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custom type `color' is not enforced

From: Drew Adams
Subject: custom type `color' is not enforced
Date: Sun, 2 Dec 2007 00:55:59 -0800

emacs -Q

(defcustom foo "White" "xxxxxxx" :type (quote color))

M-x customize-variable foo

In Customize, change the value to "any-non-color-string". You are able
to set the new value and even save it. There is no check done that the
value is actually a color - any string will do. The value should be
checked to ensure that it matches either a defined color name or "#"
followed by a multiple of three hex digits (for RGB).

In GNU Emacs 22.1.1 (i386-mingw-nt5.1.2600)
 of 2007-06-02 on RELEASE
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Ic:/gnuwin32/include'

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