Multiples prefix are not handled

[adelin-b]

When trying to convert a snippet

"prefix": ["Hello World", "HW"]

it just throw an error saying something like "split() of prefix is undefined"

In order I think this should be impletment:

• [x] Quickfix: put a error message
• [x] Quickfix: pick the first one with a warning
• [ ] Fix: handling all the prefix

[VincentCordobes]

Thank you for reporting :) I totally agree, I published a new version that handles your first 2 points