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bug#4033: 23.1; list-colors-display is misleading

From: Juri Linkov
Subject: bug#4033: 23.1; list-colors-display is misleading
Date: Wed, 05 Aug 2009 00:35:12 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (x86_64-pc-linux-gnu)

> I have had at least one user state that he thought that, since the
> form shown is #RRGGBB, his colors had only that granularity.  IOW,
> even if one's system allows colors of the form #RRRRGGGGBBBB (more
> colors), the color names are translated to hex strings of the form
> #RRGGBB (fewer colors).

Could you show a formula that calculates the color granularity?

We could use it to print colors in the short format #RRGGBB
for the smaller color space and #RRRRGGGGBBBB otherwise.

Juri Linkov

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