File: 01_basic.re

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re2c 4.4-1
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// re2d $INPUT -o $OUTPUT -i
module main;

private bool lex(const(char)* yycursor) {
    /*!re2c
        re2c:YYCTYPE = char;
        re2c:yyfill:enable = 0;

        [1-9][0-9]* { return true; }
        *           { return false; }
    */
}

void main() {
    assert(lex("1234"));
}