I've just given Zim Wiki a try, and indeed it seems to be closer to MoinMoin than other alternatives (also in terms of syntax, not only file storage). However

I've just given Zim Wiki a try, and indeed it seems to be closer to MoinMoin than other alternatives (also in terms of syntax, not only file storage). However there are a couple of rough edges like for example: * the builtin editor doesn't seem to have an option to edit the "raw" markup; it's always in WYSIWYG mode; * according to the documentation [https://zim-wiki.org/manual/Help/Wiki_Syntax.html https://zim-wiki.org/manual/Help/Wiki_Syntax.html] the wiki syntax is quite trivial (nothing bad in that), however it seems to be a strange combination between Markdown and a few other wiki syntaxes; thus migrating to and from Zim would be an issue; (I see that there is an Markdown export option, however just like in case of JPEG this is a lossy conversion, and after a few "rounds" the markup could degrade;) * the builtin web server seems to be quite rudimentary; (perhaps there are plugins out there that solve this;)