Replace deprecated add-path GitHub Actions command

See: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/

Author: axelf4

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - vim-url: https://github.com/vim/vim-appimage/releases/download/v8.2.2282/GVim-v8.2.2282.glibc2.15-x86_64.AppImage
+            vim-flags: --not-a-term
+          - vim-url: https://github.com/neovim/neovim/releases/download/nightly/nvim.appimage
+            vim-flags: --headless
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Vim
+      run: |
+        curl -L --output vim ${{ matrix.vim-url }}
+        chmod +x vim
+    - name: Run tests
+      run: make test VIM=./vim VIMFLAGS=${{ matrix.vim-flags }}

.github/workflows/test.yml

@@ -1,14 +1,14 @@
-VIM = vim
+VIM := vim
+unexport VIM
+VIMFLAGS := $(if $(filter nvim,$(VIM)),--headless,--not-a-term)
 
-ifeq ($(VIM),vim)
-	args = --not-a-term
-else ifeq ($(VIM),nvim)
-	args = --headless
-endif
+all: test
 
-all: check
+TESTS := $(wildcard test/test*.vim)
 
-check:
-	$(foreach test,$(wildcard test/*.vim),$(VIM) --clean $(args) -u runtest.vim "$(test)")
+$(TESTS):
+	$(VIM) --clean $(VIMFLAGS) -u runtest.vim "$@"
 
-.PHONY: all check
+test: $(TESTS)
+
+.PHONY: all test $(TESTS)

Makefile

@@ -1,5 +1,5 @@
 # vim-strip-trailing-whitespace
-![](https://github.com/axelf4/vim-strip-trailing-whitespace/workflows/CI/badge.svg)
+![](https://github.com/axelf4/vim-strip-trailing-whitespace/workflows/test/badge.svg)
 
 Vim plugin that removes trailing whitespace
  * **from modified lines:** Should not introduce extraneous changes into the diff, even when editing faulty files.

README.md

@@ -6,23 +6,24 @@ try
 	source plugin/strip_trailing_whitespace.vim
 
 	source %
-	let s:tests = map(split(execute('function /^Test_'), "\n"), {_, v -> matchstr(v, 'function \zs\k\+\ze()')})
+	" Query list of functions matching ^Test_
+	let s:tests = map(split(execute('function /^Test_'), "\n"), 'matchstr(v:val, ''^function \zs\k\+\ze()'')')
+
 	for s:test_function in s:tests
 		let v:errors = []
 		echo 'Test' s:test_function
 		try
 			execute 'call' s:test_function '()'
 		catch
 			call add(v:errors, "Uncaught exception in test: " .. v:exception .. " at " .. v:throwpoint)
-		finally
-			if !empty(v:errors)
-				echo s:testfile .. ':1:Error'
-				for s:error in v:errors
-					echo s:error
-				endfor
-				let s:has_errors = 1
-			endif
 		endtry
+		if !empty(v:errors)
+			echo s:testfile .. ':1:Error'
+			for s:error in v:errors
+				echo s:error
+			endfor
+			let s:has_errors = 1
+		endif
 	endfor
 catch
 	echo v:exception