I see the issue now with the program below (stdout.cpp - cl stdout.cpp):
#include <stdio.h>
void main()
{
char bytes[] = { 0x41, 0x53, 0x43, 0x49,
0x49, 0x20, 0x6F, 0x75,
0x74, 0x70, 0x75, 0x74,
0xE1, 0xBE, 0xB9};
for (int i = 0; i < 15; i++)
{
printf("%c", bytes[i]);
}
}
And running that through | Out-File -enc UTF8 foo.txt
gives the gibberish:
PS> fhex foo.txt
Address: 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII
-------- ----------------------------------------------- ----------------
00000000 EF BB BF 41 53 43 49 49 20 6F 75 74 70 75 74 0D ...ASCII output.
00000010 9F E2 95 9B E2 95 A3 0D 0A .........
Note that fhex is a PSCX utility.
UPDATE: Figured out how to get this to work:
$enc = [Console]::OutputEncoding
[Console]::OutputEncoding = [text.encoding]::utf8
.\stdout.exe | out-file fubar3.txt -enc utf8
fhex .\fubar3.txt
Address: 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII
-------- ----------------------------------------------- ----------------
00000000 EF BB BF 41 53 43 49 49 20 6F 75 74 70 75 74 E1 ...ASCII output.
00000010 BE B9 0D 0A ....
[Console]::OutputEncoding = $enc