Hello Michal,
> > it doesn't create any "topic.ind" file even though all index entries are > > for the "Topic" index. Instead, it builds a "place.ind" file for which the > > entries are simply wrong. > > I forgot to mention that you need to disable the indexing4ht package, > as it overwrites the index handling. You probably don't need to use > the myconfig.cfg at all. Unless you have other configurations here. So... compiling with the following? tex4ebook -lm index -e mybuild.mk4 Test.tex https://drive.google.com/drive/folders/131oXr_4-VTni1VKwkjUXuiu9AdORvu7E?usp=sharing Unfortunately, the result seems to be the same. Unless I need to disable indexing4ht somewhere else, other than by not using myconfig.cfg. Best regards, - Jürgen