bug#54263: 29.0.50; color-values-from-color-spec accepts whitespace in rgbi: specifications

[Mattias Engdegård]

6 mars 2022 kl. 11.45 skrev Philip Kaludercic <philipk@posteo.net>:

>  (should (equal (color-values-from-color-spec "rgbi:0/0/0x0") nil))
> 
> should be accepted or not.  From looking at xfaces-tests.el I was
> surprised to see that the exponential notation was intentional, but
> there was no comment or test on the un-lispy 0x... notation that strtod
> allows.

We could disallow hex floats (such as 0x1 or 0XDEFP-16) too, but whether they 
are un-lispy or not should have no bearing on our decision because we are 
parsing an external representation that doesn't come from the Lisp world.

Finding an authoritative source for the rgbi: format proved elusive but it 
doesn't seem that X11 or NS allow hex floats so let's reject them. New patch 
attached.

0001-Don-t-accept-whitespace-or-hex-floats-in-rgbi-colour.patch
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