This is what mine looks like in libnickel:
<Patch>
patch_name = `Allow searches on Extra dictionaries`
patch_enable = `yes`
# Multi-version patch: 4.7.10413 - 4.7.10413+
#
## To allow searches on Extra dictionaries change space character at end of
## "Extra: " to another char (ex: "Extra:_")
## The space char causes a non-desired "English - English" when searching on
## Extra dictionary from main menu.
Sould I do something about the part in bold? (I put it in bold to make it clearer what I'm talking about, it's not like that when I open notepad)