while(<DATA>){
    print "\n$1:" if s/^(\d+ \w+)//;
    print " $1" while(s/(\w+\d+)//);
}


__DATA__
1 change by user23 
8 changes by 4 users: user1 user2 user3 user4
6 changes by 4 users: user5 user3 user3 user1 user15 
1 change by user1

[download]

In reply to Re: Dynamic matching by Lennotoecom
in thread Dynamic matching by flybd5

Title:
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