Committed, thanks.

The attached patch was required for me to get passwd_expect to work

correctly.



I cannot explain why stdin might be in non-blocking mode, but it was,

and so sometimes expect would miss the username/password strings. I

can only put this one down to deep crackfulness on the part of tcl,

expect, apache, or php, and express my strong desire to never know

what is going on there. Understanding this can only lead to

pain. Forcing stdin into blocking mode ensures that it always works.



The exp_continue is necessary because otherwise, if expect sees

$fingerprint_string, it does not bother looking for $password_string

or sending the old password. Obviously nobody ever tested this, it

can't ever have worked.