Remove underscore from enter/exit parameters in anim_options()

And update documentation for both options

R/plot_helpers.R

 #' @param title_family Font family for the plot title
 #' @param text_size Font size of the plot text
 #' @param title_size Font size of the plot title
-#' @param ease_default Default aes easing function. See [tweenr::display_ease]
+#' @param ease_default Default aes easing function. See [tweenr::display_ease()]
 #'   for more options.
-#' @param ease_other Additional aes easing options, named with aesthetic to
-#'   which the easeing should be applied, consistent with [gganimate::ease_aes()].
-#' @param enter_exit Enter/exit fading functions applied to objects in the animation.
-#'   See [gganimate::enter_exit] for a complete list of options.
+#' @param ease_other Additional aes easing options, specified as a named list.
+#'   List entries are named with the aesthetic to which the easeing should be
+#'   applied, consistent with [gganimate::ease_aes()].
+#'   E.g. `list(color = "sine")`.
+#' @param enter Enter fading function applied to objects in the animation. See
+#'   [gganimate::enter_exit] for a complete list of options.
+#' @param exit Exit fading function applied to objects in the animation. See
+#'   [gganimate::enter_exit] for a complete list of options.
 #' @inheritParams gganimate::transition_states
 #' @export
 anim_options <- function(
   state_length = 1,
   ease_default = "sine-in-out",
   ease_other   = NULL,
-  enter_       = enter_fade(),
-  exit_        = exit_fade(),
+  enter        = enter_fade(),
+  exit         = exit_fade(),
   text_family  = "Fira Sans",
   title_family = "Fira Mono",
   text_size    = NULL,
       state_length = state_length,
       ease_default = ease_default,
       ease_other   = ease_other,
-      enter_       = enter_,
-      exit_        = exit_,
+      enter        = enter,
+      exit         = exit,
       text_family  = text_family,
       text_size    = text_size,
       title_family = title_family,

man/anim_options.Rd

 \usage{
 anim_options(transition_length = 2, state_length = 1,
   ease_default = "sine-in-out", ease_other = NULL,
-  enter_ = enter_fade(), exit_ = exit_fade(),
+  enter = enter_fade(), exit = exit_fade(),
   text_family = "Fira Sans", title_family = "Fira Mono",
   text_size = NULL, title_size = NULL, ...)
 }
 \item{state_length}{The relative length of the pause at the states. Will be
 recycled to match the number of states in the data}
 
-\item{ease_default}{Default aes easing function. See \link[tweenr:display_ease]{tweenr::display_ease}
+\item{ease_default}{Default aes easing function. See \code{\link[tweenr:display_ease]{tweenr::display_ease()}}
 for more options.}
 
-\item{ease_other}{Additional aes easing options, named with aesthetic to
-which the easeing should be applied, consistent with \code{\link[gganimate:ease_aes]{gganimate::ease_aes()}}.}
+\item{ease_other}{Additional aes easing options, specified as a named list.
+List entries are named with the aesthetic to which the easeing should be
+applied, consistent with \code{\link[gganimate:ease_aes]{gganimate::ease_aes()}}.
+E.g. \code{list(color = "sine")}.}
+
+\item{enter}{Enter fading function applied to objects in the animation. See
+\link[gganimate:enter_exit]{gganimate::enter_exit} for a complete list of options.}
+
+\item{exit}{Exit fading function applied to objects in the animation. See
+\link[gganimate:enter_exit]{gganimate::enter_exit} for a complete list of options.}
 
 \item{text_family}{Font family for the plot text}
 
 \item{text_size}{Font size of the plot text}
 
 \item{title_size}{Font size of the plot title}
-
-\item{enter_exit}{Enter/exit fading functions applied to objects in the animation.
-See \link[gganimate:enter_exit]{gganimate::enter_exit} for a complete list of options.}
 }
 \description{
 Helper function to set animation and plotting options to be passed to

man/static_plot.Rd

   \item{title_family}{Font family for the plot title}
   \item{text_size}{Font size of the plot text}
   \item{title_size}{Font size of the plot title}
-  \item{ease_default}{Default aes easing function. See \link[tweenr:display_ease]{tweenr::display_ease}
+  \item{ease_default}{Default aes easing function. See \code{\link[tweenr:display_ease]{tweenr::display_ease()}}
 for more options.}
-  \item{ease_other}{Additional aes easing options, named with aesthetic to
-which the easeing should be applied, consistent with \code{\link[gganimate:ease_aes]{gganimate::ease_aes()}}.}
+  \item{ease_other}{Additional aes easing options, specified as a named list.
+List entries are named with the aesthetic to which the easeing should be
+applied, consistent with \code{\link[gganimate:ease_aes]{gganimate::ease_aes()}}.
+E.g. \code{list(color = "sine")}.}
+  \item{enter}{Enter fading function applied to objects in the animation. See
+\link[gganimate:enter_exit]{gganimate::enter_exit} for a complete list of options.}
+  \item{exit}{Exit fading function applied to objects in the animation. See
+\link[gganimate:enter_exit]{gganimate::enter_exit} for a complete list of options.}
   \item{transition_length}{The relative length of the transition. Will be
 recycled to match the number of states in the data}
   \item{state_length}{The relative length of the pause at the states. Will be