Revert "Prevent copying a directory into itself. Links to #4"

This reverts commit 73eca73.

lib/ncp.js

@@ -30,24 +30,12 @@ function ncp (source, dest, options, callback) {
       started = 0,
       finished = 0,
       running = 0,
-      limit = options.limit || ncp.limit || 16,
-      selfCopyError = new Error('can\'t copy `' + targetPath + '` into `' + currentPath + '` itself');
-
-  selfCopyError.code = 'ESELF';
-
-  limit = (limit < 1) ? 1 : (limit > 512) ? 512 : limit;
+      limit = options.limit || ncp.limit || 16;
 
-  function startsWith(target, source) {
-    target = target === null ? '' : String(target);
-    return target.lastIndexOf(source, 0) === 0;
-  }
-
-  if (startsWith(targetPath, currentPath)) {
-    return cback(selfCopyError);
-  }
+  limit = (limit < 1) ? 1 : (limit > 512) ? 512 : limit;
 
   startCopy(currentPath);
-
+  
   function startCopy(source) {
     started++;
     if (filter) {

test/ncp.js

@@ -170,47 +170,28 @@ describe('ncp', function () {
   });
 
   describe('modified files copies', function () {
-    var fixtures = path.join(__dirname, 'modified-files'),
-        src = path.join(fixtures, 'src'),
-        out = path.join(fixtures, 'out');
-
-    it('if file not exists copy file to target', function(cb) {
-      rimraf(out, function() {
-        ncp(src, out, {modified: true, clobber: false}, function (err) {
-          assert.equal(fs.existsSync(out), true);
-          cb();
-        });
-      });
-    });
-
-    it('change source file mtime and copy', function(cb) {
-      fs.utimesSync(src+"/a", new Date().getTime()/1000, new Date('2015-01-01 00:00:00').getTime()/1000);
-      ncp(src, out, {modified: true, clobber: false}, function (err) {
-        fs.stat(out+"/a", function(err, stats) {
-          assert.equal(stats.mtime.getTime(), new Date('2015-01-01 00:00:00').getTime());
-          cb();
-        });
+      var fixtures = path.join(__dirname, 'modified-files'),
+          src = path.join(fixtures, 'src'),
+          out = path.join(fixtures, 'out');
+
+      it('if file not exists copy file to target', function(cb) {
+          rimraf(out, function() {
+              ncp(src, out, {modified: true, clobber: false}, function (err) {
+                  assert.equal(fs.existsSync(out), true);
+                  cb();
+              });
+          });
       });
-    });
-  });
-
-  describe('sub directory handling', function () {
-    var fixtures = path.join(__dirname, 'sub-directory-fixtures'),
-        src = path.join(fixtures, 'src'),
-        out = path.join(fixtures, 'src/out');
 
-    beforeEach(function (cb) {
-      rimraf(out, function(){
-        fs.mkdir(out,cb);
+      it('change source file mtime and copy', function(cb) {
+          fs.utimesSync(src+"/a", new Date().getTime()/1000, new Date('2015-01-01 00:00:00').getTime()/1000);
+          ncp(src, out, {modified: true, clobber: false}, function (err) {
+              fs.stat(out+"/a", function(err, stats) {
+                  assert.equal(stats.mtime.getTime(), new Date('2015-01-01 00:00:00').getTime());
+                  cb();
+              });
+          });
       });
-    });
-
-    it('returns an error when user copy the parent to itself', function (cb) {
-      ncp(src, out, function (err) {
-        assert.equal(err.code, 'ESELF');
-        cb();
-      })
-    });
 
   });
-});
+});