Re: narrowing considered harmful

[Stefan Monnier]

>> I wouldn't worry about it.  It can even be a bad idea (set-marker to
>> nil requires scanning the whole list of markers, so it can take a while.
>> It can be more efficient to let the GC collect them later on).
>> 
>> 
>> Stefan

> Good to know this. The manual contains this:

> ,----[ (info "(elisp)Overview of Markers") ]
> |      ;; When you are finished using a marker, make it point nowhere.
> |      (set-marker m1 nil)
> |           => #<marker in no buffer>
> `----

> Should that be changed?

Not necessarily: whether it's better to nil them explicitly or to leave
them as they are depends on the specific case.


        Stefan