From e765da76f61b7afe39f74ea4b2da9a489603f6a9 Mon Sep 17 00:00:00 2001
From: Charles Haley <>
Date: Tue, 26 Apr 2011 15:06:30 +0100
Subject: [PATCH] Fix 'count-of' searches (e.g., tags:#>3). Add a small blurb
 to the manual.

---
 src/calibre/library/caches.py | 4 +---
 src/calibre/manual/gui.rst    | 2 ++
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/calibre/library/caches.py b/src/calibre/library/caches.py
index ca256e0350..543c6eab96 100644
--- a/src/calibre/library/caches.py
+++ b/src/calibre/library/caches.py
@@ -406,11 +406,9 @@ class ResultCache(SearchQueryParser): # {{{
         if val_func is None:
             loc = self.field_metadata[location]['rec_index']
             val_func = lambda item, loc=loc: item[loc]
-        dt = self.field_metadata[location]['datatype']
-
         q = ''
-        val_func = lambda item, loc=loc: item[loc]
         cast = adjust = lambda x: x
+        dt = self.field_metadata[location]['datatype']
 
         if query == 'false':
             if dt == 'rating' or location == 'cover':
diff --git a/src/calibre/manual/gui.rst b/src/calibre/manual/gui.rst
index 7b6e60c93a..a4e18c2e07 100644
--- a/src/calibre/manual/gui.rst
+++ b/src/calibre/manual/gui.rst
@@ -365,6 +365,8 @@ Dates and numeric fields support the relational operators ``=`` (equals), ``>``
 Rating fields are considered to be numeric. For example, the search ``rating:>=3`` will find all books rated 3
 or higher.
 
+You can search for the number of items in multiple-valued fields such as tags). These searches begin with the character ``#``, then use the same syntax as numeric fields. For example, to find all books with more than 4 tags, use ``tags:#>4``. To find all books with exactly 10 tags, use ``tags:#=10``.
+
 Series indices are searchable. For the standard series, the search name is 'series_index'. For
 custom series columns, use the column search name followed by _index. For example, to search the indices for a
 custom series column named ``#my_series``, you would use the search name ``#my_series_index``.