1 files changed, 13 insertions, 0 deletions
diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb
index 77da4489e..e9885890b 100644
--- a/Library/Homebrew/exceptions.rb
+++ b/Library/Homebrew/exceptions.rb
@@ -94,6 +94,19 @@ class TapFormulaUnavailableError < FormulaUnavailableError
   end
 end
 
+class FormulaExistsError < RuntimeError
+  attr_reader :name, :path
+
+  def initialize(name, path)
+    @name = name
+    @path = path
+  end
+
+  def to_s
+    "Formula #{name} exists in #{path}"
+  end
+end
+
 class FormulaClassUnavailableError < FormulaUnavailableError
   attr_reader :path
   attr_reader :class_name