They mention 'readline' under 'shells', but it's really more general than that. For instance, you can configure plain commandline GDB to use vim key bindings th

They mention 'readline' under 'shells', but it's really more general than that. For instance, you can configure plain commandline GDB to use vim key bindings that way, and any other program that uses readline. Similar can be done for 'editline' (a readline alternative sometimes seen on BSD systems).