And I thought you'd just suggesting running file(1) on the file. So between a call to file(1) and just reading the first two bytes which are going to be read anyway... I don't see how that's particularly expensive. But then all this only applies if you want to detect GZip/compress files which don't use a .gz/.Z extension.

__SIG__
use B;
printf "You are here %08x\n", unpack "L!", unpack "P4", pack
  "L!", B::svref_2object(sub{})->OUTSIDE;

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In reply to Re^6: Compressed content module by diotalevi
in thread Compressed content module by simon.proctor

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