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-rw-r--r--lib/bundler/settings.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/bundler/settings.rb b/lib/bundler/settings.rb
index c12d1d4f74..b3cd274f31 100644
--- a/lib/bundler/settings.rb
+++ b/lib/bundler/settings.rb
@@ -146,7 +146,7 @@ module Bundler
end
def all
- keys = @temporary.keys | @global_config.keys | @local_config.keys | @env_config.keys
+ keys = @temporary.keys.union(@global_config.keys, @local_config.keys, @env_config.keys)
keys.map do |key|
key.sub(/^BUNDLE_/, "").gsub(/___/, "-").gsub(/__/, ".").downcase