From: Andrea Manzini <linux@netbusiness.it>
To: mulinux@lists.linux.it
Subject: [mu-release] il piccolo carbonaro

just a quick hack... A reversable-carbonar-rustic-crypto filter :-)) 

%%cut%%
#!/usr/bin/muawk
# mu-carboncino v 0.1 by Andrea Manzini
BEGIN {
  fr="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
  to="OPGTIVCHEJKRNMABQLZDUFWXYSopgtivchejkrnmabqlzdufwxys"
  l=length(to)
  for (i=1;i<=l;i++) t[substr(fr,i,1)]=substr(to,i,1)
  ORS=""
}

{
  s=$0
  for (i=1;i<=length(s);i++) {
    c=substr(s,i,1)
    o=" "
    for(j=1;j<=l;j++) { if (substr(fr,j,1)==c) o=t[c] }
    if (o==" ") o=c
  print o
  }
}

END { print "\n" }
%%cut%%