Allow short commands without long options

[michidk]

The following code:

    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer std.debug.assert(gpa.deinit() == .ok);

    var alloc = gpa.allocator();

    const params = comptime clap.parseParamsComptime(
        \\-h                Display this help.
        \\<str>                     The host to connect to.
        \\
	);

    var diag = clap.Diagnostic{};
    var res = clap.parse(clap.Help, &params, clap.parsers.default, .{
        .diagnostic = &diag,
        .allocator = alloc,
    }) catch |err| {
        diag.report(io.getStdErr().writer(), err) catch {};
        return err;
    };
    defer res.deinit();

Errors out while building:

vscode ➜ /workspaces/my-project (main) $ zig build run -- -h
zig build-exe my-project Debug native: error: the following command terminated unexpectedly:
/usr/local/lib/zig/zig build-exe /workspaces/my-project/src/main.zig --cache-dir /workspaces/my-project/zig-cache --global-cache-dir /home/vscode/.cache/zig --name my-project --mod clap::/home/vscode/.cache/zig/p/1220f48518ce22882e102255ed3bcdb7aeeb4891f50b2cdd3bd74b5b2e24d3149ba2/clap.zig --deps clap --listen=- 
Build Summary: 0/5 steps succeeded; 1 failed (disable with --summary none)
run transitive failure
└─ run my-project transitive failure
   ├─ zig build-exe my-project Debug native failure
   └─ install transitive failure
      └─ install my-project transitive failure
         └─ zig build-exe my-project Debug native (reused)
error: the following build command failed with exit code 1:
/workspaces/my-project/zig-cache/o/0eb5808b79de382229c649195106f6bc/build /usr/local/lib/zig/zig /workspaces/my-project /workspaces/my-project/zig-cache /home/vscode/.cache/zig run -- -h

It works fine once I change the params to:

    const params = comptime clap.parseParamsComptime(
        \\-h,--help                Display this help.
        \\<str>                     The host to connect to.
        \\
    );

[Hejsil]

Hmm. I don't see a compiler error. I suspect a compiler crash. Is this the same as #84 ?