%% \CheckSum{11}
% \iffalse
% File: centerlastline.dtx
% Copyright (C) 2020 Miguel V. S. Frasson (mvsfrasson@gmail.com)
%
% This package may be distributed under the terms of the LaTeX
% Project Public License, as described in lppl.txt in the base
% LaTeX distribution, either version 1.2 or (at your option)
% any later version.
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{doc}
\usepackage[T1]{fontenc}
\usepackage{xcolor,lipsum,centerlastline,microtype}
%\usepackage[margin=1.6in]{geometry}
\begin{document}
  \DocInput{centerlastline.dtx}
\end{document}
%</driver>
% \fi
%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% \StopEventually
%
% \changes{1.0}{2020/10/12}{Initial version}
%
% \MakeShortVerb+
%
% \title{\textsf{centerlastline}: last line centered}
% \author{Miguel V.\ S.\ Frasson\\(\texttt{mvsfrasson@gmail.com})}
% \date{2020, oct. 12}
%
% \maketitle
%
% This package provides command +\centerlastline+, which sets
% paragraph style\footnote{Paragraph style like
% \texttt{\string\centering}, \texttt{\string\raggedright} or
% \texttt{\string\raggedleft}.} to typeset with no indentation and
% last line centered, an arrangement known as \emph{spanish
% paragraph}.  It is a not-so-frequent composition, useful to finish a
% large paragraph of text, at the end of chapters, prologues, back
% cover of books, etc.  It can be used as an environment
% +centerlastline+.
%
% In command form +\centerlastline+, user must take care that the text
% ends with a new paragraph (either a blank line or a +\par+), to
% ensure that the paragraph style +\centerlastline+ is active at the
% end of the paragraph.  In environment form, this is automatic.
%
% Below an example of
% such paragraph\ldots\bigskip
%
% \begin{centerlastline}
%   \color{blue}\lipsum[1]
% \end{centerlastline}\bigskip
%
% \noindent \ldots{} produced with\bigskip
%
% \noindent
% +\begin{centerlastline}+\\
% +  \color{blue}\lipsum[1]+\\
% +\end{centerlastline}+\medskip
%
% \noindent or\medskip
%
% \noindent +{\centerlastline+\\+   \color{blue}\lipsum[1]\par}+
%
% \clearpage
% \section*{Code}
%
% Identidication of the package.
%    \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{centerlastline}[2020/10/12 v1.0 Last line centered (spanish par.)]
%    \end{macrocode}
%
% \DescribeMacro{\centerlastline}
% Implementation of +\centerlastline+ based on +\centerlastline+ from
% ``memoir'' class. Definition with +\providecommand+ to avoid error
% if loaded with ``memoir'' class.
%    \begin{macrocode}
\providecommand{\centerlastline}{%
  \parindent=0pt
  \leftskip=0pt plus 1fil
  \rightskip=0pt plus -1fil
  \parfillskip=0pt plus 2fil}
%    \end{macrocode}
%
% Ending enviromnment with +\par+ to ensure paragraph style keeps
% effect until last paragraph.
%    \begin{macrocode}
\def\endcenterlastline{\par}
%    \end{macrocode}
% \Finale
%
\endinput
%
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%%   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
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%%   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         \~}