diff options
| -rw-r--r-- | ext/date/date_core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/date/date_core.c b/ext/date/date_core.c index 67ed6171a7..388b30ba7a 100644 --- a/ext/date/date_core.c +++ b/ext/date/date_core.c @@ -2545,9 +2545,12 @@ date_s__valid_civil_p(int argc, VALUE *argv, VALUE klass) * Date.valid_date?(year, month, mday[, start=Date::ITALY]) -> bool * * Returns true if the given calendar date is valid, and false if not. + * Valid in this context is whether the arguments passed to this + * method would be accepted by ::new. * * Date.valid_date?(2001,2,3) #=> true * Date.valid_date?(2001,2,29) #=> false + * Date.valid_date?(2001,2,-1) #=> true * * See also ::jd and ::civil. */ |