Re: Ansi-color uses the same values for fore- and background colours

[Tony Zorman]

On Wed, Aug 09 2023 16:28, Eli Zaretskii wrote:
>> From: Tony Zorman <tonyzorman@mailbox.org>
>> Date: Wed, 09 Aug 2023 14:10:44 +0200
>> 
>> by default, all of the `ansi-color-«COLOUR»' faces (defined in
>> `ansi-color.el') set the foreground and background colour to the exact
>> same value.
>
> I believe this is intentional: that's how ANSI SGR sequences work on
> terminals, right?

I'm a bit rusty with my escape sequences; they don't hard-code colours,
right? I thought that e.g. `ESC[31m' just means "colour the foreground
on some kind of red", `ESC[41m' means the same for the background, and
then the terminal interprets this appropriately. Is there actually some
standard that says these two colours have to be the same, or am I
missing some other detail? I suppose terminals implementing this could
choose to use the same value for both colours, and maybe most of them
did.

Either way, I guess the modus-themes shouldn't run into any issues when
diverging from this.

Thanks!

-- 
Tony Zorman | https://tony-zorman.com/