Don’t use `puts_columns` if `empty?` or single item.

1 files changed, 3 insertions, 4 deletions

diff --git a/Library/Homebrew/cask/lib/hbc/cli/install.rb b/Library/Homebrew/cask/lib/hbc/cli/install.rb
index 996de8d1b..1292ad076 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/install.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/install.rb
@@ -42,13 +42,12 @@ module Hbc
 
       def self.warn_unavailable_with_suggestion(cask_token, e)
         exact_match, partial_matches = Search.search(cask_token)
-        errmsg = e.message
         if exact_match
-          errmsg.concat(". Did you mean:\n#{exact_match}")
+          onoe e.message.concat(". Did you mean:\n#{exact_match}")
         elsif !partial_matches.empty?
-          errmsg.concat(". Did you mean one of:\n#{puts_columns(partial_matches.take(20))}\n")
+          onoe e.message.concat(". Did you mean one of:")
+          $stderr.puts_columns(partial_matches.take(20))
         end
-        onoe errmsg
       end
 
       def self.help