Add test for #2794

Author: jrobsonchase

tests/config/issue-2794.toml

@@ -0,0 +1,3 @@
+indent_style = "Block"
+imports_indent = "Block"
+imports_layout = "Vertical"

tests/source/issue-2794.rs

@@ -0,0 +1,3 @@
+use std::{
+    env, fs, io::{Read, Write},
+};

tests/target/issue-2794.rs

@@ -0,0 +1,8 @@
+use std::{
+    env,
+    fs,
+    io::{
+        Read,
+        Write,
+    },
+};