Send an extra kill signal to the PTY

Functions/Init/.autocomplete:async

@@ -179,20 +179,25 @@ builtin zle -N history-incremental-search-backward .autocomplete:async:history-i
  local -a reply=()
  local text=
 
- # WORKAROUND: #441 Directly using $(( [#10] 100 * max( 0, seconds - SECONDS ) ) )) leads to 0 in Zsh 5.9, as the
- # result of max() gets converted to an integer _before_ being multiplied.
+ # WORKAROUND: #441 Directly using
+ # $(( [#10] 100 * max( 0, seconds - SECONDS ) ) ))
+ # leads to 0 in Zsh 5.9, as the result of max() gets converted to an
+ # integer _before_ being multiplied.
  builtin zstyle -s :autocomplete: timeout seconds ||
  seconds=0.5
  local -i timeout=$(( 100 * max( 0, seconds - SECONDS ) ))
  zselect -rt $timeout "$fd" &&
  zpty -r AUTOCOMPLETE text $'*\C-B'
 
  } always {
- zpty -w AUTOCOMPLETE $'\C-C\C-D' # Tell the shell to stop what it's doing and exit.
+ # Press ^C twice: Once to abort completion, then once to abort the command
+ # line. Then exit the shell with ^D.
+ zpty -w AUTOCOMPLETE $'\C-C\C-C\C-D'
  zpty -d AUTOCOMPLETE
  }
  } always {
- # Always produce output, so we always reach the callback, so we can close the fd.
+ # Always produce output, so we always reach the callback, so we can close
+ # the fd.
  print -rNC1 -- "$SECONDS" "${text%$'\0\C-B'}"
  }
 }