note

Signed-off-by: Owen Williams <owen.williams@grafana.com>

Author: ywwg

expfmt/decode.go

@@ -72,10 +72,11 @@ func ResponseFormat(h http.Header) Format {
 
 // NewDecoder returns a new decoder based on the given input format. Supported
 // formats include delimited protobuf, text protos, and Prometheus text format.
-// This decoder does not fully support OpenMetrics although it may often succeed
-// due to the similarities between the formats. This decoder may not support the
-// latest features of Prometheus text format and is not intended for
-// high-performance applications. See:
+// For historical reasons, this decoder fallbacks to classic text decoding for
+// any other format. This decoder does not fully support OpenMetrics although it
+// may often succeed due to the similarities between the formats. This decoder
+// may not support the latest features of Prometheus text format and is not
+// intended for high-performance applications. See:
 // https://github.com/prometheus/common/issues/812
 func NewDecoder(r io.Reader, format Format) Decoder {
 	scheme := model.LegacyValidation