crayon (version 1.2.0)

has_color: Does the current R session support ANSI colors?

Description

Does the current R session support ANSI colors?

Usage

has_color()

Value

• TRUE if the current R session supports color.

Details

The following algorithm is used to detect ANSI support:

• If thecrayon.enabledoption is set toTRUEwithoptions(), thenTRUEis returned. If it is set to something else thanTRUE(typicallyFALSE), thenFALSEis returned.
• Otherwise, if the standard output is not a terminal, thenFALSEis returned.
• Otherwise, if the platform is Windows,FALSEis returned.
• Otherwise, if theCOLORTERMenvironment variable is set,TRUEis returned.
• Otherwise, if theTERMenvironment variable starts withscreen,xtermorvt100, or matchescolor,ansi,cygwinorlinux(with case insentive matching), thenTRUEis returned.
• OtherwiseFALSEis returned.

Examples

has_color()