Allright!
The working code is:
$_=q&pqfo%;-tijgu<%0>voefg<%`>=%;?<t")/*"
%2!"h<t"))@;=]t*!|3-~*"(%c.>(/)mfohui)%2*03*/#<#"hfy<
t"))@;?]t*!|3-~*"(%c,>(/)mfohui)%2*03*/#<#"hfy<t"))@;
],]t*|3-~*"(%b\%c^,>(/)mfohui)%2*03*/#<#"hf<t"))@;].]
t*|3-~*"(%b\%c^.>(/)mfohui)%2*03*/#<#"hf<t"?]t!"]%c,,
<"hy<t"=]t!"]%c..<"hy<t")\,.^*]t"]%b\]%c^%2%2<]o"h<t"
]/]t"qsjou!dis)]%b\]%c^*<"h<t"-]t!"]%b\]%c^>pse)tvctu
s)=?-1-2**<"hy<t"]\]t"xijmf)]%b\]%c^*|"h<t"]^]
t"~"h<fwbm<&;y~\n~~d&&s~(.)~chr(ord($1)-1)~eg&&eval;
I removed the strange tr which was depending on the charset... and also removed a strange part of the end of the while block... And now...
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This code was in the dumb way... of course there is a smarter way of using it... BTW, you must save it as a file an call it as the first parameter to the script
