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[patch] :utf8 updates
[perl5.git] / lib / PerlIO.pm
index c0acdec..42c56e8 100644 (file)
@@ -139,6 +139,10 @@ and then read it back in.
        $in = <F>;
        close(F);
 
        $in = <F>;
        close(F);
 
+Note that this layer does not validate byte sequences. For reading
+input, using C<:encoding(utf8)> instead of bare C<:utf8>, is strongly
+recommended.
+
 =item :bytes
 
 This is the inverse of C<:utf8> layer. It turns off the flag
 =item :bytes
 
 This is the inverse of C<:utf8> layer. It turns off the flag