Fix reexports missing from the search index

Author: GuillaumeGomez

src/librustdoc/formats/cache.rs

@@ -248,7 +248,16 @@ impl<'a, 'tcx> DocFolder for CacheBuilder<'a, 'tcx> {
         }
 
         // Index this method for searching later on.
-        if let Some(ref s) = item.name {
+        if let Some(ref s) = item.name.or_else(|| {
+            if item.is_stripped() {
+                None
+            } else if let clean::ImportItem(ref i) = *item.kind &&
+                let clean::ImportKind::Simple(s) = i.kind {
+                Some(s)
+            } else {
+                None
+            }
+        }) {
             let (parent, is_inherent_impl_item) = match *item.kind {
                 clean::StrippedItem(..) => ((None, None), false),
                 clean::AssocConstItem(..) | clean::AssocTypeItem(..)

src/librustdoc/html/render/mod.rs

@@ -2542,7 +2542,16 @@ fn sidebar_module(buf: &mut Buffer, items: &[clean::Item]) {
 
     let item_sections_in_use: FxHashSet<_> = items
         .iter()
-        .filter(|it| !it.is_stripped() && it.name.is_some())
+        .filter(|it| {
+            !it.is_stripped()
+                && it
+                    .name
+                    .or_else(|| {
+                        if let clean::ImportItem(ref i) = *it.kind &&
+                            let clean::ImportKind::Simple(s) = i.kind { Some(s) } else { None }
+                    })
+                    .is_some()
+        })
         .map(|it| item_ty_to_section(it.type_()))
         .collect();
     for &sec in ItemSection::ALL.iter().filter(|sec| item_sections_in_use.contains(sec)) {

src/librustdoc/html/render/print_item.rs

@@ -346,7 +346,7 @@ fn item_module(w: &mut Buffer, cx: &Context<'_>, item: &clean::Item, items: &[cl
                 w.write_str(ITEM_TABLE_ROW_OPEN);
                 write!(
                     w,
-                    "<div class=\"item-left {stab}{add}import-item\">\
+                    "<div class=\"item-left {stab}{add}import-item\"{id}>\
                          <code>{vis}{imp}</code>\
                      </div>\
                      <div class=\"item-right docblock-short\">{stab_tags}</div>",
@@ -355,6 +355,11 @@ fn item_module(w: &mut Buffer, cx: &Context<'_>, item: &clean::Item, items: &[cl
                     vis = myitem.visibility.print_with_space(myitem.item_id, cx),
                     imp = import.print(cx),
                     stab_tags = stab_tags.unwrap_or_default(),
+                    id = match import.kind {
+                        clean::ImportKind::Simple(s) =>
+                            format!(" id=\"{}\"", cx.derive_id(format!("reexport.{}", s))),
+                        clean::ImportKind::Glob => String::new(),
+                    },
                 );
                 w.write_str(ITEM_TABLE_ROW_CLOSE);
             }

src/librustdoc/html/static/js/search.js

@@ -1507,6 +1507,9 @@ window.initSearch = rawSearchIndex => {
             displayPath = path + "::";
             href = window.rootPath + path.replace(/::/g, "/") + "/" +
                    name + "/index.html";
+        } else if (type === "import") {
+            displayPath = item.path + "::";
+            href = window.rootPath + item.path.replace(/::/g, "/") + "/index.html#reexport." + name;
         } else if (type === "primitive" || type === "keyword") {
             displayPath = "";
             href = window.rootPath + path.replace(/::/g, "/") +