On Nov 2, 2010, at 9:14 AM, Michael Gliwinski wrote:
> On Tuesday 02 Nov 2010 15:06:19 Nigel Kersten wrote:
>> On Tue, Nov 2, 2010 at 6:34 AM, jcbollinger <john.bollin...@stjude.org>
> wrote:
>>> On Nov 1, 7:07 pm, Nigel Kersten <ni...@puppetlabs.com> wrote:
>>>> It would be great if someone could update the original bug with the
>>>> position we've come to, otherwise I'll get to it in the next few days.
>>>
>>> Done.
>>>
>>>
>>> John
>>
>> Thanks. There's one thing I'm not quite clear on.
>>
>> This proposal means we have concatenation and find-first-existing
>> support for the source parameter, and concatenation for the template
>> function, but how are we proposing we provide find-first-existing
>> support for the template and file functions? Or are we dropping that
>> goal?
>
> I believe that was by either passing an array or multiple arguments, no?
> E.g.:
>
> find-first-existing:
>
> file('foo', 'bar')
> template('foo.erb', 'bar.erb')
>
> concatenation:
>
> concat(file('foo'), file('bar'))
> concat(template('foo.erb'), template('bar.erb'))
>
> that way you can even mix them ;)
>
> concat(file('header'), template("foo.$host.erb", "foo.erb"))
The proposal I was supporting (and the one in the bug tracker) retained
backward compatibility which means that passing more than one file to
template() still concatenates. That is deprecated though.
*) Would creating a function that says, 'return the first argument that doesn't
throw an exception' be useful?
*) Is it even feasible to write?
*) Also, I'm assuming that file() and template() throw an exception if the file
doesn't exist. Does anyone know if that's true?
*) Also, what would you name this function?
I'm thinking that if we do take this approach, it should be split off into
another ticket.
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