The PERLIO environment variable, when unset, doesn't default to :stdio.

p4raw-id: //depot/perl@29620

diff --git a/pod/perlrun.pod b/pod/perlrun.pod
index 6ac810a..e3f9f1e 100644 (file)
--- a/pod/perlrun.pod
+++ b/pod/perlrun.pod
@@ -1055,7 +1055,8 @@ emphasise their similarity to variable "attributes". But the code that parses
 layer specification strings (which is also used to decode the PERLIO
 environment variable) treats the colon as a separator.
 
-An unset or empty PERLIO is equivalent to C<:stdio>.
+An unset or empty PERLIO is equivalent to the default set of layers for
+your platforms, for example C<:unix:perlio>.
 
 The list becomes the default for I<all> perl's IO. Consequently only built-in
 layers can appear in this list, as external layers (such as :encoding()) need