A bunch of cleanup on the inherited template patch

actionmailer/lib/action_mailer/base.rb

@@ -693,15 +693,8 @@ def collect_responses_and_parts_order(headers) #:nodoc:
     end
 
     def each_template(paths, name, &block) #:nodoc:
-      Array.wrap(paths).each do |path|
-        templates = lookup_context.find_all(name, path)
-        templates = templates.uniq_by { |t| t.formats }
-
-        unless templates.empty?
-          templates.each(&block)
-          return
-        end
-      end
+      templates = lookup_context.find_all(name, Array.wrap(paths))
+      templates.uniq_by { |t| t.formats }.each(&block)
     end
 
     def create_parts_from_responses(m, responses) #:nodoc:

actionmailer/lib/action_mailer/old_api.rb

@@ -201,7 +201,7 @@ def create_parts
       if String === @body
         @parts.unshift create_inline_part(@body)
       elsif @parts.empty? || @parts.all? { |p| p.content_disposition =~ /^attachment/ }
-        lookup_context.find_all(@template, @mailer_name).each do |template|
+        lookup_context.find_all(@template, [@mailer_name]).each do |template|
           self.formats = template.formats
           @parts << create_inline_part(render(:template => template), template.mime_type)
         end

actionpack/lib/action_view/path_set.rb

@@ -11,23 +11,41 @@ def #{method}(*args)
     end
 
     def find(*args)
-      template = find_all(*args).first
-      template or raise MissingTemplate.new(self, "{#{args[1].join(',')},}/#{args[0]}", args[3], args[2])
+      if template = find_first(*args)
+        template
+      else
+        raise MissingTemplate.new(self, *args)
+      end
     end
 
     def find_all(path, prefixes = [], *args)
-      templates = []
       prefixes.each do |prefix|
+        templates = []
+
         each do |resolver|
-          templates << resolver.find_all(path, prefix, *args)
+          templates.concat resolver.find_all(path, prefix, *args)
         end
-        # return templates unless templates.flatten!.empty? XXX this was original behavior; turns this method into find_some, but probably makes it faster
+
+        return templates unless templates.empty?
       end
-      templates.flatten
+
+      []
+    end
+
+    def find_first(path, prefixes = [], *args)
+      prefixes.each do |prefix|
+        each do |resolver|
+          if template = resolver.find_all(path, prefix, *args).first
+            return template
+          end
+        end
+      end
+
+      nil
     end
 
     def exists?(*args)
-      find_all(*args).any?
+      !!find_first(*args)
     end
 
   protected

actionpack/lib/action_view/template/error.rb

@@ -27,7 +27,7 @@ def message
   class MissingTemplate < ActionViewError #:nodoc:
     attr_reader :path
 
-    def initialize(paths, path, details, partial)
+    def initialize(paths, path, prefixes, partial, details, *)
       @path = path
       display_paths = paths.compact.map{ |p| p.to_s.inspect }.join(", ")
       template_type = if partial
@@ -38,7 +38,11 @@ def initialize(paths, path, details, partial)
         'template'
       end
 
-      super("Missing #{template_type} #{path} with #{details.inspect} in view paths #{display_paths}")
+      searched_paths = prefixes.map { |prefix| [prefix, path].join("/") }
+
+      out  = "Missing #{template_type} #{searched_paths.join(", ")} with #{details.inspect}. Searched in:\n"
+      out += paths.compact.map { |p| "  * #{p.to_s.inspect}\n" }.join
+      super out
     end
   end
 

actionpack/lib/action_view/template/resolver.rb

@@ -47,7 +47,7 @@ def build_path(name, prefix, partial)
       path
     end
 
-    # Hnadles templates caching. If a key is given and caching is on
+    # Handles templates caching. If a key is given and caching is on
     # always check the cache before hitting the resolver. Otherwise,
     # it always hits the resolver but check if the resolver is fresher
     # before returning it.

actionpack/test/controller/mime_responds_test.rb

@@ -565,7 +565,7 @@ def using_resource_with_responder
 
   def using_resource_with_action
     respond_with(resource, :action => :foo) do |format|
-      format.html { raise ActionView::MissingTemplate.new([], "foo/bar", {}, false) }
+      format.html { raise ActionView::MissingTemplate.new([], "bar", ["foo"], {}, false) }
     end
   end