EXOS CLI Cursor jumping

[M_Nees]

EXOS CLI cursor is sometimes jumping out of the windows - especially on long command lines or if the putty windows was resized during the session (which is quite a normal effort).

Have a look:

Especially if you want to change one parameter within a existing line of commands.

This Problem occurs in all EXOS versions. I try several putty versions, but all have the same issue.

Does anybody know this issue ?

Is it possible to avoid that problem ? Maybe an adjustment on Putty client ?
Are there a possibility to make EXOS CLI line redraw ?

Regards

[Stephane_Grosj1]

a CR is being opened.

[dfroe]

You want an example? Well, I just typed a few commands on a recent XOS Switch (16.1.3.6 patch1-11), and the CLI get messed up even without any resizing of my terminal.

1) Open a PuTTY SSH to XOS.

2) Execute the following command:
download image 1.2.3.4 foo.bar vr VR-Default
It will intentionally throw an error without doing anything.

3) Press Key-Up to recall the last command.

4) Scroll left and position your cursor right after the filename for example.

5) Start typing anything and continue typing.

6) As soon as there is a line wrap going to happen at the end of your window, the terminal gets messed up like seen on Matthias' first screenshot.

And common, recalling a command and editing it, that's nothing unusal. I guess that even worked on VT100's back in the 80's..

[Stephane_Grosj1]

Indeed.
I guess I didn't notice it because I need to type a lot to have it happen, way more than any command allows.

That shouldn't happen, a CR should be opened to have this investigated.

[Erik_Auerswald]

I'd wager that results from the error message not taken into account correctly for cursor positioning (I could reproduce this using XTerm, OpenSSH, EXOS 15.3).

If I remember correctly just recalling or editing inside a line needing wrapping results in the "jumping cursor" when connected via serial console using a terminal window size that is different from the configured CLI size.

[Erik_Auerswald]

For what it's worth, terminal window resizing in SSH sessions just works for GNU/Linux inside XTerm and gnome-terminal using OpenSSH with Bash or Busybox ash as shell. It does not depend on Bash's checkwinsize option. There are no artificial limits for window sizes either.

I think it annoying that EXOS does not adjust automatically to a changed terminal window size for SSH sessions. 