From 7141109816b361d8c4d4c152fbdff1ccfdbda4dc Mon Sep 17 00:00:00 2001
From: pynappo <pynappo@proton.me>
Date: Mon, 13 Oct 2025 18:47:54 -0700
Subject: [PATCH 1/3] faster path split

---
 lua/neo-tree/utils/init.lua        | 56 ++++++++++++++++++++++++++----
 tests/neo-tree/utils/path_spec.lua |  1 +
 2 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/lua/neo-tree/utils/init.lua b/lua/neo-tree/utils/init.lua
index 1296504b..c927ce04 100644
--- a/lua/neo-tree/utils/init.lua
+++ b/lua/neo-tree/utils/init.lua
@@ -1128,6 +1128,54 @@ M.split_path = function(path)
   if prefix and vim.startswith(prefix, path) then
     return nil, path
   end
+
+  -- this is more than just a root path
+  if path:sub(-1) == M.path_separator then
+    -- trim it off
+    path = path:sub(1, -2)
+  end
+
+  -- old
+  -- local rest_parts = vim.split(rest_of_path, M.path_separator, { plain = true })
+  -- local name = table.remove(rest_parts)
+  -- local parentPath = (prefix or "") .. table.concat(rest_parts, M.path_separator)
+
+  local last_separator_index
+  local i = prefix and #prefix + 1 or 1
+  local j
+  repeat
+    j = path:find(M.path_separator, i, true)
+    if j then
+      last_separator_index = j
+      i = j + 1
+    end
+  until not j
+
+  if not last_separator_index then
+    if not prefix then
+      return nil, path
+    end
+    return prefix, path:sub(#prefix + 1)
+  end
+
+  local parent_path = path:sub(1, last_separator_index - 1)
+  local tail = path:sub(last_separator_index + 1)
+  return parent_path, tail
+end
+
+M.split_path_old = function(path)
+  if not path then
+    return nil, nil
+  end
+  if M.is_windows then
+    path = M.windowize_path(path)
+  end
+  local prefix = M.abspath_prefix(path)
+  if prefix and vim.startswith(prefix, path) then
+    return nil, path
+  end
+
+  -- this is more than just a root path
   if path:sub(-1) == M.path_separator then
     -- trim it off
     path = path:sub(1, -2)
@@ -1136,13 +1184,9 @@ M.split_path = function(path)
   local rest_of_path = prefix and path:sub(#prefix + 1) or path
   local rest_parts = vim.split(rest_of_path, M.path_separator, { plain = true })
   local name = table.remove(rest_parts)
-  local parentPath = (prefix or "") .. table.concat(rest_parts, M.path_separator)
-
-  if #parentPath == 0 then
-    return prefix, name
-  end
+  local parent_path = (prefix or "") .. table.concat(rest_parts, M.path_separator)
 
-  return parentPath, name
+  return parent_path, name
 end
 
 ---Joins arbitrary number of paths together.
diff --git a/tests/neo-tree/utils/path_spec.lua b/tests/neo-tree/utils/path_spec.lua
index ffda1b74..d7e0834a 100644
--- a/tests/neo-tree/utils/path_spec.lua
+++ b/tests/neo-tree/utils/path_spec.lua
@@ -104,6 +104,7 @@ describe("utils path functions", function()
 
       -- Absolute paths
       assert.are.same({ "/a", "b" }, { utils.split_path("/a/b") })
+      assert.are.same({ "/a/b/c/d", "e" }, { utils.split_path("/a/b/c/d/e") })
       assert.are.same({ "/", "a" }, { utils.split_path("/a") })
 
       -- Edge cases

From ca9f43ed1784487fbbdaa9278845dd71caf5b055 Mon Sep 17 00:00:00 2001
From: pynappo <pynappo@proton.me>
Date: Mon, 13 Oct 2025 18:48:44 -0700
Subject: [PATCH 2/3] remove old

---
 lua/neo-tree/utils/init.lua | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/lua/neo-tree/utils/init.lua b/lua/neo-tree/utils/init.lua
index c927ce04..c626ffef 100644
--- a/lua/neo-tree/utils/init.lua
+++ b/lua/neo-tree/utils/init.lua
@@ -1163,32 +1163,6 @@ M.split_path = function(path)
   return parent_path, tail
 end
 
-M.split_path_old = function(path)
-  if not path then
-    return nil, nil
-  end
-  if M.is_windows then
-    path = M.windowize_path(path)
-  end
-  local prefix = M.abspath_prefix(path)
-  if prefix and vim.startswith(prefix, path) then
-    return nil, path
-  end
-
-  -- this is more than just a root path
-  if path:sub(-1) == M.path_separator then
-    -- trim it off
-    path = path:sub(1, -2)
-  end
-
-  local rest_of_path = prefix and path:sub(#prefix + 1) or path
-  local rest_parts = vim.split(rest_of_path, M.path_separator, { plain = true })
-  local name = table.remove(rest_parts)
-  local parent_path = (prefix or "") .. table.concat(rest_parts, M.path_separator)
-
-  return parent_path, name
-end
-
 ---Joins arbitrary number of paths together.
 ---@param ... string The paths to join.
 ---@return string

From 6d0bc7825e810717fe59f78c10e0affba35bba30 Mon Sep 17 00:00:00 2001
From: pynappo <pynappo@proton.me>
Date: Mon, 13 Oct 2025 18:54:43 -0700
Subject: [PATCH 3/3] Remove comment

---
 lua/neo-tree/utils/init.lua | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/lua/neo-tree/utils/init.lua b/lua/neo-tree/utils/init.lua
index c626ffef..2550b887 100644
--- a/lua/neo-tree/utils/init.lua
+++ b/lua/neo-tree/utils/init.lua
@@ -1135,11 +1135,6 @@ M.split_path = function(path)
     path = path:sub(1, -2)
   end
 
-  -- old
-  -- local rest_parts = vim.split(rest_of_path, M.path_separator, { plain = true })
-  -- local name = table.remove(rest_parts)
-  -- local parentPath = (prefix or "") .. table.concat(rest_parts, M.path_separator)
-
   local last_separator_index
   local i = prefix and #prefix + 1 or 1
   local j