parser.y in rbs-1.3.2

- old
+ new

@@ -724,11 +724,11 @@
       }
     | tQUOTEDMETHOD
     | tQUOTEDIDENT
     | tWRITE_ATTR
 
-  method_name0: tUIDENT | tLIDENT | tINTERFACEIDENT | identifier_keywords
+  method_name0: tUIDENT | tLIDENT | tINTERFACEIDENT | tUNDERSCOREIDENT | identifier_keywords
 
   identifier_keywords:
       kCLASS | kVOID | kNIL | kTRUE | kFALSE | kANY | kUNTYPED | kTOP | kBOT | kINSTANCE | kBOOL | kSINGLETON
     | kTYPE | kMODULE | kPRIVATE | kPUBLIC | kEND | kINCLUDE | kEXTEND | kPREPEND
     | kATTRREADER | kATTRACCESSOR | kATTRWRITER | kDEF | kEXTENSION | kSELF | kINCOMPATIBLE
@@ -1720,10 +1720,10 @@
     new_token(:tUIDENT)
   when input.scan(/[a-z]\w*\b/)
     new_token(:tLIDENT)
   when input.scan(/_[a-z]\w*\b/)
     new_token(:tUNDERSCOREIDENT)
-  when input.scan(/_[\w_]*\b/)
+  when input.scan(/_\w*\b/)
     new_token(:tPARAMNAME)
   when input.scan(/"(\\"|[^"])*"/)
     s = input.matched.yield_self {|s| s[1, s.length - 2] }
                      .gsub(DBL_QUOTE_STR_ESCAPE_SEQUENCES_RE) do |match|
                        case match