From 6432a1927a80c44255940851d3d70d0d86d4faf4 Mon Sep 17 00:00:00 2001
From: Harri Taylor <7202769+harritaylor@users.noreply.github.com>
Date: Mon, 3 Jul 2023 10:17:28 +0100
Subject: [PATCH] feat(editor): Allow Ctrl-[ to function as Escape

Issue:  https://github.com/helix-editor/helix/issues/6551
---
 helix-view/src/input.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/helix-view/src/input.rs b/helix-view/src/input.rs
index d8832adce11e..4ae52bf73f9f 100644
--- a/helix-view/src/input.rs
+++ b/helix-view/src/input.rs
@@ -488,6 +488,16 @@ impl From<crossterm::event::KeyEvent> for KeyEvent {
                 code: KeyCode::Tab,
                 modifiers,
             }
+        } else if code == crossterm::event::KeyCode::Char('[')
+            && modifiers.contains(crossterm::event::KeyModifiers::CONTROL)
+        {
+            // Support Ctrl-[ as ESC for terminals that support sending Ctrl-[
+            let mut modifiers = modifiers;
+            modifiers.remove(crossterm::event::KeyModifiers::CONTROL);
+            Self {
+                code: KeyCode::Esc,
+                modifiers: modifiers.into(),
+            }
         } else {
             Self {
                 code: code.into(),