the usual .pre-commit-config.yaml and applying

.editorconfig

@@ -10,3 +10,7 @@ indent_size = tab
 [*.{yaml,yml,cff}]
 indent_style = space
 indent_size = 2
+
+[*.md]
+indent_style = space
+indent_size = 3

.pre-commit-config.yaml

@@ -13,6 +13,7 @@ repos:
       - id: check-shebang-scripts-are-executable
       - id: destroyed-symlinks
       - id: detect-private-key
+      - id: end-of-file-fixer
       - id: fix-byte-order-marker
 
   - repo: https://github.com/python-jsonschema/check-jsonschema
@@ -22,3 +23,13 @@ repos:
       - id: check-github-actions
       - id: check-github-workflows
       - id: check-gitlab-ci
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: "v3.0.0-alpha.4"
+    hooks:
+      - id: prettier
+  - repo: https://github.com/editorconfig-checker/editorconfig-checker.python
+    rev: "2.7.1"
+    hooks:
+      - id: editorconfig-checker
+        alias: ec

CONTRIBUTING.md

@@ -1,11 +1,8 @@
+# Contributing
+
 Contributions are welcomed assuming my repositories are the correct place
 for it (the target is my repository or a PR I have open to another repository).
 
-In case [editorconfig](https://editorconfig.org/) isn't
-[natively supported by your editor of choice](https://editorconfig.org/#pre-installed),
-please consider [installing a plugin](https://editorconfig.org/#download).  
-E.g. VS Cod{e,ium} users can `CTRL-P` and execute `ext install EditorConfig.EditorConfig`.
-
 Issues being assigned to me doesn't matter, I use that just as a tool for
 rediscovering them easily, http://github.com/issues?q=is:open%20assignee:Mikaela
 
@@ -13,3 +10,13 @@ I also accept PRs to repositories that are mirrors (if that is easier for you
 than opening at the original location) as patches are easy enough to export
 from GitHub or `git remote`s to use, the merge might just take a bit longer
 (including the time the mirror takes to update).
+
+## General steps
+
+1. In case [editorconfig](https://editorconfig.org/) isn't
+   [natively supported by your editor of choice](https://editorconfig.org/#pre-installed),
+   please consider [installing a plugin](https://editorconfig.org/#download).  
+   E.g. VS Cod{e,ium} users can `CTRL-P` and execute `ext install EditorConfig.EditorConfig`.
+2. If the repository in question has a `.pre-commit-config.yaml` file,
+   please install [`pre-commit`](https://pre-commit.com/) and run
+   `pre-commit install` in your local clone at least once.

FUNDING.yml

@@ -1,2 +1,6 @@
 # If no protocol is specified, http:// is assumed.
-custom: ["https://github.com/liberapay/liberapay.org/issues/30", "https://cv.aminda.eu"]
+custom:
+  [
+    "https://github.com/liberapay/liberapay.org/issues/30",
+    "https://cv.aminda.eu",
+  ]

README.md

@@ -1,3 +1,3 @@
 GitHub community health files
 
-* https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/creating-a-default-community-health-file#creating-a-repository-for-default-files
+-  https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/creating-a-default-community-health-file#creating-a-repository-for-default-files