rustdoc: remove unnecessary DOM class h1.fqn

It's misleading. The main heading sometimes isn't an fully qualified name at all.

It's also redundant. It's always a child of `div.main-heading`, so just use that.

src/librustdoc/html/render/context.rs

@@ -639,7 +639,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
                 write!(
                     buf,
                     "<div class=\"main-heading\">\
-                     <h1 class=\"fqn\">Rustdoc settings</h1>\
+                     <h1>Rustdoc settings</h1>\
                      <span class=\"out-of-band\">\
                          <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\
                             Back\
@@ -677,7 +677,7 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
                 write!(
                     buf,
                     "<div class=\"main-heading\">\
-                     <h1 class=\"fqn\">Rustdoc help</h1>\
+                     <h1>Rustdoc help</h1>\
                      <span class=\"out-of-band\">\
                          <a id=\"back\" href=\"javascript:void(0)\" onclick=\"history.back();\">\
                             Back\

src/librustdoc/html/render/mod.rs

@@ -364,7 +364,7 @@ impl AllTypes {
             }
         }
 
-        f.write_str("<h1 class=\"fqn\">List of all items</h1>");
+        f.write_str("<h1>List of all items</h1>");
         // Note: print_entries does not escape the title, because we know the current set of titles
         // doesn't require escaping.
         print_entries(f, &self.structs, ItemSection::Structs);
@@ -394,7 +394,7 @@ fn scrape_examples_help(shared: &SharedContext<'_>) -> String {
     let mut ids = IdMap::default();
     format!(
         "<div class=\"main-heading\">\
-            <h1 class=\"fqn\">About scraped examples</h1>\
+            <h1>About scraped examples</h1>\
         </div>\
         <div>{}</div>",
         Markdown {

src/librustdoc/html/render/write_shared.rs

@@ -345,7 +345,7 @@ if (typeof exports !== 'undefined') {exports.searchIndex = searchIndex};
             };
 
             let content = format!(
-                "<h1 class=\"fqn\">List of all crates</h1><ul class=\"all-items\">{}</ul>",
+                "<h1>List of all crates</h1><ul class=\"all-items\">{}</ul>",
                 krates
                     .iter()
                     .map(|s| {

src/librustdoc/html/static/css/rustdoc.css

@@ -139,7 +139,7 @@ h1, h2, h3, h4 {
 .docblock > h6:first-child {
 	margin-top: 0;
 }
-h1.fqn {
+.main-heading h1 {
 	margin: 0;
 	padding: 0;
 	flex-grow: 1;

src/librustdoc/html/static/js/main.js

@@ -526,7 +526,7 @@ function loadCss(cssUrl) {
         }
 
         let currentNbImpls = implementors.getElementsByClassName("impl").length;
-        const traitName = document.querySelector("h1.fqn > .trait").textContent;
+        const traitName = document.querySelector(".main-heading h1 > .trait").textContent;
         const baseIdName = "impl-" + traitName + "-";
         const libs = Object.getOwnPropertyNames(imp);
         // We don't want to include impls from this JS file, when the HTML already has them.

src/librustdoc/html/templates/print_item.html

@@ -1,5 +1,5 @@
 <div class="main-heading"> {#- -#}
-    <h1 class="fqn"> {#- -#}
+    <h1> {#- -#}
         {{-typ-}}
         {#- The breadcrumbs of the item path, like std::string -#}
         {%- for component in path_components -%}

tests/rustdoc-gui/anchors.goml

@@ -2,7 +2,7 @@
 
 define-function: (
     "check-colors",
-    (theme, main_color, title_color, fqn_color, fqn_type_color, src_link_color, sidebar_link_color),
+    (theme, main_color, title_color, main_heading_color, main_heading_type_color, src_link_color, sidebar_link_color),
     block {
         goto: "file://" + |DOC_PATH| + "/staged_api/struct.Foo.html"
         // This is needed to ensure that the text color is computed.
@@ -14,8 +14,8 @@ define-function: (
         reload:
 
         assert-css: ("#toggle-all-docs", {"color": |main_color|})
-        assert-css: (".fqn a:nth-of-type(1)", {"color": |fqn_color|})
+        assert-css: (".main-heading h1 a:nth-of-type(1)", {"color": |main_heading_color|})
-        assert-css: (".fqn a:nth-of-type(2)", {"color": |fqn_type_color|})
+        assert-css: (".main-heading a:nth-of-type(2)", {"color": |main_heading_type_color|})
         assert-css: (
              ".rightside .srclink",
              {"color": |src_link_color|, "text-decoration": "none solid " + |src_link_color|},
@@ -57,7 +57,7 @@ define-function: (
         assert-css: ("#top-doc-prose-title", {"color": |title_color|})
 
         assert-css: (".sidebar a", {"color": |sidebar_link_color|})
-        assert-css: ("h1.fqn a", {"color": |title_color|})
+        assert-css: (".main-heading h1 a", {"color": |title_color|})
 
