doc: fix return value of open {} and use File.open {}

ruby / csv

CSV Reading and Writing

https://ruby.github.io/csv/

BSD 2-Clause "Simplified" License

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doc: fix return value of open {} and use File.open {} #139

Closed BurdetteLamar closed 4 years ago

BurdetteLamar commented 4 years ago

@kou, Something's terribly wrong here. The file doc/argument_io.rdoc is not here. I thought it was already merged, along with references to it. How to resolve?