Re: Adjusting page length in "Print buffer" command

[Eli Zaretskii]

> From: Tim McNamara <timmcn@bitstream.net>
> Date: Sat, 15 Jan 2005 09:57:29 -0600
> 
> > Please see if any of the options mentioned in the doc string of
> > print-buffer help you get what you want:
> >
> >     print-buffer is an interactive autoloaded Lisp function in
> >     `lpr'.  It is bound to <menu-bar> <file> <print-buffer>.
> >     (print-buffer)
> >
> >     Paginate and print buffer contents.
> >
> >     The variable `lpr-headers-switches' controls how to paginate.
> >     If it is nil (the default), we run the `pr' program (or whatever
> >     program `lpr-page-header-program' specifies) to paginate.
> >     `lpr-page-header-switches' specifies the switches for that
> >     program.
> >
> >     Otherwise, the switches in `lpr-headers-switches' are used in
> >     the print command itself; we expect them to request pagination.
> >
> >     See the variables `lpr-switches' and `lpr-command' for further
> >     customization of the printer command.
> 
> I couldn't find this in Info, obviously looking in the wrong places.
> Where is it?

As I said, it's in the doc string of the print-buffer command.  Type
"C-h f print-buffer RET", and you will see it.  In Emacs, every
function and every variable have their documentation that is built
right into Emacs.

> So, I should be able to modify "lpr-headers-switches" to request a
> different pagination, from what your post suggests- in effect, to call
> "pr -l _lines_" when "print-buffer" is called?

Yes.

> Counting lines on the
> printed pages, it looks like I need to modify the pagination to a
> total of 50 or 51 lines.  Can I modify "lpr-headers-switches" to do
> this?  Is this done directly by modifying the command or is this done
> in my .emacs?

The latter.

> Is there a way to do this simply via "Customize Emacs" that I have
> overlooked?

Thru "Customize Emacs" should be possible.  Did it fail for you?

Another, a bit shorter, way is by "M-x customize-variable RET".  Type
"lpr-headers-switches" at the prompt, and then modify the value in the
Custom buffer and use the displayed buttons to save it for this and
future sessions.