plan9port

fork of plan9port with libvec, libstr and libsdb
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range.prep (300B)

      1 awk ' # range.prep
      2 #   Input:  ["%begin"|"%end"|""] string (tab) number
      3 #   Output: string (tab) ["b"|"e"|"a"]  (tab) number
      4 
      5 BEGIN		{ FS = OFS = "\t" }
      6 		{ f2 = "a" }
      7 $1 ~ /^%begin/	{ f2 = "b"; sub(/^%begin */, "", $1) }
      8 $1 ~ /^%end/	{ f2 = "e"; sub(/^%end */, "", $1) }
      9 		{ print $1, f2, $2 }
     10 ' $*