That would have been useful information to have provided upfront. Perhaps you'd care to update your initial post with this limitation. You can still do the transliteration - this code produces the same output as my previous solution: 

$ perl -Mstrict -Mwarnings -e '       
    binmode STDOUT => ":utf8";
    my $subs = join q{} => map chr, 0x430, 0x431, 0x446, 0x410, 0x411,
+ 0x426;
    while (<>) {
        s/@([^@]+)@/"\$_ = \$1; y{abcABC}{$subs}; \$_"/eeg;
        print;
    }
'

[download]

-- Ken

In reply to Re^3: Find pieces of text in a file enclosed by `@` and replace the inside by kcott
in thread Find pieces of text in a file enclosed by `@` and replace the inside by kluther

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