--- a/Smalltalk.st	Sat Nov 05 19:03:06 2016 +0100
+++ b/Smalltalk.st	Sat Nov 05 19:05:38 2016 +0100
@@ -3795,8 +3795,10 @@
 
 defineCommandLineAsWorkspaceVariablesForScripts
     "/ enable this, so we can provide _$1.._$n in the script
+    ParserFlags allowUnderscoreInIdentifier:true.
     ParserFlags allowDollarInIdentifier:true.
     ParserFlags warnDollarInIdentifier:false.
+    ParserFlags warnUnderscoreInIdentifier:false.
 
     "/ add bindings for arguments
     Workspace workspaceVariableAt:('_$0') put:CommandName.