You mean Ctrl+[. I use this sometimes too. You can also use Ctrl+j for enter (in the shell too). Life changing for me was binding my control key (which is, rig

You mean Ctrl+[. I use this sometimes too. You can also use Ctrl+j for enter (in the shell too). Life changing for me was binding my control key (which is, rightfully, in the typical caps lock position) to register as escape when pressed briefly. When held down beyond a certain threshold, it acts as control. This makes for a very handy escape key but combinations with control still work without issue. There are multiple ways to accomplish this, but I use xcape (for X on Linux).