Those of you who use org for your emacs config, how can I enable
completion-at-point in org source blocks?
reddit / emacs

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MarkofCorn · 2022-04-22 20:24

I think company can do this, but I use corfu, which extends the built
in completion-at-point function. When I manually trigger completion,
nothing happens.

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jacobissimus · 2022-04-22 23:51

Source blocks open in the major mode specified by the header
arguments—there’s nothing different about completions in the source
blocks’ pop up and any other emacs-lisp-mode buffer.

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MarkofCorn · 2022-04-23 00:41

I figured it out, I was missing a completion function for it. Issue
was fixed by adding cape and enabling a completion "backend"

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0lMon · 2022-04-23 01:28

Greetings,

Can you expand more on your solution?

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MarkofCorn · 2022-04-23 01:48

Sure! So corfu basically just provides UI for completion at point
functions (capfs). [Cape](https://github.com/minad/cape) (completion
at point extension) is another package written by the same author that
adds more capfs when they aren't provided by something like a language
server. If you are familiar with company at all, think of company
backends. I only have the elisp symbol extension turned on at the
moment; more are listed on the repo. After I enabled an extension,
corfu autocomplete worked as expected.

    (use-package cape
      :init
      (add-to-list 'completion-at-point-functions 'cape-symbol)
      ;; (add-to-list 'completion-at-point-functions 'cape-dabbrev)
      )

tl;dr: my issue was that I didn't have a completion "backend" being
provided by something like a language server, so I needed to add my
own