Support msgctxt for keyword parameter

[arm1n]

It seems that message contexts are currently not supported in the way they're specified with common xgettext format like so:

--keyword=pgettext:1c,2
--keyword=npgettext:1c,2,3

Cannot speak for other parsers, but gettext-handlebars actually has support for msgctxt. Are there any plans to support this in the near future? Thanks for any feedback!

[smhg]

Thanks for the reminder. This should definitely be supported.
It is true that the Handlebars parser covers contexts. I didn't look into others, but this won't break anything.
Would you be able to send a PR? I haven't used contexts as far as I remember so you might be better placed to add this.

[smhg]

As a reminder: parser results that contain contexts are now processed thanks to @x-cray.
Next step would be to retrieve context information from the keyword spec.

[dschissler]

I'll have to look into this for the Volt parser. It will probably be a while though.