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Rens Rikkerink 3e2ceaf4de cmd/go: mod init outside of GOPATH silently fails
Running `go mod init` outside of GOPATH with `GO111MODULE=off`
silently fails. This behavior was undocumented.

This CL makes go mod fail with the error:

   go: modules disabled by GO111MODULE=off; see 'go help modules'
Comparing with already erroring GO111MODULE=<value> conditions:

* With GO111MODULE=auto, inside GOPATH:
    go modules disabled inside GOPATH/src by GO111MODULE=auto; see 'go help modules'
* With GO111MODULE=auto outside of GOPATH:
    go: cannot determine module path for source directory /path/to/dir (outside GOPATH, no import comments)

Fixes #31342

Change-Id: I749787d2a8640913c4ac263072d051314d76e778
GitHub-Last-Rev: b38447457d
GitHub-Pull-Request: golang/go#31255
Reviewed-on: https://go-review.googlesource.com/c/go/+/170697
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-04-18 17:23:47 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api text/scanner: don't liberally consume (invalid) floats or underbars 2019-02-20 20:23:28 +00:00
doc doc: fix typo in go1.12 release notes 2019-04-16 14:47:58 +00:00
lib/time time: read 64-bit data if available 2019-02-26 23:10:35 +00:00
misc misc/cgo/testcshared: support testing on self-hosted android 2019-04-16 15:10:00 +00:00
src cmd/go: mod init outside of GOPATH silently fails 2019-04-18 17:23:47 +00:00
test test: fix escape_runtime_atomic.go 2019-04-17 22:55:26 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: change email address for Elias Naur 2019-01-23 15:05:26 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS CONTRIBUTORS: second round of updates for Go 1.12 2019-01-30 18:01:19 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

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