Board Thread:Support Requests - Getting Technical/@comment-5558012-20141026165705/@comment-4018164-20141026205136

What i mean by that is, what this feature does is to determine whether or not a given title shall be blacklisted, based on patterns that are placed in MediaWiki:Titleblacklist, and this way there's no need to list every possible title that you don't want to have. In order to create these patterns, a few characters are used to represent what your pattern is, while the other characters are used as regular text. For instance, the + sign is used to mention that whatever character comes before it, should appear at least once. So, for instance, the pattern: ab+c Means tha you're looking for a sequence of abc, and the letter b can appear more than once. So it will match these titles, for example:
 * abc
 * a abbc
 * abbbbbbc ccc

But will not match:
 * ab o c
 * abb a c
 * ab k

But, if you want to look for a title that contains one of these character, you need to treat it as an ordinary character in your pattern and not as a special character. Adding the slash before the character is what makes it happen. I'll try to show the difference between an escaped to a non-escaped in the following way: I tested this in my wiki with my test account, by uploading a file named potato2.png, and the result was: The title "File:Potato2.png" has been banned from creation. It matches the following blacklist entry: