Re: [RFC, experimental] save_{excursion,restriction}

[Stefan Monnier]

>> I think you'll be better off making it into a standard Lisp_Object such
>> as pseudovector or a Lisp_Misc.  The fact that they're only used on the
>> specpdl and hence managed via xmalloc+xfree shouldn't make them
>> that special.

> OK. The only question is: should `excursion' field of struct buffer
> be special, like `undo_list', or handled as usual? This patch assumes
> first scenario, but it's not a problem to follow the second one.

If the excursion is made into a Lisp_Object (as a pseudovector of
lisp_misc), then you don't need to have an `excursions' field in
`struct buffer', save_excursion_save can just return the excursion
object (i.e. the PVEC_EXCURSION in your code).


        Stefan