You'll notice that the defaults are such that a program naively copying the contents of a file to another with taking the existence of advanced filesystem features into account will still work (and that's on OS level, not Perl -s level). In light of that trend I'd suggest that -s reports the uncompressed size of NTFS compressed files.

And that's probably all the OP needed, too.

Makeshifts last the longest.

In reply to Re^3: filesize module on win32 systems by Aristotle
in thread filesize module on win32 systems by Anonymous Monk

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