tokmap: iterate over a token list expandably, without dropping spaces or braced groups.
Usage: \tokmap <command> { <tokens> } applies command over the token list tokens.
Space tokens, left and right braces are replaced with the marker tokens \tokmap@space,
\tokmap@bgroup, and \tokmap@egroup respectively (who are \ifx-equal to themselves
exclusively). For convenience, command may contain multiple tokens.
It is assumed that { and } are the only characters with category codes 1
(beginning of group) and 2 (end of group) respectively.
Expandable.
This package may be used in LaTeX by \usepackage{tokmap}, or
in plain TeX and other formats by \input{tokmap}.
See the visualtoks package for an example application.
Copyright (C) 2025 plante Version 1.0
This package is released under the LaTeX Project Public License (LPPL) 1.3c.