tree c00948b6d18b0e97c6158a6c8653443b89d07223
parent e7821682ea0105c74f00986131cf59b07d4966cc
author rsc <devnull@localhost> 1095975621 +0000
committer rsc <devnull@localhost> 1095975621 +0000
golang-hg 7b36159610c67ed58d6731555e06327f2472b338

add this.