DidYouMean Vim plugin is very simple: it asks you if the file you are trying to open is indeed the right file. How is this useful? Here’s how:

Say you have two files with a similarly starting names: model.py and model_test.py. You type vim mo, you hit tab to autocomplete the name, you hit enter. In vanilla Vim, you’d be opening a new file: model, since that’s where shell’s tab-completion stopped. DidYouMean detects such a nuance and asks you if you wanted to open model, model.py, or model_test.py.

Simple idea, and instantly after trying this out, I would really expect this feature to be included in vanilla Vim.