parse #tags as links (resolve #8)

src/main.rs

@@ -502,7 +502,7 @@ fn preprocess_markdown(string: String) -> String {
     let finder = LinkFinder::new();
 
     let result = double_brackets
-        .replace_all(string.as_str(), |caps: &Captures| {
+        .replace_all(&string, |caps: &Captures| {
             format!(
                 "[{}]({})",
                 &caps[1],
@@ -511,6 +511,17 @@ fn preprocess_markdown(string: String) -> String {
         })
         .to_string();
 
+    let tags = Regex::new(r"#([\w]+)").unwrap();
+    let result = tags
+        .replace_all(&result, |caps: &Captures| {
+            format!(
+                "[{}]({})",
+                &caps[0],
+                utf8_percent_encode(&caps[1], percent_encoding::NON_ALPHANUMERIC)
+            )
+        })
+        .to_string();
+
     let result_vec = Vec::from(result.as_str());
     let start_delims = vec![b'(', b'<'];
     let end_delims = vec![b')', b'>'];