From 1c2a2cd0014693f1e1f894e498c2dc50dbb44f66 Mon Sep 17 00:00:00 2001
From: Daniel Opitz <daniel.opitz@mailbox.org>
Date: Thu, 3 May 2018 02:01:49 +0200
Subject: [PATCH] Fixed LaTeX errors on documentation PDF generation

---
 docs/flaskstyle.sty | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/docs/flaskstyle.sty b/docs/flaskstyle.sty
index 8a3f75c3..cd53c898 100644
--- a/docs/flaskstyle.sty
+++ b/docs/flaskstyle.sty
@@ -1,11 +1,17 @@
 \definecolor{TitleColor}{rgb}{0,0,0}
 \definecolor{InnerLinkColor}{rgb}{0,0,0}
 
+% Replace Unicode character 'PARTY POPPER' (U+1F389) with a non-breaking space.
+% pdfLaTeX doesn't support Unicode.
+\DeclareUnicodeCharacter{1F389}{\nobreakspace}
+
 \renewcommand{\maketitle}{%
   \begin{titlepage}%
     \let\footnotesize\small
     \let\footnoterule\relax
-    \ifsphinxpdfoutput
+    % Apply following fix only on PDF output, i.e. pdfoutput macro is not 
+    % undefined
+    \ifx\pdfoutput\undefined\else
       \begingroup
       % This \def is required to deal with multi-line authors; it
       % changes \\ to ', ' (comma-space), making it pass muster for