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-rw-r--r--lib/shellwords.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/shellwords.rb b/lib/shellwords.rb
index d02d3b06d54..66092c8999a 100644
--- a/lib/shellwords.rb
+++ b/lib/shellwords.rb
@@ -125,7 +125,7 @@ module Shellwords
str = str.to_s
# An empty argument will be skipped, so return empty quotes.
- return "''" if str.empty?
+ return "''".dup if str.empty?
str = str.dup