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ps-default-bg shouldn't be used for printing by default

From: Christian Schlauer
Subject: ps-default-bg shouldn't be used for printing by default
Date: Thu, 05 Jul 2007 22:22:43 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)

,----[ C-h v ps-default-bg RET ]
| ps-default-bg is a variable defined in `ps-print.el'.
| Its value is frame-parameter


| The `ps-default-bg' variable contains the default background color
| used by ps-print, that is, if there is a face in a text that doesn't
| have a background color, the `ps-default-bg' color should be used.


| It's used only when `ps-print-color-p' is non-nil.



`ps-print-color-p' is t by default -- that means that the background
colour of my frame will be printed when I use M-x

The problem is that ink jet printers today are mostly colour ink jet
printers, and even if I want the faces of a buffer to appear in colour
on paper, I am not interested in the background colour of the frame.
It is a waste of ink and _time_ as it takes much longer to print the
pages (the same holds for colour laser printers: a waste of toner and

My proposal: change the default of `ps-default-bg' to white colour or
some equivalent expression.

FWIW, the Firefox web browser doesn't print the background colours or
background images of web pages by default: have a look in File -> Page
Setup... -> Format & Options: the "Print background (colours &
images)" option is _not_ checked by default. That's very sensible.
This would make sense for Emacs, too -- I guess many people choose
another background colour for their Emacs frames than white. I use
`ivory', for example.

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