Merge pull request #8889 from hyuraku/fix_brew_edit

fix brew edit

Library/Homebrew/dev-cmd/edit.rb

@@ -29,7 +29,12 @@ module Homebrew
       EOS
     end
 
-    paths = args.named.to_formulae_paths.presence
+    paths = args.named.to_formulae_paths.select do |path|
+      next path if path.exist?
+
+      raise UsageError, "#{path} doesn't exist on disk. " \
+                        "Run #{Formatter.identifier("brew create $URL")} to create a new Formula!"
+    end.presence
 
     # If no brews are listed, open the project root in an editor.
     paths ||= [HOMEBREW_REPOSITORY]