Add pre-commit hook for linting

Author: hakimifr

Makefile

@@ -5,4 +5,8 @@ LINT_FILES := setup \
 lint:
 	shfmt -i 4 -w $(LINT_FILES)
 
+install-hook:
+	cp -f pre-commit .git/hooks/pre-commit
+	chmod +x .git/hooks/pre-commit
+
 default: lint

README.md

@@ -11,6 +11,14 @@ If you want to contribute, please make sure you have `shfmt` installed, and run
 `make lint` before commiting. This ensures tabs and spaces does not get mixed,
 as well as consistent styling.
 
+Alternatively, you can use our provided hook to run `make lint` automatically
+before git commits your changes.
+
+To install the hook:
+```bash
+make install-hook
+```
+
 ```bash
 # For example, shfmt will ensure:
 if condition

pre-commit

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+echo "Running make lint"
+make lint
+exit $?