TRPL - print button not working in beta or nightly

[carols10cents]

Possibly related to #44704, not sure yet. Mdbook related, not rustdoc. Possibly due to customizations we've made, not sure if mdbook bug or not yet.

If I visit https://doc.rust-lang.org/beta/book/second-edition/ or https://doc.rust-lang.org/nightly/book/second-edition/ and click the print button, nothing happens. Same non-behavior in firefox nightly and chrome.

What I expect to happen does happen on https://doc.rust-lang.org/stable/book/second-edition/, which is that I am taken to https://doc.rust-lang.org/stable/book/second-edition/print.html and a print dialog comes up.

cc @steveklabnik

Poking at this slowly, not super high priority but we should figure it out before the next release

• Stable is using mdbook 0.0.22

  rust/src/tools/rustbook/Cargo.toml

  Line 11 in 3b72af9

  version = "0.0.22"

• Beta is using mdbook 0.0.26

  rust/src/tools/rustbook/Cargo.toml

  Line 11 in f724781

  version = "0.0.26"

• Nightly is also on mdbook 0.0.26

  rust/src/tools/rustbook/Cargo.toml

  Line 11 in e0febe7

  version = "0.0.26"

I am able to reproduce locally with mdbook 0.0.26
I am not able to reproduce locally with mdbook 0.0.25
I am able to reproduce locally with mdbook cd711bfb

[kennytm]

azerupi/mdBook@0.0.25...0.0.26

Probably caused by azerupi/mdBook#439. Note that the PR introduced the diff:

diff --git a/src/theme/index.hbs b/src/theme/index.hbs
index 9f735e6cd..3b4dbd12c 100644
--- a/src/theme/index.hbs
+++ b/src/theme/index.hbs
@@ -88,7 +88,9 @@
                     <h1 class="menu-title">{{ book_title }}</h1>
 
                     <div class="right-buttons">
-                        <i id="print-button" class="fa fa-print" title="Print this book"></i>
+                        <a href="print.html">
+                            <i id="print-button" class="fa fa-print" title="Print this book"></i>
+                        </a>
                     </div>
                 </div>

But I can't see that <a> tag in the beta/nightly book.

[carols10cents]

AHA!! Nice catch @kennytm !!! We indeed customize index.hbs in the book, so that's probably the issue.