correct casefold in completion of namespaces

Author: d-biehl

robotcode/language_server/robotframework/parts/completion.py

@@ -371,6 +371,9 @@ def enumerate_indexes(s: str, c: str) -> Iterator[int]:
                     library_name = token.value[0 : lib_name_index - r.start.character]  # noqa: E203
 
                     libraries = await namespace.get_libraries()
+                    
+                    library_name = next((e for e in libraries.keys() if e.casefold() == library_name.casefold()), library_name)
+
                     if library_name in libraries:
                         r.start.character = lib_name_index + 1
                         for kw in libraries[library_name].library_doc.keywords.values():

robotcode/language_server/robotframework/parts/semantic_tokens.py

@@ -221,7 +221,9 @@ def generate_sem_sub_tokens(
                             col_offset + old_index,
                             index - old_index,
                             RobotSemTokenTypes.NAMESPACE,
-                            {SemanticTokenModifiers.DEFAULT_LIBRARY} if token.value[:index] == "BuiltIn" else None,
+                            {SemanticTokenModifiers.DEFAULT_LIBRARY}
+                            if token.value[:index].casefold() == "BuiltIn".casefold()
+                            else None,
                         )
                     yield SemTokenInfo(token.lineno, col_offset + index, 1, RobotSemTokenTypes.SEPARATOR)