A modification to the fzf key-bindings file that makes ALT-C both cd to directories and open files.

fzf-key-bindings-extension.zsh

# ALT-C - cd into the selected directory or open file
fzf-cd-widget() {
  local p="${$(command \find -L . \( -path '*/\.*' -o -fstype 'dev' -o -fstype 'proc' \) -prune \
    -o -print 2> /dev/null | sed 1d | cut -b3- | $(__fzfcmd) +m):-.}"
  if [ -d "$p" ]; then
    cd "$p"
  elif [ -f "$p" ]; then
    "$EDITOR" < /dev/tty "$p"
  else
    echo "$p"
  fi
  zle reset-prompt
}