From cd3855fb2be78e2dc2d2ca4b8e950d9d9d9081bb Mon Sep 17 00:00:00 2001
From: phanium <91544758+phanen@users.noreply.github.com>
Date: Mon, 10 Feb 2025 00:40:43 +0800
Subject: fix(lua): vim.tbl_get({}, nil, 1) should return nil #32218

Problem:
`vim.tbl_get(tbl, nil, 1)` returns `tbl` itself. In this case, `keys` is not
empty, but `ipairs` skips the iteration:

    local keys = { nil, 1 }
    assert(#keys == 2)
    for i, k in ipairs(keys) do
      assert(false, 'unreachable')
    end

Solution:
Use `select("#", ...)` and `select(i, ...)` to ensure consistency for count and
iteration.
---
 test/functional/lua/vim_spec.lua | 1 +
 1 file changed, 1 insertion(+)

(limited to 'test/functional')

diff --git a/test/functional/lua/vim_spec.lua b/test/functional/lua/vim_spec.lua
index 55e5158596..8e22644339 100644
--- a/test/functional/lua/vim_spec.lua
+++ b/test/functional/lua/vim_spec.lua
@@ -970,6 +970,7 @@ describe('lua stdlib', function()
     )
     eq(NIL, exec_lua("return vim.tbl_get({}, 'missing_key')"))
     eq(NIL, exec_lua('return vim.tbl_get({})'))
+    eq(NIL, exec_lua("return vim.tbl_get({}, nil, 'key')"))
     eq(1, exec_lua("return select('#', vim.tbl_get({}))"))
     eq(1, exec_lua("return select('#', vim.tbl_get({ nested = {} }, 'nested', 'missing_key'))"))
   end)
-- 
cgit