Missing characters in Latin -> Cyrillic transliteration

[skoval00]

Characters C, Q, W, X are missing in transliteration tables for Latin -> Cyrillic transliteration.
$ python -c 'import transliterate; print transliterate.translit("CQWX", "ru")'
CQWX

[barseghyanartur]

@skoval00, @SomeUser55:

The main question is, what to do with them?

https://en.wikipedia.org/wiki/Romanization_of_Russian#Transliteration_table

• One way of dealing with it is to make strict argument strip out all characters that are not listed in the language pack.
• Another way of dealing with it, since we want to follow the standards, would be to allow users to provide additional mappings to the translit function (which would then take precedence over chosen language pack).

Any other/better ideas?

[skoval00]

In my previous company some guys made a complex tool for multi-language transliteration of toponyms. As far as I understood they had sets of rules with different probabilities which depended on the location of characters' sequences in a word (like ck -> к, ough -> о). The process of transliteration had a few stages implemented in different programming languages, but result was quite good.
Unfortunately it was rather ugly and hardly separable from the main codebase.

[hadaev8]

Same here:
text = 'Когда Digital Equipment Corporation сократила количество рабочих мест на три тысячи, в ее официальном объявлении говорилось не об увольнениях, а о «вынужденных мерах».'

->

Когда Дигитал Еqуипмент Цорпоратион сократила количество рабочих мест на три тысячи, в ее официальном объявлении говорилось не об увольнениях, а о «вынужденных мерах».