Bugfix: for [nyc issue 784](istanbuljs/nyc#784). Tested on windows 10…

… in powershell and cmd.

lib/mungers/cmd.js

@@ -43,7 +43,7 @@ function mungeCmd(workingDir, options) {
 
     let npmPath = whichOrUndefined('npm') || 'npm'
     npmPath = path.dirname(npmPath) + '\\node_modules\\npm\\bin\\npm-cli.js'
-    replace = m[1] + workingDir + '/node.cmd' +
+    replace = m[1] + '"' + workingDir + '/node.cmd"' +
       ' "' + npmPath + '"' +
       m[3] + m[4]
     options.args[cmdi + 1] = command.replace(npmre, replace)

test/basic.js

@@ -193,7 +193,7 @@ t.test('spawn node', function (t) {
 })
 
 t.test('exec execPath', function (t) {
-  t.plan(4)
+  t.plan(5)
 
   t.test('basic', function (t) {
     var opt = IS_WINDOWS ? null : { shell: '/bin/bash' }
@@ -228,6 +228,31 @@ t.test('exec execPath', function (t) {
     })
   })
 
+  t.test('spaces in path on windows', { skip: !IS_WINDOWS }, function(t) {
+
+    //create temp folder with spaces in path
+    var dir = path.join(__dirname, 'fixtures', 'space path');
+    fs.mkdirSync(dir);
+    var fp = path.join(__dirname, 'fixtures', 'space path', 'node.exe');
+    fs.writeFileSync(fp, fs.readFileSync(process.execPath));
+    fs.chmodSync(fp, '0775');
+
+    var child = cp.exec(JSON.stringify(fp) + ' ' + fixture + ' xyz', null);
+    var out = ''
+    child.stdout.on('data', function (c) {
+      out += c
+    });
+
+    child.on('close', function (code, signal) {
+      t.equal(code, 0)
+      t.equal(signal, null)
+      t.equal(out, expect)
+      fs.unlinkSync(fp);
+      fs.rmdirSync(dir);
+      t.end();
+    });
+  });
+
   t.test('SIGINT', { skip: winNoSig }, function (t) {
     var child = cp.exec(process.execPath + ' ' + fixture + ' xyz', { shell: '/bin/bash' })