Originally Posted by Doitsu
Actually, it isn't that obvious at to us mere mortals. There are several different versions of mobiunpack. The latest incarnation
, comes with a python wrapper GUI (.pyw) that allows you to split a combo file into 2 binary files. (You'll need to check the Split Combinations Mobi Files option to generate .mobi and .azw3 files.)
The calibre plugin version of MobiUnpack
also has the ability to split the hybrid kindlegen-produced file into its two constituent parts, as well. Says so right in the main features list.
When you highlight an ebook that has a joint mobi/KF8 file format, there will be a menu-item to split the file.
NiLuJe has updated these files, but the patch that he generated from his updated files can only be applied by people who know their way around revision control systems. Hopefully, he'll attach his patched files, too.
There's no real "maintainer" of the MobiUnpack code, but I tend to run all patches/new versions/proposed changes past pdurrant and/or KevinH. pdurrant, has been involved with the code-base for a long time (and as a moderator, can update the original post with the new version) and KevinH did a lot of the KF8 stuff. I take care of maintaining the calibre plugin, but it just uses the original MobiUnpack "core" as is.