From e078e561120d0c01fdaaf638e3b49d06702b9af7 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Thu, 3 Jun 2021 20:16:47 +0200
Subject: [PATCH] Fix invalid ID value in all.html file

---
 src/librustdoc/html/render/mod.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs
index 10f5184e39a..4b6faefc2fb 100644
--- a/src/librustdoc/html/render/mod.rs
+++ b/src/librustdoc/html/render/mod.rs
@@ -322,7 +322,13 @@ impl AllTypes {
             if !e.is_empty() {
                 let mut e: Vec<&ItemEntry> = e.iter().collect();
                 e.sort();
-                write!(f, "<h3 id=\"{}\">{}</h3><ul class=\"{} docblock\">", title, title, class);
+                write!(
+                    f,
+                    "<h3 id=\"{}\">{}</h3><ul class=\"{} docblock\">",
+                    title.replace(' ', "-"), // IDs cannot contain whitespaces.
+                    title,
+                    class
+                );
 
                 for s in e.iter() {
                     write!(f, "<li>{}</li>", s.print());
@@ -346,7 +352,7 @@ impl AllTypes {
              </h1>",
         );
         // Note: print_entries does not escape the title, because we know the current set of titles
-        // don't require escaping.
+        // doesn't require escaping.
         print_entries(f, &self.structs, "Structs", "structs");
         print_entries(f, &self.enums, "Enums", "enums");
         print_entries(f, &self.unions, "Unions", "unions");