Can be written chomp(my $line = <STDIN>); ;D
But that doesn't generalise for all rvalue uses. For example, I frequently want to write something like
frobnicate(chomp) while <$file>; # doesn't work
and am of course instead forced to write the loop out longhand, since
chomp, frobnicate($_) while <$file>; # yuck
is starting to get hard to read.
Personally I consider this a failure in Perl's Huffman coding. I can't think of a single case where I've cared in the slightest how many characters chomp removed, but I do want to be able to chomp something and then immediately pass the chomped value to some other routine.