versions: silence 'aka' warning and syntax errors

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/Library/Homebrew/cmd/versions.rb b/Library/Homebrew/cmd/versions.rb
index 48496d99a..55703c811 100644
--- a/Library/Homebrew/cmd/versions.rb
+++ b/Library/Homebrew/cmd/versions.rb
@@ -63,15 +63,21 @@ class Formula
         path = Pathname.new(Pathname.pwd+"#{name}.rb")
         path.write text_from_sha(sha)
 
-        # Unload the class so Formula#version returns the correct value.
+        # Determine the version by loading the old class file.
         # Note that this means that the command will error out after it
         # encounters a formula that won't import. This doesn't matter
         # for most formulae, but e.g. Bash at revision aae084c9db has a
         # syntax error and so `versions` isn't able to walk very far back
         # through the history.
+
+        # Unload the class so Formula#version returns the correct value.
         # FIXME shouldn't have to do this?
-        Object.send(:remove_const, "#{Formula.class_s(name)}")
-        Formula.factory(path).version
+        Object.send(:remove_const, Formula.class_s(name))
+        begin
+          nostdout { Formula.factory(path).version }
+        rescue SyntaxError
+          nil
+        end
       end rescue nil
     end
 end