Unfortunately, the package python-gtkspellcheck seems to be outdated,
even in Debian unstable. It has one known bug, which I surely stumbled
upon: Zim will crash, if bullet lists with URLs are used, as in:
* http://www.example.com
* http://bugs.example.com
* http://forum.example.com
* http://wiki.example.com
This used to work fine with python-gtkspell, but python-gtkspellcheck
3.0 will crash, and it causes Zim to quit without warning.
In the end, I had to install python-pip and update the package from source:
pip install --upgrade pygtkspellcheck
pip list | grep spell
pygtkspellcheck (4.0.4)
This was suggested in:
https://github.com/koehlma/pygtkspellcheck/issues/29
There are a few related bug reports for Zim:
https://bugs.launchpad.net/zim/+bug/1598138
https://bugs.launchpad.net/zim/+bug/1598830
--
Hartmut Buhrmester