Currently, the searching in comments breaks up, if comments contain multibyte characters and string manipulation logic in getRelevantMessagePart happens to cut through them rendering the resulting string invalid (not UTF-8 compliant). This patch replaces all string manipulating functions in this code to multibyte aware ones.
Signed-off-by: Michał Węgrzynek <michal.wegrzynek@malloc.com.pl>
9c3b5fe4bb