Stephen explained about my question,
| No. This "delivers" the message to the program echo. The stdout of
| this program is connected to /dev/null, by default.
Ah; thank you. I did not realize that.
| There is no real compelling reason why this is so, though; it's just
| something I decided in the beginning.
|
| So, if nobody has strong objections, this can be changed to connect to
| procmail's original stdout. The impact on backward compatibility should
| be relatively insignificant.
No strong objections (nor weak ones either) from me. People normally ex-
pect child processes to inherit file descriptors that are not specifically
redirected, so I'm actually in favor of it.