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.
Video: Expand once by simulating key presses and undoing previous abbreviations.. Sorry, your browser does not support embedded videos. Here is a link to the video instead. Expand once by simulating key presses and undoing previous abbreviations. Index: Cache · Source