Re: `-bg Transparent` option isn't ignored when background color is set in dvi file

[Sébastien Miquel]

Jan-Åke Larsson writes:
> That was intended, yes, the manual should probably have said "The 
> background color given will be ignored if there is a background color 
> \special in the DVI."
>
> "Transparent" doesn't change the background color, it enables the 
> alpha channel.
>
> The actual background color (visible, say, in a reader without the 
> alpha channel) is controlled by the color spec, and overridden by a 
> color \special.

Thank you for your reply and the explanation.

> Did you want this to work differently, or was the problem that you 
> were surprised by the behavior?

Some time ago, a change in org-mode (emacs package) introduced a bug 
because this behavior was unexpected.

Org-mode uses latex > dvipng to generate images to be included in an 
emacs buffer. If the user specifies a background color, it is set using 
the latex commands, otherwise the image should be transparent.


I assume there's no way to get dvipng to behave like this ?

Regards,

--
Sébastien Miquel