[luatex] Confirm change in TL 2016-pretest vs. TL 2015 behavior: dvilualatex fails because of pdfpageheight

[Meer, Hans van der]

On 18 May 2016, at 07:38, Will Robertson <will at wspr.io<mailto:will at wspr.io>> wrote:
It should be fine to have something like

   \IfFileExists{luatex85.sty}{\usepackage{luatex85}}{}

for the time being. This should catch 99.999% of users?

This is the macro I am using to find if a file exists and act upon it. Hope this helps.

% .... File finding ...........................................................

% If #1.#2 or #1 exists execute #3{#1} and return \iftrue else only return \iffalse.
% do not forget to close with \fi or with \else...\fi
% Use #3=\gobbleoneargument to effectively kill #3{file}.
% Use #3=\relax to leave file behind.
% Use #3={\def\macrotodefine} to define file as macro content.
\def\iffilewithsuffix#1#2#3{%
\let\mynext\iftrue
\doiffileelse{#1.#2}% existence of #1.#2 tested
{#3{#1.#2}}% #1.#2 does exist
{\doiffileelse{#1}% existence of #1 tested
{#3{#1}}% #1 exists
{\let\mynext\iffalse}% neither file exists remove macro call
}%
\mynext
}
\def\ifexistfilewithsuffix#1#2{%
\let\mynext\iftrue
\doifnotfile{#1.#2}{\doifnotfile{#1}{\let\mynext\iffalse}}%
\mynext
}

Hans van der Meer



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