feat(output): set default global output

output.go

@@ -55,6 +55,11 @@ func DefaultOutput() *Output {
  return output
 }
 
+// SetDefaultOutput sets the default global output.
+func SetDefaultOutput(o *Output) {
+ output = o
+}
+
 // NewOutput returns a new Output for the given file descriptor.
 func NewOutput(tty io.Writer, opts ...OutputOption) *Output {
  o := &Output{

termenv.go

@@ -88,11 +88,13 @@ func EnvColorProfile() Profile {
  return output.EnvColorProfile()
 }
 
-// EnvNoColor returns true if the environment variables explicitly disable color output
-// by setting NO_COLOR (https://no-color.org/)
-// or CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
-// If NO_COLOR is set, this will return true, ignoring CLICOLOR/CLICOLOR_FORCE
-// If CLICOLOR=="0", it will be true only if CLICOLOR_FORCE is also "0" or is unset.
+// EnvColorProfile returns the color profile based on environment variables set
+// Supports NO_COLOR (https://no-color.org/)
+// and CLICOLOR/CLICOLOR_FORCE (https://bixense.com/clicolors/)
+// If none of these environment variables are set, this behaves the same as ColorProfile()
+// It will return the Ascii color profile if EnvNoColor() returns true
+// If the terminal does not support any colors, but CLICOLOR_FORCE is set and not "0"
+// then the ANSI color profile will be returned.
 func (o *Output) EnvColorProfile() Profile {
  if o.EnvNoColor() {
  return Ascii