Merge with 3.4

Doc/library/re.rst

@@ -563,7 +563,7 @@ form.
 
 .. function:: search(pattern, string, flags=0)
 
-   Scan through *string* looking for a location where the regular expression
+   Scan through *string* looking for the first location where the regular expression
    *pattern* produces a match, and return a corresponding :ref:`match object
    <match-objects>`.  Return ``None`` if no position in the string matches the
    pattern; note that this is different from finding a zero-length match at some