         // We move the cursor over the "Implementations" title so the anchor is displayed.
         move-cursor-to: "h2#implementations"
@@ -77,8 +77,8 @@ call-function: (
         "theme": "ayu",
         "main_color": "rgb(197, 197, 197)",
         "title_color": "rgb(255, 255, 255)",
-        "fqn_color": "rgb(255, 255, 255)",
+        "main_heading_color": "rgb(255, 255, 255)",
-        "fqn_type_color": "rgb(255, 160, 165)",
+        "main_heading_type_color": "rgb(255, 160, 165)",
         "src_link_color": "rgb(57, 175, 215)",
         "sidebar_link_color": "rgb(83, 177, 219)",
     },
@@ -89,8 +89,8 @@ call-function: (
         "theme": "dark",
         "main_color": "rgb(221, 221, 221)",
         "title_color": "rgb(221, 221, 221)",
-        "fqn_color": "rgb(221, 221, 221)",
+        "main_heading_color": "rgb(221, 221, 221)",
-        "fqn_type_color": "rgb(45, 191, 184)",
+        "main_heading_type_color": "rgb(45, 191, 184)",
         "src_link_color": "rgb(210, 153, 29)",
         "sidebar_link_color": "rgb(253, 191, 53)",
     },
@@ -101,8 +101,8 @@ call-function: (
         "theme": "light",
         "main_color": "rgb(0, 0, 0)",
         "title_color": "rgb(0, 0, 0)",
-        "fqn_color": "rgb(0, 0, 0)",
+        "main_heading_color": "rgb(0, 0, 0)",
-        "fqn_type_color": "rgb(173, 55, 138)",
+        "main_heading_type_color": "rgb(173, 55, 138)",
         "src_link_color": "rgb(56, 115, 173)",
         "sidebar_link_color": "rgb(53, 109, 164)",
     },

tests/rustdoc-gui/headings.goml

@@ -13,7 +13,7 @@
 // 14px  0.875rem
 goto: "file://" + |DOC_PATH| + "/test_docs/struct.HeavilyDocumentedStruct.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -52,7 +52,7 @@ assert-css: ("h6#sub-sub-heading-for-struct-impl-item-doc", {"font-size": "14px"
 
 goto: "file://" + |DOC_PATH| + "/test_docs/enum.HeavilyDocumentedEnum.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -111,7 +111,7 @@ assert-css: ("//ul[@class='block mod']/preceding-sibling::h3", {"border-bottom-w
 
 goto: "file://" + |DOC_PATH| + "/test_docs/union.HeavilyDocumentedUnion.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})
@@ -143,7 +143,7 @@ assert-css: ("h6#sub-heading-for-union-impl-item-doc", {"border-bottom-width": "
 
 goto: "file://" + |DOC_PATH| + "/test_docs/macro.heavily_documented_macro.html"
 
-assert-css: ("h1.fqn", {"font-size": "24px"})
+assert-css: (".main-heading h1", {"font-size": "24px"})
 
 assert-css: ("h2#top-doc-prose-title", {"font-size": "22px"})
 assert-css: ("h2#top-doc-prose-title", {"border-bottom-width": "1px"})

tests/rustdoc-gui/search-result-go-to-first.goml

@@ -3,17 +3,17 @@
 // First, we check that the first page doesn't have the string we're looking for to ensure
 // that the feature is changing page as expected.
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html"
-assert-text-false: (".fqn", "Struct test_docs::Foo")
+assert-text-false: (".main-heading h1", "Struct test_docs::Foo")
 
 // We now check that we land on the search result page if "go_to_first" isn't set.
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html?search=struct%3AFoo"
 // Waiting for the search results to appear...
 wait-for: "#search-tabs"
-assert-text-false: (".fqn", "Struct test_docs::Foo")
+assert-text-false: (".main-heading h1", "Struct test_docs::Foo")
 // Ensure that the search results are displayed, not the "normal" content.
 assert-css: ("#main-content", {"display": "none"})
 
 // Now we can check that the feature is working as expected!
 goto: "file://" + |DOC_PATH| + "/test_docs/index.html?search=struct%3AFoo&go_to_first=true"
 // Waiting for the page to load...
-wait-for-text: (".fqn", "Struct test_docs::Foo")
+wait-for-text: (".main-heading h1", "Struct test_docs::Foo")

tests/rustdoc-gui/toggle-click-deadspace.goml

@@ -12,4 +12,4 @@ assert-attribute-false: (".impl-items .rustdoc-toggle", {"open": ""})
 
 // Click the "Trait" part of "impl Trait" and verify it navigates.
 click: "#impl-Trait-for-Foo h3 a:first-of-type"
-assert-text: (".fqn", "Trait lib2::Trait")
+assert-text: (".main-heading h1", "Trait lib2::Trait")

tests/rustdoc/index-page.rs

@@ -5,7 +5,7 @@
 #![crate_name = "foo"]
 
 // @has foo/../index.html
-// @has - '//h1[@class="fqn"]' 'List of all crates'
+// @has - '//h1' 'List of all crates'
 // @has - '//ul[@class="all-items"]//a[@href="foo/index.html"]' 'foo'
 // @has - '//ul[@class="all-items"]//a[@href="all_item_types/index.html"]' 'all_item_types'
 pub struct Foo;

tests/rustdoc/keyword.rs

@@ -7,7 +7,7 @@
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a' 'Keywords'
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a/@href' '#keywords'
 // @has foo/keyword.match.html '//a[@class="keyword"]' 'match'
-// @has foo/keyword.match.html '//h1[@class="fqn"]' 'Keyword match'
+// @has foo/keyword.match.html '//h1' 'Keyword match'
 // @has foo/keyword.match.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has foo/index.html '//a/@href' '../foo/index.html'
 // @!has foo/foo/index.html

tests/rustdoc/primitive-reference.rs

@@ -9,7 +9,7 @@
 // @has - '//div[@class="sidebar-elems"]//li/a/@href' '#primitives'
 // @has foo/primitive.reference.html
 // @has - '//a[@class="primitive"]' 'reference'
-// @has - '//h1[@class="fqn"]' 'Primitive Type reference'
+// @has - '//h1' 'Primitive Type reference'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 
 // There should be only one implementation listed.

tests/rustdoc/primitive-slice-auto-trait.rs

@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.slice.html '//a[@class="primitive"]' 'slice'
-// @has - '//h1[@class="fqn"]' 'Primitive Type slice'
+// @has - '//h1' 'Primitive Type slice'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl<T> Send for [T]where T: Send'

tests/rustdoc/primitive-tuple-auto-trait.rs

@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.tuple.html '//a[@class="primitive"]' 'tuple'
-// @has - '//h1[@class="fqn"]' 'Primitive Type tuple'
+// @has - '//h1' 'Primitive Type tuple'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'Send'

tests/rustdoc/primitive-unit-auto-trait.rs

@@ -4,7 +4,7 @@
 #![feature(rustdoc_internals)]
 
 // @has foo/primitive.unit.html '//a[@class="primitive"]' 'unit'
-// @has - '//h1[@class="fqn"]' 'Primitive Type unit'
+// @has - '//h1' 'Primitive Type unit'
 // @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has - '//h2[@id="synthetic-implementations"]' 'Auto Trait Implementations'
 // @has - '//div[@id="synthetic-implementations-list"]//h3' 'impl Send for ()'

tests/rustdoc/primitive.rs

@@ -7,7 +7,7 @@
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a' 'Primitive Types'
 // @has foo/index.html '//div[@class="sidebar-elems"]//li/a/@href' '#primitives'
 // @has foo/primitive.i32.html '//a[@class="primitive"]' 'i32'
-// @has foo/primitive.i32.html '//h1[@class="fqn"]' 'Primitive Type i32'
+// @has foo/primitive.i32.html '//h1' 'Primitive Type i32'
 // @has foo/primitive.i32.html '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
 // @has foo/index.html '//a/@href' '../foo/index.html'
 // @!has foo/index.html '//span' '🔒'