str_glue() escapes

• {{ to escape {

df |> mutate(greeting = str_glue("{{Hi {name}!}}"))

## # A tibble: 3 × 2
##   name  greeting   
##   <chr> <glue>     
## 1 Flora {Hi Flora!}
## 2 David {Hi David!}
## 3 <NA>  {Hi NA!}