Bit-fields within bigger variables is something I do like in C.

In C this is done by a syntax similar to defining structs (= records).

IMHO this is a good idea.

In fact it would be nice to be able to create (packed) records that 
contain an arbitrary count of variables each using an arbitrary count of 
bits.

Sometimes a problem:

In C it is implementation dependent at what position in such a struct 
the bits of each variable is allocated. So communicating such data with 
partners needs additional attention.

(Usually such a struct is filled high bit first with "high-byte first" 
archs and low bit first with "low-byte first" archs.)

-Michael

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