rename the fn_args_layout associated enum from Density to ItemsLayout

src/config/mod.rs

@@ -92,7 +92,8 @@ create_config! {
         the same line with the pattern of arms";
     force_multiline_blocks: bool, false, false,
         "Force multiline closure bodies and match arms to be wrapped in a block";
-    fn_args_layout: Density, Density::Tall, true, "Argument density in functions";
+    fn_args_layout: ItemsLayout, ItemsLayout::Tall, true,
+        "Control the layout of arguments in a function";
     brace_style: BraceStyle, BraceStyle::SameLineWhere, false, "Brace style for items";
     control_brace_style: ControlBraceStyle, ControlBraceStyle::AlwaysSameLine, false,
         "Brace style for control flow constructs";

src/config/options.rs

@@ -58,7 +58,7 @@ pub enum IndentStyle {
 
 #[config_type]
 /// How to place a list-like items.
-pub enum Density {
+pub enum ItemsLayout {
     /// Fit as much on one line as possible.
     Compressed,
     /// Items are placed horizontally if sufficient space, vertically otherwise.
@@ -87,13 +87,13 @@ pub enum Heuristics {
     Default,
 }
 
-impl Density {
+impl ItemsLayout {
     pub fn to_list_tactic(self, len: usize) -> ListTactic {
         match self {
-            Density::Compressed => ListTactic::Mixed,
-            Density::Tall => ListTactic::HorizontalVertical,
-            Density::Vertical if len == 1 => ListTactic::Horizontal,
-            Density::Vertical => ListTactic::Vertical,
+            ItemsLayout::Compressed => ListTactic::Mixed,
+            ItemsLayout::Tall => ListTactic::HorizontalVertical,
+            ItemsLayout::Vertical if len == 1 => ListTactic::Horizontal,
+            ItemsLayout::Vertical => ListTactic::Vertical,
         }
     }
 }