tree bef74199bc3f9ee1b57bfd66d593387e7e96b320
parent 174b9ecfe387987a5cd977c4d9237bbb650420ed
author Joe Tsai <joetsai@digital-static.net> 1615923841 -0700
committer Joe Tsai <joetsai@digital-static.net> 1615926252 +0000

cmd/protoc-gen-go: support --help flag

When someone has no idea what a binary does, it is convention to
pass the "--help" flag. When done, we should point the user
to the devsite documentation on protoc with protoc-gen-go.

Change-Id: I36289a1ae025b9e12521b34362370aba5235a44b
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/302330
Trust: Joe Tsai <joetsai@digital-static.net>
Reviewed-by: Damien Neil <dneil@google.com>