Update RecordPubli to use new pattern defining affiliation.

modules/invenio_tools/recordpubli.py

@@ -312,21 +312,21 @@ class RecordPubli(Record):
         Args:
             pattern (unicode):
                 regular expression defining the affiliation keys.
-                It should not contains groups.
+                It has to be build for an exact match namely containing
+                start and end of string. This is reuqired to separate
+                `Ecole Plolytechnique` from `Ecole Polytechnique, Lausanne`.
 
         Returns:
             unicode:
-                - the affiliation
+                - the affiliation or the first one when several are found.
                 - empty string when nothing is found.
 
         """
-        # modify the pattern to capture group
-        pattern = "(%s)" % pattern
-
-        data = (self[u"700"].u.str.extract(pattern, expand=False)
-                .dropna())
+        df = self[u"700"]
+        query = df.u.str.contains(pattern)
+        data = (df[query].u.unique())
 
-        return (data.iloc[0] if len(data) > 0 else u"")
+        return (data[0] if len(data) > 0 else u"")
 
     def find_authors(self, pattern, sep=u", ", sort=False):
         """Find authors containing the regular expression *pattern*.
@@ -385,7 +385,6 @@ class RecordPubli(Record):
 
         """
         df = self[u"700"]
-
         query = df.u.str.contains(pattern)
 
         if sort: