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1 #       @(#)merge.awk   8.3 (Berkeley) 5/25/94
2 #
3 # merge index entries into one line per label
4 $1 == prev {
5         printf ", %s", $2;
6         next;
7 }
8 {
9         if (NR != 1)
10                 printf "\n";
11         printf "%s \t%s", $1, $2;
12         prev = $1;
13 }
14 END {
15         printf "\n"
16 }