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====== VIM - Config - Color Tests ======

<code bash>
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";
}'
</code>

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Tests bold, italic, blink, overline, underline (undercurl), and true color support for foreground, background, and the underline.

<code bash>
echo -ne \\e\[1\;3\;4:3\;5\;53\;38\;2\;255\;127\;0\;58\;2\;0\;48\;255\;48\;2\;255\;0\;{0..255..8}mX \\e\[0m\\n
</code>

----

===== References =====

https://gist.github.com/XVilka/8346728