helpers-pattern.md
In tidyselect: Select from a Set of Strings

matches() complains about bad stringr pattern usage

Code
  matches(stringr::fixed("a"), perl = TRUE)
Condition
  Error in `matches()`:
  ! `perl` not supported when `match` is a stringr pattern.
Code
  matches(stringr::fixed("a"), ignore.case = TRUE)
Condition
  Error in `matches()`:
  ! `ignore.case` not supported when `match` is a stringr pattern.
Code
  matches(stringr::fixed(c("a", "b")))
Condition
  Error in `matches()`:
  ! stringr patterns must be length 1.