Richard Stallman wrote:
4. start new Emacs session
5. type: C-h v ps-default-bg RET
==>> "#ffffff" (white)
That is quite strange, because when I do emacs -Q and
C-h v ps-default-bg RET it says that variable isn't defined.
I wonder, have you done something to cause ps-print to be preloaded?
Well, the ps-print commands have a comment:
;;;###autoload
just before the command definition.
When I start Emacs with -Q, typing C-h v ps- TAB appears some options
to complete but ps-default-bg is not among them, only
ps-multibyte-buffer, ps-page-dimensions-database, ps-paper-type and
ps-print-color-p. And these options have the comment ";;;###autoload"
just before the variable definition.
2. set in emacs/lisp/ps-print.el file:
(defcustom ps-default-bg (frame-parameter nil 'background-color))
Please try this:
(defcustom ps-default-bg (progn (debug) (frame-parameter nil
'background-color)))
Then you will go into the debugger when that initialization gets run,
and you can see when it gets done, and what code runs it.
Humm, trying the initialization above, I can see that ps-print is loaded
before .emacs file is loaded. So, the background is white when ps-print
is loaded and, only during .emacs loading, the background is changed.
> If the variables have a value (let's say, 'frame-parameter), the value
> of them is calculated when any ps-print command is activated. And it's
> used frame-parameter function to get the color value.
>
With your explanation, I now understand that idea, and I think it is a
good one.
Ok, could I implement it now in Emacs 22 before the release?
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