`puts_columns` only has to be defined inside `module Kernel`.

1 files changed, 2 insertions, 8 deletions

diff --git a/Library/Homebrew/utils/puts_columns.rb b/Library/Homebrew/utils/puts_columns.rb
index 94a5354ad..7f8e2d319 100644
--- a/Library/Homebrew/utils/puts_columns.rb
+++ b/Library/Homebrew/utils/puts_columns.rb
@@ -1,10 +1,10 @@
 require "utils/tty"
 
-class IO
+module Kernel
   def puts_columns(*objects, gap_size: 2)
     objects.flatten!
 
-    if objects.empty? || !tty?
+    if objects.empty? || (respond_to?(:tty?) && !tty?)
       puts(*objects)
       return
     end
@@ -41,9 +41,3 @@ class IO
     end
   end
 end
-
-module Kernel
-  def puts_columns(*objects)
-    $stdout.puts_columns(*objects)
-  end
-end