rowan.collins wrote:

(In reply to comment #0)

Under certain circumstances, the argument for a template will not be replaced.

The argument *is* being replaced, but unfortunately the parser is seeing what
humans generally wouldn't - the text contains an "=", which is used to form
"name=value" pairs. Thus, it is not creating an unnamed parameter called "1",
it's creating a named parameter, with the name as everything to the first '='.

:: So by placing
{{{array ( 'user'}}}
:: in meta:sandbox, the following
{{meta:sandbox|array ( 'user' => 1, 'sysop' => 1, 'developer' => 1 )}}
:: becomes the following

1, 'sysop' => 1, 'developer' => 1 )

It would be nice to have some special easy way of "escaping" instances of '='
and '|' within the template syntax, but this *is* expected behaviour.
For now, you can work around it by replacing all '=' with the HTML escaped
version, = (I've now done this in the paragraph linked)

Astronouth7303 wrote:

(In reply to comment #1)

It would be nice to have some special easy way of "escaping" instances of '='
and '|' within the template syntax, but this *is* expected behaviour.

<nowiki> seems work.

For now, you can work around it by replacing all '=' with the HTML escaped
version, &#61; (I've now done this in the paragraph linked)

This didn't seem to help, but it may have been my caching.

Anyway, <nowiki> makes more sense.