<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/130997>130997</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Support `help <OptionValueType>` in LLDB
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            lldb
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          JDevlieghere
      </td>
    </tr>
</table>

<pre>
    LLDB's help should cover the different OptionValue types. The `help` command already [supports](https://github.com/llvm/llvm-project/commit/bcae3cdbd029210e9ecf42f07d38cc4ed4a95230) argument values. We should do the same for option values. 

This would be particularly useful for more complicated things like `format-string`. Let's say I have a setting that takes a format string:

```
(lldb) set show thread-format
thread-format (format-string) = "..."
```

Now I'm curious what a format string is, so the obvious thing to do is to use help:

```
(lldb) help format-string
error: 'format-string' is not a known command.
```

Even though they're [documented on the website](https://lldb.llvm.org/use/formatting.html#variables), it would be nice to have access to (as subset) through lldb itself. 

</pre>
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