Re: Add file-locals and dir-locals

[Stephen J. Turnbull]

Eli Zaretskii writes:

 > Dumping creates an Emacs executable that includes everything that was
 > loaded prior to dumping.  Technically, it's a more-or-less exact image
 > of the memory Emacs had.  So the only way to remove parts of the
 > loaded packages would be to unload those parts from memory.  We
 > currently have only unload-feature, which is not granular enough.

And in any case, that's only half-done.  Then you need to successfully
garbage-collect the space containing dead data (unloaded features), or
you're doing nobody any favors.

For this proposal to make practical sense, you'd need a compacting
garbage collector, but that's difficult (except for special cases like
string data where you expect there should be exactly one reference).