tree 481231e16d32e60c0baa1b17aa39a0a7459637f6
parent 94c68ad279b3c55957e57efe805c47533e51e9f1
author Russ Cox <rsc@golang.org> 1530821118 -0400
committer Russ Cox <rsc@golang.org> 1531416458 +0000

cmd/go/internal/modfile: allow replace without old version

Replace directives to date have looked like

	replace old v1.2.3 => new v1.4.5

As pointed out in golang/go#24825, this can result in fragile go.mod
where the replacement stops kicking in after an upgrade that
affects the selected old version.

The fact that the replacement specifies exactly which version
it is capable of replacing might be a feature, but in other contexts
it's just a hassle. Allow not specifying the version, in which case
the replacement applies to all versions of that module.

Fixes golang/go#24825.

Change-Id: Iad97dde25c06fcba3c1181d650f9fa5e95f83157
Reviewed-on: https://go-review.googlesource.com/122400
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>