Control whether to match the expression only if it appears from the beginning of the line.
rx_start_of_line(.data = NULL, enable = TRUE)
Expression to append, typically pulled from the pipe
Whether to enable this behavior, defaults to
rx_start_of_line(enable = TRUE)#>  "^"rx_start_of_line(enable = FALSE)#> NULL# create expression x <- rx() %>% rx_start_of_line() %>% rx_find("apple") grepl(x, "pineapple") # should be false#>  FALSEgrepl(x, "apple") # should be true#>  TRUE