498107 - Spell checking needs better handling for multilingual mail

Status: VERIFIED DUPLICATE of bug 69687

(Thunderbird :: General, enhancement)

Description

[Someone]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/531.0 (KHTML, like Gecko) Chrome/3.0.187.1 Safari/531.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; he; rv:1.9.1b3pre) Gecko/20090223 Thunderbird/3.0b2

I wish for the spell checker to have better handling in the case of a mail mixing languages.
Currently it only allows you to select one language to use to check with, And will result in all words from another language behind marked misspelled (squiggly red line).

This is quite annoying and requires better behavior for it.
For example in word i cant write stuff in multiple languages and it knows to check it with the correct spell checking dictionary automatically.

Reproducible: Always

Steps to Reproduce:
1. Write a message containing multiple languages.
Actual Results:  
The spell checker only allows to check one language for spelling issues and all other language words are marked as a misspell.

Expected Results:  
It should handle this scenario and know to not check at all words from another language or check them with the correct dictionary.

Comment 1

[Joshua Cranmer [:jcranmer]]

Per precedent, this appears to be bug 69687.