1
2 # This filter requires one command line option of form -vN=n
3 # where n must be a decimal number.
4 #
5 # Repeat each input line containing $$ n times, replacing $$ with 0...n-1.
6 # Replace each $# with n, and each $* with a single $.
7
8 BEGIN {
9 n = N + 0
10 }
11 {
12 if (/\$\$/) { rep = n } else { rep = 1 }
13 for (i = 0; i < rep; ++i) {
14 tmp = $0
15 gsub(/\$\$/, i, tmp)
16 gsub(/\$#/, n, tmp)
17 gsub(/\$\*/, "$", tmp)
18 print tmp
19 }
20 }
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