Basically,  my input is something like:

something{

value: >>>

This is the text

<<<

}

I want a rule that can give me as a value "This is the text".

I've tried:

LQS: LQSS *options {greedy=false;} : .)* LQSE;

LQSS : '>>>\n';

LQSE: '\n<<<';

and I've tried using channel=HIDDEN on LQSS and LQSE, but then I get
errors while parsing other parts of my source.

I have a work around, but its ugly.  I have a rule

lstring returns [String value]: LQS {value=
$LQS.getText().replaceFirst(">>>\n","").replaceFirst("\n<<<$", "");};

but that seems like an awful big hack.  Any suggestions?

Thanks,
Daniel.
P.S. I've also sent this message to the antlr-interest mailing list.