In article <E1Kftvq-0000d8-Bd / x61.netlab.jp>,
  Yukihiro Matsumoto <matz / ruby-lang.org> writes:

> |File.open doesn't see "mode:" argument.
> |There is a reason this error is not occur in write mode.
>
> I assume it's a bug.  I will fix.

Which?

* File.open doesn't see "mode:" argument.
or
* There is a reason this error is not occur in write mode.

If former, what's happen on File.open(path, "w", mode: "r")?

If later, what's reason?
-- 
Tanaka Akira