save_kable() saves .tex with ANSI encoding; expecting UTF-8

[tomasrei]

Describe the bug

save_kable() saves .tex files with ANSI encoding; expecting UTF-8

reprex:

library(tidyverse)
library(kableExtra)

test <- lm(mpg ~ cyl + wt, mtcars) %>% tidy() %>%
  kbl(format = "latex") %>% 
  footnote(number = c("Testa  å ä ö"))

save_kable(test, file = "plain.tex")

The problem is that when I convert the .tex file to pdf using pandoc, It won't work because the encoding is wrong. I will get an error like:

Invalid UTF-8 byte sequence (´┐¢´┐¢´┐¢).

If I open the .tex file in notepad and re-save it with UTF-8, it will work. However, this is tedious, as I modify my tables a lot before it is finished.

EDIT: I found one kind of hacky solution:

writeLines(test, file('test.tex', encoding = 'UTF-8'))

But there must be a better way?