Empty template {} returns character(0) output

[mmuurr]

Is the behavior below expected?
I ran into a unique situation recently where the template itself has an empty splice region ({}), leading to an empty vector as a result:

str(glue::glue("{}{1+1}"))
#>  'glue' chr(0)

In the above example, I think(?) most would expect something like this as output:

str(glue::glue("{1+1}"))
#>  'glue' chr "2"

... but perhaps this is intentional?

[jimhester]

Yes it is intentional, {} produces NULL, and the principle glue follows is 0 length inputs should generate 0 length outputs.

see #100, #84 for additional issues related to this.