<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/87355>87355</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            More Specific Error Message For "gdb-remote" Alias
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    Per: https://discourse.llvm.org/t/serial-debugging-kgdb-kernel-bugs-sigtrap-and-serial-use-with-plugin-shortcut/77731/2
Create more defined error messages for various unaccepted input arguments.

In the case of my misuse of the alias, state that only `hostname` and `portnum` are valid arguments (where `portnum` is required) and anything else must use the full command (which can be viewed from `help gdb-remote`).

Oooor, ideally, still allow the expanded argument use for the alias (eg. `[<scheme>://]<...>`), instead of hardcoding the `connect://` scheme.
</pre>
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