Odd Language #192: Is Double

I was going to ask this question in two technical groups: “My first question is is this is safe from a SQL injection attack?”

The issue: Doubled words are generally considered wrong, but this sentence is correct. The first “is” is the main verb. The second “is” is the first word of the question.

I ended up changing the question to “My first question is whether this is safe from a SQL injection attack.”