From 53ef3245842738dfc2e4dbb68df310614ed36ab6 Mon Sep 17 00:00:00 2001
From: Adam Israel <adam@adamisrael.com>
Date: Sun, 15 Feb 2026 17:59:46 -0500
Subject: [PATCH 1/2] Convert double hyphens to em-dash

When we encounter a double-hyphen in Markdown, convert it to a proper
em-dash and remove any extraneous spaces around it.
---
 src/markdown.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/markdown.rs b/src/markdown.rs
index 70bc19f..5a16f4f 100644
--- a/src/markdown.rs
+++ b/src/markdown.rs
@@ -19,6 +19,13 @@ fn strip_comments(mut content: String) -> String {
     content.trim().to_string()
 }
 
+/// Convert hyphens to em-dashes
+fn convert_hyphens_to_em_dashes(mut content: String) -> String {
+    let re = Regex::new(r"(\s+--\s+)").unwrap();
+    content = Regex::replace_all(&re, content.as_str(), "—").to_string();
+    content.trim().to_string()
+}
+
 /// Convert the content of a Markdown into a collection of paragraphs.
 fn content_to_paragraphs(mut content: String) -> Vec<Paragraph> {
     // Pre-process the content
@@ -26,6 +33,9 @@ fn content_to_paragraphs(mut content: String) -> Vec<Paragraph> {
     // Add support single and multi-line %% comment blocks %%
     content = strip_comments(content);
 
+    // Replace double-hyphens to em-dashes
+    content = convert_hyphens_to_em_dashes(content);
+
     let mut paragraphs: Vec<Paragraph> = vec![];
     let sep = Paragraph::new()
         .add_run(Run::new().add_text("#"))
@@ -262,6 +272,12 @@ mod tests {
         assert!(content.is_empty());
     }
 
+    #[test]
+    fn test_convert_hyphens_to_em_dashes() {
+        let content = convert_hyphens_to_em_dashes("This is a test -- only a test -- he was told.".to_string());
+        assert!(content == "This is a test—only a test—he was told.");
+    }
+
     #[test]
     fn test_trim_doublespace() {
         let s = "This is a test.  This is only a test.\nIf this were an actual emergency, you would be instructed where to go and what to do.";

From 55bea43c8a9cbcb2d808d49efc3694b57f6d03ba Mon Sep 17 00:00:00 2001
From: Adam Israel <adam@adamisrael.com>
Date: Sun, 22 Mar 2026 12:41:30 -0400
Subject: [PATCH 2/2] fix: rustfmt

---
 src/markdown.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/markdown.rs b/src/markdown.rs
index 5a16f4f..c205485 100644
--- a/src/markdown.rs
+++ b/src/markdown.rs
@@ -274,7 +274,9 @@ mod tests {
 
     #[test]
     fn test_convert_hyphens_to_em_dashes() {
-        let content = convert_hyphens_to_em_dashes("This is a test -- only a test -- he was told.".to_string());
+        let content = convert_hyphens_to_em_dashes(
+            "This is a test -- only a test -- he was told.".to_string(),
+        );
         assert!(content == "This is a test—only a test—he was told.");
     }