Feature Request: Replace illegal characrers by other characters

[BonfireAtNight]

If I understand this correctly, currently the characters/strings that are defined as illegal are ignored. Especially Linux users can very strict about the kinds of characters they allow for in file names. For instance, there was a recent video on the popular DistroTube YouTube channel and this article gives sensible guidelines, too.

Feature Request: It would be great if there was an option to replace spaces (in the title) by underscores ("_") or hyphens ("-") in the file name, or even to replace all uppercase letters by lowercase letters.

[smiller171]

I would love to be able to make this 2-way as well, where I could set it so a space in the heading becomes an underscore in the filename, and an underscore in the filename becomes a space in the heading.

[franco-ruggeri]

+1

This is exactly what I'm looking for. I think many Linux users have file naming conventions (hyphens and whitespace), while it's nice to have H1 with whitespace for better visualization (other plugins can use H1 in the graph view, links, etc.). I'd love to have this feature implemented!

[benhoh]

Having a two-way substitution system would be amazing!