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log: Do not assume the TERM variable is always set
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@ -74,7 +74,7 @@ static void check_color_terminal(void)
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char *term = getenv("TERM");
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use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&
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(getenv("TERM") && isatty(2) || getenv("AV_LOG_FORCE_COLOR"));
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use_color += !!strstr(term, "256color") ;
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use_color += term && strstr(term, "256color");
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#else
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use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&
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!getenv("AV_LOG_FORCE_NOCOLOR");
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