GNU bug report logs - #5683
23.1.93; list-colors-display doesn't show all colors

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Message #14 received at 5683 <at> debbugs.gnu.org (full text, mbox):

From: Markus Prepens <markus.prepens <at> googlemail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 5683 <at> debbugs.gnu.org
Subject: Re: bug#5683: 23.1.93; list-colors-display doesn't show all colors
Date: Sat, 06 Mar 2010 23:07:19 +0100

When I evaluate (defvar my-x-colors (ns-list-colors)) the complete color 
list is put to my-x-colors.

I think your impression is right: The code is correct, but the calling 
order during startup might be the problem. Maybe this is a hint:

Step 1: Startup Emacs with the -Q switch
Step 2: Enter M-: (setq x-colors (ns-list-colors))
Step 3: Enter M-x list-colors-display and the complete list of all 
colors appears in the *Colors* buffer.

Without step 1 and 2 the *Colors* buffer shows only 37 colors.

I make further investigations, what is going on.

Any hints are welcome ...

Markus

On 06/03/2010 10:01, Eli Zaretskii wrote:
> [Please don't drop 5683 <at> debbugs.gnu.org from the list of addressees,
> so that the history of this bug is archived on the bug tracker, and
> also so others could chime in to this discussion.]
>
>> Date: Fri, 05 Mar 2010 22:57:19 +0100
>> From: Markus Prepens<markus.prepens <at> googlemail.com>
>>
>> Function defined-colors seems to cause the trouble.  I stepped down the
>> code to xw-defined-colors in file ns-win.el. It uses the list x-colors.
>> It contains only 42 colors.
>>
>> x-colors is initialized with the return value of ns-list-colors:
>>
>> (defvar x-colors (ns-list-colors)
>>
>> What I am wondering about is that ns-list-colors returns a correct list
>> of 794 colors.
>>
>> What is wrong with the assignment of (ns-list-colors) to x-colors?
>
> Nothing's wrong.  I suspect that some code modifies x-colors after it
> is assigned.  Can you see if evaluating the following form
>
>    (defvar my-x-colors (ns-list-colors))
>
> puts the full 794-color list in my-x-colors?  (To evaluate the
> expression, put the cursor immediately after the right parenthesis and
> type "C-x C-e".)

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