Re: [PATCH RFC3.5 05/12] send-email: Improve redability and error-handling in send_message's sendmail code

On Sat, Apr 18, 2009 at 21:17, Thomas Adam [off-list ref] wrote:

More concerning is that it's a perl 5.10ism -- you cannot assume that
perl 5.10 is installed on all platforms.  I really wouldn't use this
construct.

See that's the thing: How am I supposed to know it's a perl 5.10ism?
The Perl docs give absolutely no clue; Perl[5] is based way too much
on practice rather than theory, because only people that have been
using it since day 1 know what's going on. A couple of weeks ago, I
went to the perldoc website and just read each website one after the
other---that is my total knowledge of Perl, and already I've caught
flack a number of times for having used 'new-fangled technologies'; I
really wish the docs would specify when a feature became available.

... add that to the list of perldoc shortcomings.