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							- Possible upgrades to gzfilebuf:
 
- - The ability to do putback (e.g. putbackfail)
 
- - The ability to seek (zlib supports this, but could be slow/tricky)
 
- - Simultaneous read/write access (does it make sense?)
 
- - Support for ios_base::ate open mode
 
- - Locale support?
 
- - Check public interface to see which calls give problems
 
-   (due to dependence on library internals)
 
- - Override operator<<(ostream&, gzfilebuf*) to allow direct copying
 
-   of stream buffer to stream ( i.e. os << is.rdbuf(); )
 
 
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