Diacritic insensitive text search
Currently the message search is diacritic sensitive. Fox example, if you type a phrase like "naive" or "resume", the result set on the Messages tab will contain the exact matches only, therefore the alternative forms like "naïve" or "résumé" will be missing, and vice versa.
This behaviour particularly affects non-English languages where accents are frequently used and it makes text search inaccurate.
It would be nice if all versions matched regardless of whether diacritics were typed or not.