Variables expansion?

[lightglitch]

Support for ${key} or similar format in properties values and automatic expansion before getting the final value.

[pdalpra]

This would really useful, even behind a configuration option disabled by default.
Bonus, implementation is quite easy, thanks to os.ExpandEnv.

[eloo]

yes would be really great if this could be included..

for now i us e a simply workaround like this

	for _, k := range viper.AllKeys() {
		viper.Set(k, os.ExpandEnv(viper.GetString(k)))
	}

okay.. this is buggy...
now i'm trying the following at the moment

func expandConfig() {
	for _, k := range viper.AllKeys() {
		value := viper.Get(k)
		if _, ok := value.(string); ok {
			viper.Set(k, os.ExpandEnv(viper.GetString(k)))
		}
	}
}

[filinvadim]

@eloo thank you!