fix: resolve #174 - fix regex for hyphenated tag names in HTML scanner

src/parser/htmlScanner.ts

@@ -172,7 +172,7 @@ export function createScanner(input: string, initialOffset = 0, initialState: Sc
 	let lastTypeValue: string | undefined;
 
 	function nextElementName(): string {
-		return stream.advanceIfRegExp(/^[_:\w][_:\w-.\d]*/).toLowerCase();
+		return stream.advanceIfRegExp(/^[_:\w][_:\w.\d-]*/).toLowerCase();
 	}
 
 	function nextAttributeName(): string {

src/test/scanner.test.ts

@@ -831,4 +831,49 @@ suite('HTML Scanner', () => {
 		}]);
 	});
 
+	test('Tag with Hyphenated Name (Vue custom element)', () => {
+		assertTokens([{
+			input: '<s-c-feature>content</s-c-feature>',
+			tokens: [
+				{ offset: 0, type: TokenType.StartTagOpen },
+				{ offset: 1, type: TokenType.StartTag, content: 's-c-feature' },
+				{ offset: 12, type: TokenType.StartTagClose },
+				{ offset: 13, type: TokenType.Content },
+				{ offset: 20, type: TokenType.EndTagOpen },
+				{ offset: 22, type: TokenType.EndTag, content: 's-c-feature' },
+				{ offset: 33, type: TokenType.EndTagClose }
+			]
+		}
+		]);
+	});
+
+	test('Self-closing Tag with Hyphenated Name', () => {
+		assertTokens([{
+			input: '<my-component />',
+			tokens: [
+				{ offset: 0, type: TokenType.StartTagOpen },
+				{ offset: 1, type: TokenType.StartTag, content: 'my-component' },
+				{ offset: 13, type: TokenType.Whitespace },
+				{ offset: 14, type: TokenType.StartTagSelfClose }
+			]
+		}
+		]);
+	});
+
+	test('Tag with Hyphenated Name and Attributes', () => {
+		assertTokens([{
+			input: '<el-button type="primary">',
+			tokens: [
+				{ offset: 0, type: TokenType.StartTagOpen },
+				{ offset: 1, type: TokenType.StartTag, content: 'el-button' },
+				{ offset: 10, type: TokenType.Whitespace },
+				{ offset: 11, type: TokenType.AttributeName },
+				{ offset: 15, type: TokenType.DelimiterAssign },
+				{ offset: 16, type: TokenType.AttributeValue },
+				{ offset: 25, type: TokenType.StartTagClose }
+			]
+		}
+		]);
+	});
+
 });