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6143a50ed2
All the fiddly business where you have to check that a thing exists, make sure of its type, find its size, allocate some memory, and then read it again properly (or, alternatively, loop round dealing with ERROR_MORE_DATA) just doesn't belong at every call site. It's crying out to be moved out into some separate utility functions that present a more ergonomic API, so that the code that decides _which_ Registry entries to read and what to do with them can concentrate on that. So I've written a fresh set of registry API wrappers in windows/utils, and simplified windows/storage.c as a result. The jump-list handling code in particular is almost legible now!