[clisp-list] ext:make-buffered-input- and -output-stream are undocumented

[Hoehle, Joerg-C. <Joe...@t-...>]

Hi,

I just realized that these two functions - which have been in CLISP for =
a decade - are missing from impnotes.html.

They come in very handy when writing custom streams.

MAKE-BUFFERED-INPUT-STREAM can make a stream take input from a =
function, lazily!

MAKE-BUFFERED-OUTPUT-STREAM does line buffering on output. This =
enhances tiny write() pretty much.

I prefer to report this here instead of filing a bug-report, so people =
can start using them!

For example, MAKE-BUFFERED-INPUT-STREAM might work nicely together with =
non-blocking or single calls to read() on sockets and pipes(might need =
enhancement to return ls_wait status to the listen function).

A nice extension to the output behaviour would be to allow any kind of =
buffering, e.g. in 4KB chunks.

Both are limited to character streams. But see the cookbook on how to =
do arbitrary 8bit output using character streams.
http://cl-cookbook.sourceforge.net/io.html#faith

Regards,
	J=F6rg H=F6hle.