No need for +1 on initial seen_pointer
@ -5220,7 +5220,7 @@ void process_next_command() {
while (*current_command_args == ' ') ++current_command_args;
// Interpret the code int
seen_pointer = current_command + 1;
seen_pointer = current_command;
codenum = code_value_short();
// Handle a known G, M, or T