% \iffalse meta-comment
%
% Copyright (c) 2007 by Andreas Bühmann
% Copyright (c) 2025 by Michael Ummels <michael@ummels.de>
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3c
% of this license or (at your option) any later version.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Michael Ummels.
%
% This work consists of the files fontaxes.dtx, fontaxes.ins and
% the derived file fontaxes.sty.
%
%<*driver>
\documentclass[a4paper]{ltxdoc}

\usepackage[T1]{fontenc}
\usepackage{fontaxes}
\usepackage{hypdoc}
\usepackage[toc,enum,bib,lineno]{tabfigures}
\usepackage[scale=0.95]{cantarell}
\usepackage[narrow]{inconsolata}
\usepackage{microtype}

\hypersetup{
  bookmarksnumbered,
  colorlinks=false,
  pdfborder={0 0 0},
}

% Hack in order to get quotes in verbatim mode right
\DeclareEncodingSubset{TS1}{zi4}{1}

\renewcommand\sfdefault{cantarell-OsF}
\renewcommand\familydefault{\sfdefault}
\renewcommand\baselinestretch{1.1}

\newcommand*\pkg[1]{\mbox{#1}}
\newcommand*\axis[1]{\textit{#1}}

\OnlyDescription

\begin{document}
\DocInput{fontaxes.dtx}
\end{document}
%</driver>
%\fi
%
% \GetFileInfo{fontaxes.sty}
%
% \title{The fontaxes package (deprecated)}
% \author{Michael Ummels}
% \date{\fileversion\quad\filedate}
% \maketitle
%
% \begin{abstract}
% \textbf{Deprecated:} The \pkg{fontaxes} package simulates multiple independent
% font selection axes on top of certain single NFSS axes: \axis{base family},
% \axis{figure style}, and \axis{figure alignment} on top of \axis{family};
% \axis{primary shape} and \axis{secondary shape} on top of \axis{shape};
% and \axis{math weight} and \axis{math figure alignment} on top of
% \axis{math version}.
% \end{abstract}
%
% \section{Introduction}
%
% When this package was conceived, \LaTeX\ support for fonts with italic
% small-caps or \emph{swash capitals} was limited and choosing such a font
% shape was only possible using the low-level command \cs{fontshape}. This
% package simplified access to such shapes by introducing new commands like
% \cs{swshape} and making combinations like \cs{itshape}\cs{scshape} work.
% With \LaTeX\ release 2020-02-02, that functionality was integrated
% into the kernel \cite{ltnews31}, so this package has lost its
% main \emph{raison d'être}.
% However, switching between different \emph{figure versions} is still
% a hassle with \LaTeX's font selection scheme \cite{nfss}, so all commands
% defined by \pkg{fontaxes} that deal with figure versions (e.g.\ \cs{lnfigures}
% and \cs{tbfigures}) have been incorporated into a new package called
% \pkg{figureversions}\footnote{\url{https://ctan.org/pkg/figureversions}},
% released in April 2025.
%
% For backwards compatibility and for ensuring a smooth transition, the
% \pkg{fontaxes} package has also been rewritten and is now a thin wrapper
% around the \pkg{figureversions} package, providing additional commands like
% \cs{fontprimaryshape}, which have been used in documents and (font) packages
% in the wild.
%
% \section{Migration to \pkg{figureversions}}
%
% As a document author, if you have explicitly loaded \pkg{fontaxes}, you can
% almost surely just replace |\usepackage{fontaxes}| by
% |\usepackage{figureversions}|. Only if you have used \cs{fontprimaryshape}
% or \cs{fontsecondaryshape} in your document, you need to replace that by the
% standard \LaTeX\ command \cs{fontshape}.
%
% As a font package author, you might have used one of the commands
% \cs{fa@naming@exception} or the synonymous command
% \cs{fontaxes@naming@exception} to define a new figure version like so:
