From: Thom Harp <thomharp@...>
Date: 2001-12-14T22:27:39+09:00
Subject: [ruby-talk:28503] Why doesn't IO#popen raise exceptions?

If the command given to IO#popen is invalid, ruby prints "command not found:
...." to stderr and exits. Wouldn't the Ruby way be to raise an exception?  The
exec system call used in the implementation (at least for UN*X) can set errno
to any number of useful values that I might like to know about in my script.
Granted this is made more complicated by the fact that errno value would have
to propagated back from a forked child, but we're sophisticated, we can handle
that, right?

-thom