Running examples apparently uses print() instead of show()

[rvlenth]

My package has different print() and show() methods. When I enter an expression on the console, the results are displayed using show(), not print(). A case in point is running example code for package functions. I think we would want to see what's displayed on the console; however, evidently pkgdown renders example results using print() rather than show().

I noticed this snippet for the man page for emmeans::ref_grid() on my pkgdown site:

fiber.lm <- lm(strength ~ machine*diameter, data = fiber)
ref_grid(fiber.lm)
#>  machine diameter prediction    SE df
#>  A           24.1       40.2 0.777  9
#>  B           24.1       41.6 0.858  9
#>  C           24.1       38.5 0.966  9
#> 

The above results are what is shown using print(). However, if I enter the code on the console, I see:

> fiber.lm <- lm(strength ~ machine*diameter, data = fiber)
> ref_grid(fiber.lm)
'emmGrid' object with variables:
    machine = A, B, C
    diameter = 24.133

... which are the results of show().

I also note that the reprex package *does use show(). Here are results using reprex::reprex():

library(emmeans)
## Welcome to emmeans.
## Caution: You lose important information if you filter this package's results.
## See '? untidy'
fiber.lm <- lm(strength ~ machine*diameter, data = fiber)
ref_grid(fiber.lm)
## 'emmGrid' object with variables:
##     machine = A, B, C
##     diameter = 24.133

ref_grid(fiber.lm) |> show()
## 'emmGrid' object with variables:
##     machine = A, B, C
##     diameter = 24.133

ref_grid(fiber.lm) |> print()
##  machine diameter prediction    SE df
##  A           24.1       40.2 0.777  9
##  B           24.1       41.6 0.858  9
##  C           24.1       38.5 0.966  9

^{Created on 2025-01-30 with reprex v2.1.1}
What we see here is the default, plus explicit pipes to show() and print().

I believe that pkgdown should use show() when it renders example output.

Note

I reference my site above, but probably by the time you review this issue, it will be rendered differently, as I changed the print method to show so as to get what I want to see on the site. However, I still think this is a bug in pkgdown and will revert to my old code when you fix it.