tree f7ecf82c246fc5b2075c8ecf4e9b276ea4be1f74
parent 4826e083099e5ac695f40e169cc724c265221879
author Jonathan Amsterdam <jba@google.com> 1548420485 -0500
committer Jonathan Amsterdam <jba@google.com> 1548428836 +0000

error-values: clarify how to use the adapter

Make it clear that one's error type must provide Error and FormatError
methods in addition to Format.

Change-Id: Ic21c3a212b9fa4eb8efddac49bff10d0515fa641
Reviewed-on: https://go-review.googlesource.com/c/159499
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>