fix extra spaces resulting in invalid block params (#1577)

Author: patricklx

packages/@glimmer/syntax/lib/parser/tokenizer-event-handlers.ts

@@ -421,6 +421,7 @@ export class TokenizerEventHandlers extends HandlebarsNodeVisitors {
             );
           } else {
             state = { state: 'AfterEndPipe' };
+            this.tokenizer.consume();
           }
         } else if (next === '>' || next === '/') {
           throw generateSyntaxError(

packages/@glimmer/syntax/test/parser-node-test.ts

@@ -316,6 +316,25 @@ test('block with block params', () => {
   );
 });
 
+test('block with block params edge case: extra spaces', () => {
+  let t = `{{#foo as | bar bat baz |}}{{bar}} {{bat}} {{baz}}{{/foo}}`;
+
+  astEqual(
+    t,
+    b.template([
+      b.block(
+        b.path('foo'),
+        null,
+        null,
+        b.blockItself(
+          [b.mustache('bar'), b.text(' '), b.mustache('bat'), b.text(' '), b.mustache('baz')],
+          ['bar', 'bat', 'baz']
+        )
+      ),
+    ])
+  );
+});
+
 test('block with block params edge case: multiline', () => {
   let t = `{{#foo as
 |bar bat
@@ -389,6 +408,21 @@ test('element with block params', () => {
   );
 });
 
+test('element with block params edge case: extra spaces', () => {
+  let t = `<Foo as | bar bat baz |>{{bar}} {{bat}} {{baz}}</Foo>`;
+
+  astEqual(
+    t,
+    b.template([
+      element(
+        'Foo',
+        ['as', b.var('bar'), b.var('bat'), b.var('baz')],
+        ['body', b.mustache('bar'), b.text(' '), b.mustache('bat'), b.text(' '), b.mustache('baz')]
+      ),
+    ])
+  );
+});
+
 test('element with block params edge case: multiline', () => {
   let t = `<Foo as
 |bar bat