Zip.error readonly property
Get the last error message after a zip operation failed.
Example
-- always prints an error message (entry does not exists)
local compression = require "compression"
-- check parameters : the archive specified as argument
local archive = arg[1] or error("no archive specified")
-- open the archive
local z = compression.Zip(archive)
-- always throws an error using the z.error message property
local result = z:extract("dummy entry") or error(z.error)