1 files changed, 5 insertions, 1 deletions
diff --git a/Library/Homebrew/utils/popen.rb b/Library/Homebrew/utils/popen.rb
index 83f140163..1463df530 100644
--- a/Library/Homebrew/utils/popen.rb
+++ b/Library/Homebrew/utils/popen.rb
@@ -10,7 +10,11 @@ module Utils
   def self.popen(args, mode)
     IO.popen("-", mode) do |pipe|
       if pipe
-        yield pipe
+        if block_given?
+          yield pipe
+        else
+          return pipe.read
+        end
       else
         STDERR.reopen("/dev/null", "w")
         exec(*args)