Instead of indexing every single line, you could index a fraction of them (say every 10th or every 25th) and just skip a few lines after seeking.

If they want to see line 57, seek to line 50 using your index, and skip 7 lines after reading.

In reply to Re: Displaying/buffering huge text files by ctilmes
in thread Displaying/buffering huge text files by spurperl

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