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Comment by toppy | Hacker News Reader

"CSS is now a programming language. XML is now a programming language."

Seconded. Could we please stop call CSS a language. If not, add PDF to the list.

Interestingly, PDFs actually do contain an embedded programming language in them, a subset of PostScript. [1] PostScript, meanwhile, is actually Turing complete with conditionals and loop structures inside of it. [2] I'd argue that makes PDFs a whole lot more programming language-y than CSS or XML.

[1]: http://en.wikipedia.org/wiki/PDF#Technical_foundations

[2]: http://en.wikipedia.org/wiki/PostScript#The_language

"PDFscript" (as I like to call it) is not Turing complete. It's more similar to SVG in terms of capability. From the PDF spec:

"To simplify the processing of content streams, PDF does not include common programming language features such as procedures, variable, and control constructs."

    > Could we please stop call CSS a language

If you're going to be pedantic, be pedantic right. CSS is indeed a language, even if it's arguably[1] not a programming one.

[1] http://stackoverflow.com/questions/2497146/is-css-turing-com...

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