bin/braid in braid-1.0.17 vs bin/braid in braid-1.0.18

@@ -38,15 +38,15 @@
     examples <<-TXT
       . braid add http://remote/path.git local/dir
       . braid add http://remote/path local/dir
     TXT
 
-    mixin :argument_url, :optional_local_path, :option_branch, :option_revision, :option_verbose, :option_path
+    mixin :argument_url, :optional_local_path, :option_branch, :option_tag, :option_revision, :option_verbose, :option_path
 
     run {
       Braid.verbose = verbose
-      Braid::Command.run(:add, url, {'path' => local_path, 'branch' => branch, 'revision' => revision, 'remote_path' => path})
+      Braid::Command.run(:add, url, {'path' => local_path, 'branch' => branch, 'tag' => tag, 'revision' => revision, 'remote_path' => path})
     }
   }
 
   mode(:update) {
     description <<-TXT
@@ -63,14 +63,16 @@
     examples <<-TXT
       . braid update
       . braid update local/dir
     TXT
 
-    mixin :optional_local_path, :option_revision, :option_head, :option_verbose, :option_keep_remote
+    mixin :optional_local_path, :option_head, :option_revision, :option_tag, :option_branch, :option_verbose, :option_keep_remote
 
     run {
       options = {
+        'branch' => branch,
+        'tag' => tag,
         'revision' => revision,
         'head' => head,
         'keep' => keep
       }
       Braid.verbose = verbose
@@ -189,15 +191,24 @@
 
   mixin(:option_branch) {
     option(:branch, :b) {
       optional
       argument :required
-      desc 'remote branch name'
+      desc 'remote branch name to track'
       attr
     }
   }
 
+  mixin(:option_tag) {
+    option(:tag, :t) {
+      optional
+      argument :required
+      desc 'remote tag name to track'
+      attr
+    }
+  }
+
   mixin(:option_path) {
     option(:path, :p) {
       optional
       argument :required
       desc 'remote path'
@@ -215,10 +226,10 @@
   }
 
   mixin(:option_head) {
     option(:head) {
       optional
-      desc 'mirror head'
+      desc 'unused option'
       attr
     }
   }
 
   mixin(:option_verbose) {