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Emacs-lisp code for deleting whitespaces on save #588

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Sep 20, 2021
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Emacs-lisp code for deleting whitespaces on save #588

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632eca8
Auto delete whitespaces in emacs
felixwellen Jul 29, 2021
657b9f9
Find correct syntax
felixwellen Jul 29, 2021
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felixwellen Jul 29, 2021
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11 changes: 10 additions & 1 deletion CONTRIBUTING.md
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Expand Up @@ -64,7 +64,16 @@ When preparing a PR here are some general guidelines:
editing files by adding `(setq-default show-trailing-whitespace t)`
to `~/.emacs`. The command `M-x delete-trailing-whitespace` is also
very useful. It is possible to add a hook that runs this command
automatically when saving Agda files.
automatically when saving Agda files, by adding the following to your
`~/.emacs`:
```
;; delete trailing whitespace before saving in agda-mode
(defun agda-mode-delete-whitespace-before-save ()
(when (eq major-mode 'agda2-mode)
(delete-trailing-whitespace)))

(add-hook 'before-save-hook #'agda-mode-delete-whitespace-before-save)
```

- Use copattern-matching when instantiating records for efficiency.
This seems especially important when constructing Iso's.
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