In addition to the s/// solution already proposed you can use tr: 

my $str = "apple    banana     lemon";
$str =~ tr/ /|/s;
print "$str\n";
# apple|banana|lemon

[download]

The /s option to tr is needed to do this. It will make tr "squash" repeated characters generated by transliteration to just one character.

In reply to Re: Reaplcing double spaces by wog
in thread Replacing double spaces (was: Reaplcing double spaces) by DaWolf

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