Adding a BoolVarP with shorthand code of "h" to any flagset generates a misleading panic message:

panic: unable to redefine 'h' shorthand in "mapgen" flagset: it's already used for "flag" flag

The error makes it seem like the issue is with the "mapgen" flagset (in this example) when it's actually from the default help flagset.

To recreate, add a BoolVarP to the root command and then run the command with no arguments.

var flag bool
func init() {
	rootCmd.Flags().BoolVarP(&flag, "flag", "h", false, "flag")
}

This is with v1.0.5.