diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 000000000..9dba9dfba
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,32 @@
+# Auto detect text files and enforce LF line endings
+* text=auto eol=lf
+
+# Source code
+*.js text eol=lf
+*.mjs text eol=lf
+*.ts text eol=lf
+*.json text eol=lf
+*.html text eol=lf
+*.css text eol=lf
+
+# Documentation
+*.md text eol=lf
+
+# Config files
+*.yml text eol=lf
+*.yaml text eol=lf
+*.config text eol=lf
+*.lock text eol=lf
+.gitattributes text eol=lf
+.gitignore text eol=lf
+.editorconfig text eol=lf
+.ncurc text eol=lf
+.mailmap text eol=lf
+
+# Graphics
+*.svg text eol=lf
+*.woff binary
+*.woff2 binary
+*.ttf binary
+*.eot binary
+*.ico binary
diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index 046bdbd49..0e711b736 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -4,7 +4,12 @@ on: pull_request
 
 jobs:
   verify:
-    runs-on: ubuntu-latest
+    name: Verify (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, ubuntu-latest, macos-latest]
     steps:
       - name: Clone Repository
         uses: actions/checkout@v5
diff --git a/src/vscode-tree-item/vscode-tree-item.ts b/src/vscode-tree-item/vscode-tree-item.ts
index e39c96123..e92937095 100644
--- a/src/vscode-tree-item/vscode-tree-item.ts
+++ b/src/vscode-tree-item/vscode-tree-item.ts
@@ -323,7 +323,7 @@ export class VscodeTreeItem extends VscElement {
   private _handleContentClick(ev: MouseEvent) {
     ev.stopPropagation();
 
-    const isCtrlDown = ev.ctrlKey;
+    const isCtrlDown = ev.ctrlKey || ev.metaKey;
     const isShiftDown = ev.shiftKey;
 
     if (isShiftDown && this._configContext.multiSelect) {
@@ -356,7 +356,10 @@ export class VscodeTreeItem extends VscElement {
 
   private _handleDoubleClick(ev: MouseEvent) {
     if (this._configContext.expandMode === ExpandMode.doubleClick) {
-      if (this.branch && !(this._configContext.multiSelect && ev.ctrlKey)) {
+      if (
+        this.branch &&
+        !(this._configContext.multiSelect && (ev.ctrlKey || ev.metaKey))
+      ) {
         this.open = !this.open;
       }
     }
diff --git a/src/vscode-tree/vscode-tree.test.ts b/src/vscode-tree/vscode-tree.test.ts
index 16fe0eba2..25b8abdb2 100644
--- a/src/vscode-tree/vscode-tree.test.ts
+++ b/src/vscode-tree/vscode-tree.test.ts
@@ -623,11 +623,13 @@ describe('vscode-tree', () => {
       </vscode-tree>`
     );
 
+    const isMac = window.navigator.userAgent.includes('Mac');
+    const downKey = isMac ? 'Meta' : 'Control';
     await clickOnElement($('#item1'));
-    await sendKeys({down: 'Control'});
+    await sendKeys({down: downKey});
     await clickOnElement($('#item3'));
     await clickOnElement($('#item5'));
-    await sendKeys({up: 'Control'});
+    await sendKeys({up: downKey});
 
     expect($<VscodeTreeItem>('#item1').selected).to.be.true;
     expect($<VscodeTreeItem>('#item2').selected).to.be.false;