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N.1. When Color is Used

To use colorized output, set the environment variable PG_COLOR as follows:

If the value is always, then color is used.
If the value is auto and the standard error stream is associated with a terminal device, then color is used.
Otherwise, color is not used.

To use colorized output, set the environment variable PG_COLOR as follows:

If the value is always, then color is used.
If the value is auto and the standard error stream is associated with a terminal device, then color is used.
Otherwise, color is not used.