[antlr-interest] Encoding of grammar files

[Петров Александр]

Hello,

I want to add comments in my grammar files (.g) in Russian.

But it's seems to me, that antlr 3.0.1 have never been in the country
of vodka and bears :)

grammar test;

options{ output = AST; ASTLabelType=CommonTree; language = CSharp; }

//Привет всем! -- Comment in Russian
program : 'program';

>java -classpath "D:\antlr\antlr-3.0.1\lib\antlr-2.7.7.jar;D:\antlr\antlr-3.0
.1\lib\antlr-3.0.1.jar;D:\antlr\antlr-3.0.1\lib\antlr-runtime-3.0.1.jar;D:\antlr
\antlr-3.0.1\lib\stringtemplate-3.1b1.jar;" org.antlr.Tool test.g

ANTLR Parser Generator  Version 3.0.1 (August 13, 2007)  1989-2007
error(10):  internal error: test.g : test.g:10:3: unexpected char: 0x41F
org.antlr.tool.ANTLRLexer.nextToken(ANTLRLexer.java:321)
antlr.TokenStreamRewriteEngine.nextToken(TokenStreamRewriteEngine.java:161)
antlr.TokenBuffer.fill(TokenBuffer.java:69)
antlr.TokenBuffer.LA(TokenBuffer.java:80)
antlr.LLkParser.LA(LLkParser.java:52)
org.antlr.tool.ANTLRParser.grammar(ANTLRParser.java:338)
org.antlr.tool.Grammar.setGrammarContent(Grammar.java:521)
org.antlr.tool.Grammar.<init>(Grammar.java:456)
org.antlr.Tool.getGrammar(Tool.java:331)
org.antlr.Tool.process(Tool.java:267)
org.antlr.Tool.main(Tool.java:70)

How to change the encoding of input .g-files and tell antlr about it ?
Thank you,
Petrov Alexander