Composability of `difflib`

Feature or enhancement

Proposal:

I closed https://github.com/python/cpython/issues/144132 in favour to more gradual divide and conquer approach.

And this is the first part, which I think is the most valuable one.
It enables user to implement his own Matcher and Differ types to do all the nice things that difflib enables.

Given the current state of affairs, I don't think there were many ways to do it.
And in terms of nature of arguments provided to different functions, I only saw one.

Very much open to any suggestions / concerns.

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

https://discuss.python.org/t/algorithmic-complexity-of-difflib/105844/98

Linked PRs

• gh-145210

Comienza revisando el PR vinculado gh-145210 y la discusión de Discourse referenciada en la issue; después, inspecciona la implementación y la API pública de difflib de Python. El trabajo estará completo cuando el enfoque de composabilidad propuesto tenga un diseño definido y la contribución vinculada o los cambios resultantes aborden la propuesta.