sql: do not consider numbers not starting with 0 as phone numbers (#75594)

tests/test_formdata.py

@@ -4442,7 +4442,7 @@ def test_fts_phone(pub):
     assert formdef.data_class().count([FtsMatch('+33(0)123456789 bar')]) == 0
     assert formdef.data_class().count([FtsMatch('foo +33(0)123456789')]) == 1
     assert formdef.data_class().count([FtsMatch('bar +33(0)123456789')]) == 0
-    assert formdef.data_class().count([FtsMatch('123456789')]) == 2
+    assert formdef.data_class().count([FtsMatch('123456789')]) == 1
 
     formdata.data = {'1': '+32 2 345 67 89', '2': 'foo'}
     formdata.store()

wcs/sql.py

@@ -440,7 +440,14 @@ class FtsMatch(Criteria):
         self.attribute = 'fts'
         self.value = self.get_fts_value(value)
         if extra_normalize:
-            phone_match = re.match(r'.*?(?P<phone>\b\+?[-\(\)\d\.\s/]{6,20}\b)', self.value)
+            phone_match = re.match(
+                r'''.*?(?P<phone>         # a phone number
+                    ((\+[1-9])|(\b0))     # starting with an international prefix, or 0
+                    [-\(\)\d\.\s/]{6,20}  # then a bunch of numbers/symbols
+                    \b)                   # till the end of the "word"''',
+                self.value,
+                re.X,
+            )
             if phone_match and not re.match(r'^\d+-\d+$', phone_match.group('phone').strip()):
                 # if it looks like a phone number, normalize it to its
                 # "international/E164" format to match what's stored in the