Optimize some ++ situations

[Christofer Tornkvist (ctornkvi)]

Hi,

would it be a stupid suggestion to let add a parameter of list type
to all built-in and library functions returning a list.

The additional list parameter will represent a list-tail that will be appended to the result.
Append would be accomplished by  [ ListResult| MyTail ].

If this was the case, the complier can optimize code like;
erlang:atom_to_list(Atom) ++ MyTail
into
erlang:atom_to_list(Atom, MyTail)

or

lists:map(Fun, List) ++ MyTail
into
lists:map(Fun, List, MyTail)


Or is the compiler able to see this optimization anyhow?

Cheers!
/Christofer
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