broken SQL translation for is.na

[piccolbo]

dplyr::translate_sql_q(quote(!is.na(if (w > 0) w)))

returns

<SQL> "!"
<SQL> CASE WHEN "w" > 0.0 THEN "w" ENDIS NULL

The keyword ENDIS is not part of any SQL dialect I know of and it seems like a space fell through the cracks.
Comparing the defs for is.na and is.null in base_scalar seems to confirm the hypothesis

Browse[2]> base_scalar$`is.na`
function (x) 
{
    build_sql(x, "IS NULL")
}
<environment: namespace:dplyr>
Browse[2]> base_scalar$`is.null`
function (x) 
{
    build_sql(x, " IS NULL")
}
<environment: namespace:dplyr>

[hadley]

I now get:

translate_sql(!is.na(if (x) y else z))
#> <SQL> NOT((CASE WHEN ("x") THEN ("y") ELSE ("z") END) IS NULL)

I think that's more likely to parse correctly.