why won't this work? 
#!/usr/bin/perl
use warnings;
use strict;


my $should_be = <<"END_SHOULD_BE";
input is:
,  , 1
,  ,  , 2
,  ,  ,  , 3
,  ,  ,  ,  , 4
,  ,  ,  ,  ,  , 5
,  ,  ,  ,  ,  ,  , 6
,  ,  ,  ,  ,  ,  ,  , 7
,  ,  ,  ,  ,  ,  ,  ,  , 8
,  ,  ,  ,  ,  ,  ,  ,  ,  , 9
,  ,  ,  ,  ,  ,  ,  ,  ,  ,  , 10

output should be:
,, 1
,,, 2
,,,, 3
,,,,, 4
,,,,,, 5
,,,,,,, 6
,,,,,,,, 7
,,,,,,,,, 8
,,,,,,,,,, 9
,,,,,,,,,,, 10

output is:
END_SHOULD_BE

print "$should_be";



while (<DATA>)
{
    s{, +,}{,,}g;

    print $_;
}




__DATA__
,  , 1
,  ,  , 2
,  ,  ,  , 3
,  ,  ,  ,  , 4
,  ,  ,  ,  ,  , 5
,  ,  ,  ,  ,  ,  , 6
,  ,  ,  ,  ,  ,  ,  , 7
,  ,  ,  ,  ,  ,  ,  ,  , 8
,  ,  ,  ,  ,  ,  ,  ,  ,  , 9
,  ,  ,  ,  ,  ,  ,  ,  ,  ,  , 10

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In reply to remove spaces only between commas by ktl

Title:
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