jingham added a comment.

In D80165#2045882 <https://reviews.llvm.org/D80165#2045882>, @labath wrote:

> In D80165#2044509 <https://reviews.llvm.org/D80165#2044509>, @jingham wrote:
>
> > We should make sure if we do exit that we don't output any other text that 
> > would obscure the error message.  It should be easy to spot the error both 
> > so you can easily fix it and to prevent you from typing lldb commands into 
> > your shell.  If libOption had a "nearest option name to the one you typed" 
> > facility that would be useful in this case as well.
>
>
> That facility exists. Clang uses it for command-line "fix-its". I am not sure 
> what it takes to make use of it.


Jonas said this wasn't part of libOption, but was done by hand in clang.

> 
> 
>> Does anybody remember what gdb does when you mistype a command-line option?  
>> We're not at all required to model their behavior, but it would be 
>> interesting to consider.
> 
>   $ gdb -foobar
>   gdb: unrecognized option '-foobar'
>   Use `gdb --help' for a complete list of options.

You omitted the bit of text that would show whether it quit or not...


Repository:
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https://reviews.llvm.org/D80165



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