I'm not getting it, and I have two questions.

• I'm wanting to do a transliteration on variable strings. I can do a tranliteration on hardcoded values:

  #!/usr/bin/env perl
                                                            
  use strict;
  
  my $s = 'eabcde';
  $s =~ tr/abcd/efgh/;
  print "$s\n";
  [download]

  Getting eefghe as a result. Fair enough.

  I find in the archives that using variable strings requires eval. Yet when I try to implement this, I bomb out:

  #!/usr/bin/env perl 
  
  use strict;
  
  my $search = 'eabcde';
  my $replace = 'efgh';
  
  my $result = eval "tr/$search/$replace/";
  
  print "$search\n";
  print "$replace\n";
  print "$result\n";
  [download]

  ...gives the results:

  eabcde
  efgh
  0
  [download]

  So how can I capture the result of the second tranliteration?

• My second question lies in making these strings more complicated -- to the point of containing regular expression metacharacters. Obviously I need to escape them, but both search and replace strings are quite long and contain many characters which will require massaging.

  Is there a default module which does such escaping, or is there a CPAN module which does what I need?

Thanks for any help you can provide.

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