easyformat (9apr17)

git-svn-id: svn://tug.org/texlive/trunk@43724 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 152 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/latex/easyformat/easyformat.sty b/Master/texmf-dist/tex/latex/easyformat/easyformat.sty
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                                       %
+% easyformat  Adds easier bolds and italics to LaTeX.                   %
+% Copyright (C) 2017  Evert Provoost <evert.provoost@gmail.com>         %
+%                                                                       %
+% This program is free software: you can redistribute it and/or modify  %
+% it under the terms of the GNU General Public License as published by  %
+% the Free Software Foundation, either version 3 of the License, or     %
+% (at your option) any later version.                                   %
+%                                                                       %
+% This program is distributed in the hope that it will be useful,       %
+% but WITHOUT ANY WARRANTY; without even the implied warranty of        %
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         %
+% GNU General Public License for more details.                          %
+%                                                                       %
+% You should have received a copy of the GNU General Public License     %
+% along with this program.  If not, see <http://www.gnu.org/licenses/>. %
+%                                                                       %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+%% NOTE TO FUTURE: Italics correction works because of \maybe@ic.
+%                  this macro might disappear in LaTeX3...
+%
+%                  If the New Font Selection Scheme would change,
+%                  stuff WILL break...
+
+
+%% Administration...
+\NeedsTeXFormat{LaTeX2e} % Why no date? We'll leave that to the imports.
+\ProvidesPackage{easyformat}
+	[2017/04/09 v1.1.0 Adds easier bolds and italics.]
+
+
+%% Import this handy package
+\RequirePackage{ltxcmds}[2011/04/18]
+
+
+%% Public macros
+% Add macros to switch the syntax on or off.
+\newcommand*{\setundact}{
+	\catcode`\_=\active
+}
+
+\newcommand*{\setundsub}{
+	\catcode`\_=8
+}
+
+% Add some macros which do small parts of what \normalfont does.
+\newcommand*{\nrshape}{%
+	\fontshape{\shapedefault}%
+	\selectfont%
+}
+
+\newcommand*{\nrseries}{%
+	\fontseries{\seriesdefault}%
+	\selectfont%
+}
+
+
+%% CONSTANTS
+% Yes I could use \sb but that is a dependency...
+\let\EFOR@subscript=_
+
+% To test what style we're currently in.
+\def\EFOR@it{it}
+\def\EFOR@bf{bx}
+
+
+%% UTILS
+% So we can remove an unnecessary undescore when starting/stopping bold.
+\newcommand*{\EFOR@util@removeChar}[1]{}
+
+% Do the first when in mathmode, the second if not.
+\newcommand*{\EFOR@util@ifmmode}{%
+	\ifmmode
+		\expandafter\@firstoftwo
+	\else
+		\expandafter\@secondoftwo
+	\fi
+}
+
+% Do the first when equal, the second if not (first or second of
+% what comes *after* \EFOR@util@ifx{...}{...} that is).
+\newcommand*{\EFOR@util@ifx}[2]{%
+	\ifx#1#2\relax
+		\expandafter\@firstoftwo
+	\else
+		\expandafter\@secondoftwo
+	\fi
+}
+
+
+%% Formating handling
+% Switch italics on or off.
+\newcommand*{\EFOR@handle@italic}{%
+	\EFOR@util@ifx{\f@shape}{\EFOR@it}
+	% \maybe@ic adds italics correction if needed.
+	% (might stop working in LaTeX3?)
+	{\nrshape\maybe@ic}
+	{\itshape}%
+}
+
+% Switch boldface on or off.
+\newcommand*{\EFOR@handle@bold}{%
+	\EFOR@util@ifx{\f@series}{\EFOR@bf}
+	{\nrseries}
+	{\bfseries}%
+}
+
+
+%% Activate the systems!
+% Prepare the syntax in the preamble.
+\setundact
+
+% Now finally add the new syntax in the document part.
+\AtBeginDocument{
+	% Just to be sure
+	\setundact
+	
+	% This is where the magic happens (also differentiates between
+	% the text and math mode.)
+	% It is \protected because it should work in eg. \section{}
+	\protected\def_{\EFOR@util@ifmmode
+		{\EFOR@subscript}
+		{\ltx@ifnextchar@nospace_
+			% \EFOR@util@removeChar removes the second underscore.
+			{\EFOR@handle@bold\EFOR@util@removeChar}
+			{\EFOR@handle@italic}%
+		}%
+	}
+}
+
+% Cleanup
+\AtEndDocument{
+	% Why no \def_\undefined?
+	% Because if we use this syntax in eg. \section{},
+	% the macro should still work in the .aux file...
+	\setundsub
+}
+
+
+%% DONE!
+\endinput
+
+
+%% IMPLEMENTATION DETAILS:
+%% Why not \textit/bf\bgroup and \egroup?
+%      Well actualy that was the original solution. Hwoever this
+%      doesn't differentiate between ending itallics or ending
+%      boldface. The current solution does and this makes the syntax
+%      more predictable and generally more useful.
\ No newline at end of file