all: fix docstrings

rlp/encbuffer.go

@@ -381,7 +381,7 @@ func (w EncoderBuffer) WriteBytes(b []byte) {
 	w.buf.writeBytes(b)
 }
 
-// WriteBytes encodes s as an RLP string.
+// WriteString encodes s as an RLP string.
 func (w EncoderBuffer) WriteString(s string) {
 	w.buf.writeString(s)
 }

rlp/encode.go

@@ -29,8 +29,11 @@ import (
 var (
 	// Common encoded values.
 	// These are useful when implementing EncodeRLP.
+
+	// EmptyString is the encoding of an empty string.
 	EmptyString = []byte{0x80}
-	EmptyList   = []byte{0xC0}
+	// EmptyList is the encoding of an empty list.
+	EmptyList = []byte{0xC0}
 )
 
 var ErrNegativeBigInt = errors.New("rlp: cannot encode negative big.Int")

rlp/internal/rlpstruct/rlpstruct.go

@@ -44,7 +44,7 @@ type Type struct {
 	Elem      *Type // non-nil for Kind values of Ptr, Slice, Array
 }
 
-// defaultNilValue determines whether a nil pointer to t encodes/decodes
+// DefaultNilValue determines whether a nil pointer to t encodes/decodes
 // as an empty string or empty list.
 func (t Type) DefaultNilValue() NilKind {
 	k := t.Kind