Adds return value for ggsave (#4396)

Author: eliocamp

NEWS.md

@@ -47,6 +47,8 @@
 * Fix a bug that `after_stat()` and `after_scale()` cannot refer to aesthetics
   if it's specified in the plot-global mapping (@yutannihilation, #4260).
 
+* `ggsave()` now returns the saved file location invisibly (#3379, @eliocamp).
+
 # ggplot2 3.3.3
 This is a small patch release mainly intended to address changes in R and CRAN.
 It further changes the licensing model of ggplot2 to an MIT license.

R/save.r

@@ -97,7 +97,7 @@ ggsave <- function(filename, plot = last_plot(),
   }))
   grid.draw(plot)
 
-  invisible()
+  invisible(filename)
 }
 
 #' Parse a DPI input from the user