What I'm looking for would allow me to take something like this:
index.html.template:
<html>
<body>
<# include ("body.html.template") #>
</body>
</html>
body.html.template:
Hello World! <# include("text.txt") #>
text.txt:
4
And turn it into this:
<html>
<body>
Hello World! 4
</body>
</html>
While the example is HTML, I would probably end up using something like this in a lot of weird places. I think there are a number of preprocessors out there; is there a very basic one that's suited to this task?