%%
%% This is file `lua-ul.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% lua-ul.dtx  (with options: `package')
%% 
%% Copyright (C) 2020-2021 by Marcel Krueger
%%
%% This file 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.
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage
  {lua-ul}
  [2021/05/12 v0.1.4 Underlining and related functionality for LuaTeX]

\ifx\directlua\undefined
  \PackageError{lua-ul}{LuaLaTeX required}%
  {Lua-UL requires LuaLaTeX.
   Maybe you forgot to switch the engine in your editor?}
\fi
\directlua{require'lua-ul'}
\RequirePackage{xparse}
\newif\ifluaul@predefined
\newif\ifluaul@soulnames
\luaul@predefinedtrue
\DeclareOption{minimal}{\luaul@predefinedfalse}
\DeclareOption{soul}{\luaul@soulnamestrue}
\ProcessOptions\relax
\protected\def\luaul@maybedefineuse#1#2{%
  \unless\ifcsname#1\endcsname
    \expandafter\xdef\csname#1\endcsname{#2}%
  \fi
  \csname#1\endcsname
}
  \newcommand\luaul@defaultcontext{%
    \number\dimexpr1ex
    @\unless\ifx\undefined\LuaCol@Attribute
      \the\LuaCol@Attribute
    \fi
  }
\NewDocumentCommand\newunderlinetype
    { E{*}{{}} m O{\luaul@defaultcontext} m }{%
  \newcommand#2{}% "Reserve" the name
  \protected\def#2{%
    \expandafter\luaul@maybedefineuse
      \expanded{{\csstring#2@@#3}}%
      {\LuaULSetUnderline
        \LuaULNewUnderlineType#1{#4\hskip0pt}%
  }}%
}
\ifluaul@predefined
  \newcommand\luaul@highlight@color{yellow}
  \def\luaul@@setcolor\xcolor@#1#2{}
  \newcommand\luaul@setcolor[1]{%
    \ifx\XC@getcolor\undefined
      \def\luaul@currentcolor{#1}%
    \else
      \begingroup
        \XC@getcolor{#1}\luaul@tmpcolor
      \expanded{\endgroup
        \def\noexpand\luaul@currentcolor{%
          \expandafter\luaul@@setcolor\luaul@tmpcolor}}%
    \fi
  }
  \newcommand\luaul@applycolor{%
    \ifx\XC@getcolor\undefined
      \color{\luaul@currentcolor}%
    \else
      \expandafter\XC@undeclaredcolor\luaul@currentcolor
    \fi
  }
\NewDocumentCommand\LuaULSetHighLightColor{om}{%
  \edef\luaul@highlight@color{\IfValueTF{#1}{[#1]{#2}}{#2}}%
}
  \newunderlinetype\@underLine{%
    \leaders\vrule height -.65ex depth .75ex
  }
  \NewDocumentCommand\underLine{+m}{{\@underLine#1}}

  \newunderlinetype\@strikeThrough{%
    \leaders\vrule height .55ex depth -.45ex
  }
  \newunderlinetype\colored@strikeThrough[\number\dimexpr1ex@%
                                          \luaul@currentcolor]{%
    \luaul@applycolor
    \leaders\vrule height .55ex depth -.45ex
  }
  \NewDocumentCommand\strikeThrough{o+m}{{%
    \IfValueTF{#1}{%
      \luaul@setcolor{#1}%
      \colored@strikeThrough
    }\@strikeThrough%
    #2%
  }}

  \newunderlinetype\@highLight[\number\dimexpr1ex@%
                               \luaul@currentcolor]{%
    \luaul@applycolor
    \leaders\vrule height 1.75ex depth .75ex
  }
  \NewDocumentCommand\highLight{O{\luaul@highlight@color}+m}{{%
    \luaul@setcolor{#1}%
    \@highLight#2%
  }}
  \ifluaul@soulnames
    \let\textul\underLine \let\ul\textul
    \let\textst\strikeThrough \let\st\textst
    \let\texthl\highLight \let\hl\texthl
  \fi
\fi
\ifx \reset@font \normalfont
  \let \reset@font \relax
  \DeclareRobustCommand \reset@font {%
    \normalfont
    \LuaULResetUnderline*%
  }
\else
  \MakeRobust \reset@font
  \begingroup
    \expandafter \let
        \expandafter \helper
        \csname reset@font \endcsname
  \expandafter \endgroup
  \expandafter \gdef
    \csname reset@font \expandafter \endcsname
  \expandafter {%
    \helper%
    \LuaULResetUnderline*%
  }
\fi
\output\expandafter\expandafter\expandafter{%
  \expandafter\expandafter\expandafter\LuaULResetUnderline
  \expandafter\expandafter\expandafter*%
  \expandafter\@firstofone\the\output%
}
%% 
%%
%% End of file `lua-ul.sty'.
