User blog comment:DaNASCAT/Technical Update: April 3, 2012/@comment-3202289-20120403192131

I played with the Category Intersecton a bit this week and would like to deliver some more feedback!

Visuality

 * The "API query used" section falls a bit out of the result context and should be placed below the two boxes.
 * The spacings between the second category field, the result limit and the find matches button is a bit to tiny.

Functionality
 Special:CategoryIntersection?category_1=Category%3AWeapons&category_2=Category%3ALong+Range+Weapons&limit=25&wpSubmit=Find+matches 
 * A custom amount of search boxes would be awsome. Just like the result amount a dropdown for category amount.
 * Extrem hard linkage! My first ten attemps failed right through. Every intra-wiki link is re-coded and didn't lead to the special page:

turned to

 http://battlefieldheroes.wikia.com/wiki/Special:CategoryIntersection%3Fcategory_1%3DCategory:Weapons%26category_2%3DCategory:Long_Range_Weapons%26limit%3D25%26wpSubmit%3DFind_matches 

It happens because all special characters turn to HTML substitutes. ? becomes %3F = becomes %3D and & becomes %26

I only managed it by using this code, that produces the a working url. The downside - not working as redirect :(

 

Hope this isn't an overload of text, nontheless I greatly honor the feature!