From 582a9dd2909f31db3015d9470a0795a6d305f606 Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Fri, 5 Feb 2010 12:27:32 +0900
Subject: [PATCH] don't create empty tags on export

---
 anki/exporting.py |  3 ++-
 anki/tags.py      | 11 ++++++-----
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/anki/exporting.py b/anki/exporting.py
index cd7bf8d13..181dd9c44 100644
--- a/anki/exporting.py
+++ b/anki/exporting.py
@@ -54,7 +54,8 @@ class Exporter(object):
         if not self.limitTags:
             cards = self.deck.s.column0("select id from cards")
         else:
-            d = tagIds(self.deck.s, self.limitTags)
+            d = tagIds(self.deck.s, self.limitTags, create=False)
+            print d
             cards = self.deck.s.column0(
                 "select cardId from cardTags where tagid in %s" %
                 ids2str(d.values()))
diff --git a/anki/tags.py b/anki/tags.py
index aa68b6766..46fe1149c 100644
--- a/anki/tags.py
+++ b/anki/tags.py
@@ -36,21 +36,22 @@ primary key(id))""")
     except:
         pass
 
-def tagId(s, tag):
+def tagId(s, tag, create=True):
     "Return ID for tag, creating if necessary."
     id = s.scalar("select id from tags where tag = :tag", tag=tag)
-    if id:
+    if id or not create:
         return id
     s.statement("""
 insert or ignore into tags
 (tag) values (:tag)""", tag=tag)
     return s.scalar("select id from tags where tag = :tag", tag=tag)
 
-def tagIds(s, tags):
+def tagIds(s, tags, create=True):
     "Return an ID for all tags, creating if necessary."
     ids = {}
-    s.statements("insert or ignore into tags (tag) values (:tag)",
-                [{'tag': t} for t in tags])
+    if create:
+        s.statements("insert or ignore into tags (tag) values (:tag)",
+                    [{'tag': t} for t in tags])
     tagsD = dict([(x.lower(), y) for (x, y) in s.all("""
 select tag, id from tags
 where tag in (%s)""" % ",".join([