Drop 'specials' from a formula
no_specials(term, specials = c("|", "||", "s"))
a call
or language
object (or list) with specials removed
no_specials(findbars_x(~ 1 + s(x) + (f|g) + diag(x|y)))
#> [[1]]
#> f | g
#>
#> [[2]]
#> x | y
#>
no_specials(~us(f|g))
#> f | g