Terminal queries do not work correctly in Windows

[erikgeiser]

On Windows, the query functionality also returns the same incorrect values. This is because the query functions for Windows return hardcoded values. The new Windows Terminal may soon support queries as discussed in microsoft/terminal#3718. In the meantime, it should be documented that the query functions return dummy values on Windows.

This can be tested with the following code:

package main

import (
	"fmt"

	"github.com/muesli/termenv"
)

func profileName(profile termenv.Profile) string {
	switch profile {
	case termenv.Ascii:
		return "ASCII"
	case termenv.ANSI:
		return "ANSI"
	case termenv.ANSI256:
		return "ANSI256"
	case termenv.TrueColor:
		return "TrueColor"
	default:
		return "Unknown"
	}
}
func main() {
	fg := termenv.ForegroundColor()
	fgRGB := termenv.ConvertToRGB(fg)
	fgH, fgS, fgL := fgRGB.Hsl()

	bg := termenv.BackgroundColor()
	bgRGB := termenv.ConvertToRGB(bg)
	bgH, bgS, bgL := bgRGB.Hsl()

	fmt.Printf("Profile: %s\n", profileName(termenv.ColorProfile()))
	fmt.Printf("HasDarkBackground: %v\n", termenv.HasDarkBackground())
	fmt.Println()

	fmt.Printf("ForegroundColor:    %v\n", fg)
	fmt.Printf("ForegroundColorRGB: (%f, %f, %f)\n", fgRGB.R, fgRGB.G, fgRGB.B)
	fmt.Printf("ForegroundColorHSL: (%f, %f, %f)\n", fgH, fgS, fgL)
	fmt.Println()

	fmt.Printf("BackgroundColor:    %v\n", bg)
	fmt.Printf("BackgroundColorRGB: (%f, %f, %f)\n", bgRGB.R, bgRGB.G, bgRGB.B)
	fmt.Printf("BackgroundColorHSL: (%f, %f, %f)\n", bgH, bgS, bgL)
}

Windows Terminal

Tango Dark

Tango Light

Powershell in native Window

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