Describe the bug
Using SQL Server's "isnull" function introduces a space between function name and parentheses. This doesn't happen with other functions like "nullif".

To Reproduce
I used the main site's "try it out" section to reproduce.

Before fmt

select isnull(column, 'some string'), nullif(25, 25);

After fmt

select isnull (column, 'some string'), nullif(25, 25)
;

Expected behavior
I would expect 'isnull' to be treated the same as 'nullif' where there is no space between the function name and the parenthesis.

Actual behavior
A space is introduced.