Break gzip plugins

[utix]

gz files are not decompressed.
when a gz file is opened from vim decompression is done.

vim toto.gz won't work
vim then :e toto.gz will

version 1.0 is ok cfc14a4
master KO

git bisect give bcada53 as the first bad commit

[anishsane]

It also breaks
vim scp://server/file

Or in general, any plugin that has a reinterpretation of args.