Capture all right-arguments unevaluated, using bquote()-.() escaping.
# S3 method for Collector
apply_left(pipe_left_arg, pipe_right_arg,
pipe_environment, left_arg_name, pipe_string, right_arg_name)left argument
substitute(pipe_right_arg) argument
environment to evaluate in
name, if not NULL name of left argument.
character, name of pipe operator.
name, if not NULL name of right argument.
result