From 70612c610f34a724d35d6ab9be5f09d9d11b2ea4 Mon Sep 17 00:00:00 2001
From: shimizukawa <shimizukawa@gmail.com>
Date: Sat, 14 Mar 2015 18:54:20 +0900
Subject: [PATCH] fix #1772 cross reference in docstrings like ``:param
 .write:`` breaks building.

---
 CHANGES                  |  1 +
 sphinx/domains/python.py | 16 +++++++++-------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/CHANGES b/CHANGES
index 6324bdad6..4347daafe 100644
--- a/CHANGES
+++ b/CHANGES
@@ -8,6 +8,7 @@ Bugs fixed
   doesn't overwrite existent files/dirs. Thanks to WAKAYAMA shirou.
 * #1773: sphinx-quickstart doesn't accept non-ASCII character as a option argument.
 * #1766: the message "least Python 2.6 to run" is at best misleading.
+* #1772: cross reference in docstrings like ``:param .write:`` breaks building.
 
 
 Release 1.3 (released Mar 10, 2015)
diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index c9a03de2b..b64e797b0 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -90,13 +90,15 @@ class PyXrefMixin(object):
         result = super(PyXrefMixin, self).make_xref(rolename, domain, target,
                                                     innernode, contnode)
         result['refspecific'] = True
-        if target.startswith('.'):
-            result['reftarget'] = target[1:]
-            result[0][0] = nodes.Text(target[1:])
-        if target.startswith('~'):
-            result['reftarget'] = target[1:]
-            title = target.split('.')[-1]
-            result[0][0] = nodes.Text(title)
+        if target.startswith(('.', '~')):
+            prefix, result['reftarget'] = target[0], target[1:]
+            if prefix == '.':
+                text = target[1:]
+            elif prefix == '~':
+                text = target.split('.')[-1]
+            for node in result.traverse(nodes.Text):
+                node.parent[node.parent.index(node)] = nodes.Text(text)
+                break
         return result