feat(commands): ensure_selections_forward (#1393)

* feat(commands): ensure_selections_forward

Add command that ensures that selections are in forward direction.

Fixes: https://github.com/helix-editor/helix/issues/1332

* Add keybinding for ensure_selections_forward

Add `A-:` keybinding for the ensure_selections_forward command.

* Re-use range.flip for flip_selections command

1 files changed, 9 insertions, 0 deletions

diff --git a/helix-core/src/selection.rs b/helix-core/src/selection.rs
index 884c98ac..06ea9d67 100644
--- a/helix-core/src/selection.rs
+++ b/helix-core/src/selection.rs
@@ -122,6 +122,15 @@ impl Range {
         }
     }
 
+    // flips the direction of the selection
+    pub fn flip(&self) -> Self {
+        Self {
+            anchor: self.head,
+            head: self.anchor,
+            horiz: self.horiz,
+        }
+    }
+
     /// Check two ranges for overlap.
     #[must_use]
     pub fn overlaps(&self, other: &Self) -> bool {