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

 From: Sébastien Miquel Subject: Re: `-bg Transparent` option isn't ignored when background color is set in dvi file Date: Mon, 17 May 2021 21:30:25 +0000

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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."
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"Transparent" doesn't change the background color, it enables the alpha channel.
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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.
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Did you want this to work differently, or was the problem that you were surprised by the behavior?
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Some time ago, a change in org-mode (emacs package) introduced a bug because this behavior was unexpected.
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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.
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I assume there's no way to get dvipng to behave like this ?

Regards,

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Sébastien Miquel

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