% \iffalse meta-comment
%
% Copyright (C) 2018 by Ruben Giannotti 
% <ruben dot giannotti at gmx dot net>
% -------------------------------------------------------
% 
% 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 Ruben Giannotti.
%
% This work consists of the files
%   lccaps.dtx 
%   lccaps.ins
% and the derived file lccaps.sty.
%
% \fi
%
% \iffalse
%<*driver>
\ProvidesFile{lccaps.dtx}
%</driver>
%<package>\NeedsTeXFormat{LaTeX2e}
%<package>\ProvidesPackage{lccaps}
%<*package>
  [2018/01/21 v1.0 Lowercased (spaced) small capitals (RG)]
%</package>
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{amssymb,parskip}
\usepackage{lccaps}
\providecommand*\pkg{\textsf}
\providecommand*\option{\textit}
\providecommand*\url{\texttt}
\providecommand*\email{\texttt}
\providecommand*\important{$\blacktriangleright$\space Important note:\space}
\EnableCrossrefs
\CodelineIndex
\begin{document}
  \DocInput{lccaps.dtx}
\end{document}
%</driver>
% \fi
%
% \CheckSum{60}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
%
% \changes{v1.0}{2018/01/21}{Initial version}
%
% \GetFileInfo{lccaps.dtx}
%
% \DoNotIndex{\newcommand,\newenvironment,\!,\@empty,\@gobble,\@gobbletwo}
% \DoNotIndex{\@ifpackageloaded,\@ifpackagewith,\@ifundefined,\@namedef}
% \DoNotIndex{\@nil,\@onlypreamble,\@tempa,\@tempb,\@tempswafalse,\def}
% \DoNotIndex{\@tempswatrue,\^,\-,\active,\begingroup,\catcode,\@car,\@cdr}
% \DoNotIndex{\edef,\else,\endgroup,\endinput,\expandafter,\fi,\if}
% \DoNotIndex{\if@tempswa,\ifcase,\ifnum,\ifx,\lccode,\let,\lowercase}
% \DoNotIndex{\MessageBreak,\next,\number,\numexpr,\or,\PackageError}
% \DoNotIndex{\PackageWarning,\PackageWarningNoLine,\strip@prefix,\@@end}
% \DoNotIndex{\relax,\space,\string,\DeclareOption,\ProcessOptions}
% \DoNotIndex{\meaning,\ifdefined,\csname,\chardef,\endcsname,\protect}
% \DoNotIndex{\input,\RequirePackage,\global,\ifcsname,\makeatother}
% \DoNotIndex{\@makeother,\the,\toks@}
%
% \title{The \pkg{lccaps} package\thanks{This document
%   corresponds to \pkg{lccaps}~\fileversion, dated \filedate.}}
% \author{Ruben Giannotti\thanks{\email{ruben dot giannotti at gmx dot net}}}
%
% \maketitle
%
% This tiny package serves the mere purpose of
% providing a uniform method to use
% lowercased small capitals (and spaced lowercased small capitals).
% It relies on the \pkg{iftex}, \pkg{textcase} and \pkg{microtype} package
% and comes with four new user macros.
%
% \DescribeMacro{\textlcc}
% This is the main feature.
% It produces forced lowercased \textlcc{small capitals}.
%
% \DescribeMacro{\spacedcaps}
% This is more of an auxiliary macro.
% But, it can be used at the user level of course.
% It is meant to be used as a prefix to |\textlcc| or |\textsc|
% which results in a slightly wider spacing between small capitals:
%
% \begin{center}
%   |\spacedcaps\textlcc{Spaced capitals}| \(\leadsto\)
%     \spacedcaps\textlcc{Spaced capitals}
% \end{center}
%
% \DescribeMacro{\textslcc}
% \DescribeMacro{\textssc}
% Those two are just shorthands for the last mentioned.
% Technically the very last one exceeds the scope of this package.
% It is a simple byproduct that should not be harmful.
%
% \StopEventually{}
%
%    \begin{macrocode}
\RequirePackage{iftex}
\RequirePackage{textcase}
\RequirePackage{microtype}
\protected\def\lcc@warning{\PackageWarning{lccaps}}
\DeclareRobustCommand\textlcc[1]{\textsc{\MakeTextLowercase{#1}}}
\def\spacedcaps#1{%
  \let\reserved@a=#1%
  \ifnum
    \ifx\reserved@a\textsc1\else
    \ifx\reserved@a\textlcc1\else
    0\fi\fi
  =1
    \expandafter\reserved@lcc
  \else
    \lcc@warning{The token preceeding \noexpand\spacedcaps
      wasn't meant to typeset small capitals, so nothing happend.}%
    \expandafter\reserved@a
  \fi
}
\def\reserved@lcc#1{%
  \expandafter\@spacedcaps\expandafter{\reserved@a{#1}}%
}
\ifXeTeX
  \def\@spacedcaps#1{\bgroup\addfontfeature{LetterSpace=5.0}#1\egroup}
\else
  \def\@spacedcaps{\textls[50]}
\fi
\DeclareRobustCommand\textslcc{\spacedcaps\textlcc}
\DeclareRobustCommand\textssc{\spacedcaps\textsc}
%    \end{macrocode}
%\Finale
\endinput