1 files changed, 2 insertions, 1 deletions

diff --git a/src/yuescript/yue_parser.cpp b/src/yuescript/yue_parser.cpp
index e860d55..1011a49 100644
--- a/src/yuescript/yue_parser.cpp
+++ b/src/yuescript/yue_parser.cpp
@@ -709,7 +709,8 @@ YueParser::YueParser() {
         chain_with_colon = +chain_item >> -colon_chain;
         chain_items = chain_with_colon | colon_chain;
 
-        index = '[' >> not_('[') >> space >> Exp >> space >> ']';
+        index = '[' >> not_('[') >> space >> (ReversedIndex >> and_(space >> ']') | Exp) >> space >> ']';
+        ReversedIndex = '#' >> space >> -('-' >> space >> Exp);
         chain_item =
                 Invoke >> -ExistentialOp |
                 DotChainItem >> -ExistentialOp |