[SOLVED] Recover an interrupted command in zsh

Recover an interrupted command in zsh

In zsh, if one accidentally interrupted a command (^C), is there a quick way to recover the full interrupted command line?

For example,

PROMPT $ this is a long command ^C
PROMPT $ [cursor here]

I would like to recover "this is a long command" at the cursor position.

Solution

One solution is to

zle-line-init () {
  if [[ -n $ZLE_LINE_ABORTED ]]; then
    local savebuf="$BUFFER" savecur="$CURSOR"
    BUFFER="$ZLE_LINE_ABORTED" 
    CURSOR="$#BUFFER" 
    zle split-undo
    BUFFER="$savebuf" CURSOR="$savecur" 
  fi
}
zle -N zle-line-init

Then, in the new input line, undo (C-/ in emacs mode) would give the aborted line.

reference: http://www.zsh.org/mla/users/2015/msg00652.html

I've added a more detailed explanation here: https://www.topbug.net/blog/2016/10/03/restore-the-previously-canceled-command-in-zsh/