diff --git a/README.md b/README.md
index eadaf87..75f32df 100644
--- a/README.md
+++ b/README.md
@@ -324,7 +324,8 @@ jobs:
     runs-on: ubuntu-latest
     # Required permissions
     permissions:
-      pull-requests: read
+      contents: read      # required by actions/checkout
+      pull-requests: read # required by dorny/paths-filter
     steps:
     - uses: actions/checkout@v4
     - uses: dorny/paths-filter@v3
diff --git a/__tests__/outputs.test.ts b/__tests__/outputs.test.ts
new file mode 100644
index 0000000..cd8269d
--- /dev/null
+++ b/__tests__/outputs.test.ts
@@ -0,0 +1,46 @@
+import {ChangeStatus} from '../src/file'
+import {exportResults} from '../src/main'
+import * as core from '@actions/core'
+
+jest.mock('@actions/core', () => ({
+  setOutput: jest.fn(),
+  startGroup: jest.fn(),
+  endGroup: jest.fn(),
+  info: jest.fn()
+}))
+
+describe('all_changed and any_changed outputs', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  test('reports true when all filters changed', () => {
+    const results = {
+      src: [{filename: 'src/file.ts', status: ChangeStatus.Modified}],
+      docs: [{filename: 'docs/readme.md', status: ChangeStatus.Added}]
+    }
+    exportResults(results, 'none')
+    expect(core.setOutput).toHaveBeenCalledWith('all_changed', true)
+    expect(core.setOutput).toHaveBeenCalledWith('any_changed', true)
+  })
+
+  test('reports false for all_changed when some filters unchanged', () => {
+    const results = {
+      src: [{filename: 'src/file.ts', status: ChangeStatus.Modified}],
+      docs: []
+    }
+    exportResults(results, 'none')
+    expect(core.setOutput).toHaveBeenCalledWith('all_changed', false)
+    expect(core.setOutput).toHaveBeenCalledWith('any_changed', true)
+  })
+
+  test('reports false for any_changed when no filter changed', () => {
+    const results = {
+      src: [],
+      docs: []
+    }
+    exportResults(results, 'none')
+    expect(core.setOutput).toHaveBeenCalledWith('all_changed', true)
+    expect(core.setOutput).toHaveBeenCalledWith('any_changed', false)
+  })
+})
diff --git a/action.yml b/action.yml
index 8513f57..14ba243 100644
--- a/action.yml
+++ b/action.yml
@@ -47,9 +47,19 @@ inputs:
   predicate-quantifier:
     description: |
       Optional parameter to override the default behavior of file matching algorithm.
-      By default, files that match at least one pattern defined by the filters will be included.
-      This parameter allows overriding the "at least one" behavior so that all patterns must match.
-      Supported values are 'some' and 'every'.
+      By default files that match at least one pattern defined by the filters will be included.
+      This parameter allows to override the "at least one pattern" behavior to make it so that
+      all of the patterns have to match or otherwise the file is excluded.
+      An example scenario where this is useful if you would like to match all
+      .ts files in a sub-directory but not .md files.
+      The filters below will match markdown files despite the exclusion syntax UNLESS
+      you specify 'every' as the predicate-quantifier parameter. When you do that,
+      it will only match the .ts files in the subdirectory as expected.
+
+      backend:
+       - 'pkg/a/b/c/**'
+       - '!**/*.jpeg'
+       - '!**/*.md'
     required: false
     default: 'some'
 outputs:
diff --git a/dist/index.js b/dist/index.js
index b136b8c..d39ee04 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -564,6 +564,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.run = exports.exportResults = void 0;
 const fs = __importStar(__nccwpck_require__(7147));
 const core = __importStar(__nccwpck_require__(2186));
 const github = __importStar(__nccwpck_require__(5438));
@@ -606,6 +607,7 @@ async function run() {
         core.setFailed(getErrorMessage(error));
     }
 }
+exports.run = run;
 function isPathInput(text) {
     return !(text.includes('\n') || text.includes(':'));
 }
@@ -793,6 +795,7 @@ function exportResults(results, format) {
         core.info('Cannot set changes output variable - name already used by filter output');
     }
 }
+exports.exportResults = exportResults;
 function serializeExport(files, format) {
     const fileNames = files.map(file => file.filename);
     switch (format) {
@@ -816,7 +819,9 @@ function getErrorMessage(error) {
         return error.message;
     return String(error);
 }
-run();
+if (require.main === require.cache[eval('__filename')]) {
+    run();
+}
 
 
 /***/ }),
diff --git a/src/main.ts b/src/main.ts
index f620560..1288206 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -228,7 +228,7 @@ async function getChangedFilesFromApi(token: string, pullRequest: PullRequestEve
   }
 }
 
-function exportResults(results: FilterResults, format: ExportFormat): void {
+export function exportResults(results: FilterResults, format: ExportFormat): void {
   core.info('Results:')
   const changes: string[] = []
   let anyChanged = false
@@ -295,4 +295,8 @@ function getErrorMessage(error: unknown): string {
   return String(error)
 }
 
-run()
+if (require.main === module) {
+  run()
+}
+
+export {run}