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Current File : //usr/share/doc/re2c/examples/c/encodings/unicode_identifier.re

// re2c $INPUT -o $OUTPUT -8 --case-ranges -i
#include <assert.h>
#include <stdint.h>

/*!include:re2c "unicode_categories.re" */

static int lex(const char *s) {
    const char *YYCURSOR = s, *YYMARKER;
    /*!re2c
        re2c:define:YYCTYPE = 'unsigned char';
        re2c:yyfill:enable = 0;

        // Simplified "Unicode Identifier and Pattern Syntax"
        // (see https://unicode.org/reports/tr31)
        id_start    = L | Nl | [$_];
        id_continue = id_start | Mn | Mc | Nd | Pc | [\u200D\u05F3];
        identifier  = id_start id_continue*;

        identifier { return 0; }
        *          { return 1; }
    */
}

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

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