an Emacs bug and should be reported.

If not it may be a bug in "tagging.el" using odd ways to make things
invisible.