Allow in question -s for just sourcing file and -S to source file with ``` encapsulation.

tests/test_question_cmd.py

@@ -23,7 +23,7 @@ class TestMessageCreate(unittest.TestCase):
         # create arguments mock
         self.args = MagicMock(spec=argparse.Namespace)
         self.args.source = None
-        self.args.source_code_only = False
+        self.args.source_code = None
         self.args.ai = None
         self.args.model = None
         self.args.output_tags = None
@@ -94,11 +94,11 @@ Is it good?"""))
         # source file contains no source code
         # -> don't expect any in the question
         self.assertEqual(len(message.question.source_code()), 0)
-        self.assertEqual(message.question, Question("""What is this?
+        self.assertEqual(message.question, Question(f"""What is this?
 
 {self.source_file1_content}"""))
 
-    def test_single_question_with_embedded_source_code_source(self) -> None:
+    def test_single_question_with_embedded_source_source(self) -> None:
         self.args.question = ["What is this?"]
         self.args.source = [f"{self.source_file2.name}"]
         message = create_message(self.chat, self.args)
@@ -106,6 +106,20 @@ Is it good?"""))
         # source file contains 1 source code block
         # -> expect it in the question
         self.assertEqual(len(message.question.source_code()), 1)
-        self.assertEqual(message.question, Question("""What is this?
+        self.assertEqual(message.question, Question(f"""What is this?
 
 {self.source_file2_content}"""))
+
+    def test_single_question_with_embedded_source_code_source(self) -> None:
+        self.args.question = ["What is this?"]
+        self.args.source_code = [f"{self.source_file2.name}"]
+        message = create_message(self.chat, self.args)
+        self.assertIsInstance(message, Message)
+        # source file contains 1 source code block
+        # -> expect it in the question
+        self.assertEqual(len(message.question.source_code()), 2)
+        self.assertEqual(message.question, Question(f"""What is this?
+
+```
+{self.source_file2_content}
+```"""))