cols_units.md
In gt: Easily Create Presentation-Ready Display Tables

cols_units() errors well with wrong input

Code
  cols_units(gt(d), col2 ~ 1, everything() ~ "degree")
Condition
  Error in `cols_units()`:
  ! Incorrect unit for column `col2`.
  Caused by error:
  ! `unit` must be a single string, not the number 1.
Code
  cols_units(gt(d), everything() ~ 1, col2 ~ 2)
Condition
  Error in `cols_units()`:
  ! Incorrect unit for columns `col1` and `col2`.
  Caused by error:
  ! `unit` must be a single string, not the number 1.
Code
  cols_units(gt(d), col1 ~ c("x", "y"))
Condition
  Error in `cols_units()`:
  ! Incorrect unit for column `col1`.
  Caused by error:
  ! `unit` must be a single string, not a character vector.