Fix some help and GetRequiredValue
issues
#2601
Draft
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This fixes the following issues:
The approach I took to fix #2573 makes
Argument<bool>
andOption<bool>
have an implicitDefaultValueFactory
. This change drove changes to theHelpBuilder
so I also fixed #2582 while I was in there.It's not obvious to me that this is the right fix, so I thought that the PR would help clarify the discussion.
For example, should other types than
bool
have this behavior of an implicit default value?