[antlr-interest] matchRange in parser?

[jrc at skylon.demon.co.uk]

Should the following work?
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grammar Simple;
line         : systemIdList NEWLINE ;
systemIdList : systemId | systemId ',' systemIdList ;
systemId     : '0'..'9' ;
NEWLINE      : '\r'? '\n' ;
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Here's what I get:
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$ java org.antlr.Tool Simple.g
ANTLR Parser Generator  Version 3.0 (May 17, 2007)  1989-2007
$ javac *.java
SimpleParser.java:119: cannot find symbol
symbol  : method matchRange(char,char)
location: class SimpleParser
            matchRange('0','9');
            ^
1 error
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Swapping 'systemId' (parser rule) to 'SystemId' (lexer rule) causes
matchRange() to be found ...
--
John Connett