refine blocks detection

src/parser.ts

@@ -233,6 +233,9 @@ export class EftlParser {
             case TokenType.VALUE_OF:
             case TokenType.SIZE_OF:
             case TokenType.HEADER:
+                if (!token.value.endsWith('/]')) {
+                    this.pushBlock(token);
+                }
                 this.advance();
                 break;
 
@@ -249,6 +252,9 @@ export class EftlParser {
     }
 
     private pushBlock(token: Token): void {
+        if (token.value.endsWith('/]')) {
+            return; // It's self-closing, don't push to stack
+        }
         this.blockStack.push({ type: token.type, token });
     }
 
@@ -295,6 +301,9 @@ export class EftlParser {
             [TokenType.TRIM_OPEN]: '[/TRIM]',
             [TokenType.CONTAINS_OPEN]: '[/CONTAINS]',
             [TokenType.FORMAT_OPEN]: '[/FORMAT]',
+            [TokenType.VALUE_OF]: '[/VALUE_OF]',
+            [TokenType.SIZE_OF]: '[/SIZE_OF]',
+            [TokenType.HEADER]: '[/HEADER]',
             [TokenType.EXPR_OPEN]: '%]',
             [TokenType.EXPR_OUTPUT_OPEN]: '%]',
             [TokenType.COMMENT_OPEN]: '--]'

src/tokenizer.ts

@@ -298,7 +298,7 @@ export class EftlTokenizer {
 
     private scanVarOpen(startLine: number, startColumn: number): void {
         let value = '[VAR';
-        // Scan until we find ] or ]
+        // Scan until we find ]
         while (this.pos < this.source.length && this.peek() !== ']') {
             value += this.advance();
         }
@@ -328,13 +328,7 @@ export class EftlTokenizer {
                 break;
             }
             if (ch === ']') {
-                // Not self-closing, error
-                this.errors.push({
-                    message: `Expected self-closing tag: [${tagName} ... /]`,
-                    line: startLine,
-                    column: startColumn,
-                    length: value.length
-                });
+                // Could be block start, let parser handle it if it's supposed to be self-closing
                 break;
             }
         }