Right now the command requires a plugin or theme header to work. These allow setting the slug, text domain, etc. easily.

But what if we could use this for WordPress core / WordPress.org as well?

The current makepot.php script handles various special cases:

• Different meta data for the various projects
• Multiple POT files for WordPress admin, frontend, and timezones
  Here's where the new --exclude option comes in handy
• There's no text domain, so this would be a good use case for an --ignore-domain argument (Add option to ignore the text domain #35)
• No plugin or theme header that can be parsed