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cmd/go: document 'go env GOMOD' outside modules

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In documentation for 'go env GOMOD', note that the path will be
os.DevNull in module-aware mode when no go.mod file is present.

Fixes #36052

Change-Id: I30ced1df02ccefe1970bd856190e79d6f0384375
Reviewed-on: https://go-review.googlesource.com/c/go/+/210577
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
Jay Conrod 2019-12-09 14:29:29 -05:00
parent 7d24e9581a
commit 3a3093d5c7
2 changed files with 8 additions and 4 deletions
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6
src/cmd/go/alldocs.go
View File

@ -1726,8 +1726,10 @@
// GOHOSTOS
// The operating system (GOOS) of the Go toolchain binaries.
// GOMOD
// The absolute path to the go.mod of the main module,
// or the empty string if not using modules.
// The absolute path to the go.mod of the main module.
// If module-aware mode is enabled, but there is no go.mod, GOMOD will be
// os.DevNull ("/dev/null" on Unix-like systems, "NUL" on Windows).
// If module-aware mode is disabled, GOMOD will be the empty string.
// GOTOOLDIR
// The directory where the go tools (compile, cover, doc, etc...) are installed.
//

6
src/cmd/go/internal/help/helpdoc.go
View File

@ -621,8 +621,10 @@ Additional information available from 'go env' but not read from the environment
GOHOSTOS
The operating system (GOOS) of the Go toolchain binaries.
GOMOD
The absolute path to the go.mod of the main module,
or the empty string if not using modules.
The absolute path to the go.mod of the main module.
If module-aware mode is enabled, but there is no go.mod, GOMOD will be
os.DevNull ("/dev/null" on Unix-like systems, "NUL" on Windows).
If module-aware mode is disabled, GOMOD will be the empty string.
GOTOOLDIR
The directory where the go tools (compile, cover, doc, etc...) are installed.
`,