t want to
>> > be displayed with org-agenda-entry-text-mode. But I can't get rid of
>> > the line, so I wind up with blank lines where the log would've been.
>>
>> You can. Just include newline into your regexp.
>
> If you are entering it interactive
"github" with the following search.
#+BEGIN_EXAMPLE
+URL={.*github.*}
#+END_EXAMPLE
If viewing the content of the subtree is necessary, then I toggle
=org-agenda-entry-text-mode=.
* The problem
The problem is that =org-agenda-entry-text-mode= doesn't show drawers
(i.e. :PROPERT