% \begin{quote}
%   |\fa@naming@exception{figures}{|\marg{figurestyle}|{proportional}}|\marg{suffix1} \\
%   |\fa@naming@exception{figures}{|\marg{figurestyle}|{tabular}}|\marg{suffix2}
% \end{quote}
% With the \pkg{figureversions} package, you can express both commands with a
% a single call to |\figureversions_new_figurestyle:nnn|. Since this is a
% \LaTeX3 command, you need to put this after \cs{ExplSyntaxOn} though:
% \begin{quote}
%   |\ExplSyntaxOn| \\
%   |\figureversions_new_figurestyle:nnn|\ \marg{figurestyle}\ \marg{suffix1}
%     \ \marg{suffix2} \\
%   |\ExplSyntaxOff|
% \end{quote}
% Note that there is no equivalent for other calls to |\fa@naming@exceptions|,
% which have no effect in this version of \pkg{fontaxes} anyway.
%
% \StopEventually{
% \begin{thebibliography}{9}
%
% \bibitem{ltnews31}
% \LaTeX\ News. Issue 31, February 2020.
% \url{https://www.latex-project.org/news/latex2e-news/ltnews31.pdf}
%
% \bibitem{nfss}
% \LaTeX\ Project Team:
% \LaTeXe\ font selection.
% \url{https://www.latex-project.org/help/documentation/fntguide.pdf}
%
% \end{thebibliography}
% }
%
% \section{Implementation}
% \AddToHook{sffamily}{\fontfigurealignment{tabular}}
%
%    \begin{macrocode}
%<*package>
\NeedsTeXFormat{LaTeX2e}[2018-04-01]
\DeclareRelease{v1}{2011-09-20}{fontaxes-v1.sty}
\DeclareCurrentRelease{v2}{2025-04-21}
\ProvidesExplPackage{fontaxes}{2025-05-17}{2.0}{Font selection axes (deprecated)}
%    \end{macrocode}
%    \begin{macrocode}
\msg_new:nnn { fontaxes } { unsupported-axis }
  { Axis~`#1`~not~supported~for~command~\fa@naming@exception~\msg_line_context: }
\msg_new:nnn { fontaxes } { unsupported-alignment }
  { Value~`#1'~not~supported~as~figure~alignment~\msg_line_context: }
%    \end{macrocode}
% If the \pkg{figureversions} package exists, we require it and define some
% compatibility macros.
%    \begin{macrocode}
\file_if_exist:nTF { figureversions.sty }
  {
    \RequirePackage { figureversions }
    \cs_generate_variant:Nn
      \__figureversions_new_figurestyle_proportional:nn { V }
    \cs_generate_variant:Nn
      \__figureversions_new_figurestyle_tabular:nn { V }
    \cs_new_eq:NN \fontprimaryshape \fontshape
    \cs_new_eq:NN \fontsecondaryshape \fontshape
    \cs_new:Npn \fa@naming@exception #1#2#3
      {
        \str_if_eq:nnTF {#1} {figures}
          {
            \str_set:Ne \l_tmpa_str { \tl_head:n { #2 } }
            \str_set:Ne \l_tmpb_str { \tl_item:nn { #2 } { 2 } }
            \str_if_eq:VnTF \l_tmpb_str { proportional }
              {
                \__figureversions_new_figurestyle_proportional:Vn
                  \l_tmpa_str { #3 }
              }
              {
                \str_if_eq:VnTF \l_tmpb_str { tabular }
                {
                  \__figureversions_new_figurestyle_tabular:Vn
                    \l_tmpa_str { #3 }
                }
                {
                  \msg_warning:nnV { fontaxes } { unsupported-alignment }
                    \l_tmpb_str
                }
              }
          }
          { \msg_warning:nnn { fontaxes } { unsupported-axis } { #1 } }
      }
  }
  {
%    \end{macrocode}
% Otherwise, we simply load version~1 of the package.
%    \begin{macrocode}
    \ExplSyntaxOff
    \InputIfFileExists{fontaxes-v1.sty}{}{
      \PackageError{fontaxes}{Failed~to~find~file~`fontaxes-v1.sty'}%
        {Your~installation~seems~broken.~Try~reinstalling~the~package.}
    }
    \ExplSyntaxOn
  }
%</package>
%    \end{macrocode}
% \RemoveFromHook{sffamily}
% \Finale