bug#38696: "If you edit it by hand, you could mess it up"

[Richard Stallman <rms@gnu.org>]

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  > A priori that sounds complicated, and maybe error
  > prone, to me.  But maybe it's worth considering.

I am not trying to insist.

  > My suggestion would be to just change the comment
  > wording a bit, to make clear that future use of
  > Customize might overwrite any manual changes you
  > make to that code.  IOW, state that clearly as a
  > major reason _why_ you're advised not to edit the
  > code.

I agree that would be an improvement.

  > I'd even suggest that if `custom-file' is
  > undefined then Customize should immediately ask
  > a user to define it, instead of just silently
  > writing to a user's init file.

I think that would make Emacs usage a little more complicated
for lots of users, and only a few would benefit.

-- 
Dr Richard Stallman
Founder, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)