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Editorial Team
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Asked: 2026-06-16T20:25:03+00:00

I want to write a vim plugin that does certain text transformations to the

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I want to write a vim plugin that does certain text transformations to the text while in the editor, but I don’t want these transformations visible inside the file.

As an example, consider the word Gnarly in a text file I want to edit. Upon load I would want my vim script change that to G, but when I save the buffer I want it to expanded back to Gnarly.

My scenario is a little bit more complex because it will involve an external script, but I want to see exactly how that would be invoked.

Also I’d want to be able to apply this change only to some files based on their extension.

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1 Answer

  1. Editorial Team

    See :h autocmd. The events you need are BufRead and BufWrite.

    Maybe you will be interested by :h conceal.

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