Dear Monks I have an dictionary of index and the corresponding terms: 
1 eat
2 habit
3 boy
4 man-kind
5 man
6 kind
..

[download]
I want to search in my text and replace each term with its index. I have my code and it works but I have two problems:

1- when in my text I see "Eat" or "eat" I want to replace them with 1. my index is all lowercase but my text has lower and uppercase. so if my text is "XXX EAT Eat eat xxx" > I want it "XXX 1 1 1 xxx" without lowercasing the original text.

2- When I reach the terms such as "man-kind" , it would not be replaced by 4. thats the problem with "-".

this is my code: 
my %dict;
while ( <DATA> ) {
    my ( $key, $val ) = /^(\d+)\s+(\w+)/;
    $dict{ $val } = $key;
    }

my $cc = join '', keys %dict;
my ( $min ) = my ( $max ) = map length, keys %dict;

for ( map length, keys %dict ) {
    $min = $_ if $min > $_;
    $max = $_ if $max < $_;
    }

my $pattern = qr/\b([$cc]{$min,$max})\b/;

while (my $line = <INFILE>) {
    $line =~ s/(\S+)/$dict{$1} || $1/eg;
    print $line;
}

[download]
Where INFILE is my text and DATA is my index dictionary. Thanks in advance.

In reply to seaching for replacement by Anonymous Monk

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