[LANGUAGE] Allow for ela geminada (·) in var names (hedyorg#4187)

Fixes hedyorg#4190

This is a redo of hedyorg#4172 in which I accidentally pushed more changes.

Note that there we must revert the content fix mentioned in hedyorg#4190 because there so work now.

hedy.py

@@ -1609,7 +1609,7 @@ def print(self, meta, args):
             else:
                 # this regex splits words from non-letter characters, such that name! becomes [name, !]
                 res = regex.findall(
-                    r"[\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}\p{Mn}\p{Mc}\p{Nd}\p{Pc}]+|[^\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}]+", a)
+                    r"[·\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}\p{Mn}\p{Mc}\p{Nd}\p{Pc}]+|[^·\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Lo}\p{Nl}]+", a)
                 args_new.append(''.join([self.process_variable_for_fstring(x, meta.line) for x in res]))
         exception = self.make_catch_exception(args)
         argument_string = ' '.join(args_new)

tests/test_level/test_level_02.py

@@ -557,6 +557,19 @@ def test_assign(self):
 
         self.multi_level_tester(code=code, expected=expected, max_level=11)
 
+    def test_assign_catalan_var_name(self):
+        code = textwrap.dedent("""\
+            print És hora una nit de Netflix
+            pel·lícula is Sonic the Hedgehog 2
+            print Veurem una pel·lícula""")
+
+        expected = textwrap.dedent("""\
+            print(f'És hora una nit de Netflix')
+            pel·lícula = 'Sonic the Hedgehog 2'
+            print(f'Veurem una {pel·lícula}')""")
+
+        self.multi_level_tester(code=code, expected=expected, max_level=3)
+
     def test_assign_integer(self):
         code = "naam is 14"
         expected = "naam = '14'"

tests/test_level/test_level_04.py

@@ -208,6 +208,17 @@ def test_ask_without_quotes_gives_error_from_grammar(self):
             exception=hedy.exceptions.UnquotedTextException
         )
 
+    def test_assign_catalan_var_name(self):
+        code = textwrap.dedent("""\
+            pel·lícula is Sonic the Hedgehog 2
+            print 'Veurem una ' pel·lícula""")
+
+        expected = textwrap.dedent("""\
+            pel·lícula = 'Sonic the Hedgehog 2'
+            print(f'Veurem una {pel·lícula}')""")
+
+        self.multi_level_tester(code=code, expected=expected, max_level=11)
+
     def test_place_holder_no_space(self):
         # same as print for level 4
         code = "print _Escape from the haunted house!_"