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On 21 August 2016 at 13:34, Geoff Leyland <> wrote:
> I've just dusted off some old 5.1 ESRI Shapefile reading code that uses LHF's lpack.  What's happened to lpack in the last few years?
> If I understand correctly, Roberto's struct library superseded pack?  I also somehow got the idea that 5.2 had a string.pack and unpack that did the same job, but maybe I'm just confusing pack moving into table.pack?
> If I should upgrade to struct, how compatible are they?

5.3 gained string.pack and string.unpack.
They are *almost* compatible with Roberto's struct library.

compat-5.3 backports string.pack and string.unpack (among other
things) to 5.1 and 5.2