On Sun, 15 Mar 2015, Markus Reschke wrote to mark lewis:

 TK>> #############+| Unpack unprotected     Yes |#####################

 ml> there it is!

 ml> and for those fearing mailbombs, the last one in that screenshot 
 ml> about checking the compression ration is protection against them...

 MR> Do all packers support the output of the compression ratio?

i don't know... generally the information is listed when one queries the
archive for its contents... information can be parsed for this value...

 MR> What about nested ZIPs for example?

they're not something we have to worry about, are they? their compression
percentage would appear in the above data and since fidonet doesn't do
archives embedded within archives for mail, it should not be a problem...
especially if the tosser works from a known list of archives which it
gathers when it searches the directory in question and builds its list of
files to process...

)\/(ark