Question about TPRegexp

Dear ROOTers,

      I would like to use TPRegexp to parse the content of a string and recognize usefull information inside, but I'm experiencing a strange problem. It looks like that TPRegexp cannot extract more than 10 groups. Is that a "nice" feature of pcre or I'm missing something?

Here an example to show you the problem...

int test() {

  TPRegexp
longTest("^\\s*(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s*$");   TString longString("1 2 3 4 5 6 7 8 9 10");

  TPRegexp
shortTest("^\\s*(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s*");   TString shortString("1 2 3 4 5 6 7 8 9");

  if (shortTest.MatchB(shortString)) {
    cout << "Short test passed" << endl;
} else {

    cout << "Short test failed" << endl;
}

  if (longTest.MatchB(longString)) {
    cout << "Long test passed" << endl;
} else {

    cout << "Long test failed" << endl;
}

  return 0;
}

And this is the output

root [8] .L test.C
root [9] test()
Short test passed
Error in <Match>: pcre_exec error = 0
Long test failed
(int)0

Thanks for your help,

Cheers

Antonio

-- 

Antonio Bulgheroni, PhD