Windows once again does wonderful things without being asked:
I am writing unicode to a file, to be read back in again. utf-16le has 2 byte or 4 byte characters, but on windows, if one of these bytes is a CR, it is automatically "corrected" to a CR LF, and I end up with an odd number of bytes, and a mess when I try to read this in with the same encoding.
What a mess. And since I am already using binmode, I don't know how to set it to 'binary'. It does not work to just add a ':raw' or ':bytes' to the encodoing.
$_ = "\x{ff0a}\x{1234}";
open OUT, ">temp.txt";
binmode OUT, ":encoding(UTF-16le)";
print OUT;
close OUT;
# The output file contains FIVE bytes: 0D 0A FF 34 12
open IN, "<temp.txt";
binmode IN, ":encoding(UTF-16le)";
<IN>; # this line causes: UTF-16LE:Partial character at temp.pl lin
+e 12.
close IN;