fixed highlighting inside string interpolations

[florianpircher]

This line fixes the “highlighting inside string interpolations”-issues. The following code will be highlighted correctly using prism.

let age = 42
let str = "\(age) years old"

[LeaVerou]

Could you include an example of what you mean by “correctly”? Thanks for working on this!

[florianpircher]

In the second <pre>-tag the Swift code gets wrapped by the string. This pull request fixes this incorrect behavior (first <pre>-tag).

[LeaVerou]

So you fix this by terminating the string where the parentheses start/end? That doesn’t seem correct.
It would be better to add a token inside the string (see the API docs about this) with the name variable.
This way people will also be able to use selectors like .string .variable to highlight interpolated variables differently. :)