basic file handling
This is a very good function, but can we make this function return std::io::Result<()> instead? I think that displaying the error as a string should be the job of whatever command is saving the file.
basic file handling
I don't think that splitting up commands into chars before processing like this is the right approach. For example, q! would be treated as two separate commands despite it performing a different operation than q.
basic file handling
If "q" is given multiple command parts, it still quits without issuing a warning. I'm not sure if this should exit silently even when given more arguments than expected. What do you think?
