Menubar not capable of spawning at the initial tag (when a programs takes long to load)

[RobberFox]

awesome v4.3 (Too long)
 • Compiled against Lua 5.3.6 (running with Lua 5.3)
 • D-Bus support: ✔
 • execinfo support: ✔
 • xcb-randr version: 1.6
 • LGI version: 0.9.2

How to reproduce the issue:
With menubar, open an app that takes long to load.
Switch to a different tag.

Actual result:
The program will spawn at that different tag, instead of the tag I started spawning in.

Expected result:
It would be great to have an option to allow menubar to keep the program at the tag I started spawning in, just like with awful.spawn("someprogram", { tag = mouse.screen.selected_tag })

[actionless]

i think it could be related to this: https://github.com/awesomeWM/awesome/issues?q=is%3Aissue+startup_id

[Aire-One]

My understanding is that @RobberFox needs a way to specify the sn_rules passed to the spawn command https://github.com/awesomeWM/awesome/blob/master/lib%2Fmenubar%2Finit.lua#L211

[actionless]

ah, i thought his problem that he did that change but client is not being moved to that tag