Relevance search in Emacs

[Jean Louis]

Before weeks I was discussing and trying to find something that could
replace the `helm' in Emacs, so that I spare using external
libraries. Then discussion with Drew clarified that what I am looking
is rather type of a filter. But I would like to filter by
relevance. Some packages like `ivy' and `helm' do offer relevance
searches. Yet I wish to spare the basic package from using external
functions. This way me or other users can use any completion or Emacs
built-in completion function which is generally more user friendly in
my opinion.

Chapter 12. Full Text Search
https://www.postgresql.org/docs/current/textsearch-intro.html#TEXTSEARCH-MATCHING

What is good is that database PostgreSQL offers built-in relevance
searches and that spares coding and using other packages, so I am
transitioning to minimize usage of helm or take it completely out and
replace it with tabulated-list-mode that will offer options to act on.

I hope to replace the TAB in tabulated-list-mode so that it can offer
screen of various options or completion from minibuffer for actions
that may be invoked on a specific item.

In the manual there is little I can find related to "relevance". If
somebody knows if there is some "relevance" search in Emacs built-in
packages let me know, otherwise I will let database do the job.