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%%
%% This is file `xltxtra.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% xltxtra.dtx (with options: `package')
%% ____________________________
%% The XLTXTRA package
%% (C) 2006-2016 Will Robertson
%% License information appended
%%
\ProvidesPackage{xltxtra}
[2016/01/21 v0.6 Improvements for the "XeLaTeX" format]
\RequirePackage{ifluatex}
\ifluatex
\PackageWarningNoLine {xltxtra} {^^J
XLTXTRA IS TO BE USED ONLY UNDER XETEX.
LOAD FONTSPEC DIRECTLY, INSTEAD.^^J
ABORTING LOADING%
}
\RequirePackage{fontspec}
\expandafter \endinput
\fi
\RequirePackage{ifxetex}
\RequireXeTeX
\RequirePackage{fontspec}
\RequirePackage{realscripts}
\newif\if@xxt@nosscript@
\newif\if@xxt@nologos@
\DeclareOption{no-sscript}{\@xxt@nosscript@true}
\DeclareOption{no-logos}{\@xxt@nologos@true}
\ProcessOptions*
\RequirePackage{metalogo}
\if@xxt@nologos@
\let\TeX\original@TeX
\let\LaTeX\original@LaTeX
\let\LaTeXe\original@LaTeXe
\fi
\newcommand*\TeX@logo@spacing[6]{%
\PackageWarning{xltxtra}{%
Use of \protect\TeX@logo@spacing\space is deprecated,\MessageBreak
recommend to use commands from package `metalogo' instead}
\setlogokern{Te}{#1}%
\setlogokern{eT}{#1}%
\setlogokern{eX}{#2}%
\setlogokern{Xe}{#2}%
\setlogodrop{#3}%
\setlogokern{La}{#4}%
\setlogokern{aT}{#5}%
\setlogokern{eL}{#6}}
\if@xxt@nosscript@
\DeclareRobustCommand*\textsubscript{%
\@ifstar{\realsubscript}{\fakesubscript}}
\DeclareRobustCommand*\textsuperscript{%
\@ifstar{\realsuperscript}{\fakesuperscript}}
\fi
\ExplSyntaxOn
\newcommand*\vfrac[2]{
\fontspec_if_fontspec_font:TF
{
\fontspec_if_opentype:TF
{
{\addfontfeature{VerticalPosition=Numerator}#1}
\textfractionsolidus
{\addfontfeature{VerticalPosition=Denominator}#2}
}
{
{\addfontfeature{VerticalPosition=Superior}#1}
\textfractionsolidus
{\addfontfeature{VerticalPosition=Inferior}#2}
}
}
{
\PackageError {xltxtra}
{ \string\vfrac\space~can~only~be~used~with~fontspec~fonts }
{ Nothing~more~to~tell. }
}
}
\ExplSyntaxOff
\newcommand\namedglyph[1]{%
\@tempcnta=\XeTeXglyphindex "#1"\relax
\ifnum\@tempcnta>0
\XeTeXglyph\@tempcnta
\else
\xxt@namedglyph@fallback{#1}%
\fi}
\newcommand\xxt@namedglyph@fallback[1]{[#1]}
\ExplSyntaxOn
\seq_new:N \l__xetex_showhyphens_seq
\box_new:N \l__xetex_show_hyphens_wrapping_box
\box_new:N \l__xetex_show_hyphens_temp_box
\box_new:N \l__xetex_show_hyphens_final_box
\box_new:N \g__xetex_show_hyphens_word_box
\cs_new_protected:Npn \xetex_show_hyphens:n #1
{
\box_clear:N \l__xetex_show_hyphens_final_box
% split the input into items
\seq_set_split:Nnn \l__xetex_showhyphens_seq { ~ } { #1 }
% hyphenate all items
\seq_map_function:NN \l__xetex_showhyphens_seq \xetex_hyphenate_word:n
% set a box to the maximum dimension to force a Underfull \hbox warning
\hbox_set_to_wd:Nnn \l__xetex_show_hyphens_final_box { \c_max_dim }
{
\hbox_unpack_clear:N \l__xetex_show_hyphens_final_box
}
}
\cs_new_protected:Npn \xetex_hyphenate_word:n #1
{
\vbox_set:Nn \l__xetex_show_hyphens_wrapping_box
{% build a paragraph with the word with a very narrow line width
\dim_set:Nn \hsize { 1sp }
% disregard spurious messages
\hbadness = \c_ten_thousand
\dim_set:Nn \hfuzz { \c_max_dim }
% clear possible values of \everypar and other parameters
\everypar={}
\skip_set:Nn \leftskip { 0pt }
\skip_set_eq:NN \rightskip \leftskip
% skip the first step
\pretolerance = \c_minus_one
% avoid the indentation and add a skip to allow hyphenation
\noindent
\skip_horizontal:n { 0pt }
#1
\par
\hbox_gset:Nn \g__xetex_show_hyphens_word_box {}
% start a recursion to dismantle the paragraph just built
\xetex_show_hyphens_split:
% the result is put into \g__xetex_show_hyphens_word_box
}
% add the box to the final container
\hbox_set:Nn \l__xetex_show_hyphens_final_box
{
\hbox_unpack_clear:N \l__xetex_show_hyphens_final_box
\hbox_unpack_clear:N \g__xetex_show_hyphens_word_box
}
}
\cs_new_protected:Npn \xetex_show_hyphens_split:
{
\unskip % remove the interline glue
\unpenalty % remove possible penalties
% get the last line
\box_set_to_last:N \l__xetex_show_hyphens_temp_box
\box_if_empty:NF \l__xetex_show_hyphens_temp_box
{% if there is a last line unpack it into a container
\hbox_gset:Nn \g__xetex_show_hyphens_word_box
{% the order is last to first
\hbox_unpack_clear:N \l__xetex_show_hyphens_temp_box
\unskip\unskip % remove spaces
\hbox_unpack_clear:N \g__xetex_show_hyphens_word_box
}
% restart the recursion
\xetex_show_hyphens_split:
}
}
\cs_set_eq:NN \showhyphens \xetex_show_hyphens:n
\ExplSyntaxOff
%%
%% Copyright (C) 2006-2016 by Will Robertson <wspr81@gmail.com>
%%
%% Distributable under the LaTeX Project Public License,
%% version 1.3c or higher (your choice). The latest version of
%% this license is at: http://www.latex-project.org/lppl.txt
%%
%% This work is "maintained" (as per LPPL maintenance status)
%% by Will Robertson.
%%
%% This work consists of the file xltxtra.dtx
%% and the derived files xltxtra.sty,
%% xltxtra.ins, and
%% xltxtra.pdf.
%%
%%
%% End of file `xltxtra.sty'.
|
