I wonder why you are creating and writing to modified.dfminfo?
read and write at the same time to .dfminfo? never tried that before. it's doing it line by line, i guess i feel safer should the program crash in the middle.
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to check whether it is gzipped before writing to it.
since it's decided not be gzipped for future versions, i have not bothered with that. hmm, io.popen - nice function though.Instead of grid snapping everything in .dfminfo, should use the the select & drag feature of dfm to provide a subset of lines to your script to process.
original here.