[fabian2k]

Topspin is free for academic users for a while now, so that has changed at some point.

And while it's certainly possible to process 1D NMR spectra with a bit of code, it's certainly more than 5 lines. There's stuff like removing the digital filter that is an implementation detail of Bruker spectrometers you have to deal with. The FFT is the smallest parts, you also need window functions and phasing to make something useful. And for 2D NMR you additionally need to handle the various methods of quadrature detection in the indirect dimension.