bug#13780: 24.2; Making find-file-hook customizable seems to cause troublle

[Stefan Monnier]

>> So until Custom is fixed to actually properly handle customisation of
>> hooks (e.g. by storing "add functions foo, bar, and baz" rather than
>> "ignore current value and just set it to (foo bar baz)").
> This sentence seems to be missing its main clause…

That's not just an appearance.  Its main clause is:

   So until Custom ...blabla... I think it's better to use defcustom for
   hooks very sparingly, i.e. only for those hook we can reasonably
   expect will only be modified by the user's customization.


        Stefan