Sphinx sometimes assumes some characters as word separators.
For instance, letters
'e' and
'ё' are kinda similar in Russian. Some print issues even replace the latter with the former. However, Sphinx assumes 'ё' a word separator. To prevent it, one should search for Unicode code points and append mapping to
charset_table index config:
charset_type = utf-8
charset_table = 0..9, A..Z->a..z, _, a..z, U+A8->U+E5, U+B8->U+E5, U+410..U+42F->U+430..U+44F, U+430..U+44F, \
U+0451->U+0435
Here
U+0451->U+0435 maps 'ё'(U+0451) to 'e'(U+0435). The
Unicode code points could be found
here.
References
