Error: Add reminder FIXME

src/Error.cpp

@@ -37,6 +37,8 @@ void Error::show_import_lines(const Location& loc, void (*import_line_printer)(c
     }
 }
 
+// FIXME: Seems like the cursor that indicates where the error is is a bit offset to the right.
+
 [[noreturn]] void Error::throw_error(const Location& loc, const std::string line_text, const std::string& details)
 {
     show_import_lines(loc, show_import_line, std::cerr);