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

[Thomas, Mark - BLS CTR]

=20
> > ... but in Perl 6, as in the
> > Template Toolkit, the '.' will be used as the method=20
> calling operator=20
> > and ' _ ' will be used for string concatenation.
>=20
> But, alas, it is true no longer.  Perl 6 will now be using ~=20
> for this (see, e.g.,=20
> http://dev.perl.org/perl6/doc/design/syn/S03.html).  Which I=20
> personally think is just bizarre, but then nobody asked me.=20

Well, because _ is a valid subroutine/variable name char, it would
require surrounding whitespace, at least in certain contexts. I believe
that's what did it in. Nothing to do with readability/typability.