> We’re also going to introduce a concatenation function called “cat”.
>
Note there is already a concatenation operator in puppet (from
lib/puppet/parser/ast/leaf.rb):
class Concat < AST::Leaf
def evaluate(scope)
@value.collect { |x| x.evaluate(scope) }.collect{ |x| x ==
:undef ? '' : x }.join
end
def to_s
"concat(#{@value.join(',')})"
end
end
We just don't expose the syntax directly; instead of
cat(template("a.erb"), template("b.erb")
you write:
"${template("a.erb")}${template("b.erb")}"
and this is internally processed as a concatenation...so what you're
suggesting is just a syntax-desugaring.
Also, having templates chain scope is, IMHO, a bug/misfeature, but that's
really a separate issue..
-- M
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scream and shout. -- 1920's parody of the
maritime general prudential rule
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