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pastel pick doesn't display all colors #121

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nycex opened this issue Apr 5, 2020 · 4 comments
Open

pastel pick doesn't display all colors #121

nycex opened this issue Apr 5, 2020 · 4 comments
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bug good first issue

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@nycex
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@nycex nycex commented Apr 5, 2020

When I run pastel pick in st or urxvt, i get a output like output_image
even though when running this:

awk 'BEGIN{
    s="/\\/\\/\\/\\/\\"; s=s s s s s s s s;
    for (colnum = 0; colnum<77; colnum++) {
        r = 255-(colnum*255/76);
        g = (colnum*510/76);
        b = (colnum*255/76);
        if (g>255) g = 510-g;
        printf "\033[48;2;%d;%d;%dm", r,g,b;
        printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
        printf "%s\033[0m", substr(s,colnum+1,1);
    }
    printf "\n";
}'

from https://gist.github.com/XVilka/8346728, I get a smooth gradient:
gradient_image
In alacritty, it seems to work though:
alacritty_output_image
@sharkdp
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@sharkdp sharkdp commented Apr 5, 2020

It appears that urxvt does not set the COLORTERM variable to truecolor, which is the only way how we can detect that a terminal emulator supports 24bit colors.

If you run pastel colorcheck, you should be able to clearly determine whether or 24bit is supported.
@sharkdp
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@sharkdp sharkdp commented Apr 5, 2020

Don't you see a warning in the top output of pastel pick?

image
@nycex
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@nycex nycex commented Apr 5, 2020 •
edited

Well, I saw the warning and set the environment variable PASTEL_COLOR_MODE=24bit. With this enabled, I get the output in st and urxvt I showed earlier. But now that I tried, when I set COLORTERM=24bit or COLORTERM=truecolor, then it shows correctly all the colors like in alacritty. Maybe there is a problem with the check for PASTEL_COLOR_MODE

Edit: Btw it just works for st, I just looked into it and urxvt doesn't even support truecolor to my surprise.
@sharkdp
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@sharkdp sharkdp commented Apr 5, 2020 •
edited

Maybe there is a problem with the check for PASTEL_COLOR_MODE

It looks like there is, yes. I can reproduce it. Thank you for reporting this!

(Unrelated: in general, I suggest using a terminal which properly sets COLORTERM. This will also enable true color support in many other programs).
@sharkdp sharkdp added the bug label Apr 5, 2020
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Labels
bug good first issue
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@sharkdp @nycex
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