[aacero]

I reported the following error in 0.7.1 when searching the news feeds:
ERROR: Unhandled exception: <b>TypeError</b>:search() takes exactly 3 arguments (2 given)

In the beta release (also numbered 0.7.1) that error is gone, and the first search works. However, if I clear the search box calibre hangs and eventually emits the following message:

ERROR:ERROR: Unhandled exception
RuntimeError:maximum recursion depth exceeded in cmp

Traceback (most recent call last):
File "site-packages\calibre\web\feeds\recipes\model.py", line 246, in search
File "site-packages\calibre\utils\search_query_parser.py", line 170, in parse
File "site-packages\calibre\utils\search_query_parser.py", line 178, in _parse
File "site-packages\calibre\utils\pyparsing.py", line 1065, in parseString
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2434, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2309, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2434, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2309, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2434, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2309, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 2577, in parseImpl
File "site-packages\calibre\utils\pyparsing.py", line 941, in _parseNoCache
File "site-packages\calibre\utils\pyparsing.py", line 1527, in parseImpl
RuntimeError: maximum recursion depth exceeded in cmp

(tony_acero on Twitter)