I arrive too late and Zaxo has already posted a solution similar to mine. So instead of repeating the same thing, I have considerred Zaxo's solution and came up with an idea, this may be insane but here it goes: tokenize the input string and evaluate all perl variables, sort of a mini compiler/preprocessor. The tokeniser will be very difficult to implement, I have considered B, but got lazy. Anyway, below is my solution that will work under very specific conditions:
use strict;

my $alpha = "A";
my $delta = "D";
my $theta = "T";
my @hash = qw/ Hello world /;

my $test = '@hash $delta and $alpha or $theta are good';

# evaluate perl variables except bare words
my $result = qq{@{[ map { m/^[\$@%]./ ? eval $_ : $_ }
                        split/\s/,$test ]}};
print "$result\n";

[download]
And the output - 
Hello world D and A or T are good

[download]

In reply to Re: Resolving scalars in a scalar by Roger
in thread Resolving scalars in a scalar by Anonymous Monk

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