fuz.sh

#!/usr/bin/env bash
set -e

main() {
  previous_file="$1"
  file_to_edit=`select_file $previous_file`

  if [ -n "$file_to_edit" ] ; then
    "$EDITOR" "$file_to_edit"
    main "$file_to_edit"
  fi
}

select_file() {
  given_file="$1"
  fzf --preview="cat {}" --preview-window=right:70%:wrap --query="$given_file"
}

main ""

Thank you Casey for the idea and the nice article which led me to this script.

As a tribute, I can suggest a simplification. Since version 0.10 fzf supports --bind with execute:

alias fuz=fzf --preview="cat {}" --preview-window=right:70%:wrap --bind 'enter:execute($EDITOR {})'