[ruby/optparse] Use class methods of File
over IO
https://github.com/ruby/optparse/commit/ab5073e4d8
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@ -1925,7 +1925,7 @@ XXX
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}
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end
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begin
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parse(*IO.readlines(filename).each {|s| s.chomp!}, into: into)
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parse(*File.readlines(filename, chomp: true), into: into)
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true
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rescue Errno::ENOENT, Errno::ENOTDIR
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false
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