Overlays category - could this be made buffer local?

Overlays category - could this be made buffer local?

[Lennart Borgman (gmail)]

 From Info

  -- Function: overlay-get overlay prop
      This function returns the value of property PROP recorded in
      OVERLAY, if any.  If OVERLAY does not record any value for that
      property, but it does have a `category' property which is a
      symbol, that symbol's PROP property is used.  Otherwise, the value
      is `nil'.

If 'category where allowed to be a symbol then buffer local values could 
be set.

Re: Overlays category - could this be made buffer local?

[Miles Bader]

"Lennart Borgman (gmail)" <lennart.borgman@gmail.com> writes:
>      If OVERLAY does not record any value for that
>      property, but it does have a `category' property which is a
>      symbol, that symbol's PROP property is used.  Otherwise, the value
>      is `nil'.
>
> If 'category where allowed to be a symbol then buffer local values could
> be set.

`category' is already a symbol.  I presume you're saying, "if the user
were able to specify a custom forwarding symbol to use instead of
`category', then ..."

I'm not sure it's a good idea though, as in many cases overlay lookups
are implicit, so there's no easy/clean way to specify what symbol to use
(instead of `category').

-Miles

-- 
"Suppose He doesn't give a shit?  Suppose there is a God but He
just doesn't give a shit?"  [George Carlin]

Re: Overlays category - could this be made buffer local?

[Lennart Borgman (gmail)]

Miles Bader wrote:
> "Lennart Borgman (gmail)" <lennart.borgman@gmail.com> writes:
>>      If OVERLAY does not record any value for that
>>      property, but it does have a `category' property which is a
>>      symbol, that symbol's PROP property is used.  Otherwise, the value
>>      is `nil'.
>>
>> If 'category where allowed to be a symbol then buffer local values could
>> be set.
> 
> `category' is already a symbol.  I presume you're saying, "if the user
> were able to specify a custom forwarding symbol to use instead of
> `category', then ..."

Sorry, I meant "to be a variable containing a symbol". Would that be any 
problem?

> I'm not sure it's a good idea though, as in many cases overlay lookups
> are implicit, so there's no easy/clean way to specify what symbol to use
> (instead of `category').
> 
> -Miles
>