cmd/go: report an error for 'go list -m ...' outside a module

Previously, we just reported an error for "all". Now we report an
error for any pattern that matches modules in the build list. The
build list can only contain the module "command-line-arguments", so
these patterns are not meaningful.

Fixes #35728

Change-Id: Ibc736491ec9164588f9657c09d1b9683b33cf1de
Reviewed-on: https://go-review.googlesource.com/c/go/+/208222
Run-TryBot: Jay Conrod <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Bryan C. Mills <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>

Author: Jay Conrod

src/cmd/go/internal/modload/list.go

@@ -57,8 +57,8 @@ func listModules(args []string, listVersions bool) []*modinfo.ModulePublic {
 		if search.IsRelativePath(arg) {
 			base.Fatalf("go: cannot use relative path %s to specify module", arg)
 		}
-		if !HasModRoot() && arg == "all" {
-			base.Fatalf(`go: cannot match "all": working directory is not part of a module`)
+		if !HasModRoot() && (arg == "all" || strings.Contains(arg, "...")) {
+			base.Fatalf("go: cannot match %q: working directory is not part of a module", arg)
 		}
 		if i := strings.Index(arg, "@"); i >= 0 {
 			path := arg[:i]

src/cmd/go/testdata/script/mod_outside.txt

@@ -56,6 +56,13 @@ stderr 'go: cannot match "all": working directory is not part of a module'
 stderr 'go: cannot match "all": working directory is not part of a module'
 ! stdout 'example.com/version'
 
+# 'go list -m' with wildcards should fail. Wildcards match modules in the
+# build list, so they aren't meaningful outside a module.
+! go list -m ...
+stderr 'go: cannot match "...": working directory is not part of a module'
+! go list -m rsc.io/quote/...
+stderr 'go: cannot match "rsc.io/quote/...": working directory is not part of a module'
+
 
 # 'go clean' should skip the current directory if it isn't in a module.
 go clean -n