SvelteKit cli overlapping parameter shortcut -h

[Kage0x3B]

Describe the bug
The "svelte-kit" cli commands dev, preview and start have overlapping parameter shortcuts for the host parameter and the help, both shortcuts are -h. When using the shortcut, the help is always displayed and the command exits.
(Using --host instead works)

Logs

$ npx svelte-kit dev -ho

  Description
    Deprecated — use svelte-kit preview instead

  Usage
    $ svelte-kit start [options]

  Options
    -p, --port     Port  (default 3000)
    -h, --host     Host (only use this on trusted networks)  (default localhost)
    -H, --https    Use self-signed HTTPS certificate  (default false)
    -o, --open     Open a browser tab  (default false)
    -h, --help     Displays this message

To Reproduce

• Execute the dev command npx svelte-kit dev -ho in any SvelteKit project.
• It should then only show the help message.

Expected behavior
The development server starts, binds to 0.0.0.0 because of the -h parameter and launches the browser -o

Information about your SvelteKit Installation:

Diagnostics

System:
OS: Linux 5.4 Ubuntu 18.04.5 LTS (Bionic Beaver)
CPU: (8) x64 AMD FX(tm)-8350 Eight-Core Processor
Memory: 790.58 MB / 11.68 GB
Container: Yes
Shell: 5.4.2 - /usr/bin/zsh
Binaries:
Node: 14.16.1 - ~/.nvm/versions/node/v14.16.1/bin/node
npm: 6.14.12 - ~/.nvm/versions/node/v14.16.1/bin/npm
Browsers:
Firefox: 88.0.1
npmPackages:
@sveltejs/kit: next => 1.0.0-next.107
svelte: ^3.34.0 => 3.38.2
vite: ^2.2.4 => 2.3.1

Severity
Low, --host parameter can be used instead, just a small annoyance which might confuse users.

[dberesford]

I had thought about simply removing the '-h' shortcut for '--help' as a proposed solution but when I look in to it, although the cmd line opts are set here:

kit/packages/kit/src/cli.js

Line 75 in c6fde99

.option('-p, --port', 'Port', 3000)

the -h --help is hard coded in the sade package:

https://github.com/lukeed/sade/blob/89f7377442a38fa90e51abf4f953e14af0f2f2cf/lib/utils.js#L44

[jthegedus]

This was introduced in #834

Given --host was implemented before --https my suggestion would be:

    -p, --port     Port  (default 3000)
-   -h, --host     Host (only use this on trusted networks)  (default localhost)
+   -H, --host     Host (only use this on trusted networks)  (default localhost)
-   -H, --https    Use self-signed HTTPS certificate  (default false)
+   -S, --https    Use self-signed HTTPS certificate  (default false)

    -o, --open     Open a browser tab  (default false)
    -h, --help     Displays this message

This aligns with Sade docs which has examples with -H, --host, which likely informs first-time users and thus it is likely -H is used with --host elsewhere.

Noteably, Vite doesn't have aliases for it's --host or --https options, likely because of this conflict.

[benmccann]

I'm used to -h for host. E.g. that's what the mysql and psql command-line clients do. They use -? for help. I filed lukeed/sade#47 over in the sade repo

[Rich-Harris]

I think -h for --help is pretty universal (see node -h, npm -h, etc). I like -H, --host and -S, https

[Rich-Harris]

Then again, it's a tricky breaking change (if someone was already using -H for --https, we'd have no way of knowing that they meant -S and not --host.) Am wondering if we shouldn't just remove those shortcuts and make it less ambiguous