Well, it's true that Haml calls itself a "templating system", and Pug uses the term "template engine". That's 3 out of 3, you win. ;) PHP is a scripting langua

Well, it's true that Haml calls itself a "templating system", and Pug uses the term "template engine". That's 3 out of 3, you win. ;) PHP is a scripting language that is also a template processor, but I wouldn't call it a template language. So we disagree on several points, but no big deal. A big disadvantage of PHP, in relation to your original point about "fancy string interpolation", is that it does not natively understand the target output HTML syntactically and structurally.