Beamer writer: support exampleblock and alertblock.

A block will be rendered as an exampleblock if the heading
has class `example` and alertblock if it has class `alert`.

Closes #7278.

1 files changed, 38 insertions, 0 deletions

diff --git a/test/command/7278.md b/test/command/7278.md
new file mode 100644
index 000000000..dcf71c29f
--- /dev/null
+++ b/test/command/7278.md
@@ -0,0 +1,38 @@
+```
+% pandoc -t beamer
+# Slide
+
+Some blocks:
+
+## example block title {.example}
+
+text in block
+
+## alert block title {.alert}
+
+text in block
+
+## block title
+
+text in block
+^D
+\begin{frame}{Slide}
+\protect\hypertarget{slide}{}
+Some blocks:
+
+\begin{exampleblock}{example block title}
+\protect\hypertarget{example-block-title}{}
+text in block
+\end{exampleblock}
+
+\begin{alertblock}{alert block title}
+\protect\hypertarget{alert-block-title}{}
+text in block
+\end{alertblock}
+
+\begin{block}{block title}
+\protect\hypertarget{block-title}{}
+text in block
+\end{block}
+\end{frame}
+```