This is what happens when you try to emerge a specific version of something under zsh. I tried this with the default zsh config just to make sure it wasn't my .zshrc screwing things up. The same line works fine under bash so it's definitely zsh. schwartz% emerge =net-misc/omniORB-4.0.5 zsh: net-misc/omniORB-4.0.5 not found
Try emerge \=net-misc/omniORB-4.0.5 or emerge '=net-misc/omniORB-4.0.5' The '=' operator in zsh behaves something like `which` command, so you need to escape it. (zsh-completion doesn't complete version number when you type `emerge net-misc/omni[tab]` but `emerge \=net-misc/omni[tab]` and `emerge '=net-misc/omni[tab]`)
