From 15c9b59f0e9c3be117870863b6d79bbe466f3b90 Mon Sep 17 00:00:00 2001
From: Matthew Honnibal <honnibal+gh@gmail.com>
Date: Sun, 23 Oct 2016 15:50:26 +0200
Subject: [PATCH] Fix Issue #461: O tag was being clobbered by doc.ents.__set__

---
 spacy/tokens/doc.pyx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spacy/tokens/doc.pyx b/spacy/tokens/doc.pyx
index 4e292d623..52abf47c0 100644
--- a/spacy/tokens/doc.pyx
+++ b/spacy/tokens/doc.pyx
@@ -323,7 +323,7 @@ cdef class Doc:
             cdef int i
             for i in range(self.length):
                 self.c[i].ent_type = 0
-                self.c[i].ent_iob = 0
+                self.c[i].ent_iob = 2 # Means O, not missing!
             cdef attr_t ent_type
             cdef int start, end
             for ent_info in ents: