Perl is a messy, maddening programming language, the “duct tape of the internet.” But at least you can tell it was made by humans.

An experiment by computer science researchers shows that Perl, a major commercial programming language, is no more intuitive to use than a fake language with a completely random syntax. What gives?

For example, you cannot use the IndexOnly directive with the "prog" document source. This is by design to limit the overhead when using an external program for providing documents to swish; after all, ...