Prerequisites

• I have written a descriptive issue title
• I have searched issues to ensure it has not already been reported

Cake runner

Cake Frosting

Cake version

3.0.0

Operating system

Windows

Operating system architecture

64-Bit

CI Server

No response

What are you seeing?

When I am running a task, and I have an IFrostingContext, I have 4 options to get an argument:

1. ArgumentAliases.Argument(IFrostingContext, string)

• Requires the argument and displays an error if there is none displayed

2. IFrostingContext.ICakeContext.GetArguments()

• Returns a dictionary of collections for all the arguments, which puts the onus on the user to get the argument

3. IFrostingContext.ICakeContext.GetArguments(string)

• Returns a collection of arguments for the provided string, which once again puts the onus on the user to get the Argument

4. ICakeContextExtensions.GetArgument(ICakeContext, string)

• Returns the "Last" instance of an argument provided to the CLI

Since 2 and 3 require the user to do extra work, we'll disregard those, unless they're helpful or informational. So to compare 1 vs 4:

1. Returns and requires an argument to be present. Returns the FIRST instance of the argument.
2. Returns and does not require an argument to be present. Returns the LAST instance of the argument

We need consistency, because there is an actual use-case for both. Sometimes I want to use ArgumentAliases.Argument so that I don't have to write in my own Error Message, and mess with the AnsiConsole in the same way that that function messes with it.

What is expected?

I would expect that when using:

ArgumentAliases.Argument(IFrostingContext, string)

and

ICakeContextExtensions.GetArgument(ICakeContext, string)

I would get the same result.

Steps to Reproduce

Create a task in which you pass in an argument. Then, try to retrieve the argument using the two methods described:
.\build.ps1 --required_single=0 --required_single=1

var foo = context.Argument("required_single");
var bar = context.Arguments.GetArgument("required_single");

See that foo is 0, and bar is 1.

Output log

No response