Windows Subsystem for Linux support about clipboard

[e-zk]

This is what I've done in the past to get around this: https://github.com/e-zk/cpass/blob/master/main.go#L53

Checking the version string in /proc for "microsoft-standard"¹ may not be the most robust solution for checking whether the distro is WSL.

Footnotes

1. https://github.com/e-zk/wslcheck/blob/main/wslcheck_unix.go ↩

[mikutas]

This works better with WSL
https://github.com/golang-design/clipboard

[k1ng440]

not pretty but this is just an one minute hack

	var clipPath string
	if _, err := os.Stat("/c/Windows/system32/clip.exe"); !os.IsNotExist(err) {
		clipPath = "/c/Windows/system32/clip.exe"
	} else if _, err := os.Stat("/mnt/c/Windows/system32/clip.exe"); !os.IsNotExist(err) {
		clipPath = "/mnt/c/Windows/system32/clip.exe"
	} else

	p := fmt.Sprintf("Bearer %s\n", re.IdToken)
	if clipPath != "" {
		sh.Run("bash", "-c", fmt.Sprintf("echo '%s' | %s", p, clipPath))
	}
```

[tomasaschan]

I'm tempted to take a stab at this; hub also uses this library.

@atotto Would a PR that looks for clip.exe on Linux be accepted (assuming code quality is OK etc, of course)?

[AnomalRoil]

This would also solve gopasspw/gopass#1664 on our side 👍