Update get_rex_institute to use non delimiting group

modules/harvest_tools/base.py

@@ -104,7 +104,7 @@ def get_rex_institute(db, app):
                    .replace("+", "\+")
                    .replace("?", "\?"))
 
-            val = r"(^|\|){}($|\|)" .format(val)
+            val = r"(?:^|\|){}(?:$|\|)" .format(val)
 
             lst.append(val)
 

tests/basis/test_11_harvest_tools_base.py

@@ -31,10 +31,10 @@ def test_family_name_11001(reccds):
 def test_get_rex_institue_11002():
     val = get_rex_institute(current.db, current.app)
     assert val == \
-        r"(^|\|)Marseille, CPPM($|\|)|" \
-        r"(^|\|)CPPM, Marseille($|\|)|" \
-        r"(^|\|)Centre de Physique des Particules de Marseille \(CPPM\)($|\|)|" \
-        r"(^|\|)Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France($|\|)"
+        r"(?:^|\|)Marseille, CPPM(?:$|\|)|" \
+        r"(?:^|\|)CPPM, Marseille(?:$|\|)|" \
+        r"(?:^|\|)Centre de Physique des Particules de Marseille \(CPPM\)(?:$|\|)|" \
+        r"(?:^|\|)Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France(?:$|\|)"
 
 
 def test_order_oais_11003(reccds, recins):