From ceb7c440a19acc4459f87882309e876070997d16 Mon Sep 17 00:00:00 2001
From: pagedown <pg.dn@outlook.com>
Date: Sat, 15 Jan 2022 00:16:26 +0800
Subject: [PATCH] Shell integration: Only override default fish_title

---
 .../kitty-shell-integration.fish              | 20 ++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/shell-integration/fish/vendor_conf.d/kitty-shell-integration.fish b/shell-integration/fish/vendor_conf.d/kitty-shell-integration.fish
index 1eb993ce9..ca994f97f 100644
--- a/shell-integration/fish/vendor_conf.d/kitty-shell-integration.fish
+++ b/shell-integration/fish/vendor_conf.d/kitty-shell-integration.fish
@@ -55,13 +55,21 @@ function _ksi_main
     end
 
     if not contains "no-title" $_ksi
-        function fish_title
-            if set -q argv[1]
-                echo $argv[1]
-            else
-                prompt_pwd
+        function _ksi_function_is_not_overridden -d "Check if the specified function is not overridden"
+            string match -q -- "$__fish_data_dir/functions/*" (functions --details $argv[1])
+        end
+
+        if _ksi_function_is_not_overridden fish_title
+            function fish_title
+                if set -q argv[1]
+                    echo $argv[1]
+                else
+                    prompt_pwd
+                end
             end
         end
+
+        functions --erase _ksi_function_is_not_overridden
     end
 
     if not contains "no-prompt-mark" $_ksi
@@ -131,6 +139,8 @@ function _ksi_main
         # with prompt marking kitty clears the current prompt on resize so we need
         # fish to redraw it
         set --global fish_handle_reflow 1
+
+        functions --erase _ksi_function_is_not_empty
     end
     functions --erase _ksi_main _ksi_schedule
 end