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There are vim bindings in most (if not all) popular IDEs so learning the base keystrokes can be lifted up to these at a later point.

They did explain that they based there decision based off the most popular command line editor (based on a stack overflow survey). Although it would probably be good to at least reference other popular / useful ones for exploratory purposes, for a quick overview course I think focusing on vim makes ample sense.

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Emacs bindings are also included by default in unix and Mac across all text fields, including browsers. Not arguing, just pointing out that I still think it's intellectually lazy. I detest vim every time I use it, and even when I was a CS student it wasn't that difficult to just learn how to use emacs or notepad++. The hard part is gaining the awareness, and that's what I would imagine one of the goals of teaching should be.

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