20 lines
423 B
Awk
20 lines
423 B
Awk
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# This filter requires one command line option of form -vN=n
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# where n must be a decimal number.
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#
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# Repeat each input line containing $$ n times, replacing $$ with 0...n-1.
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# Replace each $# with n, and each $* with a single $.
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BEGIN {
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n = N + 0
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}
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{
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if (/\$\$/) { rep = n } else { rep = 1 }
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for (i = 0; i < rep; ++i) {
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tmp = $0
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gsub(/\$\$/, i, tmp)
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gsub(/\$#/, n, tmp)
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gsub(/\$\*/, "$", tmp)
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print tmp
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}
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}
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