Setting trace_terminals option
Setting trace_values option
Lexer "L0" accepted lexeme L1c1-2: '12'; value="12"
Lexer "L0" accepted lexeme L1c3: '3'; value="3"
EXAMPLE 1 VALUE:$VAR1 = \[
            'data',
            '12',
            '3'
          ];

Setting trace_terminals option
Setting trace_values option
Lexer "L0" accepted lexeme L1c1-2: '12'; value="12"
EXAMPLE 2 VALUE:$VAR1 = undef;