(In reply to Alexander Gavrilov from comment #36)
> Has the about:config → spellchecker.dictionary setting been adapted to support multiple dictionaries? In my tests setting it to something comma-separated like "ru,en-US" does nothing.
We first try to match the element or document language and then use this preference. So if we think the input is in en-US, and en-US is in the list of dictionaries in "spellchecker.dictionary", we'll only enable the en-US dictionary. If there's no match on the element or document, then all of the dictionaries in the pref are used.
(In reply to Alexander Gavrilov from comment #36) dictionary setting been adapted to support multiple dictionaries? In my tests setting it to something comma-separated like "ru,en-US" does nothing.
> Has the about:config → spellchecker.
We first try to match the element or document language and then use this preference. So if we think the input is in en-US, and en-US is in the list of dictionaries in "spellchecker. dictionary" , we'll only enable the en-US dictionary. If there's no match on the element or document, then all of the dictionaries in the pref are used.