Question about Improving Code Generation with Promting

[icnahom]

It shows on the paper (Section E.3) that we can put prompt prefixes with the <filename> token.

My Question is, how do we handle this when the prompt we are making is a Fill-in-middle one?

Should the prompt prefix come before the <fim_prefix> token or after?

Which one is correct, A or B? :

• A. <filename> data <fim_prefix> content <fim_suffix> content <fim_middle>
• B. <fim_prefix> <filename> data + content <fim_suffix> content <fim_middle>