Re: Finding the dump

[Paul Eggert]

Daniel Colascione wrote:
> we_already_  do the moral equivalent of realpath(argv[0]), in
> init_cmdargs, which sets invocation-directory and from there various
> internal paths, including installation-directory.

Emacs can run without any of that stuff, so people can run Emacs 26 with argv[0] 
being any string they like. That will stop working if Emacs can't run when 
argv[0] is "wrong".

The GNU Coding Standards have long said that a program's behavior shouldn't 
depend its name (i.e., on the contents of argv[0]), and there are advantages to 
sticking to standard practices even if some programs depart from them.