Revise pdf links to mirror directories.

DocGen4/Output/Navbar.lean

@@ -14,8 +14,13 @@ open Lean
 open scoped DocGen4.Jsx
 
 def moduleListFile (file : NameExt) : BaseHtmlM Html := do
+  let contents :=
+    if file.ext == .pdf then
+      <span>{s!"🗎 {file.getString!} (<a class=\"pdf\" href={← moduleNameExtToLink file}>pdf</a>)"}</span>
+    else
+      <a href={← moduleNameExtToLink file}>{file.getString!}</a>
   return <div class={if (← getCurrentName) == file.name then "nav_link visible" else "nav_link"}>
-    <a class={if file.ext == .pdf then "pdf" else ""} href={← moduleNameExtToLink file}>{file.getString!}</a>
+    {contents}
   </div>
 
 /--

DocGen4/Process/NameExt.lean

@@ -42,8 +42,7 @@ def cmp (n₁ n₂ : NameExt) : Ordering :=
   | ord => ord
 
 def getString! : NameExt → String
-  | ⟨str _ s, .html⟩ => s
-  | ⟨str _ s, .pdf⟩ => s ++ ".pdf"
+  | ⟨str _ s, _⟩ => s
   | _       => unreachable!
 
 end NameExt

static/style.css

@@ -751,7 +751,6 @@ a:link, a:visited, a:active {
 
 a.pdf:link, a.pdf:visited, a.pdf:active {
     color:var(--link-pdf-color);
-    text-decoration: none
 }
 
 /** Show it on hover though. **/