My urfave/cli version is

github.com/urfave/cli/v2 v2.23.6

Checklist

• Are you running the latest v2 release? The list of releases is here.
• Did you check the manual for your release? The v2 manual is here
• Did you perform a search about this problem? Here's the GitHub guide about searching.

Dependency Management

• My project is using go modules.

Describe the bug

Bash completion (arg --generate-bash-completion and option EnableBashCompletion) does not provide completion for subcommands of subcommands.

To reproduce

https://go.dev/play/p/aO7adBNLVCf

Observed behavior

It returns commands below alpha.

$ ./app alpha beta --generate-bash-completion
beta
help
h

Expected behavior

It should returns commands below beta (ie. gamma)

$ ./app alpha beta --generate-bash-completion
gamma
help
h

Run go version and paste its output here

$ go version
go version go1.18.8 darwin/amd64