My script goes through the file line by line, not letter by letter. It should work even for large files where stuffing everything into memory might be a problem.

If you want to compare different solutions, benchmark. Benchmark can help you.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^3: Look Ahead regexp to insert line? by choroba
in thread Look Ahead regexp to insert line? by bowei_99

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