tree 3b9a681cd6bc0cb345e47195d745ce7440096fac
parent 01837ca7eb7d83dcbf760c032e1b25320f200510
author Carlo Alberto Ferraris <cafxx@strayorange.com> 1642742498 +0900
committer Gopher Robot <gobot@golang.org> 1650584463 +0000

bufio: implement large write forwarding in Writer.WriteString

Currently bufio.Writer implements forwarding to the underlying Writer
for large writes via Write, but it does not do the same for large
writes via WriteString.

If the underlying Writer is also a StringWriter, use the same "large
writes" logic also in WriteString while taking care to only check
once per call to WriteString whether the underlying Writer implements
StringWriter.

Change-Id: Id81901c07b035936816b9e41b1f5688e699ee8e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/380074
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>