icons don't appear with `counsel-git-grep` and `counsel-rg`

[blue0513]

Thx for this great package, I can easily choose files by counsel-find-file or so.

But when I use counsel-git-grep or counsel-rg, icons don't appear in minibuffer.
Is it known limitation?

[asok]

I haven't thought about adding icons to the "grep" commands. I would need to dig into them and see if they use something similar like the completion commands.