increase maximum size of attribute name from 15 characters to 128 - f…

…ixes #15

elementparser.go

@@ -62,7 +62,7 @@ var attributeNameFirst = "abcdefghijklmnopqrstuvwxyz"
 var attributeNameSubsequent = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-"
 var attributeNameParser = parse.Then(parse.WithStringConcatCombiner,
 	parse.RuneIn(elementNameFirst),
-	parse.Many(parse.WithStringConcatCombiner, 0, 15, parse.RuneIn(elementNameSubsequent)),
+	parse.Many(parse.WithStringConcatCombiner, 0, 128, parse.RuneIn(elementNameSubsequent)),
 )
 
 // Constant attribute.

elementparser_test.go

@@ -60,6 +60,24 @@ func TestAttributeParser(t *testing.T) {
 				Value: "test",
 			},
 		},
+		{
+			name:   "attribute name with hyphens",
+			input:  ` data-turbo-permanent="value"`,
+			parser: newConstantAttributeParser().Parse,
+			expected: ConstantAttribute{
+				Name:  "data-turbo-permanent",
+				Value: "value",
+			},
+		},
+		{
+			name:   "empty attribute",
+			input:  ` data=""`,
+			parser: newConstantAttributeParser().Parse,
+			expected: ConstantAttribute{
+				Name:  "data",
+				Value: "",
+			},
+		},
 		{
 			name:   "attribute containing escaped text",
 			input:  ` href="<">"`,