From b3c33d2f663c92f94640fd6b4267775f9d8955ad Mon Sep 17 00:00:00 2001
From: Stefan Huber <stefan.huber@fh-salzburg.ac.at>
Date: Thu, 3 Nov 2022 10:13:00 +0100
Subject: [PATCH] exsheet2: Fix \date

Invoking \date did not set the current date. Fix this. Required to
switch to datetime2 package.
---
 exsheet2-demo-aufgabenblatt.tex |  3 ++-
 exsheet2-demo-klausur-en.tex    |  2 +-
 exsheet2-demo-klausur.tex       |  2 +-
 exsheet2.cls                    | 12 ++++++++----
 4 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/exsheet2-demo-aufgabenblatt.tex b/exsheet2-demo-aufgabenblatt.tex
index b20d15e..c6f3f63 100644
--- a/exsheet2-demo-aufgabenblatt.tex
+++ b/exsheet2-demo-aufgabenblatt.tex
@@ -6,7 +6,8 @@
 \course{ILV Numerik und Industrielle Algorithmen}
 \curriculum{ITS}
 
-\date{21.10.2022}
+% Use current time if not set by \date
+%\date{2022-10-21}
 \semester{WS 2022}
 
 \author{Stefan Huber}
diff --git a/exsheet2-demo-klausur-en.tex b/exsheet2-demo-klausur-en.tex
index eba9461..22d41f6 100644
--- a/exsheet2-demo-klausur-en.tex
+++ b/exsheet2-demo-klausur-en.tex
@@ -9,7 +9,7 @@
 \course{ILV Network-oriented Software Engineering}
 \curriculum{ITS-B, ITSB-B, WIN}
 
-\date{21.10.2022}
+\date{2022-10-21}
 \semester{SS 2022}
 
 \author{Stefan Huber}
diff --git a/exsheet2-demo-klausur.tex b/exsheet2-demo-klausur.tex
index 6b60d1b..bcea46b 100644
--- a/exsheet2-demo-klausur.tex
+++ b/exsheet2-demo-klausur.tex
@@ -8,7 +8,7 @@
 \course{VO Microcontroller}
 \curriculum{ITS-B, ITSB-B}
 
-\date{21.10.2022}
+\date{2022-10-21}
 \semester{SS 2022}
 
 \author{Stefan Huber}
diff --git a/exsheet2.cls b/exsheet2.cls
index c9a5826..250ea65 100644
--- a/exsheet2.cls
+++ b/exsheet2.cls
@@ -23,7 +23,6 @@
 
 \@ifundefined{exsheetgerman}{
   \usepackage[american]{babel}
-  \usepackage[american]{isodate}
   \newcommand{\theexercise}{Exercise}
   \newcommand{\thepoint}{Point}
   \newcommand{\thepoints}{Points}
@@ -35,7 +34,6 @@
   \newcommand{\theof}{of}
 }{%
   \usepackage[ngerman]{babel}
-  \usepackage[german]{isodate}
   \newcommand{\theexercise}{Aufgabe}
   \newcommand{\thepoint}{Punkt}
   \newcommand{\thepoints}{Punkte}
@@ -47,6 +45,8 @@
   \newcommand{\theof}{von}
 }
 
+\usepackage[useregional]{datetime2}
+
 \RequirePackage{xifthen,geometry,fancyhdr,enumitem,comment,amssymb}
 
 \newcounter{exsheet2@pointsum}
@@ -108,6 +108,10 @@
 \def\@instructions{\ }
 \newcommand{\instructions}[1]{\def\@instructions{#1}}
 
+\let\olddate\date
+\DTMsavenow{exsheet2@today}
+\renewcommand{\date}[1]{\olddate{#1}\DTMsavedate{exsheet2@today}{#1}}
+
 
 \geometry{a4paper,textwidth=16cm,textheight=23cm}
 
@@ -124,7 +128,7 @@
     \@semester
   }
   \fancyhead[C]{%
-    {\isodate \today}
+    {\DTMsetdatestyle{iso}\DTMusedate{exsheet2@today}}
   }
   \fancyhead[R]{%
     \@auth\\
@@ -194,7 +198,7 @@
 
         \vspace*{1em}
 
-        \today\\
+        {\DTMusedate{exsheet2@today}} \\
 
         \vspace*{1em}
         \@curriculum \\
-- 
2.39.5