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cmd/go: check subcommand properties

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This change corrects the properties checked by Lookup.  We were
inspecting the properties of the Command receiver; now we are
inspecting the properties of the subcommand.

Fixes #73864.

Change-Id: Ieb462e489fc4f8f0568aa3a2d404b322d627166c
Reviewed-on: https://go-review.googlesource.com/c/go/+/678655
Reviewed-by: Michael Matloob <matloob@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Matloob <matloob@google.com>
This commit is contained in:
Ian Alexander 2025-05-30 17:59:34 -04:00
parent 2363897932
commit e5502e0959
1 changed files with 2 additions and 2 deletions
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4
src/cmd/go/internal/base/base.go
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@ -62,11 +62,11 @@ var Go = &Command{
// Lookup returns the subcommand with the given name, if any.
// Otherwise it returns nil.
//
// Lookup ignores subcommands that have len(c.Commands) == 0 and c.Run == nil.
// Lookup ignores any subcommand `sub` that has len(sub.Commands) == 0 and sub.Run == nil.
// Such subcommands are only for use as arguments to "help".
func (c *Command) Lookup(name string) *Command {
for _, sub := range c.Commands {
if sub.Name() == name && (len(c.Commands) > 0 || c.Runnable()) {
if sub.Name() == name && (len(sub.Commands) > 0 || sub.Runnable()) {
return sub
}
}