Allow self reference without link

.gitignore

@@ -1 +1,2 @@
 /target
+.vscode

eipw-lint/src/lints/markdown/link_first.rs

@@ -56,8 +56,25 @@ struct Visitor<'a, 'b, 'c> {
 
 impl<'a, 'b, 'c> Visitor<'a, 'b, 'c> {
     fn check(&self, ast: &Ast, text: &str) -> Result<Next, Error> {
+        let self_reference = {
+            let name = self
+                .ctx
+                .preamble()
+                .by_index(0)
+                .map(|field| field.name().trim())
+                .unwrap_or("");
+            let number = self
+                .ctx
+                .preamble()
+                .by_index(0)
+                .map(|field| field.value().trim())
+                .unwrap_or("");
+            let pattern = format!(r"(?i){}-{}$", name, number);
+            Regex::new(&pattern).unwrap().is_match(text)
+        };
+
         for matched in self.re.find_iter(text) {
-            if self.linked.contains(matched.as_str()) {
+            if self.linked.contains(matched.as_str()) || self_reference {
                 continue;
             }
 

eipw-lint/tests/lint_markdown_link_first.rs

@@ -81,3 +81,26 @@ header: value1
 
     assert_eq!(reports, "");
 }
+
+#[tokio::test]
+async fn self_reference_unlinked() {
+    let src = r#"---
+eip: 1234
+---
+
+EIP-1234
+
+EIP-1234
+"#;
+
+    let reports = Linter::<Text<String>>::default()
+        .clear_lints()
+        .deny("markdown-link-first", LinkFirst("EIP-1234"))
+        .check_slice(None, src)
+        .run()
+        .await
+        .unwrap()
+        .into_inner();
+
+    assert_eq!(reports, "");
+}