Consider changing dplyr suggestion in pivot_wider to use .by

[boshek]

Given the introduction of the .by syntax, I wonder if it would be worth while changing this nice little helper message to use that making it a little smaller:

So that would change this:

tidyr/R/pivot-wide.R

Lines 439 to 449 in 0764e65

	cli::cli_warn(c(
	"Values from {duplicate_names} are not uniquely identified; output will contain list-cols.",
	"*" = "Use `values_fn = list` to suppress this warning.",
	"*" = "Use `values_fn = {{summary_fun}}` to summarise duplicates.",
	"*" = "Use the following dplyr code to identify duplicates.",
	" " = " {{data}} %>%",
	" " = " dplyr::group_by({group_cols}) %>%",
	" " = " dplyr::summarise(n = dplyr::n(), .groups = \"drop\") %>%",
	" " = " dplyr::filter(n > 1L)"
	))
	}

to this:

   cli::cli_warn(c( 
     "Values from {duplicate_names} are not uniquely identified; output will contain list-cols.", 
     "*" = "Use `values_fn = list` to suppress this warning.", 
     "*" = "Use `values_fn = {{summary_fun}}` to summarise duplicates.", 
     "*" = "Use the following dplyr code to identify duplicates.", 
     " " = "  {{data}} %>%", 
     " " = "    dplyr::summarise(n = dplyr::n(), .by = c({group_cols})) %>%", 
     " " = "    dplyr::filter(n > 1L)" 
   )) 
 } 

[hadley]

For sure!