From 1771dfca08538a501ec2a2be438f09ff76a25c7b Mon Sep 17 00:00:00 2001
From: Seiichi Uchida <seuchida@gmail.com>
Date: Sun, 1 Oct 2017 21:20:15 +0900
Subject: [PATCH] Break after '=' if a single line rhs exceeds max width

---
 src/expr.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/expr.rs b/src/expr.rs
index 9b59e0cbd787..de2166bddbe4 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -2895,7 +2895,7 @@ pub fn rewrite_assign_rhs<S: Into<String>>(
     let rhs = try_opt!(choose_rhs(
         context,
         ex,
-        shape,
+        orig_shape,
         ex.rewrite(context, orig_shape)
     ));
     Some(lhs + &rhs)
@@ -2908,7 +2908,9 @@ fn choose_rhs(
     orig_rhs: Option<String>,
 ) -> Option<String> {
     match orig_rhs {
-        Some(ref new_str) if !new_str.contains('\n') => Some(format!(" {}", new_str)),
+        Some(ref new_str) if !new_str.contains('\n') && new_str.len() <= shape.width => {
+            Some(format!(" {}", new_str))
+        }
         _ => {
             // Expression did not fit on the same line as the identifier.
             // Try splitting the line and see if that works better.