[mgdlbp]

M-x eshell

  Welcome to the Emacs shell
  
  /tmp $ set-variable `x 6; echo $x
  6
  /tmp $ 

M-: (term "pwsh")

  PowerShell 7.4.0
  PS /tmp> set-variable `x 6; echo $x
  6
  PS /tmp> 

Disturbing.