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-rw-r--r--src/pkg/encoding/json/decode.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/pkg/encoding/json/decode.go b/src/pkg/encoding/json/decode.go
index 610945022..1d723af12 100644
--- a/src/pkg/encoding/json/decode.go
+++ b/src/pkg/encoding/json/decode.go
@@ -33,6 +33,10 @@ import (
// the value pointed at by the pointer. If the pointer is nil, Unmarshal
// allocates a new value for it to point to.
//
+// To unmarshal JSON into a struct, Unmarshal matches incoming object
+// keys to the keys used by Marshal (either the struct field name or its tag),
+// preferring an exact match but also accepting a case-insensitive match.
+//
// To unmarshal JSON into an interface value, Unmarshal unmarshals
// the JSON into the concrete value contained in the interface value.
// If the interface value is nil, that is, has no concrete value stored in it,