[antlr-interest] Solved problem with matching nested blocks

[Liviu U]

I fixed the problem ;) .

grammar Test2;

options
{
  backtrack=true;
}

tokens
{
  TK_BLOCK;
}

prog
    :     (ID | block)*;

block
    :    '{'  noblock? (block noblock?)* '}';

noblock
    :    (~('}'|'{'))+;



WS     :     (' '|'\r' | '\n' | '\t' )+ {skip();};
ID     :     'a'..'z'|'A'..'Z';
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