Format source codes and update tests

src/expr.rs

@@ -2899,8 +2899,7 @@ pub fn rewrite_assign_rhs<S: Into<String>>(
     shape: Shape,
 ) -> Option<String> {
     let lhs = lhs.into();
-    let last_line_width = last_line_width(&lhs) -
-        if lhs.contains('\n') {
+    let last_line_width = last_line_width(&lhs) - if lhs.contains('\n') {
         shape.indent.width()
     } else {
         0

src/items.rs

@@ -829,8 +829,7 @@ fn rewrite_trait_ref(
     result_len: usize,
 ) -> Option<String> {
     // 1 = space between generics and trait_ref
-    let used_space = 1 + polarity_str.len() +
-        if generics_str.contains('\n') {
+    let used_space = 1 + polarity_str.len() + if generics_str.contains('\n') {
         last_line_width(&generics_str)
     } else {
         result_len + generics_str.len()

src/visitor.rs

@@ -630,9 +630,7 @@ impl<'a> FmtVisitor<'a> {
                 let use_item_length = items_left
                     .iter()
                     .take_while(|ppi| {
-                        is_use_item(&***ppi) &&
-                            (!reorder_imports_in_group ||
-                                {
+                        is_use_item(&***ppi) && (!reorder_imports_in_group || {
                             let current = self.codemap.lookup_line_range(item_bound(&ppi));
                             let in_same_group = current.lo < last.hi + 2;
                             last = current;

tests/target/chains-visual.rs

@@ -118,8 +118,7 @@ fn floaters() {
     })
     .quux();
 
-    a +
-        match x {
+    a + match x {
         true => "yay!",
         false => "boo!",
     }

tests/target/chains.rs

@@ -114,8 +114,7 @@ fn floaters() {
     })
         .quux();
 
-    a +
-        match x {
+    a + match x {
         true => "yay!",
         false => "boo!",
     }.bar()

tests/target/issue-831.rs

@@ -0,0 +1,9 @@
+fn main() {
+    let y = a.iter().any(|x| {
+        println!("a");
+    }) || b.iter().any(|x| {
+        println!("b");
+    }) || c.iter().any(|x| {
+        println!("c");
+    });
+}