[Bug #591](Closed) io.c の rb_io_extract_modeenc で変数 has_vmode は不用か?

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http://redmine.ruby-lang.org/issues/show/591

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In message Re: [ruby-dev:36504] Bug #591 io.c e$B$Ne(B
rb_io_extract_modeenc e$B$GJQ?te(B has_vmode e$B$OITMQ$+e(B?
on Wed, 24 Sep 2008 17:06:05 +0900, Martin De.AeN|rst
[email protected] writes:

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