ScanHexNumber     637 src/scanner.cc       c = ScanHexNumber(4);
ScanHexNumber     643 src/scanner.cc       c = ScanHexNumber(2);
ScanHexNumber     808 src/scanner.cc   uc32 result = ScanHexNumber(4);
ScanHexNumber     507 src/scanner.h    uc32 ScanHexNumber(int expected_length);