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I'm working on a javascript project that has inconsistent tab sizes 2spaces vs 4spaces on the server and client. I'm using web-mode for javascript editing. I'm looking for a feature like SublimeTexts detect_indentation

I have tried: https://github.com/emacsmirror/fuzzy-format https://github.com/jscheid/dtrt-indent

And neither have worked

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  • I've had some success with dtrt-indent and javascript-mode when using Spacemacs. It doesn't look like they have bindings yet for web-mode, but if you know what variables it would need to override, it probably wouldn't be difficult to add.
    – danShumway
    Jul 16, 2017 at 2:56
  • have a try with emacswiki.org/emacs/fuzzy-format.el
    – djangoliv
    Oct 30, 2017 at 16:58
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    It seems that dirt-indent isn't aware of variables used by web-mode, so it would need having them added to support it.
    – user12563
    Dec 29, 2017 at 13:41
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    "...neither have worked" -- please describe specifically what you have done, and detail what isn't working (what you expect, and what actually happens) with examples. Without this information, the question is very unclear.
    – phils
    Aug 26, 2018 at 21:47

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As Python allows to change the indent blockwise, there is related stuff in Python-modes.

python-mode.el uses py-guess-indent-offset, built-in python.el uses python-indent-guess-indent-offset

Wondering how many people are interested in generalising these proceedings.

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