This patch is based on the upstream commit descibed below, adapted for use
in the Debian package by Peter Michael Green.

commit 0851758bb2e7134d48b54a52f658aaccadb59de1
Author: rami3l <rami3l@outlook.com>
Date:   Mon Feb 17 10:11:08 2025 +0800

    fix(deps): update rust crate pulldown-cmark to 0.13

diff --git a/Cargo.toml b/Cargo.toml
index 93f5dbb8..6bdb354e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -59,1 +59,1 @@
-pulldown-cmark = { version = "0.12", default-features = false }
+pulldown-cmark = { version = "0.13", default-features = false }
diff --git a/src/cli/markdown.rs b/src/cli/markdown.rs
index 6f107c98..696cd708 100644
--- a/src/cli/markdown.rs
+++ b/src/cli/markdown.rs
@@ -157,6 +157,8 @@ impl<'a> LineFormatter<'a> {
             Tag::Link { .. } => {}
             Tag::Image { .. } => {}
             Tag::FootnoteDefinition(_name) => {}
+            Tag::Superscript => {}
+            Tag::Subscript => {}
         }
     }
 
@@ -197,6 +199,8 @@ impl<'a> LineFormatter<'a> {
             TagEnd::Image { .. } => {} // shouldn't happen, handled in start
             TagEnd::FootnoteDefinition => {}
             TagEnd::MetadataBlock(_) => {}
+            TagEnd::Superscript => {}
+            TagEnd::Subscript => {}
         }
     }