From a68fe4409fcee3e189b8d1db1aa810c1a42da47f Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 29 Jul 2013 15:41:01 +0530
Subject: [PATCH] Do not search virtual fields on when searching 'all'

Searching virtual fields (such as marked) ona prefix less search
disables search caching.
---
 src/calibre/db/search.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/calibre/db/search.py b/src/calibre/db/search.py
index d5a620ba58..9eeacc24b5 100644
--- a/src/calibre/db/search.py
+++ b/src/calibre/db/search.py
@@ -619,7 +619,10 @@ class Parser(SearchQueryParser):  # {{{
             if x.startswith('@'):
                 continue
             if fm['search_terms'] and x != 'series_sort':
-                all_locs.add(x)
+                if x not in self.virtual_fields:
+                    # We dont search virtual fields because if we do, search
+                    # caching will not be used
+                    all_locs.add(x)
                 field_metadata[x] = fm
                 if fm['datatype'] in {'composite', 'text', 'comments', 'series', 'enumeration'}:
                     text_fields.add(x)