Putting Bitwise operators in function param does not provide completion

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

Windows

What is the issue affecting?

Annotations

Reproduction steps

I have the following code

local FONTFLAG_NONE = 0
local FONTFLAG_ITALIC = 0x001
local FONTFLAG_UNDERLINE = 0x002
local FONTFLAG_STRIKEOUT = 0x004
local FONTFLAG_SYMBOL = 0x008
local FONTFLAG_ANTIALIAS = 0x010
local FONTFLAG_GAUSSIANBLUR = 0x020
local FONTFLAG_ROTARY = 0x040
local FONTFLAG_DROPSHADOW = 0x080
local FONTFLAG_ADDITIVE = 0x100
local FONTFLAG_OUTLINE = 0x200
local FONTFLAG_CUSTOM = 0x400
local FONTFLAG_BITMAP = 0x800

---@alias FontFlags
---| `FONTFLAG_NONE` # 0
---| `FONTFLAG_ITALIC` # 1 (0x001)
---| `FONTFLAG_UNDERLINE` # 2 (0x002)
---| `FONTFLAG_STRIKEOUT` # 4 (0x004)
---| `FONTFLAG_SYMBOL` # 8 (0x008)
---| `FONTFLAG_ANTIALIAS` # 16 (0x010)
---| `FONTFLAG_GAUSSIANBLUR` # 32 (0x020)
---| `FONTFLAG_ROTARY` # 64 (0x040)
---| `FONTFLAG_DROPSHADOW` # 128 (0x080)
---| `FONTFLAG_ADDITIVE` # 256 (0x100)
---| `FONTFLAG_OUTLINE` # 512 (0x200)
---| `FONTFLAG_CUSTOM` # 1024 (0x400)
---| `FONTFLAG_BITMAP` # 2048 (0x800)

---@param name string
---@param height integer
---@param weight integer
---@param flags FontFlags|integer
---@return integer
---@nodiscard
function draw.CreateFont(name, height, weight, flags) end

Here, type completion does provide suggestion if param has not been filled

After that, i input a | character and open suggestion dialog again, and there's no more FontFlags type

I found a "hack" that works by changing function prototype

---@param name string
---@param height integer
---@param weight integer
---@param ... FontFlags|integer
---@return integer
---@nodiscard
function draw.CreateFont(name, height, weight, ...) end

However this hack is not ideal

Additional Notes

No response

Log File

No response

在 Visual Studio Code 擴充功能中，使用提供的 Lua 註解和函式原型重現此問題。先比較在 flags 參數中輸入 | 前後的補全結果；當位元運算子之後仍可提供 FontFlags 建議時，即表示完成。