blob: 212b05fc076b9b1e104e8c3c065f834cb6b0e590 (
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\newread\ptx@temp_read
\def\iffile{%
\ifnext[
{\ptx@iffile}
{\ptx@iffile[]}%
}
\def\ptx@iffile[#1]#2{%
\directlua{
local f = kpse.find_file("\luaescapestring{#2}"\reverse\iffemptystring{#1}{, "#1"})
local x = f and "firstoftwo" or "secondoftwo"
tex.print(\the\texcatcodes, "\noexpand\\" .. x)
}%
}
\long\def\ifffile{%
\ifnext[
{\ptx@ifffile}
{\ptx@ifffile[]}%
}
\long\def\ptx@ifffile[#1]#2#3{%
\iffile[#1]{#2}{#3}{}%
}
\long\def\inputfileor{%
\ifnext[
{\ptx@inputfileor}
{\ptx@inputfileor[]}%
}
\long\def\ptx@inputfileor[#1]#2{%
\iffile[#1]{#2}{\input{#2}\relax}%
}
\newwrite\ptx@auxfile
\def\ptx@write_toaux{%
\ifnext*
{\gobbleoneand{\write\ptx@auxfile}}
{\immediate\write\ptx@auxfile}%
}
\let\writeout\ptx@write_toaux
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