NoOptDefVal doesn't work with shorthand

[rmasci]

var flagSet flag.FlagSet

flagSet.StringVarP(&creds, "user", "u", "", "Login Credentials: ")
flagSet.StringVarP(&passwd, "password", "p", "", "Password for User.")
flagSet.StringVarP(&lastname, "lastName", "f", "", "First Name"
flagSet.StringVarP(&lastname, "lastName", "l", "", "Last Name"
flagSet.Lookup("silent").NoOptDefVal = "Fred Flintstone"
...
When I run the program:
myProgram --firstName=Barney --lastName=Rubble -u brubble -p b3dr0ck,
it works.
When I run the program:
myProgram -f Barney -lastName Rubble -u brubble -p b3dr0ck,
This breaks things. All options past the -f will not be accepted and a value will not get assigned to firstName or lastName variable.s

[n10v]

Yes, it's normal and it's documented:

--flag x // only on flags without a default value

Duplicate of #134.