Re: prompt colors bug? also possible feature add

[Jim <linux.tech.guy@gmail.com>]

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On Wed, Aug 23, 2023 at 10:45 PM Bart Schaefer <schaefer@brasslantern.com>
wrote:

> On Wed, Aug 23, 2023 at 5:42 AM Jim <linux.tech.guy@gmail.com> wrote:
> >
> > The more I look into "functions/Prompts" and especially *fade and fire
> there is no
> > change in color intensity or the use of "gray".
>
> prompt_fade_setup:    prompt_preview_theme fade white grey blue
> prompt_bigfade_setup:    prompt_preview_theme bigfade red white grey white
>
> "colors" defines "grey" so as not to break those preview defaults, and
> defines "gray" because some people spell differently.
>
> > When grey is
> > specified, the color defaults to the default color of the virtual
> terminal you are using.
>
> I think that's because the virtual terminal is overriding "black".
> Both gray and grey are defined as being identical to black.  Only the
> xterm extended "bright" variants are actually gray.
>

First, I'm no C programmer so I could have missed something. I knew enough
C to allow
me to be a Unix/Linux system administrator and install patches and to
occasionally gen
my own patch, when needed. Looking through prompt.c I find the following:

/* Defines standard ANSI colour names in index order */
static const char *ansi_colours[] = {
    "black", "red", "green", "yellow", "blue", "magenta", "cyan", "white",
    "default", NULL
};

Grey/gray aren't defined as far as "I" can tell, anywhere. Should it?
That is for someone who knows more about this than I do.

But what is more interesting, it appears that prompt doesn't depend on
the "colors" function.

I commented out my prompt code in my .zshrc file.
Opened a new terminal.

% unset fg bg fg_bold  # cleared all colors associative arrays
% print -- ${fg[yellow]}This is a test  # outputs the terminal's default
color not yellow

Initiated prompts:
% autoload -Uz promptinit && promptinit
% prompt adam2

Ran several tests using:

% prompt_preview_theme fade <color1> <color2> <color3>

Substituted different color names for <colorN>

Prompt outputs all colors as defined in prompt.c.
Did not include gray/grey.

What is also interesting, prompt can output all colors defined by "number"
instead of a color name. e.g. 1 for red 9 for bright-red ...
The linux console will output colors 0..15
All virtual terminals(that I tested) outputs all 256 colors:  0..255

Anyway, just passing on what I found.

Regards,

Jim

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