Promote difflib._mdiff() to public API

[kesara]

Feature or enhancement

Proposal:

Using _mdiff() method in difflib is useful to crate a custom HTML table different to what make_table() generates.
The _mdiff() method was last changed 9 years ago¹. So the method seems to be stable.
Consider promoting this method to the public API.

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/make-difflib-mdiff-a-standard-method/72236/1

Linked PRs

• gh-129922: Promote _mdiff to a public function #156823

Footnotes

1. https://github.com/python/cpython/blame/main/Lib/difflib.py#L1344 ↩

[jeffkaufman]

This would be valuable for icdiff, which has been using _mdiff since 2009.