program string argument without the value doesn't appear to work

[syacko]

Based on the document, I should be able to have argument defined with a default. If no value is provided the default should be applied. Example: ./command -g all should work just like ./command -g when -g has a default of all. My code:

var genDoc string = "ALL"

func init() {
    flaggy.SetName("sdocs - Sote Docs")
    flaggy.SetDescription("sdocs will output markdown syntax for packages contenting publishable content")

    // You can disable various things by changing bools on the default parser
    // (or your own parser if you have created one).
    flaggy.DefaultParser.ShowHelpOnUnexpected = false

    // You can set a help prepend or append on the default parser.
    flaggy.DefaultParser.AdditionalHelpPrepend = "http://gitlab.com/getsote/utils"

    // Add a flag to the main program (this will be available in all subcommands as well).
    flaggy.Bool(&listVar, "l", "list", "This list the packages that are supported by this utility")
    flaggy.String(&genDoc, "g", "gen", "-g <package name> Generate docs from support packages")

    // Set the version and parse all inputs into variables.
    flaggy.SetVersion(version)
    flaggy.Parse()
}

When I run with ./sdoc -g, I get the following:

/Users/syacko/workspace/sotesoft/src/utils/sdocs/sdocs -g #gosetup
sdocs - Sote Docs - sdocs will output markdown syntax for packages contenting publishable content
http://gitlab.com/getsote/utils

  Flags: 
       --version   Displays the program version string.
    -h --help      Displays help with available flag, subcommand, and positional value parameters.
    -l --list      This list the packages that are supported by this utility
    -g --gen       -g <package name> Generate docs from support packages

Expected a following arg for flag g, but it did not exist.

Process finished with exit code 2

When I run /sdoc -g ALL, I get the following:

/Users/syacko/workspace/sotesoft/src/utils/sdocs/sdocs -g ALL #gosetup
You selected All

Process finished with exit code 0

[integrii]

Hey Scott. If you don't pass any flag, flaggy should leave the value alone. It's only when you specify the flag but don't provide a matching value for it that flaggy shows help (as in your example).

Using no flag will cause the flag's variable to not be modified. Passing a flag without a value after it will cause an error and show help (unless it was a boolean flag). Passing a flag and value after it overwrites the default value on the flag's variable with whatever was specified.

Does that make sense?

[syacko]

Ok, that makes sense. To recap, if there is no flag then the default is used. Otherwise, the existence of the flag means that a value must be provided.