diff options
| -rw-r--r-- | runtime/lua/vim/shared.lua | 5 | ||||
| -rw-r--r-- | test/functional/lua/vim_spec.lua | 42 |
2 files changed, 47 insertions, 0 deletions
diff --git a/runtime/lua/vim/shared.lua b/runtime/lua/vim/shared.lua index ea1117a906..36df24d0c1 100644 --- a/runtime/lua/vim/shared.lua +++ b/runtime/lua/vim/shared.lua @@ -20,6 +20,11 @@ vim.deepcopy = (function() local deepcopy_funcs = { table = function(orig) local copy = {} + + if getmetatable(orig) == vim._empty_dict_mt then + copy = vim.empty_dict() + end + for k, v in pairs(orig) do copy[vim.deepcopy(k)] = vim.deepcopy(v) end diff --git a/test/functional/lua/vim_spec.lua b/test/functional/lua/vim_spec.lua index e879f8b925..b8edd7b3e0 100644 --- a/test/functional/lua/vim_spec.lua +++ b/test/functional/lua/vim_spec.lua @@ -322,6 +322,48 @@ describe('lua stdlib', function() ]]) assert(is_dc) + + local is_empty_list = exec_lua([[ + local a = {} + local b = vim.deepcopy(a) + + local count = 0 + for _ in pairs(b) do count = count + 1 end + + return getmetatable(b) ~= vim._empty_dict_mt + and count == 0 + and tostring(a) ~= tostring(b) + ]]) + + assert(is_empty_list) + + local is_empty_dic = exec_lua([[ + local a = vim.empty_dict() + local b = vim.deepcopy(a) + + local count = 0 + for _ in pairs(b) do count = count + 1 end + + return getmetatable(b) == vim._empty_dict_mt + and count == 0 + ]]) + + assert(is_empty_dic) + + local include_empty_dic = exec_lua([[ + local a = {x = vim.empty_dict(), y = {}} + local b = vim.deepcopy(a) + + local count = 0 + for _ in pairs(b) do count = count + 1 end + + return getmetatable(b.x) == vim._empty_dict_mt + and getmetatable(b.y) ~= vim._empty_dict_mt + and count == 2 + and tostring(a) ~= tostring(b) + ]]) + + assert(include_empty_dic) end) it('vim.pesc', function() |