Merge remote-tracking branch 'origin/v1' into merging-from-v1

runtests

@@ -38,7 +38,7 @@ def _target(func):
 @_target
 def _test():
     if check_output('go version'.split()).split()[2] < 'go1.2':
-        _run('go test -v .'.split())
+        _run('go test -v .')
         return
 
     coverprofiles = []
@@ -55,7 +55,7 @@ def _test():
         ])
 
     combined_name = _combine_coverprofiles(coverprofiles)
-    _run('go tool cover -func={}'.format(combined_name).split())
+    _run('go tool cover -func={}'.format(combined_name))
     os.remove(combined_name)
 
 
@@ -66,7 +66,7 @@ def _gfmxr():
 
 @_target
 def _vet():
-    _run('go vet ./...'.split())
+    _run('go vet ./...')
 
 
 @_target
@@ -101,10 +101,23 @@ def _toc():
         os.path.join('node_modules', '.bin', 'markdown-toc'),
         '-i', 'README.md'
     ])
-    _run(['git', 'diff', '--quiet'])
+    _run('git diff --exit-code')
+
+
+@_target
+def _gen():
+    go_version = check_output('go version'.split()).split()[2]
+    if go_version < 'go1.4':
+        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
+        return
+
+    _run('go generate ./...')
+    _run('git diff --exit-code')
 
 
 def _run(command):
+    if hasattr(command, 'split'):
+        command = command.split()
     print('runtests: {}'.format(' '.join(command)), file=sys.stderr)
     sys.stderr.flush()
     check_call(command)