How to correctly bind `<esc>` in zle vi visual mode in zsh 5.0.8

The standard behaviour of <ESC> zle vi-mode when in visual mode is to do nothing. But I want that the action of pressing <esc> in vi-mode visual mode switches the keymap to vi-normal mode (vicmd). As it does in standard vi.

I tried this:

bindkey -M visual '\e' vi-cmd-mode

but it did not work.

This is the vi-mode configuration file that I'm using

how can I achieve the desired behaviour?

• in zsh 5.0.8:

  nin-deactivate-region() {
     REGION_ACTIVE=0
  }
  zle -N nin-deactivate-region
  bindkey -M visual '\e' nin-deactivate-region
  

• from zsh 5.1 you already have a deactivate-region widget so it would be easier:

  bindkey -M visual '\e' deactivate-region