bug#44550: 28.0.50; proposal for tabulated-list-mode to provide narrowing incremental search

[Jean Louis]

* Drew Adams <drew.adams@oracle.com> [2020-11-16 19:24]:
> > Incremental filtering while user is typing might cause too sluggish
> > response, so I'm fine with the current non-incremental filtering.
> 
> It should be optional, and it should be controllable
> by users.

Same thinking. It need not be automatically turned on but only when
user makes derived mode and binds the key to the function.

I would be happy if all elements of tabulated-list-entries are
concatenated with spaces to be searchable by such feature. Of course
it would be even better if programmer can decide to search only one column.

Feature description from Icicles could be used there as well.