Fix subtitle footer presentation (#81)

Add | and correct ordering + spacing

.gitignore

@@ -1,3 +1,16 @@
+# cannot link to sty for windows support
+minimal_examples/*.sty
+minimal_examples/*.pdf
+minimal_examples/logos
+
+multi_lang_examples/*.sty
+multi_lang_examples/*.pdf
+multi_lang_examples/logos
+
+compare_examples/*.sty
+compare_examples/*.pdf
+compare_examples/logos
+
 ## Core latex/pdflatex auxiliary files:
 *.aux
 *.lof
@@ -296,4 +309,4 @@ tmp/
 latex-beamer-pure-minimalistic.wiki/
 __latexindent_temp.tex
 .env
-.devcontainer
+.devcontainer

beamerouterthemepureminimalistic.sty

@@ -121,8 +121,12 @@
       \vbox to\myfooterheight{%
         \vfil%
         \insertshorttitle{} $~|~$ %
-        \insertshortauthor{} $\quad$%
-        \insertshortsubtitle{}\par%
+        \ifx\insertsubtitle\@empty%
+          \else%
+          \insertshortsubtitle{} $~|~$%
+        \fi%
+        \insertshortauthor{}
+        \par%
         \ifthenelse{\boolean{nofooterlogo}}{}{
           \showpagenum
         }

beamertheme-pure-minimalistic-demo.tex

@@ -40,7 +40,7 @@
 \title[short title]{This is the normal length of a research paper:
 always longer than you would expect}
 \author{Kai Norman Clasen}
-\subtitle{Subtitle}
+% \subtitle[subtitle]{Subtitle}
 \institute{Institute name}
 \date{\today}
 

minimal_examples/subtitle.tex

@@ -0,0 +1,21 @@
+\documentclass[aspectratio=169]{beamer}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usetheme[darkmode]{pureminimalistic}
+
+\title[Short title]{Long title}
+\subtitle[Short subtitle]{Long subtitle}
+\author{Kai Norman Clasen}
+\institute{}
+\date{\today}
+
+\begin{document}
+  \maketitle
+
+  \begin{frame}{Subtitle Behavior}
+    \begin{itemize}
+      \item Long subtitle has bigger font and is on its own line on \emph{titlepage}
+      \item Short subtitle comes after short title in footer before \emph{author}
+    \end{itemize}
+  \end{frame}
+\end{document}