548660 - Location bar does not recognize the plus sign [+] for keyword searches

Status: RESOLVED DUPLICATE of bug 359809

(Firefox :: Address Bar, defect)

Description

[J. Bumblebee Extraordinaire]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a2pre) Gecko/20100225 Minefield/3.7a2pre
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a2pre) Gecko/20100225 Minefield/3.7a2pre

I have created/edited my keyword search for Google.
When I type
-----
g search terms go here
-----
into the location bar (Ctrl + L) and hit enter, firefox sends the input to google. The resulting URL string is something like
http://www.google.com/search?hl=en&q=search%20terms%20go%20here .

Google (and other keyword searches that I have) also make use of the plus sign for some searches. For example, entering 
------
g 9+5
------
into the Location Bar should get the websurfer 
http://www.google.com/search?q=9%2B5

But instead, the websurfer gets 
http://www.google.com/search?hl=en&q=9+5
Although there is a plus sign in the URL search string, Google interprets the [+] symbol as a [space]. Firefox should have converted the plus sign into the proper string of symbols. I'm guessing, from the successful instance, that the phrase is [ %2B ].

Things of note:

a. The plus sign/symbol is correctly understood when using the search box (to the right of the Location Bar).

b. The plus sign is correctly understood by other browsers (e.g., Google Chrome; Chromium). These other browsers understand that the plus sign which I inputted is a plus sign, and not a [space] or anything but a plus sign/symbol.

c. Default predefined smart keyword for Google search is [ google ]. I changed mine to the shorter one-letter [ g ] to save time.

Reproducible: Always

Steps to Reproduce:
1.Go to Location Bar
2. Type in either 
google 9+5
or
g 9+5

3. Go to the address (click green forward button OR hit [Enter Key])

Actual Results:  
I get sent to a page that begins like 
http://www.google.com/search?hl=en&q=9+5

Expected Results:  
I expected to be taken to a google page that looks similar to this:
http://www.google.com/search?q=9%2B5