From b8084b5cb4e20d463938b518dd12f91290c3fb1a Mon Sep 17 00:00:00 2001
From: Sutou Kouhei <kou@clear-code.com>
Date: Sun, 17 May 2020 11:51:06 +0900
Subject: [ruby/csv] Fix a bug that write_nil_value or write_empty_value don't
 work with non String

GitHub: fix GH-123

Reported by asm256. Thanks!!!

https://github.com/ruby/csv/commit/b4492139be
---
 lib/csv/fields_converter.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/csv')

diff --git a/lib/csv/fields_converter.rb b/lib/csv/fields_converter.rb
index a751c9ea1d..178ffb37bc 100644
--- a/lib/csv/fields_converter.rb
+++ b/lib/csv/fields_converter.rb
@@ -50,7 +50,7 @@ class CSV
       fields.collect.with_index do |field, index|
         if field.nil?
           field = @nil_value
-        elsif field.empty?
+        elsif field.is_a?(String) and field.empty?
           field = @empty_value unless @empty_value_is_empty_string
         end
         @converters.each do |converter|
-- 
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