I’d like to write a function `f(n::Int)::String`

such that `f(1) = "x₁"`

, `f(2) = "x₂"`

and so on (assume `1<=n<=9`

for simplicity). Since

```
julia> 'x' * '\u2081'
"x₁"
```

Let `n=3`

; the syntax `'x' * '\u' * string(n + 2080)`

is invalid: `ERROR: syntax: invalid escape sequence`

. The backslash can be escaped with “raw”, but how can i get the subscript back?

```
julia> 'x' * raw"\u" * "$(n + 2080)"
"x\\u2083"
```