Hello r (cc: golang-dev@googlegroups.com), I'd like you to review this change to https://go.googlecode.com/hg
LGTM
*** Submitted as http://code.google.com/p/go/source/detail?r=5d3aaf0b717e *** io: amend ReaderFrom doc as per r's comment R=r CC=golang-dev http://codereview.appspot.com/6458097