diff --git a/crates/editor/src/display_map.rs b/crates/editor/src/display_map.rs
index ced92c6e13..45ecc37b77 100644
--- a/crates/editor/src/display_map.rs
+++ b/crates/editor/src/display_map.rs
@@ -746,7 +746,7 @@ impl DisplayRow {
         DisplayRow(display_row)
     }
 
-    pub fn to_line_span(&self, display_map: &DisplaySnapshot) -> Range<DisplayPoint> {
+    pub fn to_points(&self, display_map: &DisplaySnapshot) -> Range<DisplayPoint> {
         self.start()..self.end(&display_map)
     }
 
@@ -762,11 +762,6 @@ impl DisplayRow {
         }
     }
 
-    // TODO: Remove and use next_row
-    fn next_unchecked(&self) -> Option<DisplayRow> {
-        Some(DisplayRow(self.0 + 1))
-    }
-
     pub fn next_rows(
         &self,
         display_map: &DisplaySnapshot,
@@ -788,7 +783,7 @@ impl DisplayRow {
                 if current == None {
                     current = Some(start);
                 } else {
-                    current = current.unwrap().next_unchecked();
+                    current = Some(DisplayRow(current.unwrap().0 + 1))
                 }
                 if current.unwrap().0 > end_row.0 {
                     None
diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index b185ddef92..3d88c69ebd 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -85,7 +85,7 @@ use std::{
 };
 pub use sum_tree::Bias;
 use theme::{DiagnosticStyle, Theme};
-use util::{post_inc, MapRangeEndsExt, RangeExt, ResultExt, TryFutureExt};
+use util::{post_inc, RangeExt, ResultExt, TryFutureExt};
 use workspace::{ItemNavHistory, ViewId, Workspace, WorkspaceId};
 
 use crate::git::diff_hunk_to_display;
@@ -5738,7 +5738,7 @@ impl Editor {
                 let fold_range = display_map
                     .foldable_range(DisplayRow::new(row))
                     .map(|range| {
-                        range.map_range(|display_point| display_point.to_point(&display_map))
+                        range.start.to_point(&display_map)..range.end.to_point(&display_map)
                     });
 
                 if let Some(fold_range) = fold_range {
@@ -5761,29 +5761,23 @@ impl Editor {
         let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 
         if let Some(fold_range) = display_map.foldable_range(display_row) {
-            let autoscroll = self.selections_intersect(&fold_range, &display_map, cx);
+            let autoscroll = {
+                let selections = self.selections.all::<Point>(cx);
 
-            let point_range =
-                fold_range.map_range(|display_point| display_point.to_point(&display_map));
+                selections.iter().any(|selection| {
+                    let display_range = selection.display_range(&display_map);
 
-            self.fold_ranges(std::iter::once(point_range), autoscroll, cx);
+                    fold_range.overlaps(&display_range)
+                })
+            };
+
+            let fold_range =
+                fold_range.start.to_point(&display_map)..fold_range.end.to_point(&display_map);
+
+            self.fold_ranges(std::iter::once(fold_range), autoscroll, cx);
         }
     }
 
-    fn selections_intersect(
-        &mut self,
-        range: &Range<DisplayPoint>,
-        display_map: &DisplaySnapshot,
-        cx: &mut ViewContext<Editor>,
-    ) -> bool {
-        let selections = self.selections.all::<Point>(cx);
-
-        selections.iter().any(|selection| {
-            let display_range = selection.display_range(display_map);
-            range.contains(&display_range.start) || range.contains(&display_range.end)
-        })
-    }
-
     pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
         let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
         let buffer = &display_map.buffer_snapshot;
@@ -5805,12 +5799,19 @@ impl Editor {
     pub fn unfold_at(&mut self, fold_at: &UnfoldAt, cx: &mut ViewContext<Self>) {
         let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 
-        let unfold_range = fold_at.display_row.to_line_span(&display_map);
+        let unfold_range = fold_at.display_row.to_points(&display_map);
 
-        let autoscroll = self.selections_intersect(&unfold_range, &display_map, cx);
+        let autoscroll = {
+            let selections = self.selections.all::<Point>(cx);
+            selections.iter().any(|selection| {
+                let display_range = selection.display_range(&display_map);
 
-        let unfold_range = unfold_range.map_range(|endpoint| endpoint.to_point(&display_map));
+                unfold_range.overlaps(&display_range)
+            })
+        };
 
+        let unfold_range =
+            unfold_range.start.to_point(&display_map)..unfold_range.end.to_point(&display_map);
         self.unfold_ranges(std::iter::once(unfold_range), true, autoscroll, cx)
     }
 
diff --git a/crates/util/src/util.rs b/crates/util/src/util.rs
index c0f08ac32e..5ecf889f9b 100644
--- a/crates/util/src/util.rs
+++ b/crates/util/src/util.rs
@@ -145,23 +145,6 @@ where
     }
 }
 
-pub trait MapRangeEndsExt<R> {
-    fn map_range<T, F>(self, f: F) -> Range<T>
-    where
-        Self: Sized,
-        F: Fn(R) -> T;
-}
-
-impl<R> MapRangeEndsExt<R> for Range<R> {
-    fn map_range<T, F>(self, f: F) -> Range<T>
-    where
-        Self: Sized,
-        F: Fn(R) -> T,
-    {
-        f(self.start)..f(self.end)
-    }
-}
-
 pub struct LogErrorFuture<F>(F, log::Level);
 
 impl<F, T> Future for LogErrorFuture<F>
@@ -254,7 +237,7 @@ macro_rules! iife {
     };
 }
 
-/// Async lImmediately invoked function expression. Good for using the ? operator
+/// Async Immediately invoked function expression. Good for using the ? operator
 /// in functions which do not return an Option or Result. Async version of above
 #[macro_export]
 macro_rules! async_iife {
@@ -279,10 +262,7 @@ impl<T: Ord + Clone> RangeExt<T> for Range<T> {
     }
 
     fn overlaps(&self, other: &Range<T>) -> bool {
-        self.contains(&other.start)
-            || self.contains(&other.end)
-            || other.contains(&self.start)
-            || other.contains(&self.end)
+        self.start < other.end && other.start < self.end
     }
 }
 
@@ -296,10 +276,7 @@ impl<T: Ord + Clone> RangeExt<T> for RangeInclusive<T> {
     }
 
     fn overlaps(&self, other: &Range<T>) -> bool {
-        self.contains(&other.start)
-            || self.contains(&other.end)
-            || other.contains(&self.start())
-            || other.contains(&self.end())
+        self.start() < &other.end && &other.start <= self.end()
     }
 }