[Toybox] Still poking at shell corner cases...

[Rob Landley]

bash:

  $ cat << one << two
  > hello
  > two
  > one
  > and
  > two
  and
  $

dash:

  $ cat << one << two
  > hello
  > two
  > one
  > and
  > two
  and
  $

mksh in terminal app on android:

  $ cat << one << two
  > hello
  > two
  > one
  > and
  > two
  /system/bin/sh: can't create temporary file /data/local/shxijx9k.tmp: Permission denied
  $

So it consumes the HERE document inputs in sequence, but only the last is passed to stdin. (And mksh is doing whatever it's doing, can't tell because "security" prevents it from working. I should dig up my M phone and see what it did back when it worked.)

Rob.