Mono，C＃控制台，腻子-箭头键变为空字符

Question

I'm creating a basic C# console application which runs on my debian server using Mono for compilation.

I'm using PuTTY to communicate with the server & send commands to the app I'm creating.

The problem:
If I try to go to previous command, next command, move left/right in entered input => using arrow keys - nothing happens!

When I investigated the problem, found out that every arrow key I press is send to input as a null character '\\0' (found out by iterating over every key in output of Console.Readline()).

And yes, it works fine on Windows (10)!

I ask you:

Is it problem of PuTTY or it's settings ?
Is it problem related to Mono or my own code ?
Do I just have to deal with it ?

Answer 1

Cecilio is correct, ReadLine does not implement that functionality. What you are seeing on Windows is "Shell" integration.

StreamReader.ReadLine

Reads a line of characters from the current stream and returns the data as a string.

If you are looking for the same shell-style integration without using a readline lib you should look at the LineEditor class:

getline.cs: Partying like its 1988

Note: the source links are out of date in the blog, so use Mono/Mono at Github.

using Mono.Terminal;

    LineEditor le = new LineEditor ("MyApp");
    while ((s = le.Edit ("prompt> ", "")) != null)
        Console.WriteLine ("You typed: " + s);

It supports the regular cursor editing, Emacs-like editing commands, history, incremental search in the history as well as history loading and saving.

Answer 2

The ReadLine function does not implement the history/edit functionality you are expecting. It just reads a string, nothing more. EDIT : But it does!