[ruby-core:89670] [Ruby trunk Bug#14253] CSV.generate doesn't wrap a string anymore

Issue #14253 has been updated by doda (Kouichi Iwamoto).


Could you consider backporting this patch to 2.5?
The following code that generates a CSV file with a BOM does not work correctly with Ruby 2.5.

~~~ ruby
require 'csv'

csv_str = "\uFEFF" # BOM
CSV.generate(csv_str) do |csv|
  csv << ["列1", "列2", "列3"]
end

print csv_str
~~~


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Bug #14253: CSV.generate doesn't wrap a string anymore
https://bugs.ruby-lang.org/issues/14253#change-74712

* Author: ahorek (Pavel Rosický)
* Status: Closed
* Priority: Normal
* Assignee: kou (Kouhei Sutou)
* Target version: 
* ruby -v: 
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
linking with: https://github.com/ruby/csv/pull/13/files



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