[alexandria-devel] flatten depth param

[Garrett Kolpin]

Hi,

I've found it useful to be able to specify a depth when flattening a list
structure. The attached patch adds a :to-depth keyword parameter to the
flatten function. For instance,

(flatten '((a b) (c (d)) :to-depth 1) => (a b c (d))

Is this something that could be added?

Thanks,
-Garrett
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