Small fixes
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		@@ -122,13 +122,13 @@ void show_truecolor(const sc::term& t) {
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    // check for true color support
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    char* support = getenv("COLORTERM");
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    if (!support || support[0] == '\0') {
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        std::cerr << "no true color support\n";
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        std::cerr << "this terminal has no true color support\n";
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        return;
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    }
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    const char* lhb = u8"\u2584"; // lower half block
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    const double sat = 1.0;
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    for (double bri = 0; bri < 1; bri += 0.2) {
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        for (double hue = 0; hue < 360; hue += 360.0 / t.cols()) {
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        for (double hue = 0; hue < 359; hue += 360.0 / t.cols()) {
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            HSB hsbb = {hue, sat, bri};
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            Color bg {hsbb};
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            RGB rgbb = RGB(bg);
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