Rollup merge of #107615 - notriddle:notriddle/nbsp, r=GuillaumeGomez

Replace nbsp in all rustdoc code blocks

Based on #106125 by `@dtolnay` — this PR fixes the line wrapping bug.

Fixes #106098. This makes code copyable from rustdoc rendered documentation into a Rust source file.

3 files changed, 14 insertions, 12 deletions

diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs
index 33404a76835..74cdf9b9b79 100644
--- a/src/librustdoc/html/format.rs
+++ b/src/librustdoc/html/format.rs
@@ -208,7 +208,7 @@ impl clean::GenericParamDef {
                     if f.alternate() {
                         write!(f, ": {:#}", print_generic_bounds(bounds, cx))?;
                     } else {
-                        write!(f, ": {}", print_generic_bounds(bounds, cx))?;
+                        write!(f, ": {}", print_generic_bounds(bounds, cx))?;
                     }
                 }
 
@@ -216,7 +216,7 @@ impl clean::GenericParamDef {
                     if f.alternate() {
                         write!(f, " = {:#}", ty.print(cx))?;
                     } else {
-                        write!(f, " = {}", ty.print(cx))?;
+                        write!(f, " = {}", ty.print(cx))?;
                     }
                 }
 
@@ -226,14 +226,14 @@ impl clean::GenericParamDef {
                 if f.alternate() {
                     write!(f, "const {}: {:#}", self.name, ty.print(cx))?;
                 } else {
-                    write!(f, "const {}: {}", self.name, ty.print(cx))?;
+                    write!(f, "const {}: {}", self.name, ty.print(cx))?;
                 }
 
                 if let Some(default) = default {
                     if f.alternate() {
                         write!(f, " = {:#}", default)?;
                     } else {
-                        write!(f, " = {}", default)?;
+                        write!(f, " = {}", default)?;
                     }
                 }
 
@@ -354,12 +354,12 @@ pub(crate) fn print_where_clause<'a, 'tcx: 'a>(
             let mut br_with_padding = String::with_capacity(6 * indent + 28);
             br_with_padding.push_str("<br>");
             for _ in 0..indent + 4 {
-                br_with_padding.push_str("&nbsp;");
+                br_with_padding.push_str(" ");
             }
             let where_preds = where_preds.to_string().replace("<br>", &br_with_padding);
 
             if ending == Ending::Newline {
-                let mut clause = "&nbsp;".repeat(indent.saturating_sub(1));
+                let mut clause = " ".repeat(indent.saturating_sub(1));
                 write!(clause, "<span class=\"where fmt-newline\">where{where_preds},</span>")?;
                 clause
             } else {
@@ -368,7 +368,7 @@ pub(crate) fn print_where_clause<'a, 'tcx: 'a>(
                     format!("<br><span class=\"where\">where{where_preds}</span>")
                 } else {
                     let mut clause = br_with_padding;
-                    clause.truncate(clause.len() - 4 * "&nbsp;".len());
+                    clause.truncate(clause.len() - 4);
                     write!(clause, "<span class=\"where\">where{where_preds}</span>")?;
                     clause
                 }
@@ -1391,8 +1391,8 @@ impl clean::FnDecl {
 
         let declaration_len = header_len + args_plain.len() + arrow_plain.len();
         let output = if declaration_len > 80 {
-            let full_pad = format!("<br>{}", "&nbsp;".repeat(indent + 4));
-            let close_pad = format!("<br>{}", "&nbsp;".repeat(indent));
+            let full_pad = format!("<br>{}", " ".repeat(indent + 4));
+            let close_pad = format!("<br>{}", " ".repeat(indent));
             format!(
                 "({pad}{args}{close}){arrow}",
                 pad = if self.inputs.values.is_empty() { "" } else { &full_pad },
@@ -1611,7 +1611,7 @@ impl clean::TypeBinding {
                         if f.alternate() {
                             write!(f, ": {:#}", print_generic_bounds(bounds, cx))?;
                         } else {
-                            write!(f, ":&nbsp;{}", print_generic_bounds(bounds, cx))?;
+                            write!(f, ": {}", print_generic_bounds(bounds, cx))?;
                         }
                     }
                 }
diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs
index bd7548003ad..9a7a08ab806 100644
--- a/src/librustdoc/html/render/print_item.rs
+++ b/src/librustdoc/html/render/print_item.rs
@@ -1157,7 +1157,7 @@ fn item_union(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, s: &clean:
 fn print_tuple_struct_fields(w: &mut Buffer, cx: &Context<'_>, s: &[clean::Item]) {
     for (i, ty) in s.iter().enumerate() {
         if i > 0 {
-            w.write_str(",&nbsp;");
+            w.write_str(", ");
         }
         match *ty.kind {
             clean::StrippedItem(box clean::StructFieldItem(_)) => w.write_str("_"),
@@ -1297,7 +1297,7 @@ fn item_enum(w: &mut Buffer, cx: &mut Context<'_>, it: &clean::Item, e: &clean::
                                 "<div class=\"sub-variant-field\">\
                                  <span id=\"{id}\" class=\"small-section-header\">\
                                      <a href=\"#{id}\" class=\"anchor field\">§</a>\
-                                     <code>{f}:&nbsp;{t}</code>\
+                                     <code>{f}: {t}</code>\
                                  </span>",
                                 id = id,
                                 f = field.name.unwrap(),
diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index ee988090ca3..a1e91118303 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -184,6 +184,7 @@ h4.code-header {
 	font-weight: 600;
 	margin: 0;
 	padding: 0;
+	white-space: pre-wrap;
 }
 
 #crate-search,
@@ -642,6 +643,7 @@ pre, .rustdoc.source .example-wrap {
 .fn .where,
 .where.fmt-newline {
 	display: block;
+	white-space: pre-wrap;
 	font-size: 0.875rem;
 }