Re: Appending lists

[Emanuel Berg]

Jean Louis wrote:

> You said vairable did not change, maybe it did not change
> somewhere underground

This is how I understand it:

The variable has a reference to the first cons cell of the
list. The cons cell has a car and a cdr as always, where the
cdr is a reference to the second element of the list, which is
also a cons cell, and so on.

The car of the first element's cons cell remains the same but
the cdr has changed as a side-effect of `nreverse' (or
`nconc').

So when the variable seemingly holding the list, but actually
only holding a reference to the first cons cell, when this
variable is used one will have a different list as a result
even tho the reference is the same, unchanged.

tomas, is this correct? Maybe I won't have to draw the diagram
after all... :)

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