add fat arrow support for backcall statement.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/MoonP/moon_parser.cpp b/src/MoonP/moon_parser.cpp
index 1502f3c..fecf869 100644
--- a/src/MoonP/moon_parser.cpp
+++ b/src/MoonP/moon_parser.cpp
@@ -434,7 +434,8 @@ MoonParser::MoonParser() {
         NameOrDestructure = Space >> Variable | TableLit;
         AssignableNameList = Seperator >> NameOrDestructure >> *(sym(',') >> White >> NameOrDestructure);
 
-        Backcall = -FnArgsDef >> Space >> symx("<-") >> Space >> ChainValue;
+        fn_arrow_back = expr('<') >> set("-=");
+        Backcall = -FnArgsDef >> Space >> fn_arrow_back >> Space >> ChainValue;
 
         ExpList = Seperator >> Exp >> *(sym(',') >> White >> Exp);
         ExpListLow = Seperator >> Exp >> *((sym(',') | sym(';')) >> White >> Exp);