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Re: Finding the dump

From: Paul Eggert
Subject: Re: Finding the dump
Date: Sun, 27 Jan 2019 17:21:30 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

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.

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