[Lzip-bug] lzip and pipes

[Daniel Klein]

Hi,

i'm not sure if this counts as bug, and i wasn't able to find something 
about it.

lzip seems to somehow "block" I/O in a process feeding it data via pipe.
Not the data stream itself, but data written to files or pipes other than 
stdin and out.

Like

cat big_file | pv | lzip >big_file.lz

The "blocking intervals" get longer with higher compression levels.
I also tested with a python script, reading and writing data to stdin/out 
works, other "stuff" too, but output to other channels gets blocked.

Nothing like this happends "behind" lzip.

Tried out versions 1.16, 1.18 and 1.21.



Daniel