refactor: `trashFile` uses new nvim API

lua/genghis/init.lua

@@ -224,40 +224,30 @@ end
 
 ---@param opts? { trashCmd: string }
 function M.trashFile(opts)
-	if opts == nil then opts = {} end
+	local userCmd = opts and opts.trashCmd
-	local defaultTrashCmds = {
+	local defaultCmd
-		macos = "trash", -- not installed by default
+	if fn.has("mac") == 1 then defaultCmd = "trash" end
-		windows = "trash", -- not installed by default
+	if fn.has("linux") == 1 then defaultCmd = "trash" end
-		linux = "gio trash",
+	if fn.has("win32") == 1 then defaultCmd = "gio trash" end
-	}
+	local trashCmd = userCmd or defaultCmd
-
+	assert(defaultCmd, "Unknown operating system & no custom trashCmd provided.")
-	cmd("silent! update")
-
-	local system
-	if fn.has("mac") == 1 then system = "macos" end
-	if fn.has("linux") == 1 then system = "linux" end
-	if fn.has("win32") == 1 then system = "windows" end
-	local trashCmd = opts.trashCmd or defaultTrashCmds[system]
 
 	-- Use a trash command
 	local trashArgs = vim.split(trashCmd, " ")
 	local oldFilePath = vim.api.nvim_buf_get_name(0)
 	table.insert(trashArgs, oldFilePath)
 
-	local errMsg = ""
+	cmd("silent! update")
-	vim.fn.jobstart(trashArgs, {
+	vim.system(trashArgs, { detach = true }, function(out)
-		detach = true,
-		on_stderr = function(_, data) errMsg = errMsg .. (data and table.concat(data, " ")) end,
-		on_exit = function(_, rc)
 		local oldName = vim.fs.basename(oldFilePath)
-			if rc == 0 then
+		if out.code == 0 then
 			u.bwipeout()
 			u.notify(("%q deleted"):format(oldName))
 		else
-				u.notify(("Trashing %q failed: " .. errMsg):format(oldName), "error")
+			local outmsg = out.stdout .. out.stderr
+			u.notify(("Trashing %q failed: " .. outmsg):format(oldName), "error")
 		end
-		end,
+	end)
-	})
 end
 
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