I might be missing the point, however you can turn off all glyphs of a type via :help nvim-tree.renderer.icons.show

In the git case you could also turn git off via :help nvim-tree.git.enable, to save on git processing.

Is there something higher level that you're after?

In my specific case, I want to use right-aligned git icons. They are very useful, so turning off all glyphs or git processing is out of the question.

However, I want to display only a specific subset of glyphs. In my case, I want to display all glyphs except the "ignore" one. Another usecase I can think of is if someone want to display e.g. only error and warn diagnostics and not the rest.

Currently, for right-aligned icons this is only possible to achieve by setting these unwanted glyphs to non-empty whitespace, " ". If I set them to empty string "", the above mentioned condition fires and disables all glyphs of given type.

However, I want to display only a specific subset of glyphs. In my case, I want to display all glyphs except the "ignore" one. Another usecase I can think of is if someone want to display e.g. only error and warn diagnostics and not the rest.

I see! That would be rather useful for other cases e.g. diagnostic hint icon.

I'd be really grateful if you implemented this one. There's no breakages to worry about as we've not specified current behaviour in the documentation.