ftintitle: Add support for other languages

[elfez]

I have a few Spanish language tracks which use "con" instead "feat". It would be nice if it could detect these and handle them appropritately. Presumbly this is going to hold true for other languages as well, so perhaps having some way of providing alternatives on the command line might be more flexible than hardcoding it in?

Really useful plugin btw, so thanks :)

[Kraymer]

This problematic arises in lyrics plugin too.
Maybe a global lang config setting, based on what whe could adapt the behaviour of relevant plugins?

[sampsyo]

¡Bueno! Should be an easy change if you're interested in contributing.

[Kraymer]

@sampsyo don't you think it would be the occasion to tackle i18n issue in a less bitesized way ?

I'm thinking having a global setting option to specify additional languages and tracking the translations in a resource file (gettext module?). So we could write code like :

   keywords = ['cover', 'lyrics']
   keywords += i18n_whatever(keywords, config['lang'])

We don't have much translations to do yet, but with this in place we could eventually translate the whole beets interface in other langages?

[sampsyo]

Indeed, internationalizing the whole interface would not be bite-sized. 😃 For this particular ticket, though, it might be nice for the marker set (feat., featuring, etc.) to be extended even when you only have a few tracks from a different language (as @elfez seems to have). So it might be nice to add con independent of a global language setting.

[Kraymer]

ok I've done it, writing unit tests for ftInTitle plugin now