tree a8f1c0d2c45aa4bf71b3f487cea5f73231f45e57
parent 6cc2880d07d65fc535a1fb4fbd58b397bc1c5312
author Jay Conrod <jayconrod@google.com> 1579807886 -0800
committer Jay Conrod <jayconrod@google.com> 1582924421 +0000

cmd/gorelease: infer base version if unspecified

If the -base flag is not set on the command line, it is now inferred
from the -version flag and available versions. If the -version flag is
given, the base version will be the highest available release version
lower than -version. Otherwise, the base version will be the highest
release version. Pre-release versions are not considered.

If there are no appropriate versions, and the release version is
unspecified or appears to be the first release (e.g., v0.1.0, v2.0.0),
the inferred base version will be "none" (meaning no comparison will
be made). Otherwise, an error will be shown.

Updates golang/go#26420

Change-Id: Iee45a4183f3e4a219c02a69b5d16a3cc5478644c
Reviewed-on: https://go-review.googlesource.com/c/exp/+/216078
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>