I see this when typing in Russian in a YAML file in a specific place

[vi]

Traceback (most recent call last):
  File "/home/vi/src/git/qutepart/qutepart/syntaxhlighter.py", line 236, in _onContentsChange
    self._highlighBlocks(firstBlock, untilBlock, timeout)
  File "/home/vi/src/git/qutepart/qutepart/syntaxhlighter.py", line 281, in _highlighBlocks
    lineData, highlightedSegments = self._syntax.highlightBlock(block.text(), contextStack)
IndexError: string index out of range

Steps to reproduce:

1. Run Enki;
2. Create a file, named, for example qqq.yaml;
3. Type q:
4. Type ы.
5. Observe the error message