Alternative to using <& $fd

spec/hard-coded-descriptors.sh

@@ -28,6 +28,27 @@ interactive-stdin() {
  done {fd}< $path
}

# Here stdin conflicts
interactive-stdin-bad() {
  local path=$0  # This script
  while read line;  do
    echo "[$line]"
    read -p "Continue? " ans
    [[ "$ans" != yes ]] && exit 1
  done < $path
}

# Alternative way without explicit descriptors.
interactive-stdin-alternative() {
  local path=$0  # This script
  local tty=$(tty)  # e.g. /dev/pts/23
  while read line;  do
    echo "[$line]"
    read -p "Continue? " ans < $tty
    [[ "$ans" != yes ]] && exit 1
  done < $path
}

# https://www.reddit.com/r/oilshell/comments/6tch5v/avoid_directly_manipulating_file_descriptors_in/

log-dates() {