I was interested in the add-on for having a all languages option as discussed here:
The add-on pastebin looks like it was for an earlier version of PolyLang. How easy is it to make this compatible with latest version?
Even better for me would be a solution that allows posts to appear in all languages when only one language exists. I can modify loops in my theme to show default language when no translation exists etc, but when you navigate to a single post you then switch language.
Of course you can create a copy of each post in all languages, but for authors, this is a bit of a pain. Just wondered if there was an easier way.