types.md
In rlang: Functions for Base Types and Core R and 'Tidyverse' Features

is_string2() matches on `empty`

Code
  is_string2("foo", empty = 1)
Condition <rlang_error>
  Error in `is_string2()`:
  ! `empty` must be `NULL` or a logical value.
Code
  is_string2("foo", empty = NA)
Condition <rlang_error>
  Error in `is_string2()`:
  ! `empty` must be `NULL` or a logical value.
Code
  is_string2("foo", "foo", empty = TRUE)
Condition <rlang_error>
  Error in `is_string2()`:
  ! Exactly one of `string` and `empty` must be supplied.