ci: lint runtime with stylua

.github/workflows/ci.yml

@@ -86,6 +86,13 @@ jobs:
         name: clint-full
         run: ./ci/run_lint.sh clint-full
 
+      - if: "!cancelled()"
+        name: stylua
+        uses: JohnnyMorganz/stylua-action@1.0.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --check runtime/
+
       - if: "!cancelled()"
         name: lualint
         run: ./ci/run_lint.sh lualint

.stylua.toml

@@ -0,0 +1,6 @@
+column_width = 120
+line_endings = "Unix"
+indent_type = "Spaces"
+indent_width = 2
+quote_style = "AutoPreferSingle"
+call_parentheses = "Always"

.styluaignore

@@ -0,0 +1,3 @@
+/scripts
+/src
+/test

Makefile

@@ -146,9 +146,16 @@ functionaltest: | nvim
 functionaltest-lua: | nvim
 	+$(BUILD_TOOL) -C build functionaltest-lua
 
+stylua:
+	stylua --check runtime/
+
 lualint: | build/.ran-cmake deps
 	$(BUILD_TOOL) -C build lualint
 
+_opt_stylua:
+	@command -v stylua && { $(MAKE) stylua; exit $$?; } \
+		|| echo "SKIP: stylua (stylua not found)"
+
 shlint:
 	@shellcheck --version | head -n 2
 	shellcheck scripts/vim-patch.sh
@@ -214,7 +221,7 @@ appimage:
 appimage-%:
 	bash scripts/genappimage.sh $*
 
-lint: check-single-includes clint lualint _opt_pylint _opt_shlint _opt_commitlint
+lint: check-single-includes clint _opt_stylua lualint _opt_pylint _opt_shlint _opt_commitlint
 
 # Generic pattern rules, allowing for `make build/bin/nvim` etc.
 # Does not work with "Unix Makefiles".
@@ -226,4 +233,4 @@ $(DEPS_BUILD_DIR)/%: phony_force
 	$(BUILD_TOOL) -C $(DEPS_BUILD_DIR) $(patsubst $(DEPS_BUILD_DIR)/%,%,$@)
 endif
 
-.PHONY: test lualint pylint shlint functionaltest unittest lint clint clean distclean nvim libnvim cmake deps install appimage checkprefix commitlint
+.PHONY: test stylua lualint pylint shlint functionaltest unittest lint clint clean distclean nvim libnvim cmake deps install appimage checkprefix commitlint