{
  ; all fine here:
  TString s2 = "premoderator-2um-10mm-5-5cm-200gauss-0deg-G4_W-lhexa-100000.txt";
  TString p2 = "premoderator-(.*)um-(.*)mm-(.*)-(.*)cm-(.*)gauss-(.*)deg-(.*)-(.*)-(.*)\.txt";
  TString r2 = "$1; $2; $3; $4; $5; $6; $7; $8; $9";
  TPRegexp(p2).Substitute(s2, r2);
  cout << s2 << endl;

  ; but with problems in this place:
  TString s1 = "premoderator-2um-10mm-5-5cm-200gauss-0deg-G4_W-lhexa-100000-long-none.txt";
  TString p1 = "premoderator-(.*)um-(.*)mm-(.*)-(.*)cm-(.*)gauss-(.*)deg-(.*)-(.*)-(.*)-(.*)-(.*)\.txt";
  TString r1 = "$1; $2; $3; $4; $5; $6; $7; $8; $9; $10; $11";
  TPRegexp(p1).Substitute(s1, r1);
  cout << s1 << endl;
}