Only check for options and prefix arguments order once when running
content_tag_for with a collection.

Thank you @spastorino for catching the empty test in b84cee08, as I totally forgot that I still have to make it html_safe.

So instead of having to do this:

   @items.each do |item|
     content_tag_for(:li, item) do
        Title: <%= item.title %>
     end
   end

You can now do this:

   content_tag_for(:li, @items) do |item|
     Title: <%= item.title %>
   end

Signed-off-by: NMichael Koziarski <michael@koziarski.com>
[#871 state:committed]

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8980 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Standardize on using hyphens rather than colons to separate option names from their explanation in documentation. Replace + with tt tags. Closes #8732. [ryanb]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8106 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6731 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Added the first part of Simply Helpful to core. The rest is pending a clean integartion of polymorphic urls [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6633 5ecf4fe2-1ee6-0310-87b1-e25e094e27de