rustdoc: avoid excessive HTML generated in example sources

Author: notriddle

src/librustdoc/html/render/mod.rs

@@ -2899,11 +2899,7 @@ fn render_call_locations(w: &mut Buffer, cx: &mut Context<'_>, item: &clean::Ite
             cx,
             &cx.root_path(),
             highlight::DecorationInfo(decoration_info),
-            sources::SourceContext::Embedded {
-                url: &call_data.url,
-                offset: line_min,
-                needs_expansion,
-            },
+            sources::SourceContext::Embedded { offset: line_min, needs_expansion },
         );
         write!(w, "</div></div>");
 

src/librustdoc/html/sources.rs

@@ -256,9 +256,9 @@ where
     }
 }
 
-pub(crate) enum SourceContext<'a> {
+pub(crate) enum SourceContext {
     Standalone,
-    Embedded { url: &'a str, offset: usize, needs_expansion: bool },
+    Embedded { offset: usize, needs_expansion: bool },
 }
 
 /// Wrapper struct to render the source code of a file. This will do things like
@@ -270,7 +270,7 @@ pub(crate) fn print_src(
     context: &Context<'_>,
     root_path: &str,
     decoration_info: highlight::DecorationInfo,
-    source_context: SourceContext<'_>,
+    source_context: SourceContext,
 ) {
     let lines = s.lines().count();
     let mut line_numbers = Buffer::empty_from(buf);
@@ -286,12 +286,12 @@ pub(crate) fn print_src(
                 writeln!(line_numbers, "<a href=\"#{line}\" id=\"{line}\">{line}</a>")
             }
         }
-        SourceContext::Embedded { url, offset, needs_expansion } => {
+        SourceContext::Embedded { offset, needs_expansion } => {
             extra =
                 if needs_expansion { Some(r#"<span class="expand">&varr;</span>"#) } else { None };
             for line_number in 1..=lines {
                 let line = line_number + offset;
-                writeln!(line_numbers, "<a href=\"{root_path}{url}#{line}\">{line}</a>")
+                writeln!(line_numbers, "<span>{line}</span>")
             }
         }
     }

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

@@ -575,7 +575,7 @@ ul.block, .block li {
 	border-color: var(--example-line-numbers-border-color);
 }
 
-.src-line-numbers a {
+.src-line-numbers a, .src-line-numbers span {
 	color: var(--src-line-numbers-span-color);
 }
 .src-line-numbers :target {
@@ -2061,7 +2061,8 @@ in storage.js
 	padding: 14px 0;
 }
 
-.scraped-example .code-wrapper .src-line-numbers a {
+.scraped-example .code-wrapper .src-line-numbers a,
+.scraped-example .code-wrapper .src-line-numbers span {
 	padding: 0 14px;
 }