Attached is a patch to automatically load custom-file when defined.

Motivation:

After 30 years of emacs use, I'm getting tired of the need to load custom-file when you setq it.

And when introducing people to emacs, the question of why you need to load it explicitly arises only too often.

Rationale:

1. if custom-file is nil, nothing changes

2. if you set custom-file:

  2a. If you don't load it explicitly in your init.el, it gets loaded at a predictable place in the loading sequence (ie. after init.el was loaded)

  2b. If you load it explicity in init.el, it doesn't get loaded twice and init.el "wins".

3. CORNER CASE:

   Q:Currently, my init.el defines custom-file, but I don't load it.

    A Add

  (setq custom-file-load-p nil)

to your init.el and emacs will not load custom-file

Best,

/Pedro A.Aranda

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