[Dovecot] [checkpassword] I can't get a password from fd3

[Durk Strooisma]

>> read -d '\0' -r -u 3
> You are missing the correct syntax to interpret backslash escapes here:
>
> read -d $'\0' -r -u 3
>
> will work.

Thanks a lot!! I was indeed missing the $ sign! And it is nicely documented
here:

http://www.gnu.org/software/bash/manual/bashref.html#ANSI_002dC-Quoting

I never doubted the syntax, because when I didn't provide a delimiter (in
that case read uses a newline), still nothing but the username could be
read, but there is no newline after the username... That made me think there
was something else wrong. So it seems that read always stops reading at a
nul character (and removing any other data) if it cannot find the provided
or default delimiter.

Durk