The interest in TUIs online is high. In the real world you tend to be constrained and blindfolded by the tools available/allowed. Filtering is peculiar though.

See how the terminal/editor splits? Filtering makes them kiss? Commands that input|output (pipe) work best (compilers, transpilers and code generators). The meta is the limit.

File name, spelling, and dictionary completion exist too. This is tortured, but combining them makes a meta point? The “meta” is hard to convey, but completion doubles as a way of finding, changing, and passing keywords around. Terminals are fair game too. That’s basic completion in a nutshell (minus the magic).

Command line completion is probably another lesser known one. The command line window is minimized, but typing q: (commands) and q/ or q? (search forward/backward) opens it up completely. Wild mode configures its behaviour.

Abbreviations are another completion primitive in Vim. Since it’s full auto, it wants to be magical. <Key> presses and scripts can be replayed. Paired with custom completions and output from external tools, it transforms into advanced witchcraft and/or cursed sorcery. In my case, it just expands acronyms.