rustdoc: Fix some nits

* Remove a needless comma in the Rust code
* Replace double spaces after full stops with single spaces

Requested-by: @GuillaumeGomez
Signed-off-by: Ian Jackson <[email protected]>

Author: ijackson

src/librustdoc/config.rs

@@ -216,7 +216,7 @@ pub struct RenderOptions {
     pub extension_css: Option<PathBuf>,
     /// A map of crate names to the URL to use instead of querying the crate's `html_root_url`.
     pub extern_html_root_urls: BTreeMap<String, String>,
-    /// A map of the default settings (values are as for DOM storage API).  Keys should lack the
+    /// A map of the default settings (values are as for DOM storage API). Keys should lack the
     /// `rustdoc-` prefix.
     pub default_settings: HashMap<String, String>,
     /// If present, suffix added to CSS/JavaScript files when referencing them in generated pages.

src/librustdoc/html/layout.rs

@@ -178,7 +178,7 @@ pub fn render<T: Print, S: Print>(
         default_settings = layout
             .default_settings
             .iter()
-            .map(|(k, v)| format!(r#" data-{}="{}""#, k.replace('-', "_"), Escape(v),))
+            .map(|(k, v)| format!(r#" data-{}="{}""#, k.replace('-', "_"), Escape(v)))
             .collect::<String>(),
         style_files = style_files
             .iter()

src/librustdoc/lib.rs

@@ -273,7 +273,7 @@ fn opts() -> Vec<RustcOptGroup> {
             o.optopt(
                 "",
                 "default-theme",
-                "Set the default theme.  THEME should be the theme name, generally lowercase. \
+                "Set the default theme. THEME should be the theme name, generally lowercase. \
                  If an unknown default theme is specified, the builtin default is used. \
                  The set of themes, and the rustdoc built-in default is not stable.",
                 "THEME",
@@ -284,7 +284,7 @@ fn opts() -> Vec<RustcOptGroup> {
                 "",
                 "default-setting",
                 "Default value for a rustdoc setting (used when \"rustdoc-SETTING\" is absent \
-                 from web browser Local Storage).    If VALUE is not supplied, \"true\" is used. \
+                 from web browser Local Storage). If VALUE is not supplied, \"true\" is used. \
                  Supported SETTINGs and VALUEs are not documented and not stable.",
                 "SETTING[=VALUE]",
             )