vibe.d selectively include attribute into tag using diet template

[Steven Schveighoffer]

On 2/28/21 12:29 AM, JG wrote:
> On Saturday, 27 February 2021 at 19:12:55 UTC, Steven Schveighoffer wrote:
>>
>> If you use an expression without quotes
>> in diet, it becomes an interpolation.
> 
> Would you mind explaining in more detail what this means? How could one 
> use this, other than with booleans?

So if you have an expression as the right side of an attribute 
assignment, it is treated as a D expression, which is then evaluated and 
turned into string form.

So e.g. your original example:

tag(attribute='#{dexpression}')

can be written as:

tag(attribute=dexpression)

-Steve