The case sensitivity issue is simple, use "i" with your s/ to make the operation "case insensitive": 
$line =~ s/(\S+)/$dict{$1} || $1/egi;

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The problem with "man-kind" is this: \S includes "-", but \w does not! 
my ( $key, $val ) = /^(\d+)\s+(\w+)/;

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If you print the value of your keys, I think you will find #4 is just "man".

By the way, the "key" to a hash is it's name. The "value" of a hash is the data it contains. Altho it will not affect the functioning of your code, you have this nomenclature backward in the code which creates the dictionary.

In reply to Re: seaching for replacement by halfcountplus
in thread seaching for replacement by Anonymous Monk

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