Hi everyone, I'm using gzip_decompressor in a manner similar to the example program found at the bottom of http://boost.org/doc/libs/1_35_0/libs/iostreams/doc/classes/gzip.html . It mostly works well, however there is a feature of the standard Unix gzip(1) program that it doesn't seem to emulate: gzip allows one to concatenate gzipped files together, and when one uncompresses the resulting file it will be identical to if the two uncompressed files had been concatenated. That is to say, one can do this: $ echo "abc" > a $ echo "def" > b $ gzip a $ gzip b $ cat a.gz b.gz > c.gz $ gunzip -c c.gz abc def $ However, using this Boost code: ifstream file("c.gz", ios_base::in | ios_base::binary); filtering_streambuf<input> in; in.push(gzip_decompressor()); in.push(file); boost::iostreams::copy(in, cout); Will result only in the first line, "abc" being output. Is there any easy way to emulate the behavior of gzip(1) in this regard? Any help is appreciated. David