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-rw-r--r--Master/texmf-dist/tex/latex/flippdf/flippdf.sty26
1 files changed, 21 insertions, 5 deletions
diff --git a/Master/texmf-dist/tex/latex/flippdf/flippdf.sty b/Master/texmf-dist/tex/latex/flippdf/flippdf.sty
index 262b6efcfdd..42b7aaaf4aa 100644
--- a/Master/texmf-dist/tex/latex/flippdf/flippdf.sty
+++ b/Master/texmf-dist/tex/latex/flippdf/flippdf.sty
@@ -31,18 +31,34 @@
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{flippdf}%
- [2020/10/11 1.0b Horizontal flipping of pages with pdfLaTeX]
+ [2020/10/17 1.1 Horizontal flipping of pages with pdfLaTeX]
\RequirePackage{everypage}[2007/06/20]
+\RequirePackage{iftex}
+\AtBeginDocument{%
+ \ifpdf
+ \relax
+ \else
+ \PackageError{flippdf}{%
+ package only works in pdf output mode}%
+ \fi}
\newif\if@sc@flippdf
\newcommand\FlipPDF{\@sc@flippdftrue}
\newcommand\UnFlipPDF{\@sc@flippdffalse}
\FlipPDF
\DeclareOption{off}{\UnFlipPDF}
\ProcessOptions
-\AddEverypageHook{%
- \if@sc@flippdf
- \pdfliteral direct {-1 0 0 1 \strip@pt\paperwidth\space 0 cm}
- \fi}
+\ifpdftex
+ \AddEverypageHook{%
+ \if@sc@flippdf
+ \pdfliteral direct {-1 0 0 1 \strip@pt\paperwidth\space 0 cm}%
+ \fi}%
+\fi
+\ifluatex
+ \AddEverypageHook{%
+ \if@sc@flippdf
+ \pdfextension literal direct {-1 0 0 1 \strip@pt\paperwidth\space 0 cm}%
+ \fi}%
+\fi
\endinput
%%
%% End of file `flippdf.sty'.