1 files changed, 5 insertions, 0 deletions
diff --git a/tool/lib/vpath.rb b/tool/lib/vpath.rb
index a52f840c30..fa819f3242 100644
--- a/tool/lib/vpath.rb
+++ b/tool/lib/vpath.rb
@@ -53,6 +53,7 @@ class VPath
   end
 
   def def_options(opt)
+    opt.separator("  VPath common options:")
     opt.on("-I", "--srcdir=DIR", "add a directory to search path") {|dir|
       @additional << dir
     }
@@ -80,6 +81,10 @@ class VPath
     @list
   end
 
+  def add(path)
+    @additional << path
+  end
+
   def strip(path)
     prefix = list.map {|dir| Regexp.quote(dir)}
     path.sub(/\A#{prefix.join('|')}(?:\/|\z)/, '')