Merge pull request #2005 from topecongiro/issue-2003

Put the opening brace of fn body on the next line if it exceeds max width

Author: nrc

src/items.rs

@@ -250,11 +250,12 @@ impl<'a> FmtVisitor<'a> {
             true,
         ));
 
-        if force_newline_brace {
+        if self.config.fn_brace_style() == BraceStyle::AlwaysNextLine || force_newline_brace {
             newline_brace = true;
-        } else if self.config.fn_brace_style() != BraceStyle::AlwaysNextLine
-            && !result.contains('\n')
-        {
+        } else if last_line_width(&result) + 2 > self.shape().width {
+            // 2 = ` {`
+            newline_brace = true;
+        } else if !result.contains('\n') {
             newline_brace = false;
         }
 

tests/source/fn-simple.rs

@@ -52,3 +52,10 @@ pub fn waltz(cwd: &Path) -> CliAssert {
         }
     }
 }
+
+// #2003
+mod foo {
+    fn __bindgen_test_layout_i_open0_c_open1_char_a_open2_char_close2_close1_close0_instantiation() {
+        foo();
+    }
+}

tests/target/fn-simple.rs

@@ -93,3 +93,11 @@ pub fn waltz(cwd: &Path) -> CliAssert {
         }
     }
 }
+
+// #2003
+mod foo {
+    fn __bindgen_test_layout_i_open0_c_open1_char_a_open2_char_close2_close1_close0_instantiation()
+    {
+        foo();
+    }
+}