Option/Argument.GetRequiredValue throws when DefaultValueFactory is set and help is requested #2592
Description
When an option is marked Required and a DefaultValueFactory is set, calling Option.GetRequiredValue still throws.
Program code:
using System.CommandLine;
var rootCommand = new RootCommand("This is the description")
{
new Option<string>("--required")
{
Required = true,
DefaultValueFactory = _ => "hello"
}
};
var parseResult = rootCommand.Parse("-h");
Console.WriteLine(parseResult.GetRequiredValue<string>("--required"));
Exception:
Unhandled exception. System.InvalidOperationException: --required is required but was not provided.
at System.CommandLine.Parsing.SymbolResult.GetRequiredValue[T](String name)
at System.CommandLine.ParseResult.GetRequiredValue[T](String name)
at Program.<Main>$(String[] args) in C:\temp\command-name-issue\Program.cs:line 14