Check that all dots are unnamed

Named arguments in ... are often a sign of misspelled argument names.

Arguments

env

Environment in which to look for ....

action

The action to take when the dots have not been used. One of rlang::abort(), rlang::warn(), rlang::inform() or rlang::signal().

Examples

f <- function(..., foofy = 8) {
  check_dots_unnamed()
  c(...)
}

f(1, 2, 3, foofy = 4)
#> [1] 1 2 3
try(f(1, 2, 3, foof = 4))
#> Error in f(1, 2, 3, foof = 4) : 
#>   Arguments in `...` must be passed by position, not name.
#> ✖ Problematic argument:
#> • foof = 4