Help Text Displays 'help' Option/Verb if AutoHelp is 'False'

[x789]

Description

If I configure the parser to not support the implicit option/verb 'help', the help text still contains the option/verb.
(This is possibly related to #414)

Expected Behavior

I expect that the option/verb is not displayed.

Environment

• .NET Core 2.2 Application
• CommandLineParser Nuget Package 2.5.0

How to Reproduce

1. Configure the parser:

   var parser = new Parser(config =>
     {
       config.AutoHelp = false;
       config.HelpWriter = Console.Out;
     });
   var parserResult = parser.ParseArguments ...
   

2. Execute your program with --help

   ERROR(S):
   Verb '--help' is not recognized.

   --help Display this help screen.

   --version Display version information.

[x789]

I investigated this issue and found a reason for this behavior. The parser-settings are not propagated to the method (HelpText.AutoBuild) that actually builds the help text.
Therefore, I think that #414 and #455 have the same origin.

I should be able to provide a patch in the next days...

[x789]

Closed (Reason)

[moh-hassan]

@x789

The AutoHelp /AutoVersion properties of Parser for disabling AutoHelp /AutoVersion generation.
The AutoHelp /AutoVersion properties of HelpText for hiding/showing --help/--version
They have the same names but have different purpose.

So to hide --help/--version option , these properties should be false in both Parser and HelpText

var parser = new CommandLine.Parser(with=>
{

					with.AutoHelp=false; //disable AutoHelp Generation
					with.AutoVersion=false; //disable AutoVersion Generation						
				}); 

                          //use HelText to generate help without --help/--version options

                           var helpText = HelpText.AutoBuild(Result, h =>
						{					
							//this is working ONLY when parser  AutoHelp /AutoVersion =false
            // it may better if renamed ShowHelp/ShowVersion
							h.AutoHelp=false; //hide --help option
							h.AutoVersion=false;		//hide --version option									
							return h;
						}, 
						e =>e);

It may be better if these properties are renamed in HelpText to be: ShowHelp/ShowVersion

How To show help/version screen

In WithNotParsed method you should catch the error of type "UnknownOptionError" and based on the Token "help" or "version" show your custom help/version screen

[moh-hassan]

This issue is resolved in v2.6.0
Show example