New GNU ELPA package: expreg - Simple expand region

[Sacha Chua]

    Summary: Simple expand region
   Requires: emacs-29.1
    Website: https://github.com/casouri/expreg
   Keywords: text editing 
 Maintainer: Yuan Fu <casouri@gmail.com>
     Author: Yuan Fu <casouri@gmail.com>

This is just like expand-region, but (1) we generate all regions at
once, and (2) should be easier to debug, and (3) we out-source
language-specific expansions to tree-sitter. Bind ‘expreg-expand’
and ‘expreg-contract’ and start using it.

Note that if point is in between two possible regions, we only keep
the region after point. In the example below, only region B is kept
(“|” represents point):

    (region A)|(region B)

Expreg also recognizes subwords if ‘subword-mode’ is on.


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