From 31dfee8a95895601a8e06dc2c0d5fd967b0fd36a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 8 Jul 2022 20:28:42 +0530
Subject: [PATCH] Nicer error message for zsh versions before 5.1

---
 shell-integration/zsh/.zshenv | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/shell-integration/zsh/.zshenv b/shell-integration/zsh/.zshenv
index 7a087f8ae..e75538c0a 100644
--- a/shell-integration/zsh/.zshenv
+++ b/shell-integration/zsh/.zshenv
@@ -27,6 +27,11 @@ fi
     [[ ! -r "$_ksi_file" ]] || 'builtin' 'source' '--' "$_ksi_file"
 } always {
     if [[ -o 'interactive' && -n "${KITTY_SHELL_INTEGRATION-}" ]]; then
+        'builtin' 'autoload' '--' 'is-at-least'
+        'is-at-least' "5.1" || {
+            builtin echo "ZSH ${ZSH_VERSION} is too old for kitty shell integration" > /dev/stderr
+            return
+        }
         # ${(%):-%x} is the path to the current file.
         # On top of it we add :A:h to get the directory.
         'builtin' 'typeset' _ksi_file="${${(%):-%x}:A:h}"/kitty-integration