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Add README section for RemoveCommand

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Étienne Vallette d'Osia 2015-03-13 12:40:00 +09:00
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README.md
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@ -143,6 +143,15 @@ A flag can also be assigned locally which will only apply to that specific comma
HugoCmd.Flags().StringVarP(&Source, "source", "s", "", "Source directory to read from")
### Remove a command from its parent
Removing a command is not a common action is simple program but it allows 3rd parties to customize an existing command tree.
In this exemple, we remove the existing `VersionCmd` command of an existing root command, and we replace it by our own version.
mainlib.RootCmd.RemoveCommand(mainlib.VersionCmd)
mainlib.RootCmd.AddCommand(versionCmd)
### Once all commands and flags are defined, Execute the commands
Execute should be run on the root for clarity, though it can be called on any command.