[Templates] Converting from old template language which allows nested tags into TT template

[Robin Smidsrød]

Josh Rosenbaum wrote:
>
> String concat doesn't work inside parenths, though. ie: abc('test' _ 
> 'abc'). So the way you suggested is the only way to really do it in 
> that case.
I should probably not ask, but why doesn't a string concat work inside 
parenths? Probably a good reason within the framework for that, BUT for 
me, it looks like an obvious place to want it. Is there a political (as 
in: TT is a display language, not a programming language) or a technical 
reason for it?

-- Robin