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#75170
add-to-alist: new function
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"Alfred M. Szmidt" <ams <at> gnu.org> writes:
> map-put! does not work well with alists that are not 'proper':
>
> ELISP> (setq x (list 1 '(2 . 3)))
> (1 (2 . 3))
>
> Why should it work on alists at all? map-put! assumes a map (where is
> this structure documented? I did not see anything in the Elisp
> manual), not an alist. Invalid alists will also not work on functions
> that assume alists.
According to M-x describe-package RET map RET:
map.el provides generic map-manipulation functions that work on
alists, plists, hash-tables, and arrays. All functions are
prefixed with "map-".
That seems like it cannot possibly work (or very complicated). How do
you differetnate between a plist and alist? Order in an alist is
important, but not in a plist. Their syntax is exactly the same, how
can a insertion function work correctly for that?
The above sounds like it is also overloading the concept of
sequencess?
This bug report was last modified 196 days ago.
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