Do not reparse token tree when it is not delimited by braces

2 files changed, 6 insertions, 1 deletions

diff --git a/crates/libsyntax2/src/lib.rs b/crates/libsyntax2/src/lib.rs
index 74e8e7338..fd58cb4fa 100644
--- a/crates/libsyntax2/src/lib.rs
+++ b/crates/libsyntax2/src/lib.rs
@@ -149,7 +149,7 @@ fn find_reparsable_node(node: SyntaxNodeRef, range: TextRange) -> Option<(Syntax
             MATCH_ARM_LIST => grammar::match_arm_list,
             USE_TREE_LIST => grammar::use_tree_list,
             EXTERN_ITEM_LIST => grammar::extern_item_list,
-            TOKEN_TREE => grammar::token_tree,
+            TOKEN_TREE if node.first_child().unwrap().kind() == L_CURLY => grammar::token_tree,
             ITEM_LIST => {
                 let parent = node.parent().unwrap();
                 match parent.kind() {
diff --git a/crates/libsyntax2/tests/test/main.rs b/crates/libsyntax2/tests/test/main.rs
index 24058efa9..644df9f3c 100644
--- a/crates/libsyntax2/tests/test/main.rs
+++ b/crates/libsyntax2/tests/test/main.rs
@@ -85,6 +85,11 @@ pub enum A {
 foo!{a, b<|><|> d}
 ", ", c[3]");
     do_check(r"
+fn foo() {
+    vec![<|><|>]
+}
+", "123");
+    do_check(r"
 extern {
     fn<|>;<|>
 }