Add development memo about stemming JS code, acceleration tips about stemming, small bug fix

1 files changed, 1 insertions, 1 deletions

diff --git a/sphinx/search/__init__.py b/sphinx/search/__init__.py
index 14fe16dd..03a1f9df 100644
--- a/sphinx/search/__init__.py
+++ b/sphinx/search/__init__.py
@@ -89,7 +89,7 @@ var Stemmer = function() {
         Return true if the target word should be registered in the search index.
         This method is called after stemming.
         """
-        return not (((len(word) < 3) and (12353 < ord(word[0]) < 12436)) or
+        return len(word) == 0 or not (((len(word) < 3) and (12353 < ord(word[0]) < 12436)) or
             (ord(word[0]) < 256 and (len(word) < 3 or word in self.stopwords or
                                      word.isdigit())))