In Cygwin, I set up GNU APL as a server I could connect to by doing the following.
mkfifo /tmp/pipe
cat /tmp/pipe |apl --noColor 2>&1 | nc -l 127.0.0.1 9999 > /tmp/pipe
Now if I connect to this, GNU APL comes up, but it exhibits a rather odd echoing of my input where it prints the first character, five spaces, and then the rest of the input, before printing the output. Like this...
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
'this is a test'
' this is a test'
this is a test
The odd thing is that it doesn't do this if I make the program I am redirecting a shell, or some C program that reads and writes stdio. It only happens when I do it with GNU APL. While I'm not suggesting this is a bug, I was wondering if anyone could suggest an explanation of this unexpected behavior. Is there something uncommon about the way GNU APL reads and writes stdio?