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 Message 2088 
 Michiel van der Vlist to Wilfred van Velzen 
 Fmail Compression and Decompression 
 21 Aug 23 14:30:53 
 
TID: FMail-W32 2.2.0.0
RFC-X-No-Archive: Yes
TZUTC: 0200
CHRS: CP850 2
MSGID: 2:280/5555 64e35c34
REPLY: 2:280/464 64e229a5
Hello Wilfred,

On Sunday August 20 2023 16:50, you wrote to me:

 MvdV>> I was thinking about allowing the user to define his own
 MvdV>> compression method. A method that is not in the list (yet).
 MvdV>> There is an option "Custom" but I am unsure how that works.

 WV> Packing is simple, just use it...

Indeed..

 WV> For unpacking you need some kind of detection mechanism.

That could be circumveneted by allowing the user to not only specify a
compression method for outgoing mail but to als allow the user to specify a
decompression method per node. To be used if autodetection fails.

Or let the user specify the "fingerprint" for a custom compression method.
From what I remember it is enough to look at the first two bytes of a
compressed file. Fingerprint for ZIP is "PK"

OTOH... It may not be worth the effort this late in the game...

 WV> Which incase of FMail is left to the "General Unpack Shell". Which is
 WV> fed everything that is unknown to FMail itself...

GUS... I never used it myself, never had a need for it. It is still under
development or is it abandonware like so many other FTN stuff?


Cheers, Michiel

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