From 3a20cbf9fc1e3049da8dcc64e572dfb4ff32dd8e Mon Sep 17 00:00:00 2001
From: Michael Howell <michael@notriddle.com>
Date: Mon, 30 Jan 2023 15:55:47 -0700
Subject: [PATCH] rustdoc: remove inconsistently-present sidebar tooltips

Discussed in
https://rust-lang.zulipchat.com/#narrow/stream/266220-rustdoc/topic/Inconsistent.20sidebar.20tooltips/near/323565625
---
 src/librustdoc/html/render/context.rs |  9 +++------
 src/librustdoc/html/render/mod.rs     |  3 ---
 src/librustdoc/html/static/js/main.js |  6 +-----
 tests/rustdoc/markdown-summaries.rs   | 27 ---------------------------
 4 files changed, 4 insertions(+), 41 deletions(-)
 delete mode 100644 tests/rustdoc/markdown-summaries.rs

diff --git a/src/librustdoc/html/render/context.rs b/src/librustdoc/html/render/context.rs
index b59645ec2e2..1216a8d71c8 100644
--- a/src/librustdoc/html/render/context.rs
+++ b/src/librustdoc/html/render/context.rs
@@ -18,7 +18,7 @@ use super::search_index::build_index;
 use super::write_shared::write_shared;
 use super::{
     collect_spans_and_sources, print_sidebar, scrape_examples_help, sidebar_module_like, AllTypes,
-    LinkFromSrc, NameDoc, StylePath,
+    LinkFromSrc, StylePath,
 };
 
 use crate::clean::{self, types::ExternalLocation, ExternalCrate};
@@ -256,7 +256,7 @@ impl<'tcx> Context<'tcx> {
     }
 
     /// Construct a map of items shown in the sidebar to a plain-text summary of their docs.
-    fn build_sidebar_items(&self, m: &clean::Module) -> BTreeMap<String, Vec<NameDoc>> {
+    fn build_sidebar_items(&self, m: &clean::Module) -> BTreeMap<String, Vec<String>> {
         // BTreeMap instead of HashMap to get a sorted output
         let mut map: BTreeMap<_, Vec<_>> = BTreeMap::new();
         let mut inserted: FxHashMap<ItemType, FxHashSet<Symbol>> = FxHashMap::default();
@@ -274,10 +274,7 @@ impl<'tcx> Context<'tcx> {
             if inserted.entry(short).or_default().insert(myname) {
                 let short = short.to_string();
                 let myname = myname.to_string();
-                map.entry(short).or_default().push((
-                    myname,
-                    Some(item.doc_value().map_or_else(String::new, |s| plain_text_summary(&s))),
-                ));
+                map.entry(short).or_default().push(myname);
             }
         }
 
diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs
index 816a8f4e274..deebab1f0e8 100644
--- a/src/librustdoc/html/render/mod.rs
+++ b/src/librustdoc/html/render/mod.rs
@@ -83,9 +83,6 @@ use crate::scrape_examples::{CallData, CallLocation};
 use crate::try_none;
 use crate::DOC_RUST_LANG_ORG_CHANNEL;
 
-/// A pair of name and its optional document.
-pub(crate) type NameDoc = (String, Option<String>);
-
 pub(crate) fn ensure_trailing_slash(v: &str) -> impl fmt::Display + '_ {
     crate::html::format::display_fn(move |f| {
         if !v.ends_with('/') && !v.is_empty() { write!(f, "{}/", v) } else { f.write_str(v) }
diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index b9ad8ef70e9..b5cbc484601 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -456,10 +456,7 @@ function loadCss(cssUrl) {
             const ul = document.createElement("ul");
             ul.className = "block " + shortty;
 
-            for (const item of filtered) {
-                const name = item[0];
-                const desc = item[1]; // can be null
-
+            for (const name of filtered) {
                 let path;
                 if (shortty === "mod") {
                     path = name + "/index.html";
@@ -469,7 +466,6 @@ function loadCss(cssUrl) {
                 const current_page = document.location.href.split("/").pop();
                 const link = document.createElement("a");
                 link.href = path;
-                link.title = desc;
                 if (path === current_page) {
                     link.className = "current";
                 }
diff --git a/tests/rustdoc/markdown-summaries.rs b/tests/rustdoc/markdown-summaries.rs
deleted file mode 100644
index 31e7072b5ce..00000000000
--- a/tests/rustdoc/markdown-summaries.rs
+++ /dev/null
@@ -1,27 +0,0 @@
-#![crate_type = "lib"]
-#![crate_name = "summaries"]
-
-//! This *summary* has a [link] and `code`.
-//!
-//! This is the second paragraph.
-//!
-//! [link]: https://example.com
-
-// @hasraw search-index.js 'This <em>summary</em> has a link and <code>code</code>.'
-// @!hasraw - 'second paragraph'
-
-/// This `code` will be rendered in a code tag.
-///
-/// This text should not be rendered.
-pub struct Sidebar;
-
-// @hasraw search-index.js 'This <code>code</code> will be rendered in a code tag.'
-// @hasraw summaries/sidebar-items.js 'This `code` will be rendered in a code tag.'
-// @!hasraw - 'text should not be rendered'
-
-/// ```text
-/// this block should not be rendered
-/// ```
-pub struct Sidebar2;
-
-// @!hasraw summaries/sidebar-items.js 'block should not be rendered'