Prevent usage of ':' in feature names. #95
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Utilizing ':' in feature names causes problems due to how the .NET Core configuration system treats this character. This can lead to confusing situations when a developer tries to check whether a feature name that contains a ':' character is enabled.
This PR updates the
ConfigurationFeatureDefinitionProviderto throw anArgumentExceptionif ':' is passed in with a feature name to prevent developers from hitting these issues. Custom implementations ofIFeatureDefinitionProviderare free to support features with ':'.#90