Originally bug report CR 6829622 Incorrect end line for HTML/RUBY code

FULL PRODUCT VERSION :
java version "1.6.0_12"
Java(TM) SE Runtime Environment (build 1.6.0_12-b04)
Java HotSpot(TM) Client VM (build 11.2-b01, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP SP2

A DESCRIPTION OF THE PROBLEM :
I was unable to find a bug report for this on the database.

I installed instant rails and was working with that as the rails system used by Netbeans with mongrel as the web server.

I am learing Ruby on rails using Netbeans 6.5 as my editing system and server. At first Netbeans was working perfectly, but yesterday, it started having issues with the 
HTML/Ruby code. The following code:

<%= render(:partial => "cart" , :object => @cart) %>

is no longer working because Netbeans is setting the end of the HTML line at the first greater than (>)  symbol instead of the last one. So when I try to view the web page I get 
an error stating that the line is wrong because it only reads "<%= render(:partial =>" ignoring the rest of the line.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I was following the instruction on the book "Agile Web Development with Rails" third edition, which i am using to learn Ruby on rails web development. I was working on 
chapters 5-9 building the Depot application. The code worked until the end of chapter 8 when i inserted the code:

<%= button_to "Empty cart" , :action => :empty_cart %>

here the yellow boxes that signifies the start and end of a function moved from the "%>"  to the "=>" so the server is now ignoring everything after the "=>"

from there on, any code I type that has the  "=>"  causes Netbeans to close the HTML string at the greater than symbol in the "=>" function.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The code should close and when run the application should have read the whole line:

<%= button_to "Empty cart" , :action => :empty_cart %>

and not:

<%= button_to "Empty cart" , :action =>

ACTUAL -
The Netbeans sets the yellow boxes for the HTML code on the less than symbol at the start of the line and the first greater than symbol inside the line.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
NoMethodError in Store#index

Showing app/views/store/_cart.html.erb where line #6 raised:

undefined method `total_price' for #<Cart:0x933f80c>
Extracted source (around line #6):

3:     <%= render(:partial => "cart_item" , :collection => cart.items) %>
4:     <tr class="total-line">
5:       <td colspan="2">Total</td>
6:       <td class="total-cell"><%= number_to_currency(cart.total_price) %></td>
7:     </tr>
8:   </table>
9: <%= button_to "Empty cart" , :action => :empty_cart %>
Trace of template inclusion: app/views/layouts/store.html.erb

RAILS_ROOT: C:/rails/workspace/depot

Application Trace | Framework Trace | Full Trace
app/views/store/_cart.html.erb:6
app/views/layouts/store.html.erb:16
Request

Parameters:

None
Show session dump

Response

Headers:

{"cookie"=>[],
 "Content-Type"=>"text/html",
 "Cache-Control"=>"no-cache"}

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
<h1>Your Pragmatic Cart</h1>
<ul>
<% for item in @cart.items %>
<li><%= item.quantity %> &times; <%=h item.title %></li>
<% end %>
</ul>
<%= button_to "Empty cart" , :action => :empty_cart %>
---------- END SOURCE ----------