assign/for_window does not expand variables

[zDEFz]

Please fill out the following:

• Sway Version: sway version 1.8.1

  • swaymsg -t get_version or sway -v

• Debug Log:
  on demand

• Configuration File:
  Refer to window_role criteria variable. i3/i3#4660 (reply in thread)
  Sway is not compatible to use that syntax and will just fail to expand the variables

• Description:

As in what I actually use in i3:

set $as assign
set $fw for_window
set $c class
set $R DP-1
set $ws01-R "2"
workspace $ws01-R output $R
$as [$c="^firefox(-nightly)?$"] $ws01-R # take either firefox or firefox nightly

Sway fails to expand the variables.
Could be anything.

Another sample

$fw [$c="^.*steam_app_[0-9]+$"] $mtw $ws04-R

related: #7718

[zDEFz]

Hey, is there any update regarding this issue?