[bug#60753] file like parameters not working

[benoit]

Hi,

the last patch fixed the undefined issue, now the configuration does not 
work with file-like input.

this example: (init-file (list (local-file "init.el")))

the resulting ~/.config/emacs/init.el has the path of my init.el file 
instead of it's content.

I'm suspecting the serialization code consider init-file list to always 
be string. If I put a string instead of a local-file, I get the proper 
behavior.

thanks for doing this!

I'll see if I can troubleshoot the issue later tonight.

Benoit