use char instead of &str for single char patterns

3 files changed, 4 insertions, 4 deletions

diff --git a/src/librustdoc/html/markdown.rs b/src/librustdoc/html/markdown.rs
index 56f7b07cfc8..ff6431640d3 100644
--- a/src/librustdoc/html/markdown.rs
+++ b/src/librustdoc/html/markdown.rs
@@ -707,7 +707,7 @@ impl LangString {
                 x if x.starts_with("edition") => {
                     data.edition = x[7..].parse::<Edition>().ok();
                 }
-                x if allow_error_code_check && x.starts_with("E") && x.len() == 5 => {
+                x if allow_error_code_check && x.starts_with('E') && x.len() == 5 => {
                     if x[1..].parse::<u32>().is_ok() {
                         data.error_codes.push(x.to_owned());
                         seen_rust_tags = !seen_other_tags || seen_rust_tags;
diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index bda220d8806..59677b28245 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -86,7 +86,7 @@ pub type NameDoc = (String, Option<String>);
 
 crate fn ensure_trailing_slash(v: &str) -> impl fmt::Display + '_ {
     crate::html::format::display_fn(move |f| {
-        if !v.ends_with("/") && !v.is_empty() { write!(f, "{}/", v) } else { write!(f, "{}", v) }
+        if !v.ends_with('/') && !v.is_empty() { write!(f, "{}/", v) } else { write!(f, "{}", v) }
     })
 }
 
diff --git a/src/librustdoc/html/render/cache.rs b/src/librustdoc/html/render/cache.rs
index 3acfb82fe78..e9ebccb7ec0 100644
--- a/src/librustdoc/html/render/cache.rs
+++ b/src/librustdoc/html/render/cache.rs
@@ -534,7 +534,7 @@ fn extern_location(
 
     if let Some(url) = extern_url {
         let mut url = url.to_string();
-        if !url.ends_with("/") {
+        if !url.ends_with('/') {
             url.push('/');
         }
         return Remote(url);
@@ -548,7 +548,7 @@ fn extern_location(
         .filter_map(|a| a.value_str())
         .map(|url| {
             let mut url = url.to_string();
-            if !url.ends_with("/") {
+            if !url.ends_with('/') {
                 url.push('/')
             }
             Remote(url)