Window "tagging" via window rules

[zetaPRIME]

A pair of keywords for window rules, tag "name" and remove-tag "name"; they simply add or remove entries from an array of strings tags returned as part of the json object corresponding to the window in question for niri msg -j windows and niri msg -j focused-window.

This would allow defining quick rules for particular windows within your compositor settings for your setup's external tooling to operate upon, such as, for example, tweaking your power profile depending on whether or not you have a game currently focused.

[YaLTeR]

Hm, shouldn't it be just tag "name", then windows that match it have the tag and windows that don't match don't have the tag?

[zetaPRIME]

figure it's best to allow overriding a tag's presence in higher priority matches, to match the pattern of other window rule attributes?

[YaLTeR]

Ah, right. That would be tag null I guess