Caution: the code below might be dangerous when applied to the default category.

Instructions

1. Create the page include:redirect with the following content:

[!--
[[module Redirect destination="{$newcategory}:{$pagename}"]]
--]
----
module Redirect destination="{$newcategory}:{$pagename}"

Note the [!-- ... --] to prevent early redirection, i.e. when everything not ready… the last line will display what to be redirected and where if module was not "commented".

2. Create a bad-named-category:_template with the following content:

[[include include:redirect newcategory=nice-category | pagename=%%page_name%% ]]

Hence a bad-named-category:page1 would be redirected to nice-category:page1

With the commented module, you can preview the redirection.
When everything is OK, edit again the include:redirect page and remove the comment [!--

If you want to edit again the redirected pages, you have first to

• reedit the include:redirect with http://your-wiki.wikidot.com/include:redirect/noredirect/true
• and revert to previous version via the page history (add a comment redirect=true / false)
• edit the redirected page(s)

Resources involved

• include
• _template and variables
• module redirect

Disclaimer

We cannot accept complaints from Wikidot dummies if they cannot access their pages anymore.