while the current ctags parser supports level 5 sections (i.e. 6 =), see
except that as the OP said, it doesn't, or it does and Geany doesn't, but anyway level 5 doesn't show in the symbols.
Does it matter that the enum [here](https://github.com/geany/geany/blob/ae1f499e3b2fa108d749942008431ec1aaf0294b...) does not go to level 5?