[FS#3404] zsh: cannot backspace when connected from openssh in tmux

[OpenWrt Bugs]

THIS IS AN AUTOMATED MESSAGE, DO NOT REPLY.

A new Flyspray task has been opened.  Details are below. 

User who did this - dianlujitao (dianlujitao) 

Attached to Project - OpenWrt/LEDE Project
Summary - zsh: cannot backspace when connected from openssh in tmux
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on: NETGEAR WNDR4300
 - Software versions of OpenWrt/LEDE release, packages, etc.
   * OpenWrt 19.07.4 r11208-ce6496d796
   * zsh - 5.6.2-2
 - Steps to reproduce
   1. Start a tmux session on Linux PC
   2. Use ssh to connect to OpenWRT router, where the user uses zsh instead of zsh (i.e. the config in /etc/passwd looks like this `root:x:0:0:root:/root:/usr/bin/zsh`)
   3. Type arbitrary words and delete them by pressing Backspace key
 - Expected behavior
   The chars are deleted
 - Actual behavior
   A whitespace was appended to the char instead, as if we're typing the space key, but it's deleted internally: when pressing Enter to execute the command, what's been executed is the original command minus the deleted part

Note that I don't have the issue when:
 1. connecting to a normal Linux computer (the user's shell is zsh ofc)
 2. using the default busybox ash
 3. executing ssh outside tmux, e.g. a normal Konsole terminal session


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3404

You are receiving this message because you have requested it from the Flyspray bugtracking system.  If you did not expect this message or don't want to receive mails in future, you can change your notification settings at the URL shown above.