>>>>> On Mon, 11 Dec 2023, Eli Schwartz wrote:
>> + local color=yes
>> + [[ ${NO_COLOR} ]] && color=no
> [[ -v NO_COLOR ]]
No, this would give the wrong result if NO_COLOR is set to an empty
value. [[ ${NO_COLOR} ]] or [[ -n ${NO_COLOR} ]] is the correct test:
"Command-line software which adds ANSI color to its output by default
should check for a NO_COLOR environment variable that, when present
and not an empty string (regardless of its value), prevents the
addition of ANSI color." -- https://no-color.org/
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