File: 01_basic.re

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re2c 4.4-1
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// re2c $INPUT -o $OUTPUT -i --case-ranges
#include <assert.h>

int lex(const char* YYCURSOR) {
    /*!re2c
        re2c:yyfill:enable = 0;
        re2c:define:YYCTYPE = "unsigned char";

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

int main() {
    assert(lex("1234") == 0);
    return 0;
}