bufio: make the description of Peek's behavior better
Previously, based on the description, it was not obvious that Peek could
change the buffer. It may have been mistakenly assumed that Peek would
always return an error if n is greater than b.Buffered().
Change-Id: I095006dd2ba1c2138bb193396cb24e2dda42d771
GitHub-Last-Rev:
9d48f8ac81f46d5b8f4a1885af28cbccd1747c3b
GitHub-Pull-Request: golang/go#70712
Reviewed-on: https://go-review.googlesource.com/c/go/+/634175
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>