Alceu Frigeri submitted the

            xstacks

package.

Version: 1.0a 2026-01-04 License: lppl1.3c agpl3

Summary description: Dedicated global stacks implementations

Announcement text:

This Package offers 4 alternative ways of solving the problem of preserving tokens past the end of a variable number of nested groups. Two based on the aftergroup primitive and two based on stacks are implemented.

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The package’s Catalogue entry can be viewed at https://ctan.org/pkg/xstacks

The package’s files themselves can be inspected at https://mirrors.ctan.org/macros/latex/contrib/xstacks/

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Thanks for the upload.

For the CTAN Team Vincent Goulet

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