rem: if (textyear.digits == 2)
add: else if (textyear.digits == 2)
context: to_year (textint textyear){  int year = textyear.value;  if (year < 0)    year = -year;  /* XPG4 suggests that years 00-68 map to 2000-2068, and     years 69-99 map to 1969-1999.  */  if (textyear.digits == 2)    year += year < 69 ? 2000 : 1900;  return year;}