Issue: Underscore does not redirect to minus.

Minus is a valid character in the underscore format, so you will need to create a synonym if you need both forms. We do not recommend changing your space-replacement after your wiki is established for this reason.

As a feature request, it may or may not be possible to fallback if the content is missing. I will look into this. It would definitely not be possible if the valid VW4 target is Restless-Legs_Syndrome

Google reports pretty much all wiki articles with spaces in the name, as these have links to it with minus instead of underscore.
A fallback would be really useful.

In the next release, the following has been implemented. For the examples below, assume _ has been selected by the admin as the wiki's URL spacing character.

If the requested URL is as follows:
Restless-Legs-Syndrome
Restless-Legs_Syndrome

If it does not exist but Restless_Legs_Syndrome exists, the user will be redirected to Restless_Legs_Syndrome.

This change applies to full paths to wiki pages:
/wiki/Area-Name/Sub-Area_Name/Prefix-for_Pages:Restless-Legs_Syndrome

Would likewise redirect to
/wiki/Area_Name/Sub_Area_Name/Prefix_for_Pages:Restless_Legs_Syndrome
If the former does not exist but the latter does.

This is a forward redirection to the current spacing character. It does not work backwards. If the requested URL is Restless_Legs_Syndrome but the actual article is Restless-Legs-Syndrome, this would not work (unless - is the wiki's URL spacing character).

Thanks!