dotfiles/utils/truecolor-test

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#!/bin/sh
# https://github.com/termstandard/colors
awk -v term_cols="${width:-$(tput cols || echo 80)}" 'BEGIN{
s="/\\";
for (colnum = 0; colnum<term_cols; colnum++) {
r = 255-(colnum*255/term_cols);
g = (colnum*510/term_cols);
b = (colnum*255/term_cols);
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%2+1,1);
}
printf "\n";
}'