ext/rbs_extension/lexer.re in rbs-3.3.2 vs ext/rbs_extension/lexer.re in rbs-3.4.0.pre.1

@@ -95,10 +95,14 @@
       "void"          { return next_token(state, kVOID); }
       "use"           { return next_token(state, kUSE); }
       "as"            { return next_token(state, kAS); }
       "__todo__"      { return next_token(state, k__TODO__); }
 
-      dqstring = ["] ("\\"[abefnrstv"\\] | [^"\\\x00])* ["];
+      unicode_char = "\\u" [0-9a-fA-F]{4};
+      oct_char = "\\x" [0-9a-f]{1,2};
+      hex_char = "\\" [0-7]{1,3};
+
+      dqstring = ["] (unicode_char | oct_char | hex_char | "\\" [^xu] | [^\\"\x00])* ["];
       sqstring = ['] ("\\"['\\] | [^'\x00])* ['];
 
       dqstring     { return next_token(state, tDQSTRING); }
       sqstring     { return next_token(state, tSQSTRING); }
       ":" dqstring { return next_token(state, tDQSYMBOL); }