Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> Something like the patch below seems to work (and it generalizes
>> map-put to accept for MAP not only symbols but any "lvalue").  It also
>> tightens the code generated by map--dispatch.
>
> BTW, just like `map-put', it suffers from the major problem that it
> hardcodes in the macroexpanded code (i.e. in the .elc files of Elisp
> packages that use map-put) the current definition of map--dispatch and
> the current 3 supported map types.

Indeed, I never though about this issue!

> So we should introduce a helper function (call it map--put) and move
> most of the setter's code there (including the dispatch).

Yes, I can do that.
-- 
Nicolas Petton
http://nicolas-petton.fr