Equivalent of expr_text() and expr_label() for
formulas.
Usage
f_text(x, width = 60L, nlines = Inf)
f_label(x)
Arguments
x
A formula.
width
Width of each line
nlines
Maximum number of lines to extract.
Examples
f <- ~ a + b + bc
f_text(f)
f_label(f)
# Names a quoted with ``
f_label(~ x)
# Strings are encoded
f_label(~ "a\nb")
# Long expressions are collapsed
f_label(~ foo({
1 + 2
print(x)
}))