Function help renders differently when using `devtools::load_all` than when installing package

[david-cortes]

From https://github.com/rstudio/rstudio/issues/11360

Steps to reproduce:

• Download some random package from CRAN.
• Create a new package project in RStudio from the downloaded package and switch to it.
• Load the package through devtools::load_all().
• Check some function documentation by executing ?<function name> in the console.
• Take a look at the function signatures and code examples for that function in the help pane.

Expected behavior: should look the same as if the help page were loaded for a package installed through install.packages or R CMD INSTALL.

Actual behavior: function signatures and code examples are rendered differently when loaded through devtools.

Setup: devtools 2.4.3, R 4.2.0.

[hadley]

You don't provide a concrete example, but in general, we expect some differences because devtools/pkgload shows you the development version of the docs, and we can't perfectly recreate what R does.

[david-cortes]

Here's an example, the issue is always the same for all packages:

• Package help:
• Devtools help: