Explicitly extract code block language.

org_rw/org_rw.py

@@ -922,6 +922,9 @@ class Headline:
                     if " " in arguments:
                         language = arguments[: arguments.index(" ")]
                         arguments = arguments[arguments.index(" ") + 1 :]
+                    else:
+                        language = arguments
+                        arguments = None
                 sections.append(
                     {
                         "line_first": start + 1,
@@ -984,6 +987,7 @@ class Headline:
             content = section["content"]
             code_result = section.get("result", None)
             arguments = section.get("arguments", None)
+            language = section.get("language", None)
             name = section.get("name", None)
             results.append(
                 CodeSnippet(