dispatch exec with a tag not working

[zefr0x]

I've done some windowrules to automatically have tabs in alacritty using window groups:

windowrule = group new lock,class:^Alacritty.GROUP_INIT$
windowrule = group invade,class:^Alacritty$

bind = $Mod, Tab, exec, alacritty --class Alacritty.GROUP_INIT

I use the bind to start the main window in a locked group, then when I create another window from inside Alacritty it will be in the same group.

My problem is that my hack relays on changing the window class, which will brake the icon in my waybar. So I want to use tags instead. Also not every application has a --class option like Alacritty.

---

When running hyprctl dispatch exec [float\;tag testtag] -- alacritty --title test or setting it as a bind in my config the tag will not be assigned:

Window 5acfb0376090 -> test:
	mapped: 1
	hidden: 0
	at: 1520,780
	size: 800,600
	workspace: 1 (1)
	floating: 1
	pseudo: 0
	monitor: 0
	class: Alacritty
	title: test
	initialClass: Alacritty
	initialTitle: test
	pid: 7152
	xwayland: 0
	pinned: 0
	fullscreen: 0
	fullscreenClient: 0
	grouped: 0
	tags:
	swallowing: 0
	focusHistoryID: 1
	inhibitingIdle: 0
	xdgTag:
	xdgDescription:

There is no difference if it was alone or with other rules like float.

I know that the exec rules might not work in every case, but the float is working so why not the tag? Is this expected?

As in https://wiki.hyprland.org/Configuring/Window-Rules/#dynamic-rules , the opacity is also a dynamic rule, but it works in exec. So we should be able to do static and dynamic rules in exec?

Setup details:

Hyprland 0.49.0 built from branch  at commit 9958d297641b5c84dcff93f9039d80a5ad37ab00  (version: bump to 0.49.0).
Date: Thu May 8 20:15:18 2025
Tag: v0.49.0, commits: 6098
built against:
 aquamarine 0.8.0
 hyprlang 0.6.3
 hyprutils 0.7.1
 hyprcursor 0.1.12
 hyprgraphics 0.1.3

Config:

bind = SUPER, T, exec, alacritty

debug {
	disable_logs = false
}

Related Logs:

[LOG] Executing  alacritty --title test
[LOG] Process Created with pid 7152
[LOG] Applied 2 rule arguments for exec.
[LOG] Hyprctl: dispatcher exec : [float;tag testtag] alacritty --title test
[LOG] [CXDGOutputProtocol] New xdg_output for HDMI-A-1: client 5acfb025db60 (not xwayland)
[LOG] [CWLSeatProtocol] New seat resource bound at 5acfb0336170
[LOG] [CXDGShellProtocol] New xdg_wm_base at 5acfb03364b0
[LOG] Window 5acfb0328fe0 set title to ~
[LOG] Searching for matching rules for Alacritty (title: ~)
[LOG] [CTextInputV3] New tiv3 at 00005acfb0373d60
[LOG] [CWLCompositorResource] New wl_surface with id 21 at 5acfb0374170
[LOG] [CWLDataDeviceProtocol] New datamgr resource bound at 5acfb03747f0
[LOG] [CPrimarySelectionProtocol] New primary_seletion_manager at 5acfb0374910
[LOG] [CWLSeatProtocol] New seat resource bound at 5acfb0374990
[LOG] [CWLDataDeviceManagerResource] New data device bound at 5acfb0374c70
[LOG] [CPrimarySelectionManager] New primary selection data device bound at 5acfb0375070
[LOG] [CWLCompositorResource] New wl_surface with id 41 at 5acfb0375940
[LOG] [CXDGWMBase] New xdg_surface at 5acfb014c4f0
[LOG] [CXDGSurfaceResource] xdg_surface 5acfb03364b0 gets a toplevel 5acfb0375d60
[LOG] CWLSurface 5acfb032bb00 called init()
[LOG] [CXDGDecoration] setMode: MODE_CLIENT_SIDE. Ignoring and sending MODE_SERVER_SIDE as reply.
[LOG] Window 5acfb0376090 set class to Alacritty
[LOG] Searching for matching rules for Alacritty (title: )
[LOG] Window 5acfb0376090 set title to test
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] Layout predicts size [Vector2D: x: 0, y: 0] for [Window 5acfb0376090: title: "test"]
[LOG] [CXDGSurfaceResource] xdg_surface 5acfb014c4f0 requests geometry 0x0 800x600
[LOG] [CDRMSyncobjManagerResource] New linux_syncobj at 5acfb0375400 for surface 5acfb0375940
[LOG] [CDRMSyncobjManagerResource] New linux_drm_timeline at 5acfb028fc80
[LOG] [CDRMSyncobjManagerResource] New linux_drm_timeline at 5acfb0375240
[LOG] [CDRMSyncobjManagerResource] New linux_drm_timeline at 5acfb03637f0
[LOG] [CDRMSyncobjManagerResource] New linux_drm_timeline at 5acfb03635b0
[LOG] [CDRMSyncobjManagerResource] New linux_drm_timeline at 5acfb0363f10
[LOG] [CLinuxDMABUFParamsResource] Creating a dmabuf, with id 56: size [Vector2D: x: 800, y: 600], fmt AR24, planes 1
[LOG] [CLinuxDMABUFParamsResource]  | plane 0: mod 216172782119018516 fd 113 stride 3200 offset 0
[LOG] New window contains HL_INITIAL_WORKSPACE_TOKEN: 4ad8ae4b-582b-4ed7-8aac-3d806b1d1967
[LOG] HL_INITIAL_WORKSPACE_TOKEN 4ad8ae4b-582b-4ed7-8aac-3d806b1d1967 -> 1
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] Searching for matching rules for Alacritty (title: ~)
[LOG] Set keyboard focus to surface 5acfb0375940, with [Window 5acfb0376090: title: "test"]
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] Map request dispatched, monitor HDMI-A-1, window pos: [1520.00000, 780.00000], window size: [800.00000, 600.00000]
[LOG] Searching for matching rules for Alacritty (title: ~)
[LOG] Searching for matching rules for Alacritty (title: test)
[LOG] cursorImage request: shape 9 -> text
[LOG] [CXDGSurfaceResource] xdg_surface 5acfb014c4f0 requests geometry 0x0 800x600
[LOG] [CLinuxDMABUFParamsResource] Creating a dmabuf, with id 55: size [Vector2D: x: 800, y: 600], fmt AR24, planes 1
[LOG] [CLinuxDMABUFParamsResource]  | plane 0: mod 216172782119018516 fd 107 stride 3200 offset 0
[LOG] [CLinuxDMABUFParamsResource] Creating a dmabuf, with id 57: size [Vector2D: x: 800, y: 600], fmt AR24, planes 1
[LOG] [CLinuxDMABUFParamsResource]  | plane 0: mod 216172782119018516 fd 110 stride 3200 offset 0
[LOG] [CLinuxDMABUFParamsResource] Creating a dmabuf, with id 58: size [Vector2D: x: 800, y: 600], fmt AR24, planes 1
[LOG] [CLinuxDMABUFParamsResource]  | plane 0: mod 216172782119018516 fd 111 stride 3200 offset 0
[LOG] Searching for matching rules for Alacritty (title: test)

[zefr0x]

Update: I found that I can just have this to solve my problem:

windowrule = group invade,class:^Alacritty$

bind = $Mod, Tab, exec, [group new lock] alacritty --class Alacritty.GROUP_INIT

But the tag setting issue still exists.

[vaxerski]

tag is dynamic and gets instantly unset. Mystery solved.