fix(utils): improve system command argument parsing

lua/astronvim/utils/git.lua

@@ -11,9 +11,10 @@ local git = { url = "https://github.com/" }
 local function trim_or_nil(str) return type(str) == "string" and vim.trim(str) or nil end
 
 --- Run a git command from the AstroNvim installation directory
----@param args string[] the git arguments
+---@param args string|string[] the git arguments
 ---@return string|nil # The result of the command or nil if unsuccessful
 function git.cmd(args, ...)
+  if type(args) == "string" then args = { args } end
   return require("astronvim.utils").cmd(vim.list_extend({ "git", "-C", astronvim.install.home }, args), ...)
 end
 

lua/astronvim/utils/init.lua

@@ -308,7 +308,7 @@ end
 ---@param show_error? boolean Whether or not to show an unsuccessful command as an error to the user
 ---@return string|nil # The result of a successfully executed command or nil
 function M.cmd(cmd, show_error)
-  if type(cmd) == "string" then cmd = vim.split(cmd, " ") end -- HACK: remove in AstroNvim v4 and require cmd to be a string[]
+  if type(cmd) == "string" then cmd = { cmd } end
   if vim.fn.has "win32" == 1 then cmd = vim.list_extend({ "cmd.exe", "/C" }, cmd) end
   local result = vim.fn.system(cmd)
   local success = vim.api.nvim_get_vvar "shell_error" == 0