my $str = "Hello\n\t\n   World\n"; 
print $str; 
$str =~ s/\s+/ /g; 
print $str;

[download]

Output

Hello

   World
Hello World

[download]

Update: Please note this replaces all whitespace chars to a single space char. So if you have leading/trailing spaces please go with Your Mother's solution!

In reply to Re: How to remove \n between two words but retain one space by sk
in thread How to remove \n between two words but retain one space by Anonymous Monk